College of Agriculture,Food and Environment Sciences, Department of Sustainable Agriculture
増田豊 マスダ ユタカ
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Website：Last Update :2025/06/09Researcher Profile and Settings
Name
MASUDA Yutaka
Affiliation (Master)
College of Agriculture,Food and Environment Sciences, Department of Sustainable Agriculture
Affiliation & Job
Rakuno Gakuen University College of Agriculture, Food and Environment Sciences, Department of Sustainable Agriculture Associate Professor
Education
2005 04 - 2008 03 , Iwate University, The United Graduate School of Agricultural Sciences, Science of Bioproduction 2003 04 - 2005 03 , Obihiro University of Agriculture and Veterinary Medicine, Grduate School of Agriculture and Veterinary Medicine, Animal Production and Agricultural Economics 1996 04 - 2000 03 , Obihiro University of Agriculture and Veterinary Medicine, Faculty of Animal Husbandry, Animal Production and Agricultural Economics
Degree
Ph.D. in Bioproduction Science (Animal Production), Iwate University
Association Memberships
Hokkaido Society of Livestock and Grassland Science American Society of Animal Science American Dairy Science Association JAPANESE SOCIETY OF ANIMAL SCIENCE
Committee Memberships
2021 06 - Today, Livestock Improvement Association of Japan (LIAJ), Committee for the Dairy Cattle Improvement System (genetic evaluation methods) 2021 - 2026 , The Permanent Committee of WCGALP, The representative of Japan 2021 04 - 2023 03 , Holstein Cattle Association of Japan, Member of the Promotion Committee for the Research Project for Genetic Improvement of Longevity in Dairy Cattle 2021 - 2023 , Frontiers in Genetics, Review Editor 2021 - 2023 , Hokkaido Society of Livestock and Grassland Science, Section editor
Research Activities
Research Areas
Life sciences, Genetics, quantitative genetics Life sciences, Animal production science, animal breeding and genetics
Research Interests
statistics, dairy cattle, programming, numerical computing, data science, quantitative genetics, genomic selection, animal breeding,
Published Papers
Investigation of the effect of heat stress on egg production traits in Thai native chickens (Lueng Hang Kao Kabin) as determined by the temperature-humidity index., Krittaphak Buranawit; Nalinee Imboonta; Siriporn Tongsiri; Yutaka Masuda; Praopilas Phakdeedindan, Poultry science, 104, (7) 105196 - 105196, 2025 04 19 北海道のホルスタイン雌牛における乳中脂肪酸組成の泌乳曲線, 山本 直樹; 山崎 武志; 西浦 明子; 萩谷 功一; 阿部 隼人; 中堀 祐香; 増田 豊, 日本畜産学会報, 95, (3) 193 - 200, 2024 08 Genetic relationship of energy balance predicted from milk traits with fertility in Japanese Holsteins, Akiko Nishiura; Osamu Sasaki; Takeshi Yamazaki; Shigeki Yamaguchi; Koichi Hagiya; Satoshi Nakagawa; Hayato Abe; Yuka Nakahori; Yuriko Saito; Ryoki Tatebayashi; Yutaka Masuda, Animal Science Journal, Wiley, 95, (1) , 2024 07 Risk of using genomically-tested young Holstein sires in Japanese dairy herds, Yutaka MASUDA, Nihon Chikusan Gakkaiho, Japanese Society of Animal Science, 95, (1) 31 - 37, 2024 02 25 Effects of heat stress on predicted energy balance, fat-to-protein ratio, and milk β-hydroxybutyrate in first-lactation Holstein cattle in Hokkaido, Japan., Satoka Ishida; Akiko Nishiura; Takeshi Yamazaki; Hayato Abe; Satoshi Nakagawa; Yuka Nakahori; Shigeki Yamaguchi; Yutaka Masuda; Yuriko Saito; Ryoki Tatebayashi; Takefumi Osawa; Che-Hsuan Huang; Koichi Hagiya, Animal science journal = Nihon chikusan Gakkaiho, 95, (1) , 2024 Genetic correlations between milk fatty acids grouped according to origin until 95 days in milk and fertility of Holstein cows in Japan., Takeshi Yamazaki; Akiko Nishiura; Yuzu Chiba; Satoshi Nakagawa; Hayato Abe; Yuka Nakahori; Koichi Hagiya; Takefumi Osawa; Yutaka Masuda, Animal science journal = Nihon chikusan Gakkaiho, 95, (1) , 2024 Longitudinal genome-wide association analysis using a single-step random regression model for height in Japanese Holstein cattle, Toshimi Baba; Gota Morota; Junpei Kawakami; Yusaku Gotoh; Taro Oka; Yutaka Masuda; Luiz F. Brito; Rebbeca R. Cockrum; Takayoshi Kawahara, JDS Communications, American Dairy Science Association, 4, (5) 363 - 368, 2023 09 Application of single-step single nucleotide polymorphism best linear unbiased predictor model with unknown-parent groups for type traits in Japanese Holsteins., Takefumi Osawa; Yutaka Masuda; Junichi Saburi; Keita Hirumachi, Journal of dairy science, 106, (7) 4847 - 4859, 2023 07 Nonparallel genome changes within subpopulations over time contributed to genetic diversity within the US Holstein population., Y Steyn; T Lawlor; Y Masuda; S Tsuruta; A Legarra; D Lourenco; I Misztal, Journal of dairy science, 106, (4) 2551 - 2572, 2023 04 Genome-wide search reveals the uniqueness of DNA regions associated with coat color and innate immunity in Hokkaido Native Horse., Tomoko Amano; Haruhi Yokawa; Yutaka Masuda; Teruaki Tozaki; Masahito Kawai; Kouichi Shirai, Animal science journal = Nihon chikusan Gakkaiho, 94, (1) , 2023 Identifying influential sires and distinct clusters of selection candidates based on genomic relationships to reduce inbreeding in the US Holstein, Y. Steyn; Y. Masuda; S. Tsuruta; D.A.L. Lourenco; I. Misztal; T. Lawlor, Journal of Dairy Science, American Dairy Science Association, 105, (12) 9810 - 9821, 2022 12 An iterative method for de-regressed proof in single-step genomic BLUP and its application to a dairy cattle population, Y Masuda; Z Liu; P Sullivan, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 2022 07 Is single-step genomic REML with the algorithm for proven and young more computationally efficient when less generations of data are present?, Vinícius Silva Junqueira; Daniela Lourenco; Yutaka Masuda; Fernando Flores Cardoso; Paulo Sávio Lopes; Fabyano Fonseca E Silva; Ignacy Misztal, Journal of animal science, 100, (5) , 2022 03 15 Invited review: Unknown-parent groups and metafounders in single-step genomic BLUP, Yutaka Masuda; Paul M. VanRaden; Shogo Tsuruta; Daniela A.L. Lourenco; Ignacy Misztal, Journal of Dairy Science, American Dairy Science Association, 105, (2) 923 - 939, 2022 02 Genomic prediction of milk-production traits and somatic cell score using single-step genomic best linear unbiased predictor with random regression test-day model in Thai dairy cattle, S. Buaban; S. Prempree; P. Sumreddee; M. Duangjinda; Y. Masuda, Journal of Dairy Science, American Dairy Science Association, 104, (12) 12713 - 12723, 2021 09 Investigating the persistence of accuracy of genomic predictions over time in broilers., Jorge Hidalgo; Daniela Lourenco; Shogo Tsuruta; Yutaka Masuda; Vivian Breen; Rachel Hawken; Matias Bermann; Ignacy Misztal, Journal of animal science, 99, (9) , 2021 08 11 Reducing computational cost of large-scale genomic evaluation by using indirect genomic prediction, S. Tsuruta; D.A.L. Lourenco; Y. Masuda; T.J. Lawlor; I. Misztal, JDS Communications, American Dairy Science Association, 2021, (2) 923 - 939, 2021 08 Genomic predictions for yield traits in US Holsteins with unknown parent groups, A. Cesarani; Y. Masuda; S. Tsuruta; E.L. Nicolazzi; P.M. VanRaden; D. Lourenco; I. Misztal, Journal of Dairy Science, American Dairy Science Association, 104, (5) 5843 - 5853, 2021 05 Changes in genomic predictions when new information is added, Jorge Hidalgo; Daniela Lourenco; Shogo Tsuruta; Yutaka Masuda; Stephen Miller; Matias Bermann; Andre L S Garcia; Ignacy Misztal, Journal of Animal Science, Oxford University Press (OUP), 99, (2) , 2021 02 01 Comparison of models for missing pedigree in single-step genomic prediction, Yutaka Masuda; Shogo Tsuruta; Matias Bermann; Heather L Bradford; Ignacy Misztal, Journal of Animal Science, Oxford University Press (OUP), 99, (2) , 2021 02 01 Metafounders May Reduce Bias in Composite Cattle Genomic Predictions., Sabrina Kluska; Yutaka Masuda; José Bento Sterman Ferraz; Shogo Tsuruta; Joanir Pereira Eler; Fernando Baldi; Daniela Lourenco, Frontiers in genetics, 12, 678587 - 678587, 2021 Validation of single‐step GBLUP genomic predictions from threshold models using the linear regression method: An application in chicken mortality, Matias Bermann; Andres Legarra; Mary Kate Hollifield; Yutaka Masuda; Daniela Lourenco; Ignacy Misztal, Journal of Animal Breeding and Genetics, Wiley, 138, (1) 4 - 13, 2021 01 Genomic information in animal breeding: its use and prospects, Yutaka Masuda, Nihon Chikusan Gakkaiho, Japanese Society of Animal Science, 91, (3) 307 - 311, 2020 08 25 Bias and accuracy of dairy sheep evaluations using BLUP and SSGBLUP with metafounders and unknown parent groups., Fernando L Macedo; Ole F Christensen; Jean-Michel Astruc; Ignacio Aguilar; Yutaka Masuda; Andrés Legarra, Genetics, selection, evolution : GSE, 52, (1) 47 - 47, 2020 08 12 Beef trait genetic parameters based on old and recent data and its implications for genomic predictions in Italian Simmental cattle., Alberto Cesarani; Jorge Hidalgo; Andre Garcia; Lorenzo Degano; Daniele Vicario; Yutaka Masuda; Ignacy Misztal; Daniela Lourenco, Journal of animal science, 98, (8) , 2020 08 01 Single-Step Genomic Evaluations from Theory to Practice: Using SNP Chips and Sequence Data in BLUPF90, Daniela Lourenco; Andres Legarra; Shogo Tsuruta; Yutaka Masuda; Ignacio Aguilar; Ignacy Misztal, Genes, MDPI AG, 11, (7) 790 - 790, 2020 07 14 Variance components using genomic information for 2 functional traits in Italian Simmental cattle: Calving interval and lactation persistency., Alberto Cesarani; Giustino Gaspa; Yutaka Masuda; Lorenzo Degano; Daniele Vicario; Daniela A L Lourenco; Nicolò P P Macciotta, Journal of dairy science, 103, (6) 5227 - 5233, 2020 06 Indirect predictions with a large number of genotyped animals using the algorithm for proven and young., Andre L S Garcia; Yutaka Masuda; Shogo Tsuruta; Stephen Miller; Ignacy Misztal; Daniela Lourenco, Journal of animal science, 98, (6) , 2020 06 Changes in genetic parameters for fitness and growth traits in pigs under genomic selection., Jorge Hidalgo; Shogo Tsuruta; Daniela Lourenco; Yutaka Masuda; Yijian Huang; Kent A Gray; Ignacy Misztal, Journal of animal science, 98, (2) , 2020 02 Accuracy of genomic BLUP when considering a genomic relationship matrix based on the number of the largest eigenvalues: a simulation study., Pocrnic I; Lourenco DAL; Masuda Y; Misztal I, Genetics, selection, evolution : GSE, 51, (1) , 2019 12 Controlling bias in genomic breeding values for young genotyped bulls., Tsuruta S; Lourenco DAL; Masuda Y; Misztal I; Lawlor TJ, Journal of dairy science, 102, (11) 9956 - 9970, 2019 11 Single-step genome-wide association for longitudinal traits of Canadian Ayrshire, Holstein, and Jersey dairy cattle., Oliveira HR; Lourenco DAL; Masuda Y; Misztal I; Tsuruta S; Jamrozik J; Brito LF; Silva FF; Cant JP; Schenkel FS, Journal of dairy science, 102, (11) 9995 - 10011, 2019 11 Genetic parameters for mastitis incidence and its indicators based on somatic cell score for Holsteins in Hokkaido, Japan, Yamaguchi S; Masuda Y; Nakagawa S; Abe H; Gotoh Y; Baba T; Kawahara T, Animal Science Journal, 90, (8) 915 - 923, 2019 08 Frequentist p-values for large-scale-single step genome-wide association, with an application to birth weight in American Angus cattle., Aguilar I; Legarra A; Cardoso F; Masuda Y; Lourenco D; Misztal I, Genetics, selection, evolution : GSE, 51, (1) , 2019 06 A genome-wide single nucleotide polymorphism and copy number variation analysis for number of piglets born alive., Stafuzza NB; Silva RMO; Fragomeni BO; Masuda Y; Huang Y; Gray K; Lourenco DAL, BMC genomics, 20, (1) , 2019 04 Application of single-step genomic evaluation using multiple-trait random regression test-day models in dairy cattle., Oliveira HR; Lourenco DAL; Masuda Y; Misztal I; Tsuruta S; Jamrozik J; Brito LF; Silva FF; Schenkel FS, Journal of dairy science, 102, (3) 2365 - 2377, 2019 03 Modeling missing pedigree in single-step genomic BLUP., Bradford HL; Masuda Y; VanRaden PM; Legarra A; Misztal I, Journal of dairy science, 102, (3) 2336 - 2346, 2019 03 International bull evaluations by genomic BLUP with a prediction population., Fragomeni B; Masuda Y; Bradford HL; Lourenco DAL; Misztal I, Journal of dairy science, 102, (3) 2330 - 2335, 2019 03 Modeling pedigree accuracy and uncertain parentage in single-step genomic evaluations of simulated and US Holstein datasets., Bradford HL; Masuda Y; Cole JB; Misztal I; VanRaden PM, Journal of dairy science, 102, (3) 2308 - 2318, 2019 03 Assessing genetic architecture and signatures of selection of dual purpose Gir cattle populations using genomic information, Amanda Marchi Maiorano; Daniela Lino Lourenco; Shogo Tsuruta; Alejandra Maria Toro Ospina; Nedenia Bonvino Stafuzza; Yutaka Masuda; Anibal Eugenio Vercesi Filho; Joslaine Noely dos Santos Goncalves Cyrillo; Rogério Abdallah Curi; Josineudson Augusto II de Vasconcelos Silva, PLOS ONE, Public Library of Science (PLoS), 13, (8) e0200694 - e0200694, 2018 08 02 Differing genetic trend estimates from traditional and genomic evaluations of genotyped animals as evidence of preselection bias in US Holsteins, Masuda, Y; VanRaden, P. M; Misztal, I; Lawlor, T. J, Journal of Dairy Science, 101, (6) 5194 - 5206, 2018 06 Carrier frequency of recessive disorders affected on embryonic loss and calf mortality in Japanese Holsteins, Toshimi BABA; Yusaku GOTOH; Satoshi YAMAGUCHI; Satoshi NAKAGAWA; Hayato ABE; Yutaka MASUDA; Takasyohi KAWAHARA, Nihon Chikusan Gakkaiho, 89, (2) 163 - 169, 2018 05 Pre-selection bias and validation method in single-step GBLUP for production traits in US Holstein, Masuda, Y; VanRaden, P. M; Misztal, I; Lawlor, T. J, 11th World Congress on Genetics Applied to Livestock Production (WCGALP), 11.540, 2018 02 Application of single-step genomic best linear unbiased prediction with a multiple-lactation random regression test-day model for Japanese Holsteins, Toshimi Baba; Yusaku Gotoh; Satoshi Yamaguchi; Satoshi Nakagawa; Hayato Abe; Yutaka Masuda; Takayoshi Kawahara, ANIMAL SCIENCE JOURNAL, 88, (8) 1226 - 1231, 2017 08 Incorporation of causative quantitative trait nucleotides in single-step GBLUP, Breno O. Fragomeni; Daniela A. L. Lourenco; Yukata Masuda; Andres Legarra; Ignacy Misztal, GENETICS SELECTION EVOLUTION, 49, (1) , 2017 07 Accuracy of breeding values in small genotyped populations using different sources of external information-A simulation study, S. Andonov; D. A. L. Lourenco; B. O. Fragomeni; Y. Masuda; I. Pocrnic; S. Tsuruta; I. Misztal, JOURNAL OF DAIRY SCIENCE, 100, (1) 395 - 401, 2017 01 Technical note: Avoiding the direct inversion of the numerator relationship matrix for genotyped animals in single-step genomic best linear unbiased prediction solved with the preconditioned conjugate gradient, Y. Masuda; I. Misztal; A. Legarra; S. Tsuruta; D. A. L. Lourenco; B. O. Fragomeni; I. Aguilar, JOURNAL OF ANIMAL SCIENCE, 95, (1) 49 - 52, 2017 01 Effects of heat stress on production, somatic cell score and conception rate in Holsteins, Koichi Hagiya; Kiyoshi Hayasaka; Takeshi Yamazaki; Tatsuo Shirai; Takefumi Osawa; Yoshinori Terawaki; Yoshitaka Nagamine; Yutaka Masuda; Mitsuyoshi Suzuki, ANIMAL SCIENCE JOURNAL, 88, (1) 3 - 10, 2017 01 Dimensionality of genomic information and performance of the Algorithm for Proven and Young for different livestock species, Ivan Pocrnic; Daniela A. L. Lourenco; Yutaka Masuda; Ignacy Misztal, GENETICS SELECTION EVOLUTION, 48, (1) , 2016 10 Sexual dimorphism in livestock species selected for economically important traits, E. M. M. van der Heide; D. A. L. Lourenco; C. Y. Chen; W. O. Herring; R. L. Sapp; D. W. Moser; S. Tsuruta; Y. Masuda; B. J. Ducro; I. Misztal, JOURNAL OF ANIMAL SCIENCE, 94, (9) 3684 - 3692, 2016 09 Genetic analysis of the rates of conception using a longitudinal threshold model with random regression in dairy crossbreeding within a tropical environment, Sayan Buaban; Keigo Kuchida; Mitsuyoshi Suzuki; Yutaka Masuda; Wuttigrai Boonkum; Monchai Duangjinda, ANIMAL SCIENCE JOURNAL, 87, (8) 961 - 971, 2016 08 Genetic relationships of fertility traits with test-day milk yield and fat-to-protein ratio in tropical smallholder dairy farms, Sayan Buaban; Monchai Duangjinda; Mitsuyoshi Suzuki; Yutaka Masuda; Jureeratn Sanpote; Keigo Kuchida, ANIMAL SCIENCE JOURNAL, 87, (5) 627 - 637, 2016 05 The Dimensionality of Genomic Information and Its Effect on Genomic Prediction, Ivan Pocrnic; Daniela A. L. Lourenco; Yutaka Masuda; Andres Legarra; Ignacy Misztal, GENETICS, 203, (1) 573 - 581, 2016 05 Implementation of genomic recursions in single-step genomic best linear unbiased predictor for US Holsteins with a large number of genotyped animals, Y. Masuda; I. Misztal; S. Tsuruta; A. Legarra; I. Aguilar; D. A. L. Lourenco; B. O. Fragomeni; T. J. Lawlor, JOURNAL OF DAIRY SCIENCE, 99, (3) 1968 - 1974, 2016 03 Technical note: Acceleration of sparse operations for average-information REML analyses with supernodal methods and sparse-storage refinements, Y. Masuda; I. Aguilar; S. Tsuruta; I. Misztal, JOURNAL OF ANIMAL SCIENCE, 93, (10) 4670 - 4674, 2015 10 Use of genomic recursions and algorithm for proven and young animals for single-step genomic BLUP analyses - a simulation study, B. O. Fragomeni; D. A. L. Lourenco; S. Tsuruta; Y. Masuda; I. Aguilar; I. Misztal, JOURNAL OF ANIMAL BREEDING AND GENETICS, 132, (5) 340 - 345, 2015 10 Short communication: Genetic analysis for fertility traits of heifers and cows from smallholder dairy farms in a tropical environment, S. Buaban; M. Duangjinda; M. Suzuki; Y. Masuda; J. Sanpote; K. Kuchida, JOURNAL OF DAIRY SCIENCE, 98, (7) 4990 - 4998, 2015 07 Hot topic: Use of genomic recursions in single-step genomic best linear unbiased predictor (BLUP) with a large number of genotypes, B. O. Fragomeni; D. A. L. Lourenco; S. Tsuruta; Y. Masuda; I. Aguilar; A. Legarra; T. J. Lawlor; I. Misztal, JOURNAL OF DAIRY SCIENCE, 98, (6) 4090 - 4094, 2015 06 Genetic evaluation using single-step genomic best linear unbiased predictor in American Angus, D. A. L. Lourenco; S. Tsuruta; B. O. Fragomeni; Y. Masuda; I. Aguilar; A. Legarra; J. K. Bertrand; T. S. Amen; L. Wang; D. W. Moser; I. Misztal, JOURNAL OF ANIMAL SCIENCE, 93, (6) 2653 - 2662, 2015 06 Optimal genetic evaluation model for the Somatic Cell Score in Holstein population of Hokkaido, Japan, YAMAGUCHI SATOSHI; MASUDA YUTAKA; NAKAGAWA SATOSHI; GOTO YUSAKU; ABE HAYATO; BABA TOSHIMI; KAWAHARA TAKAYOSHI; SUZUKI MITSUYOSHI, 日本畜産学会報, Zootechnical Science Society of Japan, 86, (2) 153 - 164, 2015 05 Genetic analysis of twinning rate and milk yield using a threshold-linear model in Japanese Holsteins, Yutaka Masuda; Toshimi Baba; Mitsuyoshi Suzuki, ANIMAL SCIENCE JOURNAL, 86, (1) 31 - 36, 2015 01 Application of supernodal sparse factorization and inversion to the estimation of (co) variance components by residual maximum likelihood, Y. Masuda; T. Baba; M. Suzuki, JOURNAL OF ANIMAL BREEDING AND GENETICS, 131, (3) 227 - 236, 2014 06 Reliability of estimated breeding value of conception rate for Holstein female using multiple-trait animal model, HAGIYA Koichi; OSAWA Takefumi; SHIRAI Tatsuo; TERAWAKI Yoshinori; YAMAZAKI Takeshi; NAGAMINE Yoshitaka; ITOH Fumiaki; KAWAHARA Takayoshi; MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho (Japanese), (公社)日本畜産学会, 85, (2) 131 - 138, 2014 05 Genetic correlations between production and disease traits during first lactation in Holstein cows, K. Hagiya; T. Yamazaki; Y. Nagamine; K. Togashi; S. Yamaguchi; Y. Gotoh; T. Kawahara; Y. Masuda; M. Suzuki, ANIMAL, 8, (2) 217 - 223, 2014 02 Estimation of genetic parameters for body weight and ten body measurements at different age stages in Breton and Percheron horses, Y. Masuda; Y. Kubo; D. Yamashita; F. Kashiwamura; M. Suzuki, Nihon Chikusan Gakkaiho (Japanese), 日本畜産学会, 85, (1) 1 - 12, 2014 02 Relationships between conception rate in Holstein heifers and cows and milk yield at various stages of lactation, K. Hagiya; Y. Terawaki; T. Yamazaki; Y. Nagamine; F. Itoh; S. Yamaguchi; H. Abe; Y. Gotoh; T. Kawahara; Y. Masuda; M. Suzuki, ANIMAL, 7, (9) 1423 - 1428, 2013 09 Optimal combination of traits to estimate breeding value of herd life using multiple trait model, HAGIYA Koichi; OSAWA Takefumi; MASUDA Yutaka; SUZUKI MItsuyoshi; YAMAZAKI Takeshi; NAGAMINE YOshitaka; TOGASHI Kenji, Nihon Chikusan Gakkaiho, (公社)日本畜産学会, 83, (2) 117 - 123, 2012 05 Phenotypic and genetic factors of twinning rate in Japanese Holsteins, BABA Toshimi; KANEKO Hitomi; MASUDA Yutaka; SUZUKI MItsuyoshi, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), 日本畜産学会, 83, (2) 125 - 132, 2012 05 Change of genetic correlations among herd life and production/type traits over time of Holsteins in Japan, HAGIYA Koichi; OSAWA Takafumi; MASUDA Yutaka; SUZUKI Mitsuyoshi; YAMAZAKI Takeshi; TOGASHI Kenji, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), (公社)日本畜産学会, 83, (1) 9 - 19, 2012 02 Relationship between genetic abilities of Japanese Black sires predicted from Japanese Black and crossbred population, NAKAHASHI Yoshinobu; MASUDA Yutaka; KUCHIDA Keigo, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), 日本畜産学会, 83, (1) 21 - 28, 2012 02 Estimation of genetic parameters for fatty acid composition in of M. Longissimus thorasis of Japanese Black cattle, NAKAHASHI Yoshinobu; YUSA Tetsuro; MASUDA Yutaka; HIDAKA Satoshi; KUCHIDA Keigo, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), 日本畜産学会, 83, (1) 29 - 34, 2012 02 Comparison of genetic evaluation models for lactation persistency, MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), Japanese Society of Animal Science, 82, (3) 297 - 304, 2011 08 Selecting the desirable method for predicting 305-day lactation yields in Mongolia, Gelegjamts Naranchuluum; Hiroko Ohmiya; Yutaka Masuda; Kouichi Hagiya; Mitsuyoshi Suzuki, ANIMAL SCIENCE JOURNAL, 82, (3) 383 - 389, 2011 03 Genotype×environment interaction in feeding systems and sire countries for Holsteins, BABA Toshimi; SHIMIZU Chika; HASHIMOTO Yuko; MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), Japanese Society of Animal Science, 82, (1) 1 - 7, 2011 02 Relationships Between the First Ovulation Postpartum and Polymorphism in Genes Relating to Function of Immunity, Metabolism and Reproduction in High-producing Dairy Cows, Koumei Shirasuna; Chiho Kawashima; Chiaki Murayama; Yuka Aoki; Yutaka Masuda; Katsuya Kida; Motozumi Matsui; Takashi Shimizu; Akio Miyamoto, JOURNAL OF REPRODUCTION AND DEVELOPMENT, 57, (1) 135 - 142, 2011 02 Predicting 305-day lactation yields from early part-lactation yields in Japanese dairy cattle using multiple-trait prediction procedure, YAMAGUCHI Satoshi; KAWAHARA Takayoshi; GOTOH Yusaku; NAKAGAWA Satoshi; MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), Japanese Society of Animal Science, 81, (4) 401 - 412, 2010 11 Influences of genetic and environmental factors on cow conception rate of Holsteins in Japan using longitudinal binary data, KAWAHARA Takayoshi; GOTOH Yusaku; MASUDA Yutaka; YAMAGUCHI Satoshi; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho, Japanese Society of Animal Science, 81, (2) 121 - 132, 2010 05 Relationships between reproductive traits of heifers and cows and yield traits for Holsteins in Japan, H. Abe; Y. Masuda; M. Suzuki, JOURNAL OF DAIRY SCIENCE, 92, (8) 4055 - 4062, 2009 08 Genetic relationships of age at first calving, and reproductive traits of cows and yield traits for Holsteins in Hokkaido, ABE Hayato; MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho, 日本畜産学会, 79, (2) 203 - 209, 2008 05 Investigation of genetic and environmental factors for test day milk yields on each stage of lactation for holstein cattle in Hokkaido, MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho, Japanese Society of Animal Science, 79, (1) 9 - 18, 2008 02 Comparison of the Optimum Lactation Curve Models in Holstein Population of Japan, YAMAGUCHI Satoshi; KAWAHARA Takayoshi; GOTOH Yusaku; MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho, Japanese Society of Animal Science, 78, (4) 415 - 425, 2007 11 Short communication: A positive relationship between the first ovulation postpartum and the increasing ratio of milk yield in the first part of lactation in dairy cows, C. Kawashima; C. Amaya Montoya; Y. Masuda; E. Kaneko; M. Matsui; T. Shimizu; N. Matsunaga; K. Kida; Y. -I. Miyake; M. Suzuki; A. Miyamoto, JOURNAL OF DAIRY SCIENCE, 90, (5) 2279 - 2282, 2007 05
Books etc
乳牛改良で生産性向上, 寺脇良悟監修, 第3章, デーリィマン社, 2016 10 , 9784864530415 乳牛管理の基礎と応用 2012年改訂版, 口絵; 古村 圭子; 柏村文郎; 古村圭子; 増子孝義, 第9章第2節, デーリィ・ジャパン社, 2012 04 , 4924506621 徹底・後継牛づくり, 柏村文郎; 鈴木三義監修, I章 6. 新たな遺伝標識を活用した後継牛づくりの実践と可能性, デーリィマン社, 2010 10 , 9784938445942 新時代の乳牛改良, 鈴木三義; 寺脇良悟監修, 第4章 乳牛の健康・作業性・成熟度の改良, 酪農学園大学エクステンションセンター, 2009 03 , 9784902786101
Conference Activities & Talks
ホルスタインの異なる 泌乳ステージにおける乳中FAと泌乳形質との遺伝相関, 山本 直樹; 増田 豊, 北海道畜産草地学会 第13回学会大会 ホルスタインの乳中脂肪酸組成に関する変量回帰係数の最適な次数の検討, 増田 豊, 日本畜産学会第132回大会 乳用牛の乳中脂肪酸組成における遺伝と飼養環境の交互作用の推定, 山本 直樹; 増田 豊, 日本畜産学会第132回大会 Genotype by management-system interaction on origin group of milk fatty acids for Holsteins, Y. Masuda; N. Yamamoto; D. A. L. Lourenco; S. Tsuruta; I. Misztal, The 75th EAAP Annual Meeting Genome-wide association study on origin groups of milk fatty acids at early stages in the first lactation for Holsteins, Yutaka Masuda, American Dairy Science Association (ADSA) Annual Meeting 2024 ホルスタインの泌乳前期における乳中脂肪酸組成と泌乳形質との遺伝相関, 山本 直樹; 増田 豊, 北海道畜産草地学会 第12回学会大会 乳用牛群におけるゲノミックヤングサイアの利用に関するリスク評価, 増田 豊, 北海道畜産草地学会 第12回学会大会 北海道のホルスタイン集団における乳中脂肪酸組成の泌乳曲線, 山本 直樹; 増田 豊, 日本畜産学会第131回大会 北海道のホルスタインにおける 乳中脂肪酸組成に関する3産次 までの遺伝的パラメータの推定, 増田 豊, 日本畜産学会第131回大会 Genetic parameters for the composition of milk fatty acid of Holsteins, Yutaka Masuda, The 74th EAAP Annual Meeting Environmental factors and genetic parameters for milk fatty acids in Japanese Holstein cattle, Yutaka Masuda, American Dairy Science Association 2023 Annual Meeting SNP情報のゲノミック評価以外の活用法, 増田 豊, 令和4年度ゲノミック評価手法普及・啓発セミナー 第2部, 畜産技術協会 ゲノミック評価に関する世界情勢と研究動向, 増田 豊, 令和4年度ゲノミック評価手法普及・啓発セミナー 第1部, 畜産技術協会 ヤングサイアを活用した我が国の乳用牛改良の加速化, 増田 豊, JAAB勉強会 Challenges, opportunities and direction for dairy-cattle genetic improvement in Thailand, Yutaka Masuda, The role and importance of dairy genetic improvement in the development of Thai dairy-cattle industry under Thailand-FAO CPF. 乳用牛の初産記録に基づく選抜が泌乳成熟曲線の遺伝的トレンドに及ぼす影響, 増田 豊, 日本畜産学会第130回大会 An iterative method for de-regressed proof in single-step genomic BLUP and its application to a dairy cattle population, Yutaka Masuda, The 12th World Congress on Genetics Applied to Livestock Production (WCGALP) 家畜におけるゲノミック選抜の現状と展望, 増田 豊, 酪農学園大学・雪印種苗株式会社 共催酪農セミナー 北米の肉用牛と乳用牛の育種改良の現状, 増田 豊, 十勝AI協会研修会 畜産における ゲノム育種の現状と課題, 増田 豊, 日本動物遺伝育種学会 第22回大会 シンポジウム アメリカ(北米)における育種改良の実状, 増田 豊, 令和3(2021)年度 石狩家畜人工授精師協会研修会 乳用牛における泌乳量の成熟度の遺伝的トレンド, 増田 豊, 日本畜産学会第129回大会 家畜とくに乳用牛の遺伝・育種におけるSDGsに向けた取り組み, 増田 豊, 北海道畜産草地学会 第10回大会シンポジウム Unknown-parent group and metafounder models for missing pedigree in ssGBLUP, Yutaka Masuda, The 72nd EAAP Annual Meeting Preliminary results on de-regressed proof in single-step GBLUP, Yutaka Masuda, ICAR/Interbull Virtual Conference 2021 Genomic prediction with single-step genomic BLUP using a subset of genotypes in US Holstein, Yutaka Masuda, The 71st EAAP Annual Meeting Genomic prediction with single-step genomic BLUP using a subset of genotypes in US Holstein, Yutaka Masuda, American Dairy Science Association (ADSA) Virtual Annual Meeting Genomic prediction with missing pedigrees in single-step GBLUP in a large-scale genotyped population, MASUDA, Yutaka, The 126th Annual Meeting of Japanese Socioty of Animal Science Genomic prediction with missing pedigrees in single-step GBLUP for production traits in US Holstein, MASUDA, Yutaka, The 70th EAAP Annual Meeting Efficient quality control methods for genomic and pedigree data used in routine genomic evaluation, MASUDA, Yutaka, ASAS-CSAS Annual Meeting and Trade Show Genomic prediction with unknown-parent groups and metafounders for production traits in US Holsteins, MASUDA, Yutaka, American Dairy Science Association (ADSA) Annual Meeting Single-step GBLUP including more than 2 million genotypes with missing pedigrees for production traits in US Holstein, MASUDA, Yutaka, 2019 Interbull Annual Meeting Alternative covariance structures including unknown-parent groups and metafounders in single-step genomic BLUP, MASUDA, Yutaka, Gordon Research Conference Quantitative Genetics and Genomics Genomic predictability of single-step GBLUP for production traits in US Holstein, MASUDA, Yutaka, The 69th EAAP Annual Meeting Genomic predictability of single-step GBLUP for production traits in US Holstein., MASUDA, Yutaka, ADSA 2018 Annual Meeting Pre-selection bias and validation method in single-step GBLUP for production traits in US Holstein, MASUDA, Yutaka, 11th World Congress on Genetics Applied to Livestock Production (WCGALP) Including causative variants into single step genomic BLUP., B. D. Fragomeni; D. A. L. Lourenco; Y. Masuda; A. Legarra; I. Misztal, JOURNAL OF ANIMAL SCIENCE, AMER SOC ANIMAL SCIENCE Genetic trends from single-step GBLUP and traditional BLUP for production traits in US Holstein, MASUDA, Yutaka, ADSA 2017 Annual Meeting Selected inversion in quantitative genetics. In MS78: Selected inversion and its application, MASUDA, Yutaka, SIAM Conference on Computational Science & Engineering (CSE17) Tests of single-step GBLUP for production traits in US Holsteins, MASUDA, Yutaka, Interbull Technical Workshop 2017 Single-step GBLUP using APY inverse for protein yield in US Holstein with a large number of genotyped animals, MASUDA, Yutaka, The 67th EAAP Annual Meeting Single-step GBLUP using APY inverse for protein yield in US Holstein with a large number of genotyped animals, MASUDA, Yutaka, ASAS & ADSA Joint Annual Meeting (JAM) 2016, Salt Lake City, UT (USA), July 19-23, 2016 Genomic predictions with approximated G-inverse for a large genotyped population, MASUDA, Yutaka, The 66th EAAP Annual Meeting, Warsaw (Poland), August 31 to September 4, 2015 Genomic predictions with APY G-inverse for a large number of genotyped animals, MASUDA Yutaka, ASAS & ADSA Joint Annual Meeting (JAM) 2015, Orlando, FL (USA), July 12-16, 2015 Single-step evaluation in the US Holstein population with 570k genotyped animals, MASUDA Yutaka, Interbull Annual Meeting 2015, Orlando, FL (USA), July 9-11, 2015 Acceleration of computations in AI REML for single-step GBLUP models, MASUDA Yutaka, 10th World Congress on Genetics Applied to Livestock Production, Vancouver (Canada), August 17-22, 2014 Advantage of supernodal methods in REMLwhen dense matrices are involved in a coefficient matrix of mixed model equations, MASUDA Yutaka, ASAS & ADSA Joint Annual Meeting (JAM) 2014, Kansas City, MO (USA), July 20-24, 2014 ホルスタイン種の多産次変量回帰検定日モデルによる泌乳形質および泌乳持続性の遺伝的パラメータの推定, 大澤剛史; 萩谷功一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 泌乳形質および受胎率に関する異なる暑熱環境間の遺伝相関, 萩谷功一; 早坂貴代史; 山崎武志; 白井達夫; 大澤剛史; 寺脇良悟; 長嶺慶隆; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 Efficient inversion of a large genomic relationship matrix stored on a disk using a CPU & GPUs, MASUDA Yutaka, ASAS & ADSA Joint Annual Meeting (JAM) 2013, Indianapolis, IN (USA), July 8-12, 2013 ホルスタイン種の受胎率に関する推定育種価の信頼性, 萩谷功一; 大澤剛史; 白井達夫; 寺脇良悟; 山崎武志; 長嶺慶隆; 伊藤文彰; 河原孝吉; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 乳用牛の牛群曲線を考慮した多産次変量回帰検定日モデルの検討, 大澤剛史; 萩谷功一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 Sparse structures for mixed model equations (MME) for different animal models., MASUDA Yutaka, The 63rd EAAP Annual Meeting, Bratislava (Slovakia), August 27-31, 2012 多形質モデルによる在群性の育種価推定のために最適な形質の組み合わせ, 萩谷功一; 大澤剛史; 増田豊; 鈴木三義; 山崎武志; 長嶺慶隆; 富樫研治, 日本畜産学会大会講演要旨, 公益社団法人 日本畜産学会, Optimal combination of traits was investigated to estimate the breeding value (BV) of herd life using multiple trait model. Data were first lactation records of milk, somatic cell score (SCS) and 9 type traits (feet and legs, chest width, angularity, rump angle, foot angle, rear udder height, udder support, udder depth, front teat placement) from 75,091 cows born between 2001 and 2002 with their pedigree records. Herd life was defined as censored records from birth to 84 months at age of cow. Various fixed effects were considered for herd life (herd-year, calving age), milk and SCS (herd-year, calving month, calving age) and type traits (herd-classifier-classified day, age at classification, lactation stage) in the statistical models. When 9 traits model was used, the highest reliability of the estimated BV for herd-life was obtained from a combination of herd life, milk, SCS, feet and legs, chest width, angularity, udder support, udder depth and front teat placement. 乳用牛におけるゲノミック選抜の 応用と課題, 増田 豊, 第49回家畜育種研究会談話会 制限付き最尤法による分散成分の推定における現代的な疎行列技法の応用, 増田 豊, 日本畜産学会第115回大会 Genetic relationships among metabolic profile components, body condition score, persistency of lactation and milk yield in holstein cattle, MASUDA, Yutaka, 9th World Congress on Genetics Applied to Livestock Production, Leipzig (Germany), August 1-6, 2010 乳用牛の加齢による乳量の分散の変動を説明するモデルに関する検討, 萩谷功一; 大澤剛史; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 泌乳持続性と分娩間隔との遺伝的関連性, 萩谷功一; 富樫研治; 武田尚人; 山崎武志; 白井達夫; 佐分淳一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 Estimation of genetic and phenotypic parameters for days open and test day milk yields in Japanese Holsteins, Y. Masuda; H. Abe; M. Suzuki, JOURNAL OF DAIRY SCIENCE, AMER DAIRY SCIENCE ASSOC Phenotypic and genetic analysis of days open for Japanese Holstein cows, H. Abe; M. Suzuki; Y. Masuda, JOURNAL OF DAIRY SCIENCE, AMER DAIRY SCIENCE ASSOC Estimation of genetic and phenotypic parameters for days open and test day milk yields in Japanese Holsteins, Y. Masuda; H. Abe; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, AMER SOC ANIMAL SCIENCE Phenotypic and genetic analysis of days open for Japanese Holstein cows, H. Abe; M. Suzuki; Y. Masuda, JOURNAL OF ANIMAL SCIENCE, AMER SOC ANIMAL SCIENCE ホルスタイン種における泌乳持続性に関する遺伝的パラメータの推定, 萩谷功一; 富樫研治; 武田尚人; 山崎武志; 白井達夫; 佐分淳一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 The first ovulation of dominant follicle within three weeks postpartum closely relates to metabolic status and peak milk yield in high-producing dairy cows., A. Miyamoto; M. Kataoka; Y. Masuda; C. Kawashima; E. Kaneko; N. Matsunaga; M. Matsui; M. Ishii; K. Kida; Y. -I. Miyake; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, AMER SOC ANIMAL SCIENCE Estimation of genetic parameters for maturity of lactation in Japanese Holsteins., Y. Masuda; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, AMER SOC ANIMAL SCIENCE
Misc
乳房炎にかかわる遺伝子, 増田 豊, 臨床獣医 臨時増刊号 トピックで学ぶ牛の乳房炎, 43, 2025 06 牛におけるゲノミック選抜法の積極的な活用 第4回 ゲノミック選抜の活用戦略, 増田 豊, 繁殖技術, 43, (2) 41 - 44, 2023 03 牛におけるゲノミック選抜法の積極的な活用 第3回 ゲノミック育種価の信頼度と最適な種雄牛選択, 増田 豊, 繁殖技術, 42, (5) 123 - 129, 2022 09 牛におけるゲノミック評価における抗病性, 増田 豊, 臨床獣医, 40, (8) 30 - 34, 2022 07 Investigating genetic redundancy as a source of genetic diversity and adaptability in the U.S. Holstein breed, Steyn, Y; Lawlor, T.J; Tsuruta, S; Masuda, Y; Legarra, A; Lourenco, D.A.L; Misztal, I, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 2022 07 Population structure of U.S. Holsteins allows for a snapshot of allele frequency changes and family specific SNPs, Lawlor, T.J; Steyn, Y; Tsuruta, S; Masuda, Y; Lourenco, D.A.L; Misztal, I, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 2022 07 How ssGBLUP became suitable for national dairy cattle evaluations, Misztal, I; Lourenco, D; Tsuruta, S; Aguilar, I; Masuda, Y; Bermann, M; Cesarani, A; Legarra, A, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 2022 07 Recent updates in the BLUPF90 software suite, Lourenco, D; Tsuruta, S; Aguilar, I; Masuda, Y; Bermann, M; Legarra, A; Misztal, I, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 36_012, 2022 07 A deregression method for a single-step SNP BLUP model using all genotype data, Z Liu; Y Masuda, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 2022 07 An alternative method to consider a reference population in Single-Step SNP BLUP model without separating genomic terms, Osawa, T; Baba, T; Masuda, Y; Kawahara, T; Goto, Y, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 2022 07 牛におけるゲノミック選抜法の積極的な活用 第2回 DNA情報を用いる選抜法, 増田 豊, 繁殖技術, 42, (3) 89 - 94, 2022 07 Genomic prediction of milk-production traits in Thai dairy cattle, Pattarapol Sumreddee; Sayan Buaban; Somsak Prempree; Kiettisak Lengnudum; Jatuporn Pongpeng; Korbsook Thongsodsaeng; Monchai Duangjinda; Praopilas Phakdeedindan; Yutaka Masuda, 2022 Current trends of livestock research in Taiwan and Southeast Asian Countries Organized by Department of Animal Science, National Chung Hsing University, Taiwan June 29 – July 1, 2022 (online), 2022 06 牛におけるゲノミック選抜法の積極的な活用 第1回 従来選抜法の問題とゲノミック選抜法への期待, 増田 豊, 繁殖技術, 42, (3) 53 - 58, 2022 05 牛群サイズまたは繁殖成績が上位の乳用牛群記録に基づく推定育種価の精度の検証, 山崎武志; 大澤剛史; 増田豊, 日本畜産学会大会講演要旨, 130th, 2022 A deregression method for single-step genomic model using all genotype data, Zengting Liu; Yutaka Masuda, Interbull Bulletin, 56, 2021 09 Deregression formula for single-step genomic BLUP, Yutaka Masuda; Zengting Liu; Peter Sullivan, Interbull Bulletin, 56, 2021 09 , https://journal.interbull.org/index.php/ib/article/view/71 Studies on inflation of GEBV in single-step GBLUP for type, I. Misztal; H. L. Bradford; D. A. L. Lourenco; S. Tsuruta; Y. Masuda; A. Legarra; T. J. Lawlor, Interbull Bulletin, 51, 2017 09 Including causative variants into single step genomic BLUP., B. D. Fragomeni; D. A. L. Lourenco; Y. Masuda; A. Legarra; I. Misztal, JOURNAL OF ANIMAL SCIENCE, 95, 2017 08 , 10.2527/asasann.2017.193 Direct and indirect genomic evaluations in beef cattle, D. A. L. Lourenco; I. Misztal; S. Tsuruta; B. O. Fragomeni; I. Aguilar; Y. Masuda; D. Moser, Interbull Bulletin, 49, 2015 08 Single-step genomic evaluations with 570K genotyped animals in US Holsteins, Y. Masuda; I. Misztal; S. Tsuruta; D. A. L. Lourenco; B. O. Fragomeni; A. Legarra; I. Aguilar; T. J. Lawlor, Interbull Bulletin, 49, 2015 08 Efficient inversion of genomic relationship matrix by the algorithm for proven and young (APY), I. Misztal; B. O. Fragomeni; D. A. L. Lourenco; S. Tsuruta; Y. Masuda; I. Aguilar; A. Legarra; T. Lawlor, Interbull Bulletin, 49, 2015 08 ホルスタイン種の多産次変量回帰検定日モデルによる泌乳形質および泌乳持続性の遺伝的パラメータの推定, 大澤剛史; 萩谷功一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 118th, 2014 03 27 泌乳形質および受胎率に関する異なる暑熱環境間の遺伝相関, 萩谷功一; 早坂貴代史; 山崎武志; 白井達夫; 大澤剛史; 寺脇良悟; 長嶺慶隆; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 117th, 2013 09 09 各泌乳ステージにおける乳量と受胎率間の遺伝的関係, 萩谷功一; 寺脇良悟; 山崎武志; 長嶺慶隆; 伊藤文彰; 山口諭; 阿部隼人; 後藤裕作; 河原孝吉; 増田豊; 鈴木三義, 北海道畜産草地学会報, 1, 2013 03 29 乳用牛の牛群曲線を考慮した多産次変量回帰検定日モデルの検討, 大澤剛史; 萩谷功一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 116th, 2013 03 28 ホルスタイン種の受胎率に関する推定育種価の信頼性, 萩谷功一; 大澤剛史; 白井達夫; 寺脇良悟; 山崎武志; 長嶺慶隆; 伊藤文彰; 河原孝吉; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 116th, 2013 03 28 多形質モデルによる在群性の育種価推定のために最適な形質の組み合わせ, 萩谷功一; 大澤剛史; 増田豊; 鈴木三義; 山崎武志; 長嶺慶隆; 富樫研治, 日本畜産学会大会講演要旨, 115th, (2) 159 - 123, 2012 03 28 , Optimal combination of traits was investigated to estimate the breeding value (BV) of herd life using multiple trait model. Data were first lactation records of milk, somatic cell score (SCS) and 9 type traits (feet and legs, chest width, angularity, rump angle, foot angle, rear udder height, udder support, udder depth, front teat placement) from 75,091 cows born between 2001 and 2002 with their pedigree records. Herd life was defined as censored records from birth to 84 months at age of cow. Various fixed effects were considered for herd life (herd-year, calving age), milk and SCS (herd-year, calving month, calving age) and type traits (herd-classifier-classified day, age at classification, lactation stage) in the statistical models. When 9 traits model was used, the highest reliability of the estimated BV for herd-life was obtained from a combination of herd life, milk, SCS, feet and legs, chest width, angularity, udder support, udder depth and front teat placement. 酪農現場での種雄牛の選定における問題点の解明, 橋本 優子; 馬場 俊見; 増田 豊; 鈴木 三義, 繁殖技術, 30, (2) 23 - 26, 2010 09 ゲノム解析と乳牛改良 ゲノミック評価について, 増田 豊, 家畜人工授精, (259) 1 - 6, 2010 07 乳用牛の加齢による乳量の分散の変動を説明するモデルに関する検討, 萩谷功一; 大澤剛史; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 111th, 2009 09 28 泌乳持続性と分娩間隔との遺伝的関連性, 萩谷功一; 富樫研治; 武田尚人; 山崎武志; 白井達夫; 佐分淳一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 107th, 2007 03 27 Phenotypic and genetic analysis of days open for Japanese Holstein cows, H. Abe; M. Suzuki; Y. Masuda, JOURNAL OF ANIMAL SCIENCE, 85, 2007 Estimation of genetic and phenotypic parameters for days open and test day milk yields in Japanese Holsteins, Y. Masuda; H. Abe; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, 85, 2007 Phenotypic and genetic analysis of days open for Japanese Holstein cows, H. Abe; M. Suzuki; Y. Masuda, JOURNAL OF DAIRY SCIENCE, 90, 2007 Estimation of genetic and phenotypic parameters for days open and test day milk yields in Japanese Holsteins, Y. Masuda; H. Abe; M. Suzuki, JOURNAL OF DAIRY SCIENCE, 90, 2007 ホルスタイン種における泌乳持続性に関する遺伝的パラメータの推定, 萩谷功一; 富樫研治; 武田尚人; 山崎武志; 白井達夫; 佐分淳一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 106th, 2006 03 20 Estimation of genetic parameters for maturity of lactation in Japanese Holsteins., Y. Masuda; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, 84, 2006 The first ovulation of dominant follicle within three weeks postpartum closely relates to metabolic status and peak milk yield in high-producing dairy cows., A. Miyamoto; M. Kataoka; Y. Masuda; C. Kawashima; E. Kaneko; N. Matsunaga; M. Matsui; M. Ishii; K. Kida; Y. -I. Miyake; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, 84, 2006 Estimation of genetic parameters and breeding values for persistency of lactation in Japanese Holsteins, Y. Masuda; M. Suzuki, JOURNAL OF DAIRY SCIENCE, 88, 2005 Estimation of genetic parameters and breeding values for persistency of lactation in Japanese Holsteins, Y. Masuda; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, 83, 2005
Awards & Honors
2021 04 , Japanese Society of Animal Science, Excellent Paper Award (Animal Science Journal), Effects of heat stress on production, somatic cell score and conception rate in Holsteins
Research Grants & Projects
日本学術振興会, 科学研究費助成事業 基盤研究(C), 乳中脂肪酸組成におけるゲノムと飼養環境との相互作用の解明とゲノミック選抜への応用, 20220401, 20250331, 増田 豊 全国競馬・畜産振興会, 全国競馬・畜産振興会畜産振興事業, 乳用牛の泌乳前期健全性改善指標開発事業, 202205, 202503 日本学術振興会, 科学研究費助成事業 研究活動スタート支援, 仮親を伴うシングル・ステップ法における育種価予測値のバイアス発生メカニズムの解明, 202108, 202503, 増田 豊, シングルステップ法は、観測データ、血縁関係、ゲノム情報を結びつけることで個々の育種価を予測し、特に情報量の少ない若齢個体の選抜の正確度を向上させるゲノミック選抜手法である。血縁情報はしばしば欠損するため、血統表の不明親に「仮親」を割り当て、育種価予測値の偏りを軽減するモデルが提案されている。本研究の目的は、血縁関係に欠損がある場合に、情報量の欠落に応じて育種価予測値がどのように偏るかを調査し、偏りの少ない最適な仮親モデルを提案することを目指す。
初年度である本年度は、シミュレーションにより、血縁にさまざまな欠損パターンをもつ疑似データを生成した。本研究の目的に沿ったデータを生成するため、既存のシミュレーションプログラムを修正した。そのシミュレーションは、乳用牛の繁殖構造を模したものであった。1頭の種雄牛が多数の後代牛を持ち、その後代牛（雌牛）が複数の群にまたがって飼養されていた。生成された直後のデータには血統情報の欠落がなかったが、事後的に母方の血縁情報を欠損させた。欠損のパターンとして、ランダムに血縁が欠損する状況、特定の種雄牛の後代に欠損が集中する状況、遺伝的能力の低い後代に欠損が集中する状況を想定した。ゲノム情報を用いないアニマルモデルBLUP法による遺伝能力評価を行うと、仮親を用いない場合には、いずれの欠損パターンにおいても遺伝的トレンドの過小推定がみられたが、その程度は欠損の程度に依存した。仮親を含めると、遺伝的トレンドは真値に近づいたが、仮親のもつ個体数が十分ではない場合にはバイアスを除去できなかった。 乗用馬ならびに農用馬の遺伝的改良に関する研究, 201004 乳牛におけるゲノミック選抜（genomic selection）の応用, 2009, 密なSNPマーカーを用いて乳用牛の遺伝能力評価を行う際の，最適な育種計画，手法および検証方法について検討する。 家畜の量的形質に対する変量回帰（random regression）分析の応用, 2008 genetic improvement of life time production performance for dairy cattle, 2005, 2007 乳用牛の生涯生産能力に関する遺伝的改善, 2005
社会貢献活動情報
Social Contribution
2024 01 18 , 乳牛の改良と牛群検定, 令和5年度 酪農ヘルパー初級者養成研修カリキュラム# 2023 01 19 , 乳牛の改良と牛群検定, 令和4年度 酪農ヘルパー中級者養成研修カリキュラム#
教員総覧
E-Mail：
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Last Update :2025/06/09
Researcher Profile and Settings
Name
| MASUDA Yutaka |
Affiliation (Master)
| College of Agriculture,Food and Environment Sciences, Department of Sustainable Agriculture |
Affiliation & Job
| Rakuno Gakuen University |
| College of Agriculture, Food and Environment Sciences, Department of Sustainable Agriculture |
| Associate Professor |
Education
| 2005 04 - 2008 03 , Iwate University, The United Graduate School of Agricultural Sciences, Science of Bioproduction |
| 2003 04 - 2005 03 , Obihiro University of Agriculture and Veterinary Medicine, Grduate School of Agriculture and Veterinary Medicine, Animal Production and Agricultural Economics |
| 1996 04 - 2000 03 , Obihiro University of Agriculture and Veterinary Medicine, Faculty of Animal Husbandry, Animal Production and Agricultural Economics |
Degree
| Ph.D. in Bioproduction Science (Animal Production), Iwate University |
Association Memberships
| Hokkaido Society of Livestock and Grassland Science |
| American Society of Animal Science |
| American Dairy Science Association |
| JAPANESE SOCIETY OF ANIMAL SCIENCE |
Committee Memberships
| 2021 06 - Today, Livestock Improvement Association of Japan (LIAJ), Committee for the Dairy Cattle Improvement System (genetic evaluation methods) |
| 2021 - 2026 , The Permanent Committee of WCGALP, The representative of Japan |
| 2021 04 - 2023 03 , Holstein Cattle Association of Japan, Member of the Promotion Committee for the Research Project for Genetic Improvement of Longevity in Dairy Cattle |
| 2021 - 2023 , Frontiers in Genetics, Review Editor |
| 2021 - 2023 , Hokkaido Society of Livestock and Grassland Science, Section editor |
Research Activities
Research Areas
| Life sciences, Genetics, quantitative genetics |
| Life sciences, Animal production science, animal breeding and genetics |
Research Interests
| statistics, |
| dairy cattle, |
| programming, |
| numerical computing, |
| data science, |
| quantitative genetics, |
| genomic selection, |
| animal breeding, |
Published Papers
| Investigation of the effect of heat stress on egg production traits in Thai native chickens (Lueng Hang Kao Kabin) as determined by the temperature-humidity index., Krittaphak Buranawit; Nalinee Imboonta; Siriporn Tongsiri; Yutaka Masuda; Praopilas Phakdeedindan, Poultry science, 104, (7) 105196 - 105196, 2025 04 19 |
| 北海道のホルスタイン雌牛における乳中脂肪酸組成の泌乳曲線, 山本 直樹; 山崎 武志; 西浦 明子; 萩谷 功一; 阿部 隼人; 中堀 祐香; 増田 豊, 日本畜産学会報, 95, (3) 193 - 200, 2024 08 |
| Genetic relationship of energy balance predicted from milk traits with fertility in Japanese Holsteins, Akiko Nishiura; Osamu Sasaki; Takeshi Yamazaki; Shigeki Yamaguchi; Koichi Hagiya; Satoshi Nakagawa; Hayato Abe; Yuka Nakahori; Yuriko Saito; Ryoki Tatebayashi; Yutaka Masuda, Animal Science Journal, Wiley, 95, (1) , 2024 07 |
| Risk of using genomically-tested young Holstein sires in Japanese dairy herds, Yutaka MASUDA, Nihon Chikusan Gakkaiho, Japanese Society of Animal Science, 95, (1) 31 - 37, 2024 02 25 |
| Effects of heat stress on predicted energy balance, fat-to-protein ratio, and milk β-hydroxybutyrate in first-lactation Holstein cattle in Hokkaido, Japan., Satoka Ishida; Akiko Nishiura; Takeshi Yamazaki; Hayato Abe; Satoshi Nakagawa; Yuka Nakahori; Shigeki Yamaguchi; Yutaka Masuda; Yuriko Saito; Ryoki Tatebayashi; Takefumi Osawa; Che-Hsuan Huang; Koichi Hagiya, Animal science journal = Nihon chikusan Gakkaiho, 95, (1) , 2024 |
| Genetic correlations between milk fatty acids grouped according to origin until 95 days in milk and fertility of Holstein cows in Japan., Takeshi Yamazaki; Akiko Nishiura; Yuzu Chiba; Satoshi Nakagawa; Hayato Abe; Yuka Nakahori; Koichi Hagiya; Takefumi Osawa; Yutaka Masuda, Animal science journal = Nihon chikusan Gakkaiho, 95, (1) , 2024 |
| Longitudinal genome-wide association analysis using a single-step random regression model for height in Japanese Holstein cattle, Toshimi Baba; Gota Morota; Junpei Kawakami; Yusaku Gotoh; Taro Oka; Yutaka Masuda; Luiz F. Brito; Rebbeca R. Cockrum; Takayoshi Kawahara, JDS Communications, American Dairy Science Association, 4, (5) 363 - 368, 2023 09 |
| Application of single-step single nucleotide polymorphism best linear unbiased predictor model with unknown-parent groups for type traits in Japanese Holsteins., Takefumi Osawa; Yutaka Masuda; Junichi Saburi; Keita Hirumachi, Journal of dairy science, 106, (7) 4847 - 4859, 2023 07 |
| Nonparallel genome changes within subpopulations over time contributed to genetic diversity within the US Holstein population., Y Steyn; T Lawlor; Y Masuda; S Tsuruta; A Legarra; D Lourenco; I Misztal, Journal of dairy science, 106, (4) 2551 - 2572, 2023 04 |
| Genome-wide search reveals the uniqueness of DNA regions associated with coat color and innate immunity in Hokkaido Native Horse., Tomoko Amano; Haruhi Yokawa; Yutaka Masuda; Teruaki Tozaki; Masahito Kawai; Kouichi Shirai, Animal science journal = Nihon chikusan Gakkaiho, 94, (1) , 2023 |
| Identifying influential sires and distinct clusters of selection candidates based on genomic relationships to reduce inbreeding in the US Holstein, Y. Steyn; Y. Masuda; S. Tsuruta; D.A.L. Lourenco; I. Misztal; T. Lawlor, Journal of Dairy Science, American Dairy Science Association, 105, (12) 9810 - 9821, 2022 12 |
| An iterative method for de-regressed proof in single-step genomic BLUP and its application to a dairy cattle population, Y Masuda; Z Liu; P Sullivan, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 2022 07 |
| Is single-step genomic REML with the algorithm for proven and young more computationally efficient when less generations of data are present?, Vinícius Silva Junqueira; Daniela Lourenco; Yutaka Masuda; Fernando Flores Cardoso; Paulo Sávio Lopes; Fabyano Fonseca E Silva; Ignacy Misztal, Journal of animal science, 100, (5) , 2022 03 15 |
| Invited review: Unknown-parent groups and metafounders in single-step genomic BLUP, Yutaka Masuda; Paul M. VanRaden; Shogo Tsuruta; Daniela A.L. Lourenco; Ignacy Misztal, Journal of Dairy Science, American Dairy Science Association, 105, (2) 923 - 939, 2022 02 |
| Genomic prediction of milk-production traits and somatic cell score using single-step genomic best linear unbiased predictor with random regression test-day model in Thai dairy cattle, S. Buaban; S. Prempree; P. Sumreddee; M. Duangjinda; Y. Masuda, Journal of Dairy Science, American Dairy Science Association, 104, (12) 12713 - 12723, 2021 09 |
| Investigating the persistence of accuracy of genomic predictions over time in broilers., Jorge Hidalgo; Daniela Lourenco; Shogo Tsuruta; Yutaka Masuda; Vivian Breen; Rachel Hawken; Matias Bermann; Ignacy Misztal, Journal of animal science, 99, (9) , 2021 08 11 |
| Reducing computational cost of large-scale genomic evaluation by using indirect genomic prediction, S. Tsuruta; D.A.L. Lourenco; Y. Masuda; T.J. Lawlor; I. Misztal, JDS Communications, American Dairy Science Association, 2021, (2) 923 - 939, 2021 08 |
| Genomic predictions for yield traits in US Holsteins with unknown parent groups, A. Cesarani; Y. Masuda; S. Tsuruta; E.L. Nicolazzi; P.M. VanRaden; D. Lourenco; I. Misztal, Journal of Dairy Science, American Dairy Science Association, 104, (5) 5843 - 5853, 2021 05 |
| Changes in genomic predictions when new information is added, Jorge Hidalgo; Daniela Lourenco; Shogo Tsuruta; Yutaka Masuda; Stephen Miller; Matias Bermann; Andre L S Garcia; Ignacy Misztal, Journal of Animal Science, Oxford University Press (OUP), 99, (2) , 2021 02 01 |
| Comparison of models for missing pedigree in single-step genomic prediction, Yutaka Masuda; Shogo Tsuruta; Matias Bermann; Heather L Bradford; Ignacy Misztal, Journal of Animal Science, Oxford University Press (OUP), 99, (2) , 2021 02 01 |
| Metafounders May Reduce Bias in Composite Cattle Genomic Predictions., Sabrina Kluska; Yutaka Masuda; José Bento Sterman Ferraz; Shogo Tsuruta; Joanir Pereira Eler; Fernando Baldi; Daniela Lourenco, Frontiers in genetics, 12, 678587 - 678587, 2021 |
| Validation of single‐step GBLUP genomic predictions from threshold models using the linear regression method: An application in chicken mortality, Matias Bermann; Andres Legarra; Mary Kate Hollifield; Yutaka Masuda; Daniela Lourenco; Ignacy Misztal, Journal of Animal Breeding and Genetics, Wiley, 138, (1) 4 - 13, 2021 01 |
| Genomic information in animal breeding: its use and prospects, Yutaka Masuda, Nihon Chikusan Gakkaiho, Japanese Society of Animal Science, 91, (3) 307 - 311, 2020 08 25 |
| Bias and accuracy of dairy sheep evaluations using BLUP and SSGBLUP with metafounders and unknown parent groups., Fernando L Macedo; Ole F Christensen; Jean-Michel Astruc; Ignacio Aguilar; Yutaka Masuda; Andrés Legarra, Genetics, selection, evolution : GSE, 52, (1) 47 - 47, 2020 08 12 |
| Beef trait genetic parameters based on old and recent data and its implications for genomic predictions in Italian Simmental cattle., Alberto Cesarani; Jorge Hidalgo; Andre Garcia; Lorenzo Degano; Daniele Vicario; Yutaka Masuda; Ignacy Misztal; Daniela Lourenco, Journal of animal science, 98, (8) , 2020 08 01 |
| Single-Step Genomic Evaluations from Theory to Practice: Using SNP Chips and Sequence Data in BLUPF90, Daniela Lourenco; Andres Legarra; Shogo Tsuruta; Yutaka Masuda; Ignacio Aguilar; Ignacy Misztal, Genes, MDPI AG, 11, (7) 790 - 790, 2020 07 14 |
| Variance components using genomic information for 2 functional traits in Italian Simmental cattle: Calving interval and lactation persistency., Alberto Cesarani; Giustino Gaspa; Yutaka Masuda; Lorenzo Degano; Daniele Vicario; Daniela A L Lourenco; Nicolò P P Macciotta, Journal of dairy science, 103, (6) 5227 - 5233, 2020 06 |
| Indirect predictions with a large number of genotyped animals using the algorithm for proven and young., Andre L S Garcia; Yutaka Masuda; Shogo Tsuruta; Stephen Miller; Ignacy Misztal; Daniela Lourenco, Journal of animal science, 98, (6) , 2020 06 |
| Changes in genetic parameters for fitness and growth traits in pigs under genomic selection., Jorge Hidalgo; Shogo Tsuruta; Daniela Lourenco; Yutaka Masuda; Yijian Huang; Kent A Gray; Ignacy Misztal, Journal of animal science, 98, (2) , 2020 02 |
| Accuracy of genomic BLUP when considering a genomic relationship matrix based on the number of the largest eigenvalues: a simulation study., Pocrnic I; Lourenco DAL; Masuda Y; Misztal I, Genetics, selection, evolution : GSE, 51, (1) , 2019 12 |
| Controlling bias in genomic breeding values for young genotyped bulls., Tsuruta S; Lourenco DAL; Masuda Y; Misztal I; Lawlor TJ, Journal of dairy science, 102, (11) 9956 - 9970, 2019 11 |
| Single-step genome-wide association for longitudinal traits of Canadian Ayrshire, Holstein, and Jersey dairy cattle., Oliveira HR; Lourenco DAL; Masuda Y; Misztal I; Tsuruta S; Jamrozik J; Brito LF; Silva FF; Cant JP; Schenkel FS, Journal of dairy science, 102, (11) 9995 - 10011, 2019 11 |
| Genetic parameters for mastitis incidence and its indicators based on somatic cell score for Holsteins in Hokkaido, Japan, Yamaguchi S; Masuda Y; Nakagawa S; Abe H; Gotoh Y; Baba T; Kawahara T, Animal Science Journal, 90, (8) 915 - 923, 2019 08 |
| Frequentist p-values for large-scale-single step genome-wide association, with an application to birth weight in American Angus cattle., Aguilar I; Legarra A; Cardoso F; Masuda Y; Lourenco D; Misztal I, Genetics, selection, evolution : GSE, 51, (1) , 2019 06 |
| A genome-wide single nucleotide polymorphism and copy number variation analysis for number of piglets born alive., Stafuzza NB; Silva RMO; Fragomeni BO; Masuda Y; Huang Y; Gray K; Lourenco DAL, BMC genomics, 20, (1) , 2019 04 |
| Application of single-step genomic evaluation using multiple-trait random regression test-day models in dairy cattle., Oliveira HR; Lourenco DAL; Masuda Y; Misztal I; Tsuruta S; Jamrozik J; Brito LF; Silva FF; Schenkel FS, Journal of dairy science, 102, (3) 2365 - 2377, 2019 03 |
| Modeling missing pedigree in single-step genomic BLUP., Bradford HL; Masuda Y; VanRaden PM; Legarra A; Misztal I, Journal of dairy science, 102, (3) 2336 - 2346, 2019 03 |
| International bull evaluations by genomic BLUP with a prediction population., Fragomeni B; Masuda Y; Bradford HL; Lourenco DAL; Misztal I, Journal of dairy science, 102, (3) 2330 - 2335, 2019 03 |
| Modeling pedigree accuracy and uncertain parentage in single-step genomic evaluations of simulated and US Holstein datasets., Bradford HL; Masuda Y; Cole JB; Misztal I; VanRaden PM, Journal of dairy science, 102, (3) 2308 - 2318, 2019 03 |
| Assessing genetic architecture and signatures of selection of dual purpose Gir cattle populations using genomic information, Amanda Marchi Maiorano; Daniela Lino Lourenco; Shogo Tsuruta; Alejandra Maria Toro Ospina; Nedenia Bonvino Stafuzza; Yutaka Masuda; Anibal Eugenio Vercesi Filho; Joslaine Noely dos Santos Goncalves Cyrillo; Rogério Abdallah Curi; Josineudson Augusto II de Vasconcelos Silva, PLOS ONE, Public Library of Science (PLoS), 13, (8) e0200694 - e0200694, 2018 08 02 |
| Differing genetic trend estimates from traditional and genomic evaluations of genotyped animals as evidence of preselection bias in US Holsteins, Masuda, Y; VanRaden, P. M; Misztal, I; Lawlor, T. J, Journal of Dairy Science, 101, (6) 5194 - 5206, 2018 06 |
| Carrier frequency of recessive disorders affected on embryonic loss and calf mortality in Japanese Holsteins, Toshimi BABA; Yusaku GOTOH; Satoshi YAMAGUCHI; Satoshi NAKAGAWA; Hayato ABE; Yutaka MASUDA; Takasyohi KAWAHARA, Nihon Chikusan Gakkaiho, 89, (2) 163 - 169, 2018 05 |
| Pre-selection bias and validation method in single-step GBLUP for production traits in US Holstein, Masuda, Y; VanRaden, P. M; Misztal, I; Lawlor, T. J, 11th World Congress on Genetics Applied to Livestock Production (WCGALP), 11.540, 2018 02 |
| Application of single-step genomic best linear unbiased prediction with a multiple-lactation random regression test-day model for Japanese Holsteins, Toshimi Baba; Yusaku Gotoh; Satoshi Yamaguchi; Satoshi Nakagawa; Hayato Abe; Yutaka Masuda; Takayoshi Kawahara, ANIMAL SCIENCE JOURNAL, 88, (8) 1226 - 1231, 2017 08 |
| Incorporation of causative quantitative trait nucleotides in single-step GBLUP, Breno O. Fragomeni; Daniela A. L. Lourenco; Yukata Masuda; Andres Legarra; Ignacy Misztal, GENETICS SELECTION EVOLUTION, 49, (1) , 2017 07 |
| Accuracy of breeding values in small genotyped populations using different sources of external information-A simulation study, S. Andonov; D. A. L. Lourenco; B. O. Fragomeni; Y. Masuda; I. Pocrnic; S. Tsuruta; I. Misztal, JOURNAL OF DAIRY SCIENCE, 100, (1) 395 - 401, 2017 01 |
| Technical note: Avoiding the direct inversion of the numerator relationship matrix for genotyped animals in single-step genomic best linear unbiased prediction solved with the preconditioned conjugate gradient, Y. Masuda; I. Misztal; A. Legarra; S. Tsuruta; D. A. L. Lourenco; B. O. Fragomeni; I. Aguilar, JOURNAL OF ANIMAL SCIENCE, 95, (1) 49 - 52, 2017 01 |
| Effects of heat stress on production, somatic cell score and conception rate in Holsteins, Koichi Hagiya; Kiyoshi Hayasaka; Takeshi Yamazaki; Tatsuo Shirai; Takefumi Osawa; Yoshinori Terawaki; Yoshitaka Nagamine; Yutaka Masuda; Mitsuyoshi Suzuki, ANIMAL SCIENCE JOURNAL, 88, (1) 3 - 10, 2017 01 |
| Dimensionality of genomic information and performance of the Algorithm for Proven and Young for different livestock species, Ivan Pocrnic; Daniela A. L. Lourenco; Yutaka Masuda; Ignacy Misztal, GENETICS SELECTION EVOLUTION, 48, (1) , 2016 10 |
| Sexual dimorphism in livestock species selected for economically important traits, E. M. M. van der Heide; D. A. L. Lourenco; C. Y. Chen; W. O. Herring; R. L. Sapp; D. W. Moser; S. Tsuruta; Y. Masuda; B. J. Ducro; I. Misztal, JOURNAL OF ANIMAL SCIENCE, 94, (9) 3684 - 3692, 2016 09 |
| Genetic analysis of the rates of conception using a longitudinal threshold model with random regression in dairy crossbreeding within a tropical environment, Sayan Buaban; Keigo Kuchida; Mitsuyoshi Suzuki; Yutaka Masuda; Wuttigrai Boonkum; Monchai Duangjinda, ANIMAL SCIENCE JOURNAL, 87, (8) 961 - 971, 2016 08 |
| Genetic relationships of fertility traits with test-day milk yield and fat-to-protein ratio in tropical smallholder dairy farms, Sayan Buaban; Monchai Duangjinda; Mitsuyoshi Suzuki; Yutaka Masuda; Jureeratn Sanpote; Keigo Kuchida, ANIMAL SCIENCE JOURNAL, 87, (5) 627 - 637, 2016 05 |
| The Dimensionality of Genomic Information and Its Effect on Genomic Prediction, Ivan Pocrnic; Daniela A. L. Lourenco; Yutaka Masuda; Andres Legarra; Ignacy Misztal, GENETICS, 203, (1) 573 - 581, 2016 05 |
| Implementation of genomic recursions in single-step genomic best linear unbiased predictor for US Holsteins with a large number of genotyped animals, Y. Masuda; I. Misztal; S. Tsuruta; A. Legarra; I. Aguilar; D. A. L. Lourenco; B. O. Fragomeni; T. J. Lawlor, JOURNAL OF DAIRY SCIENCE, 99, (3) 1968 - 1974, 2016 03 |
| Technical note: Acceleration of sparse operations for average-information REML analyses with supernodal methods and sparse-storage refinements, Y. Masuda; I. Aguilar; S. Tsuruta; I. Misztal, JOURNAL OF ANIMAL SCIENCE, 93, (10) 4670 - 4674, 2015 10 |
| Use of genomic recursions and algorithm for proven and young animals for single-step genomic BLUP analyses - a simulation study, B. O. Fragomeni; D. A. L. Lourenco; S. Tsuruta; Y. Masuda; I. Aguilar; I. Misztal, JOURNAL OF ANIMAL BREEDING AND GENETICS, 132, (5) 340 - 345, 2015 10 |
| Short communication: Genetic analysis for fertility traits of heifers and cows from smallholder dairy farms in a tropical environment, S. Buaban; M. Duangjinda; M. Suzuki; Y. Masuda; J. Sanpote; K. Kuchida, JOURNAL OF DAIRY SCIENCE, 98, (7) 4990 - 4998, 2015 07 |
| Hot topic: Use of genomic recursions in single-step genomic best linear unbiased predictor (BLUP) with a large number of genotypes, B. O. Fragomeni; D. A. L. Lourenco; S. Tsuruta; Y. Masuda; I. Aguilar; A. Legarra; T. J. Lawlor; I. Misztal, JOURNAL OF DAIRY SCIENCE, 98, (6) 4090 - 4094, 2015 06 |
| Genetic evaluation using single-step genomic best linear unbiased predictor in American Angus, D. A. L. Lourenco; S. Tsuruta; B. O. Fragomeni; Y. Masuda; I. Aguilar; A. Legarra; J. K. Bertrand; T. S. Amen; L. Wang; D. W. Moser; I. Misztal, JOURNAL OF ANIMAL SCIENCE, 93, (6) 2653 - 2662, 2015 06 |
| Optimal genetic evaluation model for the Somatic Cell Score in Holstein population of Hokkaido, Japan, YAMAGUCHI SATOSHI; MASUDA YUTAKA; NAKAGAWA SATOSHI; GOTO YUSAKU; ABE HAYATO; BABA TOSHIMI; KAWAHARA TAKAYOSHI; SUZUKI MITSUYOSHI, 日本畜産学会報, Zootechnical Science Society of Japan, 86, (2) 153 - 164, 2015 05 |
| Genetic analysis of twinning rate and milk yield using a threshold-linear model in Japanese Holsteins, Yutaka Masuda; Toshimi Baba; Mitsuyoshi Suzuki, ANIMAL SCIENCE JOURNAL, 86, (1) 31 - 36, 2015 01 |
| Application of supernodal sparse factorization and inversion to the estimation of (co) variance components by residual maximum likelihood, Y. Masuda; T. Baba; M. Suzuki, JOURNAL OF ANIMAL BREEDING AND GENETICS, 131, (3) 227 - 236, 2014 06 |
| Reliability of estimated breeding value of conception rate for Holstein female using multiple-trait animal model, HAGIYA Koichi; OSAWA Takefumi; SHIRAI Tatsuo; TERAWAKI Yoshinori; YAMAZAKI Takeshi; NAGAMINE Yoshitaka; ITOH Fumiaki; KAWAHARA Takayoshi; MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho (Japanese), (公社)日本畜産学会, 85, (2) 131 - 138, 2014 05 |
| Genetic correlations between production and disease traits during first lactation in Holstein cows, K. Hagiya; T. Yamazaki; Y. Nagamine; K. Togashi; S. Yamaguchi; Y. Gotoh; T. Kawahara; Y. Masuda; M. Suzuki, ANIMAL, 8, (2) 217 - 223, 2014 02 |
| Estimation of genetic parameters for body weight and ten body measurements at different age stages in Breton and Percheron horses, Y. Masuda; Y. Kubo; D. Yamashita; F. Kashiwamura; M. Suzuki, Nihon Chikusan Gakkaiho (Japanese), 日本畜産学会, 85, (1) 1 - 12, 2014 02 |
| Relationships between conception rate in Holstein heifers and cows and milk yield at various stages of lactation, K. Hagiya; Y. Terawaki; T. Yamazaki; Y. Nagamine; F. Itoh; S. Yamaguchi; H. Abe; Y. Gotoh; T. Kawahara; Y. Masuda; M. Suzuki, ANIMAL, 7, (9) 1423 - 1428, 2013 09 |
| Optimal combination of traits to estimate breeding value of herd life using multiple trait model, HAGIYA Koichi; OSAWA Takefumi; MASUDA Yutaka; SUZUKI MItsuyoshi; YAMAZAKI Takeshi; NAGAMINE YOshitaka; TOGASHI Kenji, Nihon Chikusan Gakkaiho, (公社)日本畜産学会, 83, (2) 117 - 123, 2012 05 |
| Phenotypic and genetic factors of twinning rate in Japanese Holsteins, BABA Toshimi; KANEKO Hitomi; MASUDA Yutaka; SUZUKI MItsuyoshi, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), 日本畜産学会, 83, (2) 125 - 132, 2012 05 |
| Change of genetic correlations among herd life and production/type traits over time of Holsteins in Japan, HAGIYA Koichi; OSAWA Takafumi; MASUDA Yutaka; SUZUKI Mitsuyoshi; YAMAZAKI Takeshi; TOGASHI Kenji, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), (公社)日本畜産学会, 83, (1) 9 - 19, 2012 02 |
| Relationship between genetic abilities of Japanese Black sires predicted from Japanese Black and crossbred population, NAKAHASHI Yoshinobu; MASUDA Yutaka; KUCHIDA Keigo, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), 日本畜産学会, 83, (1) 21 - 28, 2012 02 |
| Estimation of genetic parameters for fatty acid composition in of M. Longissimus thorasis of Japanese Black cattle, NAKAHASHI Yoshinobu; YUSA Tetsuro; MASUDA Yutaka; HIDAKA Satoshi; KUCHIDA Keigo, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), 日本畜産学会, 83, (1) 29 - 34, 2012 02 |
| Comparison of genetic evaluation models for lactation persistency, MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), Japanese Society of Animal Science, 82, (3) 297 - 304, 2011 08 |
| Selecting the desirable method for predicting 305-day lactation yields in Mongolia, Gelegjamts Naranchuluum; Hiroko Ohmiya; Yutaka Masuda; Kouichi Hagiya; Mitsuyoshi Suzuki, ANIMAL SCIENCE JOURNAL, 82, (3) 383 - 389, 2011 03 |
| Genotype×environment interaction in feeding systems and sire countries for Holsteins, BABA Toshimi; SHIMIZU Chika; HASHIMOTO Yuko; MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), Japanese Society of Animal Science, 82, (1) 1 - 7, 2011 02 |
| Relationships Between the First Ovulation Postpartum and Polymorphism in Genes Relating to Function of Immunity, Metabolism and Reproduction in High-producing Dairy Cows, Koumei Shirasuna; Chiho Kawashima; Chiaki Murayama; Yuka Aoki; Yutaka Masuda; Katsuya Kida; Motozumi Matsui; Takashi Shimizu; Akio Miyamoto, JOURNAL OF REPRODUCTION AND DEVELOPMENT, 57, (1) 135 - 142, 2011 02 |
| Predicting 305-day lactation yields from early part-lactation yields in Japanese dairy cattle using multiple-trait prediction procedure, YAMAGUCHI Satoshi; KAWAHARA Takayoshi; GOTOH Yusaku; NAKAGAWA Satoshi; MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho (in Japanese with English Abstract), Japanese Society of Animal Science, 81, (4) 401 - 412, 2010 11 |
| Influences of genetic and environmental factors on cow conception rate of Holsteins in Japan using longitudinal binary data, KAWAHARA Takayoshi; GOTOH Yusaku; MASUDA Yutaka; YAMAGUCHI Satoshi; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho, Japanese Society of Animal Science, 81, (2) 121 - 132, 2010 05 |
| Relationships between reproductive traits of heifers and cows and yield traits for Holsteins in Japan, H. Abe; Y. Masuda; M. Suzuki, JOURNAL OF DAIRY SCIENCE, 92, (8) 4055 - 4062, 2009 08 |
| Genetic relationships of age at first calving, and reproductive traits of cows and yield traits for Holsteins in Hokkaido, ABE Hayato; MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho, 日本畜産学会, 79, (2) 203 - 209, 2008 05 |
| Investigation of genetic and environmental factors for test day milk yields on each stage of lactation for holstein cattle in Hokkaido, MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho, Japanese Society of Animal Science, 79, (1) 9 - 18, 2008 02 |
| Comparison of the Optimum Lactation Curve Models in Holstein Population of Japan, YAMAGUCHI Satoshi; KAWAHARA Takayoshi; GOTOH Yusaku; MASUDA Yutaka; SUZUKI Mitsuyoshi, Nihon Chikusan Gakkaiho, Japanese Society of Animal Science, 78, (4) 415 - 425, 2007 11 |
| Short communication: A positive relationship between the first ovulation postpartum and the increasing ratio of milk yield in the first part of lactation in dairy cows, C. Kawashima; C. Amaya Montoya; Y. Masuda; E. Kaneko; M. Matsui; T. Shimizu; N. Matsunaga; K. Kida; Y. -I. Miyake; M. Suzuki; A. Miyamoto, JOURNAL OF DAIRY SCIENCE, 90, (5) 2279 - 2282, 2007 05 |
Books etc
| 乳牛改良で生産性向上, 寺脇良悟監修, 第3章, デーリィマン社, 2016 10 , 9784864530415 |
| 乳牛管理の基礎と応用 2012年改訂版, 口絵; 古村 圭子; 柏村文郎; 古村圭子; 増子孝義, 第9章第2節, デーリィ・ジャパン社, 2012 04 , 4924506621 |
| 徹底・後継牛づくり, 柏村文郎; 鈴木三義監修, I章 6. 新たな遺伝標識を活用した後継牛づくりの実践と可能性, デーリィマン社, 2010 10 , 9784938445942 |
| 新時代の乳牛改良, 鈴木三義; 寺脇良悟監修, 第4章 乳牛の健康・作業性・成熟度の改良, 酪農学園大学エクステンションセンター, 2009 03 , 9784902786101 |
Conference Activities & Talks
| ホルスタインの異なる 泌乳ステージにおける乳中FAと泌乳形質との遺伝相関, 山本 直樹; 増田 豊, 北海道畜産草地学会 第13回学会大会 |
| ホルスタインの乳中脂肪酸組成に関する変量回帰係数の最適な次数の検討, 増田 豊, 日本畜産学会第132回大会 |
| 乳用牛の乳中脂肪酸組成における遺伝と飼養環境の交互作用の推定, 山本 直樹; 増田 豊, 日本畜産学会第132回大会 |
| Genotype by management-system interaction on origin group of milk fatty acids for Holsteins, Y. Masuda; N. Yamamoto; D. A. L. Lourenco; S. Tsuruta; I. Misztal, The 75th EAAP Annual Meeting |
| Genome-wide association study on origin groups of milk fatty acids at early stages in the first lactation for Holsteins, Yutaka Masuda, American Dairy Science Association (ADSA) Annual Meeting 2024 |
| ホルスタインの泌乳前期における乳中脂肪酸組成と泌乳形質との遺伝相関, 山本 直樹; 増田 豊, 北海道畜産草地学会 第12回学会大会 |
| 乳用牛群におけるゲノミックヤングサイアの利用に関するリスク評価, 増田 豊, 北海道畜産草地学会 第12回学会大会 |
| 北海道のホルスタイン集団における乳中脂肪酸組成の泌乳曲線, 山本 直樹; 増田 豊, 日本畜産学会第131回大会 |
| 北海道のホルスタインにおける 乳中脂肪酸組成に関する3産次 までの遺伝的パラメータの推定, 増田 豊, 日本畜産学会第131回大会 |
| Genetic parameters for the composition of milk fatty acid of Holsteins, Yutaka Masuda, The 74th EAAP Annual Meeting |
| Environmental factors and genetic parameters for milk fatty acids in Japanese Holstein cattle, Yutaka Masuda, American Dairy Science Association 2023 Annual Meeting |
| SNP情報のゲノミック評価以外の活用法, 増田 豊, 令和4年度ゲノミック評価手法普及・啓発セミナー 第2部, 畜産技術協会 |
| ゲノミック評価に関する世界情勢と研究動向, 増田 豊, 令和4年度ゲノミック評価手法普及・啓発セミナー 第1部, 畜産技術協会 |
| ヤングサイアを活用した我が国の乳用牛改良の加速化, 増田 豊, JAAB勉強会 |
| Challenges, opportunities and direction for dairy-cattle genetic improvement in Thailand, Yutaka Masuda, The role and importance of dairy genetic improvement in the development of Thai dairy-cattle industry under Thailand-FAO CPF. |
| 乳用牛の初産記録に基づく選抜が泌乳成熟曲線の遺伝的トレンドに及ぼす影響, 増田 豊, 日本畜産学会第130回大会 |
| An iterative method for de-regressed proof in single-step genomic BLUP and its application to a dairy cattle population, Yutaka Masuda, The 12th World Congress on Genetics Applied to Livestock Production (WCGALP) |
| 家畜におけるゲノミック選抜の現状と展望, 増田 豊, 酪農学園大学・雪印種苗株式会社 共催酪農セミナー |
| 北米の肉用牛と乳用牛の育種改良の現状, 増田 豊, 十勝AI協会研修会 |
| 畜産における ゲノム育種の現状と課題, 増田 豊, 日本動物遺伝育種学会 第22回大会 シンポジウム |
| アメリカ(北米)における育種改良の実状, 増田 豊, 令和3(2021)年度 石狩家畜人工授精師協会研修会 |
| 乳用牛における泌乳量の成熟度の遺伝的トレンド, 増田 豊, 日本畜産学会第129回大会 |
| 家畜とくに乳用牛の遺伝・育種におけるSDGsに向けた取り組み, 増田 豊, 北海道畜産草地学会 第10回大会シンポジウム |
| Unknown-parent group and metafounder models for missing pedigree in ssGBLUP, Yutaka Masuda, The 72nd EAAP Annual Meeting |
| Preliminary results on de-regressed proof in single-step GBLUP, Yutaka Masuda, ICAR/Interbull Virtual Conference 2021 |
| Genomic prediction with single-step genomic BLUP using a subset of genotypes in US Holstein, Yutaka Masuda, The 71st EAAP Annual Meeting |
| Genomic prediction with single-step genomic BLUP using a subset of genotypes in US Holstein, Yutaka Masuda, American Dairy Science Association (ADSA) Virtual Annual Meeting |
| Genomic prediction with missing pedigrees in single-step GBLUP in a large-scale genotyped population, MASUDA, Yutaka, The 126th Annual Meeting of Japanese Socioty of Animal Science |
| Genomic prediction with missing pedigrees in single-step GBLUP for production traits in US Holstein, MASUDA, Yutaka, The 70th EAAP Annual Meeting |
| Efficient quality control methods for genomic and pedigree data used in routine genomic evaluation, MASUDA, Yutaka, ASAS-CSAS Annual Meeting and Trade Show |
| Genomic prediction with unknown-parent groups and metafounders for production traits in US Holsteins, MASUDA, Yutaka, American Dairy Science Association (ADSA) Annual Meeting |
| Single-step GBLUP including more than 2 million genotypes with missing pedigrees for production traits in US Holstein, MASUDA, Yutaka, 2019 Interbull Annual Meeting |
| Alternative covariance structures including unknown-parent groups and metafounders in single-step genomic BLUP, MASUDA, Yutaka, Gordon Research Conference Quantitative Genetics and Genomics |
| Genomic predictability of single-step GBLUP for production traits in US Holstein, MASUDA, Yutaka, The 69th EAAP Annual Meeting |
| Genomic predictability of single-step GBLUP for production traits in US Holstein., MASUDA, Yutaka, ADSA 2018 Annual Meeting |
| Pre-selection bias and validation method in single-step GBLUP for production traits in US Holstein, MASUDA, Yutaka, 11th World Congress on Genetics Applied to Livestock Production (WCGALP) |
| Including causative variants into single step genomic BLUP., B. D. Fragomeni; D. A. L. Lourenco; Y. Masuda; A. Legarra; I. Misztal, JOURNAL OF ANIMAL SCIENCE, AMER SOC ANIMAL SCIENCE |
| Genetic trends from single-step GBLUP and traditional BLUP for production traits in US Holstein, MASUDA, Yutaka, ADSA 2017 Annual Meeting |
| Selected inversion in quantitative genetics. In MS78: Selected inversion and its application, MASUDA, Yutaka, SIAM Conference on Computational Science & Engineering (CSE17) |
| Tests of single-step GBLUP for production traits in US Holsteins, MASUDA, Yutaka, Interbull Technical Workshop 2017 |
| Single-step GBLUP using APY inverse for protein yield in US Holstein with a large number of genotyped animals, MASUDA, Yutaka, The 67th EAAP Annual Meeting |
| Single-step GBLUP using APY inverse for protein yield in US Holstein with a large number of genotyped animals, MASUDA, Yutaka, ASAS & ADSA Joint Annual Meeting (JAM) 2016, Salt Lake City, UT (USA), July 19-23, 2016 |
| Genomic predictions with approximated G-inverse for a large genotyped population, MASUDA, Yutaka, The 66th EAAP Annual Meeting, Warsaw (Poland), August 31 to September 4, 2015 |
| Genomic predictions with APY G-inverse for a large number of genotyped animals, MASUDA Yutaka, ASAS & ADSA Joint Annual Meeting (JAM) 2015, Orlando, FL (USA), July 12-16, 2015 |
| Single-step evaluation in the US Holstein population with 570k genotyped animals, MASUDA Yutaka, Interbull Annual Meeting 2015, Orlando, FL (USA), July 9-11, 2015 |
| Acceleration of computations in AI REML for single-step GBLUP models, MASUDA Yutaka, 10th World Congress on Genetics Applied to Livestock Production, Vancouver (Canada), August 17-22, 2014 |
| Advantage of supernodal methods in REMLwhen dense matrices are involved in a coefficient matrix of mixed model equations, MASUDA Yutaka, ASAS & ADSA Joint Annual Meeting (JAM) 2014, Kansas City, MO (USA), July 20-24, 2014 |
| ホルスタイン種の多産次変量回帰検定日モデルによる泌乳形質および泌乳持続性の遺伝的パラメータの推定, 大澤剛史; 萩谷功一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 |
| 泌乳形質および受胎率に関する異なる暑熱環境間の遺伝相関, 萩谷功一; 早坂貴代史; 山崎武志; 白井達夫; 大澤剛史; 寺脇良悟; 長嶺慶隆; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 |
| Efficient inversion of a large genomic relationship matrix stored on a disk using a CPU & GPUs, MASUDA Yutaka, ASAS & ADSA Joint Annual Meeting (JAM) 2013, Indianapolis, IN (USA), July 8-12, 2013 |
| ホルスタイン種の受胎率に関する推定育種価の信頼性, 萩谷功一; 大澤剛史; 白井達夫; 寺脇良悟; 山崎武志; 長嶺慶隆; 伊藤文彰; 河原孝吉; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 |
| 乳用牛の牛群曲線を考慮した多産次変量回帰検定日モデルの検討, 大澤剛史; 萩谷功一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 |
| Sparse structures for mixed model equations (MME) for different animal models., MASUDA Yutaka, The 63rd EAAP Annual Meeting, Bratislava (Slovakia), August 27-31, 2012 |
| 多形質モデルによる在群性の育種価推定のために最適な形質の組み合わせ, 萩谷功一; 大澤剛史; 増田豊; 鈴木三義; 山崎武志; 長嶺慶隆; 富樫研治, 日本畜産学会大会講演要旨, 公益社団法人 日本畜産学会, Optimal combination of traits was investigated to estimate the breeding value (BV) of herd life using multiple trait model. Data were first lactation records of milk, somatic cell score (SCS) and 9 type traits (feet and legs, chest width, angularity, rump angle, foot angle, rear udder height, udder support, udder depth, front teat placement) from 75,091 cows born between 2001 and 2002 with their pedigree records. Herd life was defined as censored records from birth to 84 months at age of cow. Various fixed effects were considered for herd life (herd-year, calving age), milk and SCS (herd-year, calving month, calving age) and type traits (herd-classifier-classified day, age at classification, lactation stage) in the statistical models. When 9 traits model was used, the highest reliability of the estimated BV for herd-life was obtained from a combination of herd life, milk, SCS, feet and legs, chest width, angularity, udder support, udder depth and front teat placement. |
| 乳用牛におけるゲノミック選抜の 応用と課題, 増田 豊, 第49回家畜育種研究会談話会 |
| 制限付き最尤法による分散成分の推定における現代的な疎行列技法の応用, 増田 豊, 日本畜産学会第115回大会 |
| Genetic relationships among metabolic profile components, body condition score, persistency of lactation and milk yield in holstein cattle, MASUDA, Yutaka, 9th World Congress on Genetics Applied to Livestock Production, Leipzig (Germany), August 1-6, 2010 |
| 乳用牛の加齢による乳量の分散の変動を説明するモデルに関する検討, 萩谷功一; 大澤剛史; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 |
| 泌乳持続性と分娩間隔との遺伝的関連性, 萩谷功一; 富樫研治; 武田尚人; 山崎武志; 白井達夫; 佐分淳一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 |
| Estimation of genetic and phenotypic parameters for days open and test day milk yields in Japanese Holsteins, Y. Masuda; H. Abe; M. Suzuki, JOURNAL OF DAIRY SCIENCE, AMER DAIRY SCIENCE ASSOC |
| Phenotypic and genetic analysis of days open for Japanese Holstein cows, H. Abe; M. Suzuki; Y. Masuda, JOURNAL OF DAIRY SCIENCE, AMER DAIRY SCIENCE ASSOC |
| Estimation of genetic and phenotypic parameters for days open and test day milk yields in Japanese Holsteins, Y. Masuda; H. Abe; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, AMER SOC ANIMAL SCIENCE |
| Phenotypic and genetic analysis of days open for Japanese Holstein cows, H. Abe; M. Suzuki; Y. Masuda, JOURNAL OF ANIMAL SCIENCE, AMER SOC ANIMAL SCIENCE |
| ホルスタイン種における泌乳持続性に関する遺伝的パラメータの推定, 萩谷功一; 富樫研治; 武田尚人; 山崎武志; 白井達夫; 佐分淳一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨 |
| The first ovulation of dominant follicle within three weeks postpartum closely relates to metabolic status and peak milk yield in high-producing dairy cows., A. Miyamoto; M. Kataoka; Y. Masuda; C. Kawashima; E. Kaneko; N. Matsunaga; M. Matsui; M. Ishii; K. Kida; Y. -I. Miyake; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, AMER SOC ANIMAL SCIENCE |
| Estimation of genetic parameters for maturity of lactation in Japanese Holsteins., Y. Masuda; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, AMER SOC ANIMAL SCIENCE |
Misc
| 乳房炎にかかわる遺伝子, 増田 豊, 臨床獣医 臨時増刊号 トピックで学ぶ牛の乳房炎, 43, 2025 06 |
| 牛におけるゲノミック選抜法の積極的な活用 第4回 ゲノミック選抜の活用戦略, 増田 豊, 繁殖技術, 43, (2) 41 - 44, 2023 03 |
| 牛におけるゲノミック選抜法の積極的な活用 第3回 ゲノミック育種価の信頼度と最適な種雄牛選択, 増田 豊, 繁殖技術, 42, (5) 123 - 129, 2022 09 |
| 牛におけるゲノミック評価における抗病性, 増田 豊, 臨床獣医, 40, (8) 30 - 34, 2022 07 |
| Investigating genetic redundancy as a source of genetic diversity and adaptability in the U.S. Holstein breed, Steyn, Y; Lawlor, T.J; Tsuruta, S; Masuda, Y; Legarra, A; Lourenco, D.A.L; Misztal, I, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 2022 07 |
| Population structure of U.S. Holsteins allows for a snapshot of allele frequency changes and family specific SNPs, Lawlor, T.J; Steyn, Y; Tsuruta, S; Masuda, Y; Lourenco, D.A.L; Misztal, I, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 2022 07 |
| How ssGBLUP became suitable for national dairy cattle evaluations, Misztal, I; Lourenco, D; Tsuruta, S; Aguilar, I; Masuda, Y; Bermann, M; Cesarani, A; Legarra, A, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 2022 07 |
| Recent updates in the BLUPF90 software suite, Lourenco, D; Tsuruta, S; Aguilar, I; Masuda, Y; Bermann, M; Legarra, A; Misztal, I, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 36_012, 2022 07 |
| A deregression method for a single-step SNP BLUP model using all genotype data, Z Liu; Y Masuda, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 2022 07 |
| An alternative method to consider a reference population in Single-Step SNP BLUP model without separating genomic terms, Osawa, T; Baba, T; Masuda, Y; Kawahara, T; Goto, Y, Proceedings of the 12th World Congress of Genetics Applied to Livestock Production, 2022 07 |
| 牛におけるゲノミック選抜法の積極的な活用 第2回 DNA情報を用いる選抜法, 増田 豊, 繁殖技術, 42, (3) 89 - 94, 2022 07 |
| Genomic prediction of milk-production traits in Thai dairy cattle, Pattarapol Sumreddee; Sayan Buaban; Somsak Prempree; Kiettisak Lengnudum; Jatuporn Pongpeng; Korbsook Thongsodsaeng; Monchai Duangjinda; Praopilas Phakdeedindan; Yutaka Masuda, 2022 Current trends of livestock research in Taiwan and Southeast Asian Countries Organized by Department of Animal Science, National Chung Hsing University, Taiwan June 29 – July 1, 2022 (online), 2022 06 |
| 牛におけるゲノミック選抜法の積極的な活用 第1回 従来選抜法の問題とゲノミック選抜法への期待, 増田 豊, 繁殖技術, 42, (3) 53 - 58, 2022 05 |
| 牛群サイズまたは繁殖成績が上位の乳用牛群記録に基づく推定育種価の精度の検証, 山崎武志; 大澤剛史; 増田豊, 日本畜産学会大会講演要旨, 130th, 2022 |
| A deregression method for single-step genomic model using all genotype data, Zengting Liu; Yutaka Masuda, Interbull Bulletin, 56, 2021 09 |
| Deregression formula for single-step genomic BLUP, Yutaka Masuda; Zengting Liu; Peter Sullivan, Interbull Bulletin, 56, 2021 09 , https://journal.interbull.org/index.php/ib/article/view/71 |
| Studies on inflation of GEBV in single-step GBLUP for type, I. Misztal; H. L. Bradford; D. A. L. Lourenco; S. Tsuruta; Y. Masuda; A. Legarra; T. J. Lawlor, Interbull Bulletin, 51, 2017 09 |
| Including causative variants into single step genomic BLUP., B. D. Fragomeni; D. A. L. Lourenco; Y. Masuda; A. Legarra; I. Misztal, JOURNAL OF ANIMAL SCIENCE, 95, 2017 08 , 10.2527/asasann.2017.193 |
| Direct and indirect genomic evaluations in beef cattle, D. A. L. Lourenco; I. Misztal; S. Tsuruta; B. O. Fragomeni; I. Aguilar; Y. Masuda; D. Moser, Interbull Bulletin, 49, 2015 08 |
| Single-step genomic evaluations with 570K genotyped animals in US Holsteins, Y. Masuda; I. Misztal; S. Tsuruta; D. A. L. Lourenco; B. O. Fragomeni; A. Legarra; I. Aguilar; T. J. Lawlor, Interbull Bulletin, 49, 2015 08 |
| Efficient inversion of genomic relationship matrix by the algorithm for proven and young (APY), I. Misztal; B. O. Fragomeni; D. A. L. Lourenco; S. Tsuruta; Y. Masuda; I. Aguilar; A. Legarra; T. Lawlor, Interbull Bulletin, 49, 2015 08 |
| ホルスタイン種の多産次変量回帰検定日モデルによる泌乳形質および泌乳持続性の遺伝的パラメータの推定, 大澤剛史; 萩谷功一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 118th, 2014 03 27 |
| 泌乳形質および受胎率に関する異なる暑熱環境間の遺伝相関, 萩谷功一; 早坂貴代史; 山崎武志; 白井達夫; 大澤剛史; 寺脇良悟; 長嶺慶隆; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 117th, 2013 09 09 |
| 各泌乳ステージにおける乳量と受胎率間の遺伝的関係, 萩谷功一; 寺脇良悟; 山崎武志; 長嶺慶隆; 伊藤文彰; 山口諭; 阿部隼人; 後藤裕作; 河原孝吉; 増田豊; 鈴木三義, 北海道畜産草地学会報, 1, 2013 03 29 |
| 乳用牛の牛群曲線を考慮した多産次変量回帰検定日モデルの検討, 大澤剛史; 萩谷功一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 116th, 2013 03 28 |
| ホルスタイン種の受胎率に関する推定育種価の信頼性, 萩谷功一; 大澤剛史; 白井達夫; 寺脇良悟; 山崎武志; 長嶺慶隆; 伊藤文彰; 河原孝吉; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 116th, 2013 03 28 |
| 多形質モデルによる在群性の育種価推定のために最適な形質の組み合わせ, 萩谷功一; 大澤剛史; 増田豊; 鈴木三義; 山崎武志; 長嶺慶隆; 富樫研治, 日本畜産学会大会講演要旨, 115th, (2) 159 - 123, 2012 03 28 , Optimal combination of traits was investigated to estimate the breeding value (BV) of herd life using multiple trait model. Data were first lactation records of milk, somatic cell score (SCS) and 9 type traits (feet and legs, chest width, angularity, rump angle, foot angle, rear udder height, udder support, udder depth, front teat placement) from 75,091 cows born between 2001 and 2002 with their pedigree records. Herd life was defined as censored records from birth to 84 months at age of cow. Various fixed effects were considered for herd life (herd-year, calving age), milk and SCS (herd-year, calving month, calving age) and type traits (herd-classifier-classified day, age at classification, lactation stage) in the statistical models. When 9 traits model was used, the highest reliability of the estimated BV for herd-life was obtained from a combination of herd life, milk, SCS, feet and legs, chest width, angularity, udder support, udder depth and front teat placement. |
| 酪農現場での種雄牛の選定における問題点の解明, 橋本 優子; 馬場 俊見; 増田 豊; 鈴木 三義, 繁殖技術, 30, (2) 23 - 26, 2010 09 |
| ゲノム解析と乳牛改良 ゲノミック評価について, 増田 豊, 家畜人工授精, (259) 1 - 6, 2010 07 |
| 乳用牛の加齢による乳量の分散の変動を説明するモデルに関する検討, 萩谷功一; 大澤剛史; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 111th, 2009 09 28 |
| 泌乳持続性と分娩間隔との遺伝的関連性, 萩谷功一; 富樫研治; 武田尚人; 山崎武志; 白井達夫; 佐分淳一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 107th, 2007 03 27 |
| Phenotypic and genetic analysis of days open for Japanese Holstein cows, H. Abe; M. Suzuki; Y. Masuda, JOURNAL OF ANIMAL SCIENCE, 85, 2007 |
| Estimation of genetic and phenotypic parameters for days open and test day milk yields in Japanese Holsteins, Y. Masuda; H. Abe; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, 85, 2007 |
| Phenotypic and genetic analysis of days open for Japanese Holstein cows, H. Abe; M. Suzuki; Y. Masuda, JOURNAL OF DAIRY SCIENCE, 90, 2007 |
| Estimation of genetic and phenotypic parameters for days open and test day milk yields in Japanese Holsteins, Y. Masuda; H. Abe; M. Suzuki, JOURNAL OF DAIRY SCIENCE, 90, 2007 |
| ホルスタイン種における泌乳持続性に関する遺伝的パラメータの推定, 萩谷功一; 富樫研治; 武田尚人; 山崎武志; 白井達夫; 佐分淳一; 増田豊; 鈴木三義, 日本畜産学会大会講演要旨, 106th, 2006 03 20 |
| Estimation of genetic parameters for maturity of lactation in Japanese Holsteins., Y. Masuda; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, 84, 2006 |
| The first ovulation of dominant follicle within three weeks postpartum closely relates to metabolic status and peak milk yield in high-producing dairy cows., A. Miyamoto; M. Kataoka; Y. Masuda; C. Kawashima; E. Kaneko; N. Matsunaga; M. Matsui; M. Ishii; K. Kida; Y. -I. Miyake; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, 84, 2006 |
| Estimation of genetic parameters and breeding values for persistency of lactation in Japanese Holsteins, Y. Masuda; M. Suzuki, JOURNAL OF DAIRY SCIENCE, 88, 2005 |
| Estimation of genetic parameters and breeding values for persistency of lactation in Japanese Holsteins, Y. Masuda; M. Suzuki, JOURNAL OF ANIMAL SCIENCE, 83, 2005 |
Awards & Honors
| 2021 04 , Japanese Society of Animal Science, Excellent Paper Award (Animal Science Journal), Effects of heat stress on production, somatic cell score and conception rate in Holsteins |
Research Grants & Projects
| 日本学術振興会, 科学研究費助成事業 基盤研究(C), 乳中脂肪酸組成におけるゲノムと飼養環境との相互作用の解明とゲノミック選抜への応用, 20220401, 20250331, 増田 豊 |
| 全国競馬・畜産振興会, 全国競馬・畜産振興会畜産振興事業, 乳用牛の泌乳前期健全性改善指標開発事業, 202205, 202503 |
| 日本学術振興会, 科学研究費助成事業 研究活動スタート支援, 仮親を伴うシングル・ステップ法における育種価予測値のバイアス発生メカニズムの解明, 202108, 202503, 増田 豊, シングルステップ法は、観測データ、血縁関係、ゲノム情報を結びつけることで個々の育種価を予測し、特に情報量の少ない若齢個体の選抜の正確度を向上させるゲノミック選抜手法である。血縁情報はしばしば欠損するため、血統表の不明親に「仮親」を割り当て、育種価予測値の偏りを軽減するモデルが提案されている。本研究の目的は、血縁関係に欠損がある場合に、情報量の欠落に応じて育種価予測値がどのように偏るかを調査し、偏りの少ない最適な仮親モデルを提案することを目指す。 初年度である本年度は、シミュレーションにより、血縁にさまざまな欠損パターンをもつ疑似データを生成した。本研究の目的に沿ったデータを生成するため、既存のシミュレーションプログラムを修正した。そのシミュレーションは、乳用牛の繁殖構造を模したものであった。1頭の種雄牛が多数の後代牛を持ち、その後代牛（雌牛）が複数の群にまたがって飼養されていた。生成された直後のデータには血統情報の欠落がなかったが、事後的に母方の血縁情報を欠損させた。欠損のパターンとして、ランダムに血縁が欠損する状況、特定の種雄牛の後代に欠損が集中する状況、遺伝的能力の低い後代に欠損が集中する状況を想定した。ゲノム情報を用いないアニマルモデルBLUP法による遺伝能力評価を行うと、仮親を用いない場合には、いずれの欠損パターンにおいても遺伝的トレンドの過小推定がみられたが、その程度は欠損の程度に依存した。仮親を含めると、遺伝的トレンドは真値に近づいたが、仮親のもつ個体数が十分ではない場合にはバイアスを除去できなかった。 |
| 乗用馬ならびに農用馬の遺伝的改良に関する研究, 201004 |
| 乳牛におけるゲノミック選抜（genomic selection）の応用, 2009, 密なSNPマーカーを用いて乳用牛の遺伝能力評価を行う際の，最適な育種計画，手法および検証方法について検討する。 |
| 家畜の量的形質に対する変量回帰（random regression）分析の応用, 2008 |
| genetic improvement of life time production performance for dairy cattle, 2005, 2007 |
| 乳用牛の生涯生産能力に関する遺伝的改善, 2005 |
社会貢献活動情報
Social Contribution
| 2024 01 18 , 乳牛の改良と牛群検定, 令和5年度 酪農ヘルパー初級者養成研修カリキュラム# |
| 2023 01 19 , 乳牛の改良と牛群検定, 令和4年度 酪農ヘルパー中級者養成研修カリキュラム# |
教員総覧