Prediction of random-regression coefficient for daily milk yield after 305 days in milk by using the regression-coefficient estimates from the first 305 days

Autor: Takeshi Yamazaki, Hisato Takeda, Koichi Hagiya, Satoshi Yamaguchi, Osamu Sasaki

Publikováno v: Asian-Australasian Journal of Animal Sciences, Vol 31, Iss 10, Pp 1542-1549 (2018)

Objective Because lactation periods in dairy cows lengthen with increasing total milk production, it is important to predict individual productivities after 305 days in milk (DIM) to determine the optimal lactation period. We therefore examined wheth

Externí odkaz: https://doaj.org/article/212c1aacc1c04c6ba07686b58e3f7e87

Simulation of the lifetime productivity of a dairy herd in Japan according to the number of days to first service of cows.

Autor: Takeshi Yamazaki¹ (AUTHOR) yamazakt@affrc.go.jp, Hisato Takeda² (AUTHOR), Osamu Sasaki² (AUTHOR)

Publikováno v: Animal Science Journal. Jan-Dec2022, Vol. 93 Issue 1, p1-7. 7p.

Prediction of energy balance from milk traits of Holsteins in Japan

Autor: Akiko Nishiura, Osamu Sasaki, Tamako Tanigawa, Asuka Kubota, Hisato Takeda, Yuriko Saito

Publikováno v: Animal science journal = Nihon chikusan GakkaihoREFERENCES. 93(1)

We predicted the energy balance (EB) of Holstein cows in Japan from milk traits obtained by herd testing. Records covered 156 lactations of 102 cows. The number of artificial inseminations was highest, and the first conception rate was lowest in the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6bc315337e85ab76338e3e9f66a6f4f
https://pubmed.ncbi.nlm.nih.gov/35781727

Genetic correlations among fertility traits and lactation persistency within and across Holstein herds with different milk production during the first three lactations

Autor: Takefumi Osawa, Satoshi Yamaguchi, Takeshi Yamazaki, Hisato Takeda, Koichi Hagiya

Publikováno v: SC30201903060010
NARO成果DBa

application/pdf
Genotype by environment interaction (G × E) effects for lactating cows’ fertility traits may differ with lactation number when accounting for herd production level. Our objective here was to investigate the genetic correlation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ba8f10469e1d28e4fb12c08b2ef76b2
https://doi.org/10.1016/j.livsci.2018.12.001

Genetic correlations between the cumulative pseudo-survival rate, milk yield, and somatic cell score during lactation in Holstein cattle in Japan using a random regression model

Autor: M. Aihara, A. Nishiura, Osamu Sasaki, Hisato Takeda

Publikováno v: SC30201804130027
NARO成果DBa
Green open Access
This journal has an embargo period of 12 months.
この論文は出版社版ではありません。引用の際には出版社版をご利用ください。
This is not the published version. Please cite only the published version.

Trends in genetic correlations between longevity, milk yield, and somatic cell score (SCS) during lactation in cows are difficult to trace. In this study, changes in the genetic correlations between milk yield, SCS, and cumulative pseudo-survival rat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aedf9c78710c9439fb24751599edb73d
http://id.nii.ac.jp/1578/00002429/