Genetic relationship between superovulatory response traits and carcass traits in Japanese Black cattle

Atsushi Zoda, Rino Kagawa, Rui Obinata, Manami Urakawa, Yoshio Oono, Shinichiro Ogawa, Yoshinobu Uemoto, Masahiro Satoh

    研究成果: Article査読

    抄録

    We estimated the genetic correlations between superovulatory response traits and carcass traits in Japanese Black cattle. As regards the superovulatory response traits in cows, we analyzed the phenotypic records of the total number of embryos and oocytes (TNE) and the number of good embryos (NGE) collected from 1532 donors between 2008 and 2018. As regards the carcass traits in fattened animals, we analyzed the phenotypic records for cold carcass weight, rib eye area, rib thickness, subcutaneous fat thickness, estimated yield percent, and marbling score for 1448 progenies derived from 596 donors and slaughtered between 2004 and 2020. Variance components were estimated using single-trait and two-trait animal models and the restricted maximum likelihood approach. The estimated genetic correlations with the carcass traits ranged from -0.05 to 0.04 for TNE and from -0.14 to 0.04 for NGE, and their standard errors ranged from 0.10 to 0.14. These results imply that the genetic relationship between the superovulatory response traits in Japanese Black donor cows and the carcass traits in their fattened progenies was weak to negligible. Therefore, we concluded that selecting donors with superior genetic ability for superovulatory responses would not have antagonistic effects on carcass performance in their fattened progenies.

    本文言語English
    ページ(範囲)e13731
    ジャーナルAnimal science journal = Nihon chikusan Gakkaiho
    93
    1
    DOI
    出版ステータスPublished - 2022 1月 1

    ASJC Scopus subject areas

    • 農業および生物科学(全般)

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