乳牛的功能寿命的综合单步评估,包括相关的特征
Laure-Hélène Maugan1, Roberta Rostellato2, Thierry Tribout3
1Université Paris-Saclay, INRAE, AgroParisTech, GABI, 78350, Jouy-en-Josas, France. laure-helene.maugan@eliance.fr.
Genetics, selection, evolution : GSE
|October 25, 2023
概括
一个新的综合单步 (CSS) 评估通过结合相关特征的数据来改善功能长寿的基因组育种值. 这种方法可以准确预测牛群的寿命,有利于基因型和非基因型动物.
科学领域:
- 动物遗传学 动物遗传学
- 定量遗传学 是一种定量遗传学.
- 乳牛养殖 乳牛养殖 乳牛养殖
背景情况:
- 多种特征遗传评估通过使用相关的特征提高了育种价值的准确性.
- 法国此前曾在不同模型的特征中使用联合单变量BLUP,特别是受益于功能长寿 (FL).
- 目前的单步 (SS) 评估仅限于单变量FL评估.
研究的目的:
- 实施功能长寿 (FL) 的综合单步 (CSS) 评估.
- 通过整合五种相关性特征的数据来增强FL的基因组估计育种值 (GEBV).
- 为了延长这个世界.
主要方法:
- 从单变SS (USS) 和CSS评估中比较了基因组估计的繁殖值 (GEBV).
- 评估了来自相关特征的间接信息对FL GEBV的影响.
- 分析了基于GEBV的生存曲线从2016年数据的分值,使用2021年的群体生活观测.
主要成果:
- CSS的评估表明,包括FL相关特征的间接信息有很大的好处.
- 根据2016年GEBV,CSS的评估准确地确定了群体寿命较短或较长的母牛.
- 观察到对未来生存的预测得到了改进,特别是在基因型的公牛身上,这表明准确度提高了.
结论:
- 综合单步 (CSS) 评估通过整合相关特征信息,有效改善功能长寿 (FL).
- CSS有助于精确组合影响杀决策的功能特征.
- 功能特征的综合评估对年轻公牛的好处较小,因为强烈的选择.
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