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用基因组数据提高罗莱犬的繁殖群的繁殖价值可靠性

Michaela Brzáková¹, Zdeňka Veselá¹, Jan Vařeka¹

¹Department of Genetics and Breeding of Farm Animals, Institute of Animal Science, 104 00 Prague, Czech Republic.

|December 23, 2023

概括

纳入基因组数据显著提高了查罗莱牛的育种价值的可靠性,特别是对于年轻动物和经过验证的母牛. 这种基因组选择提高了诸如分娩容易度和寿命等特征的准确性.

科学领域:

动物遗传学动物遗传学
量化遗传学量化遗传学
畜牧养殖畜牧养殖畜牧养殖

背景情况:

准确的繁殖值对于牛的遗传改进至关重要.
像BLUP这样的传统方法在早期遗传评估中存在局限性.
基因组选择提供了一种有希望的方法来提高预测准确性.

研究的目的:

评估单步基因组最佳线性无偏预测 (ssGBLUP) 对育种价值可靠性的影响.
为了比较ssGBLUP与传统的最佳线性公正预测 (BLUP) 在夏洛莱牛.
为了评估可靠性增长的年龄在第一次分娩,分娩间隔,和生产寿命.

主要方法:

使用ssGBLUP和BLUP方法进行遗传评估.
分析了来自48,590名纯种查罗莱斯人的数据.
根据基因型和绩效记录将个人分为子组.

主要成果:

基因组数据的整合显著提高了基因组估计育种价值 (GEBV) 对基因型个体的可靠性.
年轻的基因型动物的可靠性增加了27%,牛的可靠性增加了22%,公牛的可靠性增加了21%.
可靠性增长在早期哺乳期是最明显的,进口牛的可靠性较低,除非与国内母牛繁殖.

结论:

ssGBLUP显著提高了查罗莱斯牛的繁殖价值预测准确度.
基因组选择对年轻动物和经过验证的雌雄特别有益.
基因组数据的战略性使用,包括管理进口遗传学,是最大化遗传收益的关键.

关键词:

查罗莱斯 (Charolais) 是一个葡萄酒.动物育种动物育种基因组选择基因组选择可靠性的可靠性

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