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在商业纯种子中优化尸体特征的基因组选择策略

Wentao Cai¹, Linxi Zhu², Chengming Han²

¹Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.

Poultry science

|June 21, 2025

概括

基因组选择 (GS) 通过提高体特征预测准确度来改善子的繁殖. 在GS策略中结合父母和兄弟的数据,为增加肉类产量和质量提供了最可靠的育种方法.

科学领域:

动物科学动物科学
遗传学遗传学是一个
养殖家禽养殖家禽的养殖方法

背景情况:

对于肉产业来说,尸体的特征至关重要,但传统的育种方法与活体动物的测量斗争.
基因组选择 (GS) 为动物育种提供了一种具有成本效益和效率的替代方案.
有限的研究存在于家禽尸体特征的GS策略,特别是在商业子中.

研究的目的:

在一个商业品种中分析39只子尸体特征的遗传参数.
将基因组最佳线性无偏预测 (GBLUP) 与传统方法的预测性能进行比较.
开发和评估新的GS策略,以改善子尸体的特征.

主要方法:

对1649只子39个尸体特征的表型和遗传参数分析.
血统最好的线性无偏预测 (BLUP) 和GBLUP用于预测分析的应用.
三个GS策略的交叉验证和设计,使用父母,兄弟姐妹和兄弟姐妹信息.

主要成果:

遗传性估计范围从中等到高的关键特征,如子和尸体重量.
GBLUP显著优于传统的BLUP,在39个特征中33个特征的预测可靠性得到改善.
结合父母兄弟姐妹和兄弟姐妹信息的GS策略显示出最高的预测可靠性.

结论:

这项研究为家禽尸体的特征建立了有效的GS策略,提高了预测准确度.
与传统的BLUP相比,GBLUP是预测子尸体特征的优越方法.
建议扩大参考种群并将其用于未来的预测,以改善子繁殖结果.

关键词:

遗传相关性遗传相关性基因组预测基因组预测遗传性遗传性是可以继承的.代际预测的预测.在世代内进行预测.

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