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在Nelore,Gir和Red Sindhi牛品种中检测到选择签名

Maria Victória Henrique Genuíno¹, Ayrton Fernandes de Oliveira Bessa¹, Roney Teixeira da Silva²

¹Universidade Federal da Paraíba (UFPB), Areia, PB, 58397-000, Brazil.

Mammalian genome : official journal of the International Mammalian Genome Society

|April 2, 2025

概括

选择签名揭示了内罗尔,吉尔和红辛迪牛的遗传适应. 这些发现突出了繁殖计划如何塑造牛基因组的特征,如耐热性和生产力,帮助未来的繁殖策略.

科学领域:

基因组学和生物信息学
动物遗传学动物遗传学
人口遗传学人口遗传学

背景情况:

基因组学和生物信息学的进步使得研究牛品种遗传结构和选择引起的变化成为可能.
了解遗传多样性和选择特征 (SS) 对畜牧养殖计划至关重要.

研究的目的:

评估来自巴西和亚洲的Nelore,Gir和Red Sindhi牛群的选择特征 (SS).
为了识别由不同的形成和选择历史导致的不同的遗传变异.
专注于巴西牛群中的SS.

主要方法:

利用了种群之间的扩展单双型同性 (XP-EHH),种群之间的特定部位扩展单双型同性 (Rsb) 的比率和基固定指数 (Fst) 来检测SS.
采用50kb窗口大小的非滑动窗口方法来定义SS区域.
对每个品种的确定SS区域内的基因进行功能分析.

主要成果:

在SS区域内分别确定了Nelore,Gir和Red Sindhi牛的62,57和72个基因.
基因主要与生产力,生殖能力,耐热性,免疫系统,气质和外套颜色特征有关.
巴西和亚洲的牛群体表现出不同的选择过程,塑造了它们的遗传构成.

结论:

选择签名证明了育种计划对生产要求的牛遗传学的影响.
与耐热性,气质和免疫性相关的基因表明适应巴西的环境条件和选择标准.
了解SS可以告知育种策略,以提高Nelore,Gir和Red Sindhi牛的抵抗力,适应性和生产力.

关键词:

适应遗传学适应遗传学遗传选择是一种基因选择.哈普洛型的分析分析.热耐受性基因是热耐受性的基因.牲畜基因组学动物基因组学塞布的牛是塞布人的牛.

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