通过功能性注释,探索商业布兰古斯群中的基因组内生育和选择特征
Gabriel A Zayas1, Eduardo E Rodriguez2, Aakilah S Hernandez3
1Department of Animal Sciences, University of Florida, Gainesville, FL, USA. gzayas97@ufl.edu.
Journal of applied genetics
|March 26, 2024
概括
对布兰古斯牛的基因组分析揭示了影响生长,牛奶和肉类特征的选择特征. 这项研究确定了关键的遗传区域,并强调了牛奶生产在育种计划中的重要性.
科学领域:
- 动物遗传学动物遗传学
- 基因组学就是基因组学.
- 量化遗传学 量化遗传学
背景情况:
- 像Brangus这样的复合牛品种结合了Bos taurus和Bos indicus的特征,以提高适应性.
- 品种的形成和选择可以留下明显的基因组特征并改变种群结构.
研究的目的:
- 评估商业布兰古斯牛的基因组内生.
- 识别选择签名及其功能角色.
- 选择和非选择牛之间的选择签名进行比较.
主要方法:
- 使用GGP-F250K阵列对4035头布兰古斯牛进行基因造型.
- 利用同胞性运行 (ROH) 来检测选择和计算内生.
- 使用QTL丰富分析和文献审查来将ROH岛屿与特征联系起来.
主要成果:
- 平均基因组内生是5%,起源于遥远的祖先.
- 确定了9个ROH岛屿,与生长,牛奶,尸体,繁殖和肉质特征有关.
- 在BTA14上的一个显著的ROH岛上含有PLAG1基因,影响生长和尸体的特征. 牛奶特征ROH岛在精选的母牛中更为突出.
结论:
- 选择压力塑造了布兰古斯基因组,影响了关键的生产特征.
- 识别的基因组区域为布兰古斯牛的遗传结构提供了洞察力.
- 了解这些选择特征有助于优化育种策略,以提高产量.
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