在小型反动物中,IBD共享模式作为品种内混合指标
Stéphane Blondeau Da Silva1, Joram M Mwacharo2,3, Menghua Li4
1Rectorat Limoges, 87000, Limoges, France.
Heredity
|November 3, 2023
概括
遗传隔离的山羊和绵羊品种表现出更多的共享和更长的身份-由-后裔 (IBD) 段,表明更高的遗传完整性. 这一发现可以为当地品种及其适应性架构的保护工作提供信息.
科学领域:
- 动物遗传学 动物遗传学
- 人口遗传学 人口遗传学
- 基因组学就是基因组学.
背景情况:
- 了解品种混合物对于畜牧业的保护至关重要.
- 在混合品种中,由于杂交,预计会发生基因组碎片化.
- 认同后裔 (IBD) 模式可以反映品种的遗传历史.
研究的目的:
- 调查品种内IBD模式与山羊和绵羊中的添加剂水平之间的关系.
- 评估IBD共享是否可以作为遗传隔离的指标.
- 强调保护当地品种及其遗传完整性的重要性.
主要方法:
- 对来自111种山羊和156种绵羊品种的SNP基因型的分析.
- 使用ADMIXTURE软件和AV指数 (雷诺兹遗传距离) 推断添加剂水平.
- 统计分析包括平均值比较,斯皮尔曼相关性和通用添加模型 (GAM).
主要成果:
- 遗传孤立的品种显示出更高比例的共享IBD细分.
- 这些共享的IBD细分段在孤立的品种中也被发现更长.
- 在基因隔离和IBD细分特征之间观察到正相关性.
结论:
- 品种内IBD细分档案可以有效地表明品种的添加剂水平.
- 这项研究可能会导致开发出独立于更广泛的遗传景观的新型混合指标.
- 这些发现强调了保护当地品种及其独特的适应性遗传结构的必要性.
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