全基因组测序GWAS揭示了牛基因组对肉牛肠道甲排放的影响
Leonardo M Arikawa1, Lucio F M Mota2, Larissa F S Fonseca2
1Department of Animal Science, School of Agricultural and Veterinarian Sciences, São Paulo State University (UNESP), Jaboticabal, SP, 14884-900, Brazil. leeoarikawa@gmail.com.
Scientific reports
|December 17, 2025
概括
基因组分析确定了影响内罗尔牛甲排放的关键区域和基因,为可持续牛肉生产提供了一条道路. 这项研究有助于开发基因选择策略,以减少对环境的影响,而不牺牲生产力.
科学领域:
- 动物遗传学动物遗传学
- 环境科学 环境科学
- 可持续农业 可持续农业
背景情况:
- 可持续的动物生产对于减轻甲排放至关重要.
- 测量单个甲产量是昂贵和劳动密集的.
- 基因组方法为识别遗传因素提供了一个可行的替代方案.
研究的目的:
- 使用GWAS识别与肠道甲排放特征相关的基因组区域和候选基因.
- 为了探索内罗尔牛中甲排放的遗传结构.
- 为减少甲排放提供基因选择的基础.
主要方法:
- 用测序数据进行全基因组协会研究 (GWAS).
- 单步GBLUP方法用于SNP显著性估计.
- 对1042只内罗尔动物的五种甲排放相关特征 (ME,RME,MY,MI,MM) 的分析.
主要成果:
- 对于所有五种甲排放特征,都确定了重要的SNP和候选基因.
- 发现了多个甲排放特征的共同基因组区域,并与料效率和生长有关.
- 已识别的基因参与了各种生物过程,包括胃肠功能和新陈代谢.
结论:
- 牛遗传学通过影响食动物生态系统,在调节甲排放方面发挥着重要作用.
- 甲排放是一种复杂的多基因特征.
- 这些发现支持开发用于可持续肉牛生产的遗传选择策略.
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