全基因组关联研究确定了候选基因,该基因调节了龙陵黄山羊的多阶段体型特征
1State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
Animal : an international journal of animal bioscience
|February 13, 2026
概括
这项研究在龙陵黄山羊中确定了129个显著的单核酸多态 (SNP),为增强生长特征和推进精密育种计划提供了有价值的遗传标记.
科学领域:
- 动物遗传学和动物基因组学
- 量化遗传学 量化遗传学
- 可持续的畜牧生产 可持续的畜牧生产
背景情况:
- 增强生长特征对于可持续的肉山羊生产和繁殖至关重要.
- 全基因组关联研究 (GWAS) 对于识别影响牲畜经济重要特征的遗传因素至关重要.
研究的目的:
- 检测全基因组单核酸多态 (SNPs) 与各种体型特征相关的龙陵黄色雌性山羊.
- 为了确定候选基因和影响肉山羊生长和身体形状的生物学途径.
主要方法:
- 300只长黄山羊母体的全基因组低深度测序.
- 全基因组关联研究 (GWAS) 使用6,153,300个归算的SNP.
- 对候选基因的显著SNP的注释和功能丰富分析.
主要成果:
- 确定了129个与体重 (BW),身高 (BH),身长 (BL),胸围 (CC),胸深 (CD),胸宽 (CW) 和大炮周长 (cc) 相关的全基因组显著SNP.
- 已经注释了146个候选基因,包括MMP16,MECOM,SCD5,LEF1,PDE4D,KCND2,EPHA5,ADAMTS3,GIGYF2和DGKB.
- 功能分析揭示了参与细胞外矩阵组织,脂质新陈代谢和生长因子受体活性的候选基因,EPHA5显示了类效应.
结论:
- 已识别的基因标记物和候选基因为山羊的基因组选择提供了宝贵的资源.
- 这些发现支持推进精密育种计划,旨在改善肉山羊种群的生长特征.
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