识别影响尸体特征的错误变种,用于韩华精密育种
Dong Jae Lee1, Yoonsik Kim2, Phuong Thanh N Dinh2
1Division of Animal & Dairy Science, Chungnam National University, Daejeon 34134, Republic of Korea.
Genes
|October 28, 2023
概括
研究人员确定了关键遗传变异 (SNP) 影响汉武牛的尸体特征. 这些发现为通过基因组选择在商业农业中改善肉类质量和体重提供了有价值的标记.
科学领域:
- 动物遗传学动物遗传学
- 量化遗传学 量化遗传学
- 基因组选择 基因组选择
背景情况:
- 汉武牛在经济上很重要,像体重和肉质这样的尸体特征显著影响了利能力.
- 识别与这些特征相关的遗传变异对于高效的育种计划至关重要.
研究的目的:
- 为了确定因果误解变异与尸体重量,背部脂肪厚度,眼肌面积和Hanwoo牛的石英分数相关.
- 评估这些变种作为商业汉种群中基因组选择标记物的潜力.
主要方法:
- 在16,970头商业汉牛中分析了从归算序列数据 (ARS-UCD1.2) 中误解突变的分析.
- 对于尸体特征进行外体特异关联测试.
- 显著单核酸多态 (SNPs) 的识别和特征及其对遗传变异的贡献.
- 单种类型组合的生成和基因组估计繁殖值 (GEBV) 的评估.
主要成果:
- 33,2,1和3个显著的SNP与尸体重量 (CW),背部脂肪厚度 (BFT),眼肌面积 (EMA) 和大理石分数 (MS) 相对应.
- 发现的关键基因包括PRKDC (CW,EMA),ZFAND2B (BFT) 和ACVR2B (MS).
- 显著的误解SNP解释了大量的遗传变异 (高达8.47%的CW) 并显示了有利和不利的单元型组之间的GEBV的显著差异.
结论:
- 像PRKDC,ZFAND2B和ACVR2B这样的基因中的Missense SNP是Hanwoo牛中重要尸体特征的显著因果变异.
- 这些已识别的SNP代表了用于标记器辅助选择和基因组选择策略的有价值的遗传标记物,以提高Hanwoo育种计划中的尸体质量和生产力.
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