各种基因变异组合对阿瓦西羊母乳生产的育种价值的影响
Khaleel I Jawasreh1, Ahmad H Al-Amareen2
1Department of Animal Production, Faculty of Agriculture, Jordan University of Science and Technology, Box 3030, Irbid 22110, Jordan.
Veterinary world
|February 8, 2024
概括
益生素 (PRL) 和素 (CSN3) 基因中的遗传变异显著影响了阿瓦西羊的牛奶生产. 了解这些基因相互作用可以改善提高牛奶产量的育种选择计划.
科学领域:
- 动物遗传学动物遗传学
- 乳制品科学 乳制品科学
- 量化遗传学 量化遗传学
背景情况:
- 牛奶生产是阿瓦西羊种养殖的一个关键特征.
- 牛奶产量的遗传选择依赖于准确的繁殖值 (BVs).
- 众所周知,包括BLG,PRL,CSN3,CSN1S1和CSN2在内的几种基因会影响牛奶的产量.
研究的目的:
- 研究特定基因变异对阿瓦西羊乳生产估计育种值 (EBV) 的综合影响.
- 在阿瓦西羊群中识别与提高牛奶产量相关的遗传多态.
主要方法:
- 对391只阿瓦西羊的牛奶和血液样本进行分子分析 (测序).
- 鉴定BLG,PRL,CSN3,CSN1S1和CSN2基因的等位基因和基因型.
- 统计分析以确定基因变异及其对乳制品EBV相互作用的影响.
主要成果:
- PRL和CSN3基因变异显著影响了牛奶EBVs.
- BLG与CSN3和CSN1S1之间的表观相互作用,以及PRL,CSN3和CSN1S1之间的三向相互作用,显著影响了乳生产EBV.
- CSN3与CSN1S1和CNS1的联合作用也显著改善了牛奶生产BVs.
结论:
- 研究基因中的等位基因对于评估阿瓦西羊的繁殖价值至关重要.
- 将这些基因多态化纳入育种计划可以在乳制品生产中取得实质性的遗传收益.
- 基于这些发现的有针对性的遗传选择可以优化阿瓦西羊的奶产.
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