遗传参数估计了印度巴达瓦里水牛的牛奶产量和成分
Badri Prasad Kushwaha1, Sultan Singh2, Krishna Kunwar Singh2
1ICAR-Central Institute for Research on Buffaloes, Hisar, 125001, Haryana, India.
Tropical animal health and production
|May 30, 2025
概括
分析了Bhadawari水牛牛奶产量和成分的遗传参数. 低遗传性和重复性表明,牛奶生产特征的遗传收益潜力有限.
科学领域:
- 动物遗传学和动物繁殖
- 乳制品科学 乳制品科学
- 量化遗传学 量化遗传学
背景情况:
- 巴达瓦里水牛是印度重要的土著乳品品种.
- 了解遗传参数对于有效的育种计划至关重要.
- 测试日的牛奶产量和成分分析为乳制品动物的表现提供了洞察力.
研究的目的:
- 为了估计测试日巴达瓦里水牛的牛奶产量和牛奶成分的遗传参数.
- 评估这些特征的遗传性,永久性环境影响和重复性.
- 确定牛奶生产和成分特征之间的遗传和表型相关性.
主要方法:
- 在8年的时间里 (2014-2021年) 分析了93只巴达瓦里水牛的2593个哺乳记录.
- 使用贝叶斯方法和限制最大概率 (REML) 来进行参数估计.
- 计算的遗传性,永久的环境影响 (c2),重复性和遗传/表型相关性.
主要成果:
- 牛奶产量和成分的遗传概率估计一般较低,从0.01 (蛋白质) 到0.14 (总固体) 之间.
- 永久性环境影响和可重复性措施也低至中度.
- 对于大多数特征对来说,观察到积极的遗传相关性,除了牛奶产量和脂肪/总固体之间的例外.
结论:
- 低遗传性和重复性表明,通过选择,巴达瓦里水牛的牛奶产量和成分的直接基因改进有限.
- 育种策略应考虑复杂的遗传结构和环境对这些特征的影响.
- 进一步研究替代选择标准或杂交可能有利于提高该品种的牛奶产量.
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