对印度杂交牛的性能特征的遗传和表型参数的元分析
Jayadev Rath1, Munish Gangwar1, Sheikh Firdous Ahmad1
1ICAR-Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India.
概括
这项研究使用元分析来估计印度杂交牛的遗传和表型参数. 结果显示生产和繁殖特征的遗传性低至中等,表明环境影响和通过管理和选择改善的潜力.
科学领域:
- 动物遗传学和动物繁殖
- 量化遗传学 量化遗传学
- 畜牧业生产 畜牧业生产
背景情况:
- 遗传和表型参数对于有效的牛养殖计划至关重要.
- 印度杂交的牛表现出显著的多样性,需要全面的性能分析.
- 元分析提供了一种强大的方法来综合现有数据,以获得全人口的见解.
研究的目的:
- 进行元分析并估计印度杂交牛的性能特征的遗传和表型参数.
- 提供包括体重,牛奶产量和第一次分娩时的年龄在内的特征的综合估计.
- 为制定有效的动物改善策略提供信息.
主要方法:
- 在严格的数据编辑和质量控制后,对130篇选定的文章进行了元分析.
- 聚合最小平方平均值,遗传性,重复性和遗传相关性被计算出来.
- 对表型参数,遗传性和表型相关性进行了评估.
主要成果:
- 综合估计,出生时的体重在20.54到25.84公斤之间.
- 第一次哺乳期牛奶产量的估计在1542.05至2691.44公斤之间.
- 聚合的遗传概率估计有所不同:增长为0.130.69,生产为0.090.76,生殖特征为0.050.25.
- 聚合的重复性估计值中等 (0.220.42),和聚合的遗传相关性是积极的 (0.090.97).
结论:
- 印度杂交牛的生产和繁殖特征的遗传性通常低至中等.
- 环境因素和非添加物遗传效应显著影响性能.
- 建议对遗传改进进行有效的选择和最佳管理策略.
- 聚合的参数估计可以指导在缺乏具体数据的情况下的育种计划.
关键词:
杂种的杂种,就是杂种.生育能力 生育能力 生育能力 生育能力增长的增长增长的增长增长的增长.遗传性 遗传性 遗传性牛奶生产 牛奶生产综合估计估计的估计.taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine taurine 是一种类型的蛋白质,其含量很大.
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