对野猪生殖特征的遗传参数的评估
Emil Krupa1, Zuzana Krupová1, Eliška Žáková1
1Institute of Animal Science, 10400 Prague, Czech Republic.
Genes
|November 25, 2023
概括
这项研究使用单核酸多态数据估计了野猪生殖特征的遗传参数. 结果显示,精子质量和性欲的遗传性可以为改善养猪的遗传选择提供信息.
科学领域:
- 动物遗传学动物遗传学
- 生殖生物学 生殖生物学
- 量化遗传学 量化遗传学
背景情况:
- 野猪的生殖性能对于高效的猪生产至关重要.
- 了解生殖特征的遗传参数对于遗传改进计划至关重要.
- 单核酸多态 (SNP) 数据为估计这些参数提供了强大的工具.
研究的目的:
- 使用SNP数据估计猪主要生殖特征的遗传参数.
- 评估基本特征 (精子体积,度,运动性,异常精子,性欲) 和衍生性特征 (总精子数,功能精子数) 的遗传性.
- 为了比较母和父品种之间的遗传参数.
主要方法:
- 利用了2010年至2022年期间收集的2249头野猪的109,836个精液样本的大数据集.
- 采用单步基因组最佳线性无偏预测 (ssGBLUP) 方法进行基因参数估计.
- 应用了基本特征的多特征模型和衍生特征的单特征模型,分别分析母和父品种.
主要成果:
- 精子质量特征的遗传系数通常很低,从0.099到0.342.
- 在母和父品种之间观察到遗传能力的显著差异,特别是精子度 (0.099对0.271).
- 与母品种相比,性欲遗传率在父品种中是母品种的两倍.
结论:
- 使用ssGBLUP估计的遗传参数为野猪遗传评估提供了宝贵的见解.
- 这些参数可以整合到常规育种计划中,以提高猪的生殖效率.
- 特定品种的遗传参数估计对于有针对性的选择策略很重要.
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