一种用于分析纯种和杂种数据的多变体游戏模型. 两个伊比利亚猪种群之间的例子
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Updated: Jul 12, 2025

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Noninvasive, In-pen Approach Test for Laboratory-housed Pigs
Published on: June 5, 2019
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Houssemeddine Srihi1, David López-Carbonell1, Noelia Ibáñez-Escriche2
1Facultad de Veterinaria, Instituto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, Zaragoza, Spain.
概括
猪的杂交通过考虑游戏效应来改善生殖特征. 孕产妇的游戏效应显著影响幼大小,这表明印记可能参与遗传控制.
科学领域:
- 动物遗传学动物遗传学
- 量化遗传学 量化遗传学
- 生殖生物学 生殖生物学
背景情况:
- 在养猪计划中,杂交对于增强异构和生殖特征至关重要.
- 互交交叉性能的变化表明, sire 和 dam 效应之间存在复杂的游戏相关性.
研究的目的:
- 开发和应用一个多变体体育模型来分析相互交叉猪交叉的相关体育效应.
- 在伊比利亚猪种群中研究遗传控制子大小 (出生小猪总数和活生生的小猪数).
主要方法:
- 开发了一种多变异性游戏模型,每种父母群体包含多达四个相关的游戏效应.
- 该模型被应用到从互交交叉的Entrepelado和Retinto伊比利亚猪的子大小数据,使用贝叶斯方法.
- 固定的效应包括平价性,服务父品种和群年季节;随机效应包括主导和永久的环境母猪效应.
主要成果:
- 游戏相关性的所有后期估计均为正值,范围为0.04至0.53.
- 在所有人群中,母亲的游戏效应显示出比父亲效应更高的差异估计.
- 在纯种犬的父亲效应和杂交犬的父亲/母亲效应之间观察到积极的游戏相关性.
结论:
- 这些发现表明,潜在的印记效应会影响猪子大小的遗传控制.
- 将杂交数据纳入纯种人的育种价值预测中,对于准确的遗传评估至关重要.
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