巢中的卵产量和筑巢行为:与蛋质量和床上的产母的生物质量有遗传相关性
1PEGASE, INRAE, Institut Agro, 35590 Saint Gilles, France; NOVOGEN, 22960 Plédran, France.
Animal : an international journal of animal bioscience
|September 10, 2023
概括
选择无养的需要了解与有关的特征. 这项研究发现,巢穴使用与整体蛋质量或体重之间的遗传联系较弱,但强调了蛋强度的潜在权衡.
科学领域:
- 动物科学动物科学
- 遗传学 是一个遗传学.
- 禽畜科学 禽畜科学 禽畜科学
背景情况:
- 在产母生产中,越来越多地采用无住房,需要巢穴来有效收集蛋.
- 传统的育种计划专注于像蛋质量和体重 (BW) 这样的特征,对它们与无系统中与巢相关行为的遗传联系的理解有限.
研究的目的:
- 在无条件下估计蛋质量和BW的遗传性.
- 确定与有关的特征 (化行为,中蛋产量) 和关键的生产/质量特征之间的遗传相关性.
主要方法:
- 分析了1455只罗德岛红和1538只白的表型数据.
- 单个电子被用来记录与有关的特征,并识别蛋以进行单个质量测量.
- 使用多种特征的动物模型来估计每个线的遗传性和遗传相关性.
主要成果:
- 在两种品种中,卵子质量和BW的遗传能力均为中度至高 (0.17-0.74).
- 观察到,与有关的特征与蛋质量或BW之间存在通常较弱的遗传相关性.
- 在蛋的强度和产卵速度/节奏之间发现了强烈的,对抗性的遗传相关性;白色的Leghorns与蛋的重量,形状,白皮高度和BW显示了中等到强烈的相关性.
结论:
- 可以选择与有关的特征,以改善适应无子养的情况,而不会影响蛋的整体质量和BW.
- 在将与有关的特征纳入繁殖目标时,蛋的强度需要仔细监测.
- 建议在更大,更多样化的群体中进一步验证.
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