肠道甲与牛肉加工系统中经济重要特征之间的遗传相关性
Clodagh V Ryan1,2, Thierry Pabiou1, Deirdre C Purfield2
1Irish Cattle Breeding Federation, Link Road, Ballincollig, Co. Cork, Ireland.
Journal of animal science
|May 12, 2025
概括
为降低甲排放而繁殖的肉牛可能会影响生长和尸体重量. 遗传相关性揭示了减少肠道甲和保持牛肉生产中经济重要特征之间的权衡.
科学领域:
- 动物科学动物科学
- 遗传学 遗传学 是一个
- 气候变化缓解缓解 气候变化缓解
背景情况:
- 气候变化需要畜牧业的可持续解决方案.
- 减少来自牛的肠道甲排放是一个关键的环境目标.
- 育种计划可以影响甲生产和经济特征.
研究的目的:
- 确定甲排放与爱尔兰肉牛经济重要特征之间的遗传相关性.
- 评估选择降低甲对分娩表现,尸体价值和效率等特征的影响.
- 为可持续牛肉生产提供信息的育种策略.
主要方法:
- 使用GreenFeed排放监测系统,利用了来自1835头牛 (2018-2024) 的甲和二氧化碳流量数据.
- 分析了多达402,039只动物的更大数据集,并提供了表型性能的数据.
- 采用动物线性混合模型来估计甲排放和性能特征之间的 (共同) 差异组件.
主要成果:
- 在甲排放和料摄入 (0.49-0.76) 和尸体重量 (0.44-0.50) 之间发现了强烈的正相关性.
- 甲与完成时的年龄 (-0.18至-0.27) 之间的对抗性相关性,表明更早完成的动物产生更多的甲.
- 甲和尸体构成之间存在微弱的正相关性 (0.09-0.12),这表明有选择的潜力.
结论:
- 选择减少的甲可能会对料摄入量和尸体重量产生负面影响.
- 以较早的成年期进行育种与甲产量增加有关.
- 需要制定战略,以平衡甲减排与牛肉养殖中经济特征的保护.
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