对德国霍尔斯坦牛的背部脂肪厚度和身体状况得分的遗传调查
Christin Schmidtmann1,2, Julius Mugambe1, Iulia Blaj1
1Institute of Animal Breeding and Husbandry, Christian-Albrechts-University Kiel, Kiel, Germany.
概括
乳牛的背部脂肪厚度 (BFT) 和身体状况得分 (BCS) 显示出明显的遗传差异和哺乳曲线. 常规的BFT记录提供了宝贵的见解,不仅仅是BCS,营养状况.
科学领域:
- 动物科学动物科学
- 遗传学 是一个遗传学.
- 乳牛生产 乳牛生产
背景情况:
- 关于乳牛背部脂肪厚度 (BFT) 的知识有限.
- 了解BFT对于评估身体储备和营养状况至关重要.
研究的目的:
- 调查BFT的哺乳曲线和遗传参数.
- 分析BFT,身体状况得分 (BCS) 和牛奶产量 (MKG) 之间的关系.
主要方法:
- 分析了1929年德国霍尔斯坦牛 (BFT,BCS,MKG) 的表型数据.
- 使用了家谱和基因组信息.
- 统变随机回归模型估计了第一个到第三个哺乳期的遗传参数.
主要成果:
- BCS和BFT的哺乳曲线显示出不同的模式,BFT的低点在哺乳期晚些时候发生.
- 与BCS (0.2970.332) 相比,BFT表现出更高的遗传性 (0.3570.424).
- 牛奶产量和BCS和BFT之间发现了负相关性,而BCS和BFT显示出强烈的正相关性 (0.7190.738).
结论:
- BFT和BCS在奶牛中表现出遗传差异,可能反映出不同的身体储备动态.
- 常规BFT记录可以补充BCS测量,提供增强的营养状况评估.
- BFT数据可以帮助优化乳牛群管理和遗传选择策略.
关键词:
背部脂肪 厚度 背部脂肪 厚度身体状况得分 身体状况得分乳牛牛奶牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛随机回归模型是一个随机回归模型.更多相关视频
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