后腿位置得分:一种新的特征,可以通过遗传来减少的发病率
A Köck1, J Kofler2, L Lemmens2
1ZuchtData EDV-Dienstleistungen GmbH, Dresdner Str. 89/18, 1200 Vienna, Austria.
JDS communications
|January 15, 2024
概括
后腿位置得分 (HFPS) 可以帮助识别乳牛面临的风险. 这一特征显示出与的强烈遗传联系,这表明它可以用于改善牛健康和福利的繁殖计划.
科学领域:
- 动物科学动物科学
- 兽医医学 兽医医学 兽医医学
- 遗传学 是一个遗传学.
背景情况:
- 是奶牛群中的一个重大问题,影响动物福利并造成经济损失.
- 后脚位置得分 (HFPS) 是对相对于牛的中线的后指位对齐的视觉评估.
- 较高的HFPS与侧爪的高跟高度增加有关,这表明的风险更高.
研究的目的:
- 评估后脚位置得分 (HFPS) 作为乳牛的遗传评估的辅助特征.
- 为了确定HFPS在检测的有效性.
主要方法:
- 在35个农场收集了1,064只Fleckvieh奶牛的3,478份HFPS记录.
- 使用HFPS的3类评分系统和5类运动评分系统 (1=正常,5=严重).
- 采用双变线性动物模型进行遗传分析,结合固定和随机效应.
主要成果:
- 在检测腿时,HFPS表现出69.5%的灵敏度和66.8%的特异性 (位置分数≥2).
- 遗传概率估计为HFPS的0.07和运动分数的0.10.
- 在HFPS和运动分数之间发现了0.80的高遗传相关性.
结论:
- HFPS显示出作为一种有价值的基因评估特征的潜力,旨在减少乳牛中的发病率.
- 将HFPS整合到遗传选择策略中可以改善群体的健康和福利.
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