品种,平价和牛奶中的几天都会影响奶牛舌头滚动的风险
J A Robbins1, K McCandless2, D M Weary3
1Department of Animal and Dairy Sciences, University of Wisconsin, Madison 53706.
JDS communications
|June 26, 2023
概括
乳牛的舌头滚动 (TR) 受品种和平等的影响,Jerseys更容易发生这种刻板印象的行为. 像牛奶中的日子 (DIM) 这样的因素也会在不同品种和品种中不同影响TR,这表明遗传和发育的作用.
科学领域:
- 动物行为 动物行为
- 动物遗传学动物遗传学
- 乳制品科学 乳制品科学
背景情况:
- 刻板印象的行为,如牛的舌头滚动 (TR),是缺乏明确的生物目的的重复性运动.
- 舌头滚动涉及重复的圆形舌头运动,在母乳奶牛的挤奶过程中观察到.
研究的目的:
- 为了评估一大批商业乳牛群中舌头滚动 (TR) 的流行情况.
- 为了研究品种 (泽西vs泽西-霍尔斯坦交叉),平价和牛奶中的几天 (DIM) 对TR行为的影响.
- 为了确定品种,平价和DIM之间的相互作用,影响TR的可能性.
主要方法:
- 视频监控了8158只成年哺乳乳母乳奶牛,连续三次奶.
- 后勤回归分析以确定品种,平价和DIM对TR的影响.
- 检查品种和平等性之间的相互作用,以及TR发生的品种和DIM.
主要成果:
- 29.0%的奶牛至少有一次表现出TR;1.7%的奶牛在所有三次挤奶期间都表现出TR.
- 泽西奶牛比泽西-霍尔斯坦交叉更容易翻舌,不管它们的相等性如何.
- DIM对TR的影响有所不同:DIM在原生母牛Jerseys中增加,但在Jersey-Holstein奶牛中减少.
结论:
- 品种和均等性显著影响乳牛的舌头滚动倾向.
- 哺乳期 (DIM) 与品种和平等性相互作用,以修改TR行为.
- 研究结果表明,遗传和发育因素都会影响个体奶牛参与舌头滚动的可能性.
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