在更高的环境温度下,住房中的奶牛的集群行为
Kareemah Chopra1, Holly R Hodges2, Zoe E Barker2
1Department of Mathematical Sciences, University of Essex, Colchester, Essex, CO4 3SQ, United Kingdom.
Journal of dairy science
|November 3, 2023
概括
随着谷仓温度的上升,牛群的行为会增加,可能会加剧热应激. 这项研究使用精密畜牧业来追踪奶牛,揭示了英国自由仓库库中捆绑和热量之间的联系.
科学领域:
- 动物行为 动物行为
- 畜牧业管理 畜牧管理
- 环境生理学环境生理学
背景情况:
- 牛群结合受到社会因素,压力和资源竞争的影响.
- 牧场放牧的牛在更高的温度下表现出更多的团结,可能是为了控制或寻求阴影.
- 了解住房奶牛的集群对福利和生产力至关重要.
研究的目的:
- 为了研究环境温度与谷仓奶牛群的捆绑行为之间的关联.
- 为了利用精密畜牧业 (PLF) 高分辨率跟踪牛的空间行为.
- 为了确定捆绑是否是限制乳牛对热应激的不适应反应.
主要方法:
- 一个商业乳牛群 (约. 100头牛) 在英国的自由仓库里被监测了4个月,使用实时局部定位系统.
- 空间位置和活动以高时间分辨率记录.
- 每小时使用群体范围大小,牛间平均距离 (ICD) 和近邻平均距离 (NND) 来量化群体.
主要成果:
- 集群行为 (减少范围大小,ICD,NND) 在环境温度超过20°C时显著增加.
- 空间使用强度与谷仓内的局部温度变化正相关.
- 空间使用和局部温度之间的相关性在更高的环境温度下下降.
结论:
- 这项研究提供了第一个高分辨率的证据,将集群行为与温带,仓库的乳牛群中更高的环境温度联系起来.
- 增加集群可能会加剧个体奶牛经历的局部热量,这表明潜在的不适应性反应.
- 需要进一步的研究来阐明热应激和住房奶牛福利的机制,并为管理策略提供信息.
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