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关于牛群热应激的研究
1School of Electrical and Data Engineering, Faculty of Engineering & IT, University of Technology Sydney, Sydney, New South Wales, Australia.
Australian veterinary journal
|August 24, 2023
概括
牛使用行为和生理方法保持稳定的体温,以管理与环境的热交换. 适当的管理,品种选择和适应是防止畜牧业热应激的关键.
科学领域:
- 动物生理学 动物生理学
- 环境生物学环境生物学
- 畜牧业管理 畜牧管理
背景情况:
- 牛通过新陈代谢,消化和活动产生内源热量.
- 外部传热,主要是辐射,显著影响牛的体温.
- 牛利用同热疗法,采用行为和生理策略来调节热交换.
研究的目的:
- 阐明牛在不同气候条件下控制体温的机制.
- 确定影响牛热传递的关键因素.
- 提供关于管理牲畜热应激的见解.
主要方法:
- 对行为控制的分析 (寻找阴影,聚集,活动).
- 检查生理控制 (血液流动,外套修饰,新陈代谢率).
- 评估环境因素 (温度梯度,风速,辐射).
主要成果:
- 当环境温度超过皮肤温度时,蒸发热量损失 (出汗,呼吸) 是至关重要的.
- 品种差异 (Bos indicus与Bos taurus) 影响适应热量.
- 行为和生理反应被用来管理辐射,对流,导电和蒸发.
结论:
- 牛具有固有的温度调节机制,包括行为和生理适应.
- 适应和品种选择对于优化牛群适应不同气候至关重要.
- 有效的农场管理实践对于最大限度地减少热应激和确保牲畜福祉至关重要.
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