夏季为温带气候区的养场牛提供阴影的福利和绩效效益
David W Miller1, Anne L Barnes2, Teresa Collins2
1School of Agricultural Sciences, College of Environmental and Life Sciences, Murdoch University, Murdoch, WA, Australia.
Journal of animal science
|October 29, 2024
概括
在温带气候中为养场牛提供阴影,可以提供福利福利,并略微增加平均每日收益. 在阴影下的牛在中度热应激期间表现得更好,这表明对他们的福祉和表现产生了积极影响.
科学领域:
- 动物科学动物科学
- 农业科学 农业科学
- 环境科学 环境科学
背景情况:
- 牛牧场越来越多地考虑阴影来减轻热应激.
- 之前的阴影研究主要集中在高风险热带,不清楚温带的相关性.
研究的目的:
- 评估养场牛在西澳大利亚温和热应激风险区的阴影的福利和绩效优势.
主要方法:
- 960头黑格斯牛在夏季70天内被安置在阴影或没有阴影的子里.
- 评估体重增加,食摄入量,生理,行为和情绪状态指标.
主要成果:
- 阴影牛的平均每日 (0.13公斤) 略有增加,但干物质摄入量没有差异.
- 牛有效的温度调节;阴影牛在中度热应激和无阴影牛在没有压力的情况下表现出积极的行为.
- 没有阴影的牛在中度压力和所有牛在严重的压力表现出兴奋/焦虑的行为.
结论:
- 在温带的养场提供阴影,可以给牛带来明确的福利和适度的绩效改善.
- 阴影对牛的行为有积极的影响,特别是在温和的热压力时期.
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