肉牛对炎热条件的行为反应
Musadiq Idris1, Megan Sullivan2, John B Gaughan2
1Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Punjab, Pakistan.
Animals : an open access journal from MDPI
|August 29, 2024
概括
气候变化导致牛的热应激. 监测行为变化,如改变身体位置和减少食,可以帮助识别受影响的动物,高纤维饮食可以减轻这些与热有关的反应.
科学领域:
- 动物科学动物科学
- 适应气候变化 适应气候变化
- 畜牧业管理 畜牧业管理
背景情况:
- 由于气候变化导致的全球气温上升增加了牛的热量负荷.
- 了解牛对热的行为反应对于管理热应激和确保动物福利至关重要.
研究的目的:
- 为了评估黑色安格斯小牛在热负荷下的行为变化.
- 评估饮食成分对热应激行为的影响.
- 确定用于诊断牛热应激的行为指标.
主要方法:
- 24头黑格斯公牛的个体暴露在受控的热条件下.
- 观察身体部位的位置,食,身体的维护和呼吸.
- 饮食的比较:一种谷物谷物完成者饮食与一种用花花替代的饮食.
主要成果:
- 增加的呼吸速率与增加的步行相关,特别是在热量负荷期间与左肢相关.
- 当牛暴露在热中时,牛的饮食,理和理行为减少了.
- 特定的姿势 (低头,后置耳朵,抬起尾巴) 和喘气是热量负荷的一致指标.
- 与替代饮食相比,食用谷物谷物饮食的牛表现出更长时间的站立和特定的耳朵/尾巴姿势.
结论:
- 诸如呼吸速率,步行和身体姿势等行为指标可以有效地检测受热负荷影响最严重的牛.
- 用高纤维成分替代谷物谷物,如花干草,可以减少牛的高温行为反应.
- 饮食调整提供了一个可行的策略,以减轻热应激对牲畜的负面影响.
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