在产后健康和炎症性疾病的奶牛的行为和生理变化的比较
Chen-Yu Huang1, Tomoki Kojima1,2, Ken-Ichi Yayou1
1Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Tsukuba, Japan.
Animal science journal = Nihon chikusan Gakkaiho
|May 29, 2024
概括
患有炎症性疾病的产后奶牛表现出更高的心率和交感神经系统活动. 患病的奶牛也表现出更多的站立和减少的休息,表明不适.
科学领域:
- 兽医医学 兽医医学 兽医医学
- 动物生理学 动物生理学
- 动物行为 动物行为
背景情况:
- 牛的分娩与疼痛和压力有关,增加炎症状况的风险.
- 产后炎症疾病的早期检测对于及时干预和改善动物福利至关重要.
研究的目的:
- 用行为和心率变化 (HRV) 度量来比较健康和患病的奶牛之间的产后健康状况.
- 在临床表现之前识别炎症疾病的潜在指标.
主要方法:
- 持续记录心率 (HR),HRV参数 (LF,HF,LF/HF比率,总功率),以及维护行为 (站立,躺卧,食,反,睡眠) 的时间预算,在8只霍尔斯坦牛的产后0至168小时内进行.
- 每天收集牛奶和血液样本以诊断疾病,通过加利福尼亚乳腺炎测试和血清哈普托格洛宾度.
- 根据诊断标准将奶牛分为健康 (n=3) 和患病 (n=5) 组.
主要成果:
- 与健康的奶牛相比,患病的奶牛的HR,LF/HF比率显著更高,总功率更低 (p < 0.05).
- 这些HRV变化表明,在患有炎症性疾病的奶牛中,交感神经系统占主导地位.
- 患病的奶牛表现出更长的站立时间和更少的卧卧时间 (p < 0.05),可能是对炎症不适的反应.
结论:
- 心率变化和行为变化可以作为乳牛产后炎症疾病的早期指标.
- 监测HRV和行为为评估奶牛健康和检测亚临床炎症提供了一种非侵入性方法.
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