一个自动喷雾器冷却系统有效地缓解了奶牛的热应激
En Liu1, Liping Liu2, Zhili Zhang3
1Jiangxi Province Key Laboratory of Animal Nutrition, Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang 330029, China.
Animals : an open access journal from MDPI
|September 14, 2024
概括
自动喷雾器有效地减少了奶牛的热应激,通过增强乳头功能和有益细菌来改善牛奶的生产和质量. 这项技术为面临高温挑战的奶牛农提供了可行的解决方案.
科学领域:
- 动物科学动物科学
- 乳制品生产 乳制品生产
- 鲁门 微生物学
背景情况:
- 热压对奶牛的生产力和经济回报产生负面影响.
- 有效的冷却系统对于减轻热应激效应至关重要.
- 自动喷雾器 (SPs) 为奶牛的热量管理提供了一个潜在的解决方案.
研究的目的:
- 研究自动喷雾器缓解奶牛热应激的机制.
- 评估SPs对奶牛产量,牛奶质量和小牛皮健康的影响.
- 探索SPs对肠微生物群和发酵的调节作用.
主要方法:
- 1208只多母奶牛被分为喷雾器 (SP) 和控制 (CON) 组.
- 监测环境和生理参数,包括温度,DMI和牛奶产量.
- 分析了血液中的挥发性脂肪酸 (VFA) 和微生物组成.
主要成果:
- SPs显著降低了体温和牛奶体细胞计数.
- 在SP组中,干物摄入量 (DMI),牛奶产量和牛奶脂肪含量显著增加.
- 随着越来越高的VFA水平,乳液发酵得到改善,关键纤维降解细菌种群增加.
结论:
- 自动喷雾器有效地减轻奶牛的热应激.
- SPs通过积极调节乳头微生物群和发酵来提高生产性能和牛奶质量.
- 这项研究强调了SPs在热应激下改善奶牛福利和生产力的有效性.
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