奶牛热耐受性评价和影响因素及其作用机制
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刘辰昊(2000—),男,山东济南人,硕士研究生,从事奶牛热环境与营养研究。E-mail: lchhh0920@qq.com |
Office editor: 菅景颖
收稿日期: 2025-03-12
网络出版日期: 2025-09-12
基金资助
国家自然科学基金项目(U23A20231)
Evaluation, Influencing Factors and Mechanism of Heat Tolerance in Dairy Cows
Received date: 2025-03-12
Online published: 2025-09-12
刘辰昊 , 孙会增 , 石恒波 , 刘建新 . 奶牛热耐受性评价和影响因素及其作用机制[J]. 动物营养学报, 2025 , 37(9) : 5749 -5757 . DOI: 10.12418/CJAN2025.467
With the intensification of global warming, the problem of heat stress in dairy cows has become increasingly importance, adversely affecting animal health and production performance. When exposed to heat stress, dairy cows develop thermal tolerance to hot environment by reducing metabolic heat production and regulating body temperature. This article summarized the evaluation indicators of heat tolerance in dairy cows from various aspects, including environment, physiology, productivity and blood biochemical indicators; it also explored the multiple factors influencing heat tolerance in dairy cows such as animal, environment and nutrition factors; furthermore, it elaborated the mechanisms by which dairy cows adapt to the hot environment, involving behavior, endocrine regulation, metabolic mechanisms, and changes in the community of rumen microorganisms. This review aims to understand the heat tolerance in dairy cows and its underlying mechanisms, and is expected to provide references for improving the health status and production performance of dairy cows under heat stress environments.
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