Heat stress affects the milking performance of lactating dairy cows through various routes,such as reducing feed intake,altering energy metabolism pattern,activating immune system and causing inflammation,and influencing mammary gland development and function.Alleviating measures against heat stress in dairy farms are usually taken from the aspects of nutrition,management and genetics,while the effect is limited.Understanding the potential mechanisms by which heat stress causes reduction in milk production in lactating dairy cows is crucial for controlling milk production losses resulted from heat stress.This paper reviewed the research progress on the influence mechanisms of heat stress on the milking performance of lactating dairy cows,in hoping to provide references for the scientific formulation of heat stress alleviating measures in dairy cow production.
维普
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