Autumn is a high-incidence period for dairy cow diseases, making scientific disease prevention crucial for maintaining herd health. However, preventive measures may induce physiological, immune, and chemical stress in cows, disrupting the endocrine system, altering energy allocation, and consequently reducing reproductive performance. This paper systematically analyzed the mechanisms through which autumn disease prevention affects dairy cow reproduction, including stress-induced endocrine disorders, nutrient competition triggered by immune activation, and indirect negative impacts of health issues on reproduction. Integrated management strategies are proposed：optimizing prevention procedures （staggered operations, low-stress vaccines and medications）, enhancing nutritional regulation （increasing energy and key nutrient supply）,implementing reproductive monitoring and hormonal interventions, and refining operational procedures to mitigate stress. These measures aim to synergistically improve both health protection and reproductive efficiency, providing theoretical foundations and practical guidance for dairy farm management in autumn.

dairy cow reproductive performance  /  autumn disease prevention  /  stress management  /  nutritional regulation  /  hormonal intervention