How to deal with high temperature and high humidity weather in dairy barn production.

In the high temperature and high humidity season in summer, due to the reduction of food intake and rainy and humid environment, it has a great impact on dairy farming, which is easy to cause many losses such as the decline of raw milk quality, the increase of mastitis and limb and hoof diseases in dairy cows. At present, the main countermeasures under the condition of house feeding are as follows: ① Strengthening environmental control and paying attention to ventilation and cooling of cowshed, such as building sheds, installing fans and spraying cooling systems, planning isolation belts of cowshed and planting shelterbelts. (2) Nutrition regulation, such as providing sufficient clean drinking water, increasing concentrate-feed ratio, reducing roughage feeding, improving protein and energy level, and using rumen regulators (buffers, Chinese herbal medicines, organic acids and long-chain fatty acids, etc.). ) and supplement trace elements (sodium, potassium and magnesium) and vitamins (vitamin A and vitamin E); ③ Adjustment of feeding management methods, such as adjusting feeding time and methods, adjusting calving season, and improving the health and environmental sanitation of cattle; ④ Cultivating heat-resistant varieties; ⑤ At the same time, in the hot season, besides preventing and controlling the heat stress of dairy cows, we should also strengthen the heatstroke prevention and cooling work of dairy farm employees, put people first, strengthen the welfare treatment of employees, and adjust or reasonably arrange the working hours of employees, such as reducing the working hours at noon and increasing the working hours at night and in the morning.

(Gao Min, contributing author: Du Ruiping)