1. Adjust diet ingredients to feed high-quality dairy cows with high-quality forage, and feed more concentrates or high-fat substances to increase the energy of the diet. Available beans, cottonseeds, and animal fats, with a supplement amount of 1%~ 1.5% is appropriate. In the full-price diet, increase the protein level by 1% to 2% so that the protein content is within 19%, and the crude fiber content should not be excessive, especially for silage. Practice shows that dairy cows with a milk yield of more than 32 kilograms should be controlled at 17 to 22 kilograms per day for silage in summer. 2. Increase dairy cows' beverages. Prepare dairy cows with good, nutrient-rich beverages that promote palatability and increase appetite. Practice has shown that: The proportion of 140 kg of feed added to 600 kg of water per day is cooked into a thin porridge-like beverage plus 9 grams of brown sugar. The beverage is poured on the leftovers three times a day and the remaining ingredients are eaten. 3. Strengthen the heatstroke prevention facilities can take some heatstroke cooling facilities, the main methods are shade, ventilation, water spray, wash cattle and other methods, such as on the outside, the arbor is blown with a fan, with cold water spraying the ground, walls, roof, cattle body Wait. 4. Change Feeding Methods Due to the hot weather, dairy cows have the poorest diet during the day. Therefore, you can feed the feeds at about 12 o'clock in the evening by feeding most of the diet on cooler days. This will reduce the impact of heat stress on dairy cows' intake, reduce leftovers, and increase milk production. 5. Do a good job in disease prevention and control During the high temperature season, especially the timely removal of cowhouse excreta, regular elimination of mosquitoes and flies, do a good job of environmental health, minimize the occurrence of disease in dairy cows, try to avoid breeding and calving in summer. The delivery and abortion of cows, timely feeding of brown sugar, wheat bran soup or amniotic fluid, promote the timely discharge of the placenta. Don't milk at the hottest time in the noon. Use warm water to scrub the breasts before milking. After milking, use 0.1% potassium permanganate to reduce the incidence of mastitis. (Zhang Wei Zhang Yan)
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