High-yielding feeding method for dairy cows in early summer
In early summer, the environment of high temperature and high humidity is extremely sensitive to dairy cows. When the average temperature exceeds the critical temperature of 24°C on that day, the milk yield of dairy cows begins to decline. To achieve high-yield and stable production of dairy cows in high-temperature and high-humidity seasons, the following special management measures should be strengthened: 1. Adjust the dietary ingredients. Feed high-quality dairy cows with high-quality forage and feed more concentrates or high-fat substances to increase the energy of the diet. Beans, cottonseeds, and animal fats can be used. The amount of supplement is 1% to 1.5%. In the full-price diet, it is necessary to increase the protein level by 1%-2% so that the protein content is within 19%, and the crude fiber content should not be excessive, especially for silage. Practice has shown that dairy cows with a milk yield of more than 32 kilograms should be kept at a best level of 17-22 kilograms per day for feeding silage in summer. Second, increase milk drinks. Motivate dairy cows to prepare well-balanced, nutrient-rich beverages and promote the appetite of dairy cows. Practice has shown that: The proportion of 140 kg of feed added to 600 kg of water per day is boiled into a thin porridge-like beverage plus 9 kg of brown sugar. The beverage is poured on the leftovers three times a day, and the remaining ingredients are eaten. Third, strengthen heatstroke prevention facilities. Some sunstroke-preventing cooling facilities may be adopted. The main methods include shading, ventilation, water spraying, and washing of cattle. For example, on the outside, the arbor is blown with a fan, and the cold water is sprayed on the floor, wall, roof, and cattle body. Fourth, change the feeding method. Due to the hot weather, dairy cows have the poorest diet during the day, so you can feed them 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. Fifth, do a good job of disease prevention. In the high-temperature season, it is particularly necessary to remove cowhouse excrement in a timely manner, regularly eliminate mosquitoes and flies, do a good job in environmental sanitation, minimize the occurrence of disease in dairy cows, and 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.