Dairy cow feeding measures during lactation
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I. Induced feeding method Starting from the first two weeks before the calving of the cow, on the basis of feeding during the dry period, a certain amount of concentrate is fed daily, that is, about 1.8 kg of concentrate is fed on the first day and is increased by 0.4 each day thereafter. Kilograms until an average of 1-1.5 kilograms of mixed concentrate is consumed per 100 kilograms of body weight. 550 kilograms of cows; up to 5.5-9 kilograms of concentrate per day. Two weeks were fed 60-70 kg. After the calf has been calving, in order to obtain more nutrition, the feed volume of the concentrate will continue to increase to 0.45 kilograms per day, which will increase until the peak of milk production or reach the free intake. And give enough water to reduce cow's digestive system disease. This method is limited to high-yielding dairy cows, which can lead to over-production of low-yielding cows. Second, the challenge of feeding law Before entering the dry milk period, the cow must maintain a good nutritional status. After entering the dry period, basically feeding only 0.45 kg of concentrated material on the basis of feeding only high quality coarse material. One week later, it was used as a concentrate, but the maximum daily feed should not exceed 15 kg. And it is limited to high-energy feeds about 12 weeks ago. Afterwards, feed should be formulated according to maintenance needs and normal production requirements. Third, replacement feeding method changes the composition of diet every 7-10 days, mainly to adjust the ratio of concentrate and forage, but the total dietary nutrition is unchanged. For example, starting from 20 days after the cow is born, 8 kg of hay, 10 kg of silage, and 7 kg of concentrate are given daily. After one week of feeding, the concentrate was reduced to 3 kg, hay was increased to 11 kg, silage was increased to 30 kg, and milk production was not decreased. After continuing for a week, the concentrate will be reduced to 4-5 kg, the hay will be increased to 14 kg, and the juicy material will be increased to 40 kg. When the milk production does not drop, the concentrate will be increased to 11-13 kg within next week. Milk production can continue to rise.