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Feeding and management of calves after weaning


1. Strengthen breeding. After weaning, the calves continue to be fed with pre-weaning concentrate and roughage. As the age of the month increases, gradually increase the amount of concentrate feed. At the age of 3 to 4 months, the amount of concentrated feed is increased to 1.5 to 2.0 kg per day, and high-quality hay is selected for free intake of calves. Before 4 months of age, try to feed less or no green juicy feed and silage. After 4 months of age, they can be fed with concentrated feed for growing cattle. The growth rate of a female calf is more than 650 grams of daily weight gain, a weight of 110 kg at the age of 4 months, and a weight of 170 kg at the age of 6 months. Many calves have low daily gain within 1 to 2 weeks after weaning, and they also show symptoms such as weight loss, messy coat, and lack of luster. This is mainly caused by weaning stress. Don't worry, as the calves adapt to the whole plant feed Later, feed intake increases and will soon recover.
2. Fine management. After weaning, the calves need to be carefully managed when they are just weaned, and the requirements for management are relatively reduced in the future. After weaning, female calves need to be grouped together if they were raised in single pens, and grouped if they are mixed. Reasonable grouping can facilitate breeding, and at the same time avoid large differences between individuals causing uneven feeding. The principles of grouping and grouping are the same, that is, calves of similar age and weight are divided into groups of 10-15 calves. Calves are generally raised freely, free to eat, and free to drink, but the water quality and feed should be fresh, clean and hygienic. Pay attention to keeping the cowshed clean, dry, and regularly disinfected. Calves should spend no less than 2 hours of outdoor exercise every day, but avoid the strong sun at noon in summer and cold weather in winter. It is best to exercise outdoors when the noon is warmer. The calves are weighed monthly and recorded, and the cause of slow growth should be found. At the same time, the body size is measured regularly, and the growth and development of the calves are evaluated according to the body size and weight. At present, studies have shown that body height to body weight has a greater impact on the initial milk production of reserve cows. The ideal body height of Holstein female calves is 92 cm at the age of 3 months and 102 cm to 105 cm at the age of 6 months.

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