Technical points 1. Rearing bred cattle to green roughage, regular feeding, to ensure high-quality roughage feed freely. According to the quality of roughage supplements concentrate. Pay attention to vitamins and mineral supplements. Keep bovine body moderate sensation, prevent excessive fat or Too thin. From 7 to 12 months of age, roughage accounts for 60% to 70% of dry matter in the diet, 10 to 15 kg of silage per day per head, 1.5 to 2.0 kg of hay (or straw), and 1.5 to 2.5 kg of concentrate The average daily weight gain is more than 0.7 kg. From 13 to 18 months of age, roughage accounts for 60% to 100% of the dry matter in the diet. Each day, the daily amount of silage is 15 to 20 kg, and hay (or straw) is 2.0 to 2.5 kg. Concentrates 1.0 to 2.0 kg, with an average daily weight gain of 0.5 kg or more. 2. Cultivation (1) Cultivated cattle should be bred with body measurements and body weight as indicators, and timely correct feeding and management inadequacies to maintain balanced development of various parts. To obtain a better body shape. (2) In addition to focusing on body measurements and body weight, bred cattle breeding should also pay attention to estimating heritability from all aspects of ancestors. Individuals that do not meet body appearance criteria should be eliminated in time. Management (1) Breeding cattle press 7-12 months of age and 13-18 months of age group management. Within the group within the age difference within 2 months, weight difference within 50 kg. Reasonable arrangements for feeding, drinking, brushing, cleaning, exercise, rest, etc. In the work schedule, all production operations must be completed at the specified time, and the schedule of work and rest should not be easily changed. (2) The bred cattle are regularly measured and weighed to adjust the inappropriateness of the feeding plan according to the weight and body development. (3) Stick to brushing the body 1 or 2 times a day and drive it for more than 2 hours every day. After 12 months of age, massage the breast once a day, but try to squeeze the nipple. (4) Record the initial period of each cow, Long-term non-estrus cows, please check with the artificial insemination staff and veterinarians, timely diagnosis and treatment. To 16 to 18 months of age, weighing more than 350 kilograms began to breed, after the transition to the management of early pregnancy cows.
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