Mutton breeding technology
Pre-male management One month before mating, the ewes are in a state of growth and should not be too fat. Vitamin A, vitamin D, and vitamin E are taken 3 weeks before the start of the breeding period. For the milking ewes, prepare a small tent for salt, supplement a small amount of corn every day. 2 months to 3 weeks before mating into the trial ram, 1 month to 2 months before inoculation, inoculation of endemic abortion vaccine. Seasonal management 1. Group breeding. Separate young ewes from adult ewes as much as possible. Arrange 1 ram for every 20 to 25 ewes. 2. Single breeding. One ram per 30 ewes. In both cases, the rams should be kept in a small shade shed for a small amount of feeding. Leave the ewes at night and put them in rams. 3. Artificial insemination. Vaginal sponge plugs were placed on the first day of the estrous cycle and sponge plugs were removed on the 14th day of the cycle. Thereafter, 0.25 ml to 0.5 ml of maternal serum gonadotropin was injected at 48 hours, 60 hours, and 72 hours. Ewes who are inseminated on the same day usually lay lambs within 5 days to 7 days. Therefore, they should be arranged during artificial insemination. Avoid over-eating estrus at the same time, so as not to cause trouble in a bad weather. In the case of artificial insemination, there must be measures to prevent heat and keep the ewes as quiet as possible. After artificial insemination, the trial ram or young ram is placed in a fence separated from the ewes, and the pre-insemination nutritional level is maintained. Post-breeding management Maintain the same feeding and management level in the first month after breeding to prevent miscarriage. 40 days after mating, ultrasound was used for pregnancy diagnosis. Or mark the insemination ewes and put them together with the trial rams 14 days later to observe the returning ewes and determine whether they are pregnant. Lamb Management Anti-uterine necrosis vaccine was given 2 months to 3 months before lambing. Symptoms of the disease are severe uterine uterus inflammation and die shortly after lambing for three days. One month before delivery, take anti-TB drugs to prevent breast infection. In the last 3 weeks of gestation, in order to ensure the growth of the fetus, the ewes should be supplemented with nutrients, supplemented with vitamin A, vitamin D, and vitamin E just as they were before mating. Since the average lambing rate of the Boer goats is 180%, there will be many cases of three children. The supplement of nutrients will make the lambs robust, which is particularly beneficial for maintaining the viability of multiple children. Lamb Management Lambs are prone to diarrhoea due to overdose and begin to infect aphids, contagious pustular dermatitis, and brucellosis. Prevention and symptomatic treatment should be performed. Commodity Boer goats should be castrated within 2 weeks to 4 weeks postpartum. Male lambs were weaned at 3 months and 3.5 months of age, and female lambs and castrated lambs were weaned at 3.5 months to 4.5 months of age.
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