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Second, mating season management
1, group breeding. Separate young ewes from adult ewes as much as possible. Arrange 1 ram for every 20-25 ewes.
2, a 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. Then, at 48 hours, 60 hours and 72 hours, 0.25 ml of 0.5 ml of pregnant horse serum gonadotropin was injected. Ewes that are inseminated on the same day usually lay lambs within 5 days to 7 days, so 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.
3. Maintain the same feeding and management level in the first month after breeding and breeding to prevent miscarriage. 40 days after mating, ultrasound was used for pregnancy diagnosis. Either mark the insemination ewes and put them together with the trial rams 14 days later to observe the returning ewes and to determine if they are pregnant.
IV. Management before lambing Anti-uterine necrosis vaccine is administered 2 months to 3 months before lambing. Symptoms of the disease are severe uterine uterus inflammation, and die within 3 days of lambing. Take anti-TB drugs 1 month before delivery to prevent breast infection. In the last 3 weeks of pregnancy, in order to ensure the growth of the fetus, the ewes should be supplemented with nutrients and supplemented with pre-vitamin A, vitamin D, and vitamin E. Since the average lambing rate of Boer goats is 180 %, there are many cases of third births. Supplementing nutrition can make lambs robust, which is particularly beneficial for maintaining the viability of multiple children.
V. Management of lambs Lambs are prone to diarrhoea due to overdose of milk, and they begin to infect aphids, contagious pustular dermatitis and brucellosis, and should be treated for prevention and symptomatic treatment. Commodity Boer goats should be castrated within 2-4 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 and 4.5 months of age.
Breeding breeding of cattle
First, the management of the breeding before the month before the ewes in the growth state, 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 with endemic abortion vaccine.