Autumn and winter management of high-yielding dairy goats

1. Preparation before mating, (1) High-yielding ewes produce more than 12 kilograms of milk per day during the peak period, reach 5 kilograms of milk per day during the breeding period in August, and reach 2-3 kilograms during the estrus period. Ingredients, especially for lean sheep, are added at least 1 kilogram to 2 kilograms per day. (2) Quarantine for diseases: Brucellosis and tuberculosis in dairy goats can be transmitted to large feces through milk. Therefore, quarantined sheep need to be quarantined, and sheep with infectious diseases should be eliminated. (3) Do a good job of deworming: The internal parasites are all contagious. A thorough examination should be performed two weeks before the breeding. You can use oral albendazole, 25 mg/kg body weight, and you can also choose levoflozole hydrochloride tablets, 30 kg/kg body weight. Mg, once orally taken, to drive off the lung knotworm, lung fluke, nematode, or kill with 100 insects, 1% avermectin injection. (4) Do a good job of vaccination. Not only must the quarantine of brucellosis and tuberculosis be ensured, but also the health of the ewes and the lambs they produce must be guaranteed. Injecting anaerobic bacteria to 5 joints, 5 ml per sheep, immunize for one year, so that the lambs are also sufficiently specific Antibody protection. 2. Grasp the timing of mating: (1) Physiological characteristics: Dairy goats are estrus in the season, and each autumn begins in the summer season and continues until the end of the winter. The lamb will be produced in the spring of the following year. The pregnancy period will be 150 days, the milk production period will be 10 months, and the dry period will be 2 months. High-yielding dairy sheep have decreased milk production during the first trimester of pregnancy and dry milk during the latter period. (2) Oestrus traits: The lambs produced during the current year have a sexual maturity of 5-8 months and a weight of 30-40 kg. The estrus cycle is 18-24 days and the estrus duration is 24-48 hours. The estrus manifests itself as: Excitement, excitement, incendiary, non-stop singing, and no diet. The pudendal area is swollen, flushed, with viscous secretions, and it is strongly waving its tail. It is willing to accept the ram's climb. (3) Timely mating: Ovulation starts 10 hours after oestrus, and ovulation period is 30 hours to 40 hours. The time for the egg to maintain fertilization is 12-24 hours. The fertilization capacity of ram sperm in the ewe's reproductive tract is 24 hours. ~ 48 hours, so fertilization in the ewes 24 hours after the estrus period is the most appropriate, in order to ensure the conception rate, can be allocated from 6 hours to 12 hours. (4) do a good job in the second season of mating; milk goat each autumn estrus, the first estrus called the first love period. If you are not fit, you will be empty for one year, but if you are not conceived, you will be estrus again in 18-24 days. This is called the second estrus period. The rate of pregnancy in the first period of the previous year was about 80%, and it was dragged to the second period of mating, and rarely in the third situation. 3. Pregnancy Management: Pregnancy Ewes are stable, appetite is normal, and dietary intake increases daily. Nutrition needs to be adequately supplied, adding green feed. Do not feed on rotten spoiled feed. Don't beat, hurry, run fleas, prevent mechanical abortion, and don't use drugs, especially hormone drugs. 4. Good management during pregnancy: High-yielding dairy goats have a slight decrease in milk production within the first 3 months of pregnancy. They should be forced dry milk 2 months after pregnancy to reduce concentrates and drinking water. After 1 week of dry milk, nutrition is increased to allow the fetus to grow normally. 5. Fertility-preventing measures: In addition to artificially delayed breeding, sheep that are not pregnant during the first period of love should be carefully inspected to find out the reasons and take appropriate measures to assist them. If you have metritis need to wash with penicillin plus PP solution. Estrus should not be injected with estrogen, or aphrodisiac tablets, and carrots and fat-soluble vitamins and green forage grass, winter grazing 70 ryegrass, valerian, etc., to promote the generation and division of egg cells. 6. The management of rams: According to the “Regulations for the Management of Breeding Livestock (Poultry)” issued by the State Council, the quarantine of the disease, the check of the body condition, and the appraisal of the species traits shall be done. For the epidemic-eating sheep, fine feed and vitamin feeds should be added, such as carrots, winter grazing, 70 black pastures, strengthening exercise, enhancing physical fitness, increasing sexual desire, and promoting sperm cell maturation. China Agricultural Network Editor