To improve the survival rate of lambs in Small Tail Han sheep

Small Tail Han sheep have the characteristics of large body size, rapid growth and development, early maturation, one lamb and one lamb (average lambing rate 281%). Two or three children in one year, easy to raise, strong adaptability, both meat and skin, suitable for fat lamb production, the skin is suitable for stratified leather fabric and other advantages. Therefore, one of the keys to improving the economic efficiency of Small Tail Han sheep is to increase the survival rate of lambs. For this reason, the author believes that the "four things to do" in the breeding management:

First, the management of good ewe sheep tailed sheep early stage of the early general ewes 6 months of age can be estrus breeding. It is estrus year-round, with the strongest in autumn and spring. The estrus sheep showed redness and swelling of the vulva, and there was mucus outflow from the vulva and cross-reflection. At this time, it is the best "fire" for breeding, and breeding must be done in time. The virgin sheep's estrus was not obvious, and many refused to climb. They refused to climb to stand on Baoding. The estrus cycle is generally 16 days to 21 days with an average of 18 days. Once it is not enough, it can be used for breeding during the estrus period. About 150 days of pregnancy. In the ewes' gestation period, management must be strengthened, mainly by house feeding, supplemented by grazing, or by complete feeding. In the case of house-feeding, in addition to satisfying 2.5 to 3 kilograms of quality fresh grass for gestating ewes each day, it is also necessary to supplement 0.5 kg of mixed concentrates such as corn, bran, and soybean meal with appropriate amounts of minerals and vitamins. In the winter and spring seasons where the quality of hay is lacking, the amount of supplementary feed must be increased to about 0.8 kg. Management must also pay attention to "three stable three defenses": that is, to enter the sheep house should be stable, prevent crowding; grazing should be stable, the mountains should avoid sheep on steep slopes, to prevent scared sprint and climbing ditch, to prevent miscarriage; Drinking water should be stable and prevent falling, so as to avoid miscarriage and stillbirth. In winter, pregnant ewes should be given warm water and can not drink water with ice.

Second, after nursing a lamb to give birth, to the newborn lamb, we must promptly clear the mouth, nose, ear mucus, body mucus so that the ewe clean, when the weather is cold to heat. For newly-born lambs, the confinement person must put his index finger into the lamb's mouth to allow him to suck it and allow the lamb to eat colostrum in time. Colostrum is rich in antibodies, magnesium and other substances, can enhance the lamb's immunity against the disease and promote meconium discharge. If the ewes are overweight, the teat and milk are relatively inadequate, artificial feeding is the best way to feed fresh milk, milk powder, and millet soup into the bottle. About 15 days after birth, most of the lambs have habits of eating soil and eating hair. This period is easy to induce gastrointestinal diseases. Therefore, after the lamb is born, it is necessary to keep the house clean and keep it warm. It is also possible to place food troughs and drinking troughs in the lamb room or delivery room so that the lambs can freely eat and drink, or they can tie the high-quality dried vegetables into small ones for the lambs to play. This not only reduces the amount of lamb eaten by the lambs. Opportunity, but also can allow lambs to eat plant feed as soon as possible to promote rumen development.

3. Lambs are weaned early for lambs and need artificially trained lambs to feed. When the lambs are 10 days to 15 days old, they are fed with fresh grass, leaves or soft and easily digestible hay and leaves to stimulate the digestion of the lambs. The early formation of digestive function and the transition to the self-feeding direction of the lamb. To make lambs eat as soon as possible, corn and bean noodles may be mixed with porridge or fed in water for lambs to be eaten, or the fried condiments may be served in pots for lambs to feed on themselves. After the age of ~30 days, you can eat normally.

Fourth, prevention and treatment of lamb disease Lamb common diseases are iron deficiency, lack of selenium and other nutritional diarrhea and bacterial diarrhea. In this regard, under the guidance of veterinarians, the use of iron-elevating iron preparations and the addition of trace elements such as selenium should be promptly treated with drugs. The pregnant ewes should timely prevent the injection of Lamb Dysentery vaccine in the 20 days to 30 days and 10 days to 20 days before delivery and improve the immunity of the lambs. Within 12 hours after birth, the lamb can be fed with oxytetracycline 150,000 units to 200,000 units, once a day, for 3 consecutive days, with good prevention of dysentery. For the diseased lambs, early detection, early isolation, and early treatment are required. Defecation and bedding should be destroyed. Shelters should be regularly sprayed with lime water or 3% to 5% of Lysol to completely cut off the vector and route of the epidemic, and prevent the occurrence and epidemic of the epidemic.

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