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Feeding Management Technology of Goat Spring Lamb in Winter
The goat lamb is slaughtered in winter, which not only eases the contradiction between livestock and livestock in winter, but also accelerates the turnover of herds and funds. The cost is low and the income is fast. The lamb is used in early growth and feeds are paid high. The scientific fattening technology was used to produce the current year's slaughter. Will greatly increase. Practice has proved that the breeding of goat spring lambs in winter should focus on the following technologies: (1) Economic hybrids. Through hybridization, the lamb's productivity can be improved. The cross-breeding fathers chose varieties with large individuals, fast growth and outstanding meat performance, and the female parents selected varieties with early maturity, high reproductive rate, strong maternality, and adaptability to local ecological conditions. (b) Implementation of estrus in the same period. At the same time, estrus is conducive to fattening lambs, making full use of excellent rams, saving labor, and facilitating feeding and management. All regions should determine the heat seasoning season based on the climate and grassland characteristics. The methods of administering estrus at the same time include: (1) 150 to 300 mg of estrogen progesterone, 50 to 70 mg of medroxyprogesterone, 80 to 100 mg of methotrexate, and 20 to 40 mg of fluroginone are used as suspensions. Sponge leaching a certain liquid, stuffed into the vagina deep in the ewes, usually taken after 14 to 16 days, remove the day of intramuscular injection of pregnant sera gestation hormone (pmsg, the same below) 400 to 750 units, 2 to 3 days later The majority of the ewes treated were estrus, and each insemination was performed on the day of estrus and on the second day. (2) A certain amount of drug is uniformly mixed in the feed daily for 12 to 14 days, and the last one day is intramuscularly injected with pmsg 400 to 750 units. (c) Lambs are weaned early. The traditional weaning date of the lamb is 12 to 18 weeks old and 6 weeks old. The use of compound feeds supplemented with whole grains as the main ingredient, utilizing the characteristics of the ruminant microflora of the lambs that are not yet healthy, low loss of glycolysis of nutrient components, and high feed conversion rates, will capture the favorable opportunity for early growth and development of weaning lambs. Intensity fattening. (d) Feeding bioactive substances. Commonly used are: (1) Monensin. Monensin can increase the conversion rate of feed and maintain the rate of weight gain under the condition of reducing feed intake. (2) meat growth hormone. Stimulating the physiological activities of the pancreas and adrenal glands can promote the synthesis of proteins and speed up the weight gain of lambs. Lambs can be implanted from the 4th to the 7th day of age. Each time the effective period of the meat is 60 days, the plant will be buried for 65 days before slaughter. Lambs are planted with meat growth hormone and their weight gain rate can be increased by 10% to 24%. (3) Ammonia enzyme. For the lactating lamb, 5 mg of ammonia enzyme per kilogram of body weight was injected every other day. After 15 weeks of age, the fat content in the muscles of the lambs was reduced by about 15% compared with that of the uninjected lambs, and the weight gain was not reduced. (4) Sodium bicarbonate. The addition of 2% sodium bicarbonate can improve rumen digestibility of protein, crude fiber, and starch, and accelerate lamb weight gain. (e) Scientific feeding and management. (1) Maintain a reasonable level of nutrition. Grazing Attention should be paid to selecting the places where the pastures are green and dense with bushes, ensuring adequate grazing time, and selecting different concentrates for feeding according to different growth stages. Before 4 months of age, it grows fast and needs to be supplemented with high protein content concentrates. After 4 months of age, the accumulation of fat in the body is increased, and high-energy feeds should be added. The proportion of crude coarse material in the diet should be 20:80 or 25:75. (2) Strengthen comprehensive prevention and treatment of diseases. The common diseases of Chun lamb are infectious impetigo, contagious conjunctivitis, keratitis, gastroenteritis syndrome, parasitic diseases, etc. According to the local epidemic situation, regular injection of vaccines, unified deworming, keeping the barracks warm, dry, Ventilation is good and the pens are regularly sterilized. Early isolation and early treatment were found to effectively control the occurrence of epidemics, improve the effect of fattening, and increase the efficiency of raising sheep.