In the long-term production junior high school, we continue to explore and summarize the experience in breeding, management, seed selection, feeding, and epidemic prevention, and summarize it as the words “pipe, election, match, education, defenseâ€. The tube is the scientific feeding and management method. The economically beneficial sheep-raising households mostly use house-raising sheep and rationally use forage grass and fodder for feeding. This method can save the grazing and increase technical efforts. The combination of grazing and replenishing, in addition to grasping grass grazing, first, a large number of high-quality grass and other forage grass; the second is a large number of reserves and silage straw, etc.; third is to strengthen lamb and Tianyang feeding. Adopting a flexible grazing method, first, group grazing, divide the flock into groups according to age, sex, and size, and the number of each group varies from 50 to 100. Fattening sheep and bred sheep grass group grazing, breeding ewes and The rams grazing in the local area; second, according to the characteristics of the sheep's feeding, the method of retrieving the grazing on the slicing wheel is to let the sheep grazing in the past grazing after daily grazing; when the sheep eats half-full, then Graze grass on fresh pastures and wait until the sheep are not eating. Then let go and use the “starry sky†method to allow the sheep to eat. This kind of "Mr. after-ripening, first tight and then loose, three-day-a-day fullness" combined with two slow seasons (slower spring and autumn grazing) and three persistence (sticking to herd grazing, early and late return, and second drinking) and Sansei ( Grazing, drinking water, and stabilizing) and four defenses (protection against run-green, barrages, damage prevention, and disease prevention) are conducive to grazing herding and breeding herd.
Select the optimal herd structure. Through good and bad, the old sheep and the sheep with poor production performance are eliminated in a timely manner year after year. Several choices are made and the classification is divided into sub-cultivations. The principles of time (time), city (market conditions) and gradual progress are adhered to. The group structure has been continuously optimized and the economic benefits have been continuously improved. Because each household has different breeds, different amounts, and different developments, the selection method is different, and the selection ratio is also different. However, we must pay attention to the three stages of birth, weaning, and age, as well as reproductive performance and the growth rate of offspring. The proportion of ewes selected is: elimination rate of 15%-20%, retention rate of 35%-40%. Rams introduced Suffolk, Dorset, Boer goats, Small Tail Han sheep and other fine varieties according to the situation, and generally do not choose their own breeding. After continuous selection, its age structure is maintained at 15%-20% of young sheep (0.5 years old to 1.5 years old), and high-grade sheep (1.5 years to 4 years old (65%-75%, 5 years old). Half accounted for 10%-20% of the proportion of the proportion of ewe reached 65% -70%, of which 45% -50% can fertile ewes, the greater the proportion of ewe, the higher the rate of slaughter, the better the economic benefits.
Matching and matching methods. It is through the reasonable choice of individual male and female mate partners and the use of scientific breeding methods to achieve the goal of superior matching and full deployment. The rams can be fully and effectively utilized, and the lambing season and frequency of breeding can be artificially controlled. Ectopic control techniques such as estrus can also be used in the same period to allow the ewes to focus on estrus in a timely manner. Breeding in a shorter period of time, the conception rate and the rate of acceptance are higher, so that the ewes of the appropriate age will be fully equipped, and the quality of the lambs will also be improved.
Education is the cultivation of sheep. In the late gestation period and pre-lactation period, the ewes should be given reasonable supplements, while drinking water, salt and sanitation should be well maintained. According to local conditions of pasture and season, and ewes, the feed composition consists of 51% corn, 8% bran, 23% cake, 10% alfalfa meal, 3% bone meal, 2% salt, 3% dibasic calcium phosphate. The amount of supplement is generally 0.5kg-0.7kg per day, supplemented twice a day sooner or later, and given an appropriate amount of quality forage. Observe the status of the ewe carefully before going to work, and special personnel are on duty in the evening. After the lamb is born, strengthen the cultivation to ensure the breast-feeding of multiple lambs. 10 to 14 days after the lambs are born, quality forage and compound feeds are started. Feeds are supplemented and the quantity is determined according to the sheep. Most of the supplements for lambs are 50g-70g and 1 month old. - 2 months old 100g-150g, 2 months old - 3 months old 200g, 3 months old - 4 months old 250g, 4 months old - 6 months old 300g - 500g. The concentrate consists of 40% corn, 25% cake, 25% alfalfa, 8% bran, 2% bone meal, and salt.
Prevention is prevention of disease. In addition to routine vaccination, medicinal baths are performed after shearing, and insects are killed every spring and autumn. At the same time, in front of the sheds in the active venues, it is sterilized with vegetation and wood ash, and the abnormal or diseased sheep are treated with isolation to reduce morbidity and mortality.