News briefing： explored and summarized the experience of breeding management, selection and matching, feeding and fattening, and disease prevention and control, which can be summarized as "management, selection, matching, breeding, and prevention"
In the long-term production junior high school, we have continuously explored and summarized the experience of breeding management, selection and matching, feeding and fattening, and disease prevention and control, which can be summarized as "management, selection, matching, breeding, and prevention".
Pipe is a scientific method of feeding and management. Most sheep farmers with better economic benefits adopt sheds to raise their sheep, and use forage and fodder to feed the sheds. This method can save pastoral workers and increase technical efforts. The combination of grazing and supplementary feeding is adopted. In addition to grazing during the green grass season, one is to plant a large amount of high-quality forages such as alfalfa; the other is to store and silage straw in large quantities; and the third is to strengthen the supplementary feeding of lambs and field sheep. Use flexible grazing methods. One is to graze in groups. The flocks are divided into small groups according to age, sex, and size. The number of each group ranges from 50 to 100. The fattening sheep and the bred sheep are grazing in groups during the green grass period, and breeding ewes and sheep The breeding rams graze locally; second, according to the feeding characteristics of the sheep, the method of replaying the pasturing in slices is adopted, that is, after the grazing every day, let the sheep graze in the past grazing place, and then arrive when the sheep is half full. Graze on the fresh pasture, let go when you see the sheep are not eating too much, and use the "gypsophila" method to let the sheep eat until they are full. This kind of "Mr. mature later, tight first and then loose, three full a day" is combined with two seasons slow (grazing slowly in spring and autumn) and three persistence (persist on grazing with the group, go out early and return late, drink twice) and three stable ( The methods of grazing, drinking water, and entering and exiting must be stable) and the four preventions (prevention of running green, prevention of nesting, prevention of damage and prevention of disease) are conducive to the increase of fat and childcare of the grazing sheep.
Choose to optimize the herd structure. By keeping the good and eliminating the bad, we will eliminate the old sheep and sheep with poor production performance year by year, choose multiple times, cultivating them in stages, and adhere to the principle of gradual and orderly progress according to the time (time) and market (market conditions). The group structure is continuously optimized, and the economic benefits are continuously improved. Because each household has different breeds, numbers, and developments, the selection methods are different, and the selection ratios are also different. But we must pay attention to the three stages of birth, weaning, and one year old, and the progress of multiple links in reproductive performance and offspring growth rate. The selection ratio of ewes is: the elimination rate is 15%-20%, and the selection retention rate is 35%-40%. Rams are introduced into Suffolk, Dorset, Boer goats, small-tailed Han sheep and other fine breeds according to the actual situation, and they are generally not bred by themselves. After constant selection, the age structure of young sheep (0.5 years-1.5 years) accounted for 15%-20%, and mature sheep (1.5 years old-4 years old (65%-75%, 5 years old) Half of it accounts for 10%-20%. The proportion of ewes reaches 65%-70%, of which 45%-50% can reproduce ewes. The larger the proportion of ewes, the higher the slaughter rate and the better the economic benefits.
Matching means selection and breeding methods. It is through the reasonable selection of individual male and female spouses and scientific breeding methods to achieve the purpose of having the best and full mating. It can not only make full and effective use of superior rams, but also artificially control the lambing season and breeding frequency. The estrus control technology such as estrus at the same time can also be used to make the ewes concentrate on estrus in a short time, and the conception rate and the mating rate are higher, so that the right-age ewes are fully matched and the quality of the lamb is also improved.
Breeding refers to measures for raising sheep. In the late pregnancy and early breastfeeding period, the ewes should be given reasonable supplementary feeding, while doing a good job in drinking water, salt supplementation and shed hygiene. The feed varies according to the pasture, season, and ewe conditions. The concentrate composition is 51% corn, 8% bran, 23% cakes, 10% alfalfa meal, 3% bone meal, 2% salt, and 3% calcium hydrogen phosphate. , Supplement is generally 0.5kg-0. 7kg per day per day, divided into two supplementary feeding morning and evening, and give an appropriate amount of high-quality forage. Carefully observe the condition of the ewes before giving birth, and have a dedicated person on duty at night to pick them up with delivery. After the lamb is born, strengthen the cultivation to ensure the breastfeeding of the multiple birth lamb. Lambs are given high-quality forage and compound feed from 10 to 14 days after birth. The feed and quantity of feed depends on the place and the sheep. The compound feed for most lambs is: 50g-70g per day for two weeks of age, 1 month of age. -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 composition is corn 40%, cake 25%, alfalfa forage 25%, bran 8%, bone meal 2%, and salt.
Prevention is the prevention of disease. In addition to routine vaccine injections, a medicated bath is carried out after shearing, and insect killers are used for deworming in spring and autumn every year. At the same time, sprinkle plant ash and other disinfection at the entrance of the activity place to isolate and treat abnormal or diseased sheep to reduce morbidity and mortality.
