肉羊生产配套技术研究报告

The Comprehensive Techniques in Mutton Sheep production

探索能扎根农牧区的利用肉羊杂种优势的综合配套技术新途径。通过杂交、育肥、羊群结构等多方面的比较试验，结果：用夏洛来公羊与当地母羊杂交一次（人工授精，东部农业区宜于８～９月，环湖牧区１１月），羔羊生后随母羊放牧、放牧＋补饲和全舍饲育肥１６０～２１５天，６～７．５月龄时活重２７．４６～３２．１７ｋｇ，胴体重１１．６７～１５．９７ｋｇ，比放牧饲养的同龄羔羊胸体重增加２．７５～７．１７ｋｇ，经济效益提高３０．８３％～８１．４８％；杂种羔羊９月份体重最高，适宜的屠宰时间是９月底或１０月初和每年的２～３月份；肉羊生产的优化羊群结构：成年母羊占存栏羊６０％以上，公羊占３％～４％，每年补充小母羊２０％以上。试验结果证明：以夏洛来羊杂交组合为主的肉羊生产综合配套技术，在我省东部农业区和环湖牧区是可行的，为提高羊肉产量和质量，增加农牧民收入开辟了新途径，经济、社会和生态效益显著。

Acomprehensive experiment including cross, fattening and readjustment ofpopulation structure was conducted to probe a new way in mutton sheep production. The lo-cal ewe were used to cross with Charollai ram , the young crossbreds were grazed(controlgroup)and fed in shelter house or given supplemental feed in the base of day-grazing(experi-ment group). The live weight and the carcass weight of 6～7. 5 months old lambs in experiment group were 27. 46～32. 17 and 11. 67～15. 97kg respectively ,the latter was 2. 75～7. 15kg higher than that of the animals in control group,and the economic results increasedby 30. 83%～81. 48%、The live weight of the crossbred lamb tops in Sep. It was suggestedthat the lambs be slaughtered in late Sep to early Oct,or in late Feb. to early Mar,in the nextyear, and that the population structure be : adult ewe 60%, ram 3%～4%, ewe lamb above20%.