不同杂交组合后代羔羊的生长发育和屠宰性能比较

为了研究杜泊羊和德国肉用美利奴羊与乌珠穆沁羊杂交产生的杂交后代的生产性能,在相同饲养环境下,试验分别选择同年龄的杜泊公羊、德国肉用美奴公羊与乌珠穆沁母羊杂交,对杜×乌组合、德×乌组合与乌×乌组合的后代(F1)羔羊的生长发育和屠宰性能进行了比较研究。结果表明,杜×乌组合、德×乌组合F1代羔羊的初生体重、1月龄体重、3月龄体重和6月龄体重均显著高于乌×乌组合的后代(F1)羔羊同月龄体重(P<0.05);杜×乌组合F1代羔羊的初生重、1月龄体重、3月龄体重均显著高于德×乌组合,但6月龄体重两组合差异不显著。屠宰性能结果表明,杜×乌组合、德×乌组合F1代羔羊在宰前活重、胴体重和净肉重均显著高于乌×乌组合(P<0.05);胴体率和净肉率各组间差异不显著。由该试验可以得出,杜泊公羊和德国肉用美利奴公羊与乌珠穆沁母羊杂交产生的杂交后代均表现出良好的杂种优势,二者均可作为优秀的良种公畜杂交改良内蒙古锡林郭勒盟当地羊,以提高杂交羊的产肉量,增加农牧民收入,助力当地畜牧业高质量发展。

A Comparative Analysis of Growth and Slaughter Performance of Different Hybridized Sheep

Crossbred experiment was conducted by using Dorper sheep(paternal form),German Mutton Merino sheep(paternal form)and Ujumuqin sheep(maternal form)with same age and rearing condition to analyze the growth and slaughter performance of the crossbred F1 generation of lamb(Dorper×Ujumuqin,Merino×Ujumuqin and Ujumuqin×Ujumuqin).The results showed that the born weight,1-month age weight,3-month age weight and 6-month age weight of the F1 lamb of Dorper×Ujumuqin and Merino×Ujumuqin were significantly higher than Ujumuqin×Ujumuqin F1 lamb(P<0.05);while the born weight,1-month age weight and 3-month age weight of the F1 lamb of Dorper×Ujumuqin were significantly higher than Merino×Ujumuqin F1 lamb(P<0.05),no significant difference in 6-month age weight between Dorper×Ujumuqin and Merino×Ujumuqin was observed;the pre-slaughter empty body weight,carcass weight and pure meat weight of F1 hybrids of Dorper×Ujumuqin and Merino×Ujumuqin were significantly higher than F1 lamb of Ujumuqin×Ujumuqin(P<0.05);there were no significant differences in slaughtering percentage and pure meat percentage among three crossbred combinations.The combined data suggest that the growth and slaughter performance of F1 generations of hybrid lamb can be significantly improved,and the Dorper sheep and German Mutton Merino sheep can be used as paternal form to improve the local breeds of sheep in Xilin Gol League of Inner Mongolia.Furthermore,this breed improvement strategy also provides an important basis for the high-quality development of local animal husbandry.