哈萨克羊及其不同杂交组合生长性能和产肉性能比较

Comparative of Growth Performance and Meat Production Performance of Kazak Sheep and its Different Hybrid Combinations

该试验选用杜泊种公羊、萨福克种公羊、哈萨克种公羊各4只与哈萨克母羊180只分别进行二元杂交和纯繁,哈萨克母羊随机分为3组,每组3个重复,每个重复20只,分别为试验I组萨福克羊(父)×哈萨克羊(母)(萨哈F1),试验II组杜泊羊(父)×哈萨克羊(母)(杜哈F1),哈萨克羊纯繁组为对照组(哈哈F1),测定杜哈F1、萨哈F1和哈萨克羊纯种后代的生长性能及6月龄屠宰性能。结果显示,萨哈F1代肉羊初生重与杜哈F1代差异不显著(P>0.05),但极显著高于哈哈F1代肉羊(P<0.01)。萨哈F1代和杜哈F1代肉羊4、6月龄体重、0~6月龄日增重极显著高于哈哈F1代肉羊(P<0.01)。杜哈F1代和萨哈F1代肉羊宰前活重、胴体重、净肉重、屠宰率、净肉率极显著高于哈哈F1代肉羊(P<0.01),杜哈F1代肉羊宰前活重、胴体重、净肉重、屠宰率、净肉率显著高于萨哈F1代肉羊(P<0.05)。在仅考虑饲料成本、医药费条件下,试验组萨哈F1代、杜哈F1的收益均高于哈哈F1代肉羊,且以试验组杜哈F1代肉羊平均收益最高,为368.79元,萨哈F1代肉羊次之。可见,杜哈杂交F1代羔羊的生产性能和屠宰性能较高,杂交优势明显。

In this experiment,four Dorper rams,four Suffolk rams,four Kazakh rams,and 180 Kazakh ewes were selected for binary hybridization and pure breeding.Kazakh ewes were randomly divided into three groups with three replicates in each group and 20 replicates in each group.The experimental group I was Suffolk sheep(father)×Kazakh sheep(mother)(Saha F1),the experimental group II was Dorper sheep(father)×Kazakh sheep(mother)(Duha F1),and the Kazakh sheep pure breeding group was the control group(Haha F1).The growth performance and slaughter performance of the pure offspring of Duha F1,Saha F1,and Kazakh sheep at 6 months of age were determined.The results showed that there was no significant difference in birth weight between the Saha F1 generation and Duha F1 generation(P>0.05),but it was significantly greater than that of the Haha F1 generation(P<0.01).The body weight at 4,6 months of age and daily gain at 6-month-old of Sakha F1 and Duha F1 were significantly greater than those of Haha F1(P<0.01).The pre-slaughter live weight,carcass weight,net meat weight,slaughter rate and net meat rate of Duha F1 and Saha F1 mutton sheep were significantly greater than those of Haha F1 mutton sheep(P<0.01).The pre-slaughter live weight,carcass weight,net meat weight,slaughter rate and net meat rate of Duha F1 mutton sheep were significantly greater than those of Saha F1 mutton sheep(P<0.05).Under the condition of only considering feed cost and medical cost,the income of Sakha F1 and Duha F1 in the experimental group was higher than that of Haha F1,and the average income of Duha F1 in the experimental group was the highest,which was 368.79 yuan,followed by Sakha F1.It can be seen that the production performance and slaughter performance of Duha hybrid F1 lambs are higher,and the hybrid advantage is obvious.