欧拉羊杂交改良乔科羊后代各年龄段生长速度分析

Analysis of Growth Speed of Offspring from Oula Crossbreeding Qiaoke Sheep

对欧拉羊与乔科羊杂交试验组和乔科羊本交对照组所产的后代进行了初生、3月龄、6月龄、12月龄、18月龄的体重跟踪测定和差异显著性检验。结果表明,欧乔杂交F1代公、母羊初生-3月龄,3-6月龄,6-12月龄日增重分别比同期对照组后代日增重均快,而12-18月龄日增重比同期对照组后代日增重慢,差异极显著（P（0.01）。说明欧乔杂交后代的生长速度在初生至12月龄明显比对照组快,而12-18月龄却比对照组慢,适宜羔羊肉生产。

By measuring the generations of the Oula Tibetan and Qiao-Family Tibetan＇s body weight in boring,3^rd,month,6^th month and 12^th month,and using t-test analysis,the results showed that daily weight gain of the ram lamb and ewe lamb of Oula-Qiao-Family F1 were higher than control group from birth to 3^rd month,3^rd month to 6^th month,6^th to 12^th month,respectively.However,the daily weight gain from 12^th to 18^th month was significantly lower than control group（P〈0.01）.This showed that growth speed of the crossbreeding generation is faster than control group from birth to 12^th month old,however,it is slower from 12^th month to 18^th month old than control group,it is suitable for lamb producing.