优质种公羊改良当地寒蒙羊效果

Improved Effects of High-Quality Rams Crossed with Local Han and Mongolian Sheep

以陶赛特、萨福克、特克赛尔外种羊为父本,本地寒蒙羊为母本组成实验组与对照组寒蒙羊进行杂交改良实验,并对杂交F1代羔羊的生长性能和屠宰性能进行分析。观测表明,实验组之间繁活率、各生长阶段体重、屠宰率无明显差异,与对照组比较,繁活率均低于对照组,差异显著(P<0.05);各生长阶段体重及6月龄胴体重和屠宰率都显著高于寒蒙羊(P<0.05);杂交羊胴体重平均比寒蒙羊高出5.6kg,新增纯收益246.4元,经济效益显著。

The trial groups are constitute with male parent （Dorset, Suffolk, Texel and other foreign sheep） and female parent （the local Han and Mongolian sheep） ,the local Han and Mongolian sheep as the control group in the hybrid improve- ment experiment. Analysing the growth and slaughter performance of the F1 hybridized lambs. The results showed that the rate of survival and slaughter , weight in all stages were not significant among the trial groups. In addition,the rate of survival were significantly lower than the control （P〈0.05）;the weight in every stage and carcass weight of 6 month old, slaughter rate were significantly higher than the local Han and Mongolian sheep （P〈0. 05）. The carcass weight of the hybrid sheep was 5.6kg higher than that of the local Han and Mongolian sheep, and the net income was 246.4 yuan, obviously, the economic benefit was significant （P〈0.05）.