新疆规模羊场萨福克与湖羊杂交应用试验

Study on Comparison of Growth and Development in Crossbreeding Offspring between Suffolk and Hu Sheep in Xinjiang Scale Sheep Farm

为建立适应新疆规模化羊场的杂交生产体系,提高种羊利用率及当地绵羊的生产性能,以萨福克羊为父本、湖羊为母本,在规模羊场开展杂交应用试验。以出生日龄相近的萨湖F1为试验组,湖羊羔羊为对照组,测定初生重、2月龄重、4月龄重、6月龄体重、6月龄体尺等生长指标及宰前活重、胴体重、净肉重、屠宰率和净肉率等屠宰性能指标。结果表明,萨湖F1羔羊的2月龄重、4月龄重、6月龄体重及日增重显著高于湖羊F1羔羊(P<0.05),6月龄萨湖F1羔羊平均宰前活重、胴体重、净肉重、屠宰率及净肉率显著高于湖羊F1羔羊(P<0.05)。利用萨福克杂交改良规模羊场湖羊,可以显著提高羔羊的生长发育,杂种优势显著。

In order to establish the breeding and hybridization production system to adapt to the Xinjiang scale sheep farm, improve the production performance of local sheep breed and utilization rate of ram. The hybridization experiment were done by Suffolk sheep crossing Hu sheep in farm. Suffolk×Hu F1 lambs were as the trial group, Hu F1 lambs were as the control group, which had the same age. The growth indicators, such as birth weight, 2-months old body weight, 4-months old body weight, 6-months old body weight and body size, were measured. The slaughter performance indicators, such as body weight, carcass weight, meat weight, slaughter percentage rate and meat percentage rate, were also measured. The results show, under the same raising conditions, 2-months old body weight, 4-months old body weight, 6-months old body weight and average daily gain of SuffolkxHu F1 lambs were significantly higher than Hu F1 lambs （P〈0.05）. The average body weight, carcass weight, meat weight, slaughter percentage rate and meat percentage rate of SuffolkxHu F1 lambs were significantly higher than Hu F1 lambs in 6-months old （P〈0.05）. It was showed that hybridization can significantly improve meat performance, growth and development of Hu lambs by Suffolk sheep in Xinjiang scale sheep farm.