杜泊、无角陶赛特、萨福克羊与湖羊杂交F1代羔羊育肥性能研究

为进一步研究不同肉羊品种与湖羊杂交F₁代羔羊育肥效果，本试验选择国外优良的肉羊品种杜泊羊、无角陶赛特羊和萨福克羊作父本，国内优良地方品种湖羊作母本开展杂交试验研究，所获得的杂交F₁代羔羊在全舍饲条件下进行育肥。测定杂交F₁代羔羊初生重、不同月龄体重和平均日增重等生长性能。结果表明：试验A组（杜泊公羊与湖羊母羊杂交F₁羔羊）、试验B组（无角陶赛特公羊与湖羊母羊杂交F₁羔羊）、试验C组（萨福克公羊与湖羊母羊杂交F₁羔羊）6月龄平均重分别为44.76±3.62 g、 43.65±4.18 g、43.28±3.34 g，均极显著高于对照组D 6月龄平均重36.32±3.86 g，差异极显著(P＜0.01)。试验A组、B组、C组与对照组D相比较，试验A组、B组、C组每只羊的利润较对照组分别多收入80.02元、69.74、42.74元，差异极显著（P＜0.01），其中试验A组的生长性能和利润均优于试验B组和C组，差异显著(P＜0.05)。

Study on Fattening Performance of F1 Lambs from Dorper, Poll Dorset and Suffolk Sheep Crossing with Hu sheep

In order to further study the crossbreeding effect of F₁ Lambs from different mutton breeds introduced from abroad as the sire crossing with Hu sheep on fattening performance, the experiment was conducted using hybrid lambs from excellent mutton breeds including Dorper sheep, Poll Dorset sheep and Suffolk sheep as the sire (male sheep), and excellent local breeds such as Hu sheep as the dam (she sheep) in barn feeding conditions. The growth performances of the hybrid F₁ lambs, including birth weight, body weight at different ages and average daily gain were measured. The results showed that the average body weight at 6-month age in experimental group A (Doper×Hu sheep), group B (Poll Dorset×Hu sheep), and group C (Suffolk×Hu sheep) were 44.76±3.62 kg, 43.65±4.18 kg, and 43.28±3.34 kg, respectively, which were significantly higher than the average body weight in control group D (Hu sheep, 36.32±3.86 kg) (P<0.01). Compared with the control (group D), the profit of lambs in groups A, B, and C were 80.02 RMB yuan, 69.74 RMB yuan, and 42.74 RMB yuan, respectively, which were more than that in the control group (P<0.01). The growth performance and profit of the experimental group A were better than those of groups B and C (P<0.05).