无角陶赛特羊与小尾寒羊杂交对后代生产性能产生的影响

Effect of Poll Dorset sheep and Small tailed Han sheep cross on production performance of descendant

通过无角陶赛特公羊与小尾寒羊母羊杂交,对陶寒F1代生长发育、繁殖性能进行了测定。测定结果显示,F1代3月龄、6月龄公、母羊体重、日增重较小尾寒羊都有明显提高,F1代6月龄羊胸围均显著大于小尾寒羊;F1代胴体重、屠宰率、净肉率明显高于小尾寒羊,F1代繁殖性能产羔率与小尾寒羊变化不大。结果表明:F1代早期增重显著好于小尾寒羊,肉用体型较小尾寒羊明显改善,繁殖产羔率较无角陶赛特有所提高,发情呈现一定季节性。

The growth and development and reproductive performance of hybridization F1 Poll Dorset ram and small tailed Han ewes was determined. Determination results showed that ram body weight, ewe body weight, daily gain of F1 generation aged3 months, 6 months has obviously improved than that of small tailed Han sheep. The chest eircumference of F1 generation aged 6 mon slaughter rate, net lambing rate of F1 meat rate of F1 generation was ths was significantly greater than the small tailed Han sheep. The carcass weight, generation is significantly higher than the small tailed Han sheep. The reproduction almost same with small tailed Han sheep. The results showed that the early gain weight, meat, body type of F1 generation was significantly better than small tailed Han sheep, But breeding lambing rate of small tailed Han sheep was improved compared with Poll Dorset, estrus present a certain seasonal in small tailed Han sheep.