肉羊经济杂交羔与纯繁羔在冀西北高寒半干旱区生长对比研究

Contrast between the Crossbred Lambs and the Pure Breeding of Fat-Tail Sheep in the Plateau Region of Northwest Hebei

为掌握冀西北高寒半干旱地区中无角陶塞特与大尾寒羊进行杂交的一代羔羊,在农户一般舍饲条件下与大尾寒羊纯繁羔羊生长情况的差异性,于2001年11月至2003年11月间,在河北省张北县小二台试验区,进行了研究。结果表明,在农户一般的舍饲条件下,不同胎次的杂交一代羔羊在初生重、1月龄重、3月龄重、6月龄重均高于纯繁羔羊的体重,其中产单羔的3月龄体重差异极显著(P＜0.01),6月龄体重差异显著(0.01＜P＜0.05)；产双羔的6月龄体重差异显著(0.01＜P＜0.05),生产经济杂交羔比纯繁羔羊提高效益54.43元／只。因此,该区引入无角陶塞特与本地大尾寒羊进行经济杂交,在农户一般饲养管理条件下能取得较高的经济效益,应大力推广。

The purpose of this experiment is to study the different status between the crossbred generation I of Poll Dorset and the purebred fat-tail sheep in the common condition of farmers in the plateau region of Northwest Hebei. The results showed that the body weight of the crossbred generation I was weightier than the lambs of the pure breeding of fat-tail sheep at different period （first body weight, 1 month weight, 3 month weight and 6 month weight） and different hypoembryo. The contrast of 6-month weight is especially remarkable （0.01〈P〈0.05）. The farmer canmake an extra profit of 54. 43 yuan on each crossbred lamb. Therefore we think that the crossbred lamb of Poll Dorset and the Fat tail sheep was the best choice in common condition of farmers in the plateau region of the northwest of Hebei.