寒冷地区塑膜暖棚育肥西杂牛试验研究

Fattening Simmental Crosses in Plastic Shed in Cold Region

张家川地处高寒阴湿地区，冬季漫长，气候寒冷，家畜“夏壮、秋肥、冬瘦、春死亡”的现象较为普遍。为改变这一现象，作者于１９９６年１１月到１９９７年２月底开展了本试验，用２～３岁膘情中等的西杂阉牛４０头，分试验组与对照组各２０头，采用单因子作对比试验。试验组为塑膜暖棚，对照组为常规圈舍，试验期１２０天，两组牛饲养管理条件相同，结果表明：试验组温度平均为９．４℃，对照组圈内温度平均为－１．８℃，头平均日增重分别为８２．８ｋｇ和５９．３ｋｇ，差异极显著（ｐ＜０．０１），两组牛料肉比分别为２．９∶１和４．０５∶１，试验组饲料报酬明显高于对照组。

Zhangjiachuan located in the area of cold and wet pleteau with long winter time and cold clmate. In order to change the situation of “robust in summer,fat in autumn,emaciate in winter and dead in spring” for farm animals,the experiment was conducted from Nov,1996 to Feb,1997.Forty 2-3 year old castrated Simmental Crosses with moderate body condition were divided into two groups.During 120 days period,treatment group was kept in plastic shed and control group was housed in the ordinary barn,animals in two groups received the same feeding and management.The result showed that average temperature of treatment and control group was 9.4 and -1.8℃,average total gain was 82.8 and 59.3kg(P<0.01),feed gain ratio was 2.9∶1 and 4.05∶1,the feed conversion rate of treatment group was obviously higher than control group.