基础日粮添加10mg／kg铜组羊的日增重和饲料转化率显著高于未添加和添加30mg/kg铜组（P＜0.05），与添加20mg/kg铜组差异不显著（P＞0.05）；
Dairy weight gain and feed conversion rate of groups supplemented with 0 and 30 mg of Cu / kg of diet ( P < 0.05 ), but had no significant difference from group supplemented with 20 mgof Cu / kg of diet ( P > 0.05 );
铜羊