复合长效微量元素添加剂对肉用改良牛的育肥效果

选用24头肉用改良牛 ,分为长效瘤胃丸组、常规相应剂量(拌料)组、低剂量组和对照组 ,每组6头牛 ,进行微量元素不同添加方式的试验。试验设7天预试期和73天正试期。试验结果日增重分别为1.054、0.986、0.912和0.887kg,长效瘤胃丸组较对照组提高18.83 % ,较相应剂量(拌料)组多增重7.67个百分点。饲料报酬(NEg MJ/kgG)分别为12.38、13.12、14.17和14.87 ;成本(元)分别为3.506、3.717、4.009和4.209。试验表明 :长效瘤胃丸效果与对照差异极显著 ,比微量元素拌入精料组明显优越。

THE FATTENING EFFECTS OF LONG- EFFECT AND INTRARUMINAL MULTI- MINERAL PELLET ON IMPROVED BEEF CATTLE

Twenty-four improved beef cattle were used to evaluated the effects of trace elements supplementation.These cattle were randomly alloted to one of four treatments:1)long-effect intraruminal multi-mineral pellet group;2)equal-dosage supplemental group;3)low-dosage supplemental group ; 4)control group.Each group consisted of six animals.The experimental period included 7days of preliminary trial and 73 days of test trial.Average daily gain of the 4 groups were 1.054,0.986,0.912 and 0.887kg respectively,and the pellet group increased average dialy gain by 18.83% than control group and improved 7.67 percentage unit than equal-dosage supplemental group.Feed conversion eficiency of the groups were 12.38,13.12,14.17 and 14.87(NEgMJ/kgG) resectively.The cost were 3.506,3.717,4.009 and 4.209 $ respectively.The effect of long-effect intraruminal multil-mineral pellet group were not only better than control group,but also had advantages over another supplemental groups.