【摘要】 为了探索在肉鸭不同阶段日粮中添加不同水平氯化胆碱和维生素E对肉鸭增重性能的影响 ,进行了该项试验。结果表明 :0～ 14日龄 ,添加氯化胆碱 6 5 0mg kg组的增重最高 ,极显著高于 115 0mg kg组(P <0 .0 1) ,与 90 0mg kg组差异不显著 (P >0 .0 5 ) ;添加维生素E 10 0mg kg组和 12 5mg kg组的增重分别居第一名和第二名 ,极显著高于 15 0mg kg组 (P <0 .0 1) ;10 0mg kg组和 12 5mg kg组之间差异不显著(P >0 .0 5 )。15～ 35日龄 ,添加氯化胆碱 6 5 0mg kg组的增重最高 ,极显著高于 90 0mg kg组和 115 0mg kg组(P <0 .0 1) ;90 0mg kg组与 115 0mg kg组之间差异不显著 (P >0 .0 5 ) ;添加维生素E 12 5mg kg组显著高于15 0mg kg组 (P <0 .0 5 ) ,与 10 0mg kg组差异不显著 (P >0 .0 5 )。 36～ 4 9日龄 ,添加氯化胆碱 90 0mg kg组的增重最高 ,极显著高于 115 0mg kg组 (P <0 .0 1) ,与 6 5 0mg kg组之间差异不显著 (P >0 .0 5 ) ;添加维生素E 15 0mg kg组的增重最高 ,与 10 0mg kg组和 12 5mg kg组之间差异不显著 (P >0 .0 5 )。根据以上试验结果 ,并综合考虑生长速度、经济效益及消费者对瘦肉的要求 ,建议肉鸭日粮中添加氯化胆碱和维生素E水平为 :0～ 14日龄 ,氯化胆碱 6 5 0mg kg、维生素E 10 0～ 12 5mg更多还原

【Abstract】 The experiments were conducted in order to study the effects of adding choline chloride and vitamin E to the rations of meat ducks at different stages on the gain in the duck weight. The results were as follows. For the 0～14-day-old ducks,the effect of adding 650 mg/kg choline chlorideto the ration on the weight gain was the greatest, which was very significantly greater than that of adding 1150 mg/kg choline chloride(P≤0.01),but not significantly different from that of adding 900 mg/kg choline chloride(P> 0.05) the effect of adding 100 mg/kg vitamin E was greater than that of adding 125 mg/kg vitamin E though the difference between them was not significant(P>0.05), and both effects were very significantly greater than that of adding 150 mg/kg vitamin E. For the 15～35-day-old ducks, the effect of adding 650 mg/kg choline chloride was very significantly greater than that of adding 900 mg/kg or 1150 mg/kg choline chloride(P< 0.01), and the difference between the effects of adding 900 mg/kg and 1150 mg/kg choline chloride was not significant(P>0.05); the effect of adding 125 mg/kg vitamin E was significantly greater than that of adding 150 mg/kg vitamin E(P<0.05) and not significantly different from that of adding 100 mg/kg vitamin E(P>0.05). For the 36～49-day-old ducks, the effect of adding 900 mg/kg choline chloride was the greatest, which was very significantly greater than that of adding 1150 mg/kg choline chloride(P<0.01), but not significantly different from that of adding 650 mg/kg choline chloride(P>0.05); the effect of adding 150 mg/kg vitamin E was the greatest, though it was not significantly different from the effects of adding 100 mg/kg and 125 mg/kg vitamin E(P>0.05). According to the above results and the demand for the growth rate and economic benefit of meat ducks as well as consumers’ requirement for the lean meat, proposals of adding choline chloride and vitamin E to the rations of meat ducks were put forward, that is, choline chloride is 650 mg/kg and vitamin E is 100～125 mg/kg for the 0～14-day-old ducks, choline chloride 650 mg/kg and vitamin E 100～125 mg/kg for the 15～35-day-old ducks, and choline chloride 650 mg/kg and vitamin E 150 mg/kg (or choline chloride 900 mg/kg and vitamin E 100 mg/kg) for the 36～49-day-old ducks.更多还原