维生素E对高温环境下笼养育成蛋鸭生长性能及血液生化指标的影响  

Effects of Vitamin E on Growth Performance and Biochemical Indexes in Laying Ducks Reared in Cages Under High Temperature Environment

作　　者：陈希萍[1] 景栋林 李浩杰 姜慧绘 

机构地区：[1]佛山科学技术学院医学院,广东佛山528000 [2]佛山科学技术学院生命科学与工程学院,广东南海528231

出　　处：《中国畜牧杂志》2017年第11期75-79,共5页Chinese Journal of Animal Science

基　　金：广东省科技计划项目(2014A020208141;2013B020201005)

摘　　要：本试验旨在研究高温环境下(29~35℃)日粮中添加维生素E对金定鸭生长性能及血液生化指标的影响。试验选用10周龄金定鸭母鸭144只,对照组饲喂基础日粮,Ⅰ、Ⅱ、Ⅲ组在基础日粮中分别添加20、220、420 mg/kg维生素E,测定了笼养育成蛋鸭(10~16周龄)生长性能及生化指标。结果表明:处理Ⅰ组和Ⅱ组16周龄采食量显著高于对照组和处理Ⅲ组(P<0.05),处理Ⅱ组和Ⅲ组16周龄体重显著高于对照组(P<0.05),处理Ⅱ组耗料增重比最低;3个处理组的谷草转氨酶活性均显著低于对照组(P<0.05),处理Ⅲ组的谷丙转氨酶活性显著低于另外3组(P<0.05),而4组间乳酸脱氢酶活性差异不显著(P>0.05),处理Ⅱ组总胆固醇浓度显著高于另外3组(P<0.05);处理Ⅱ组和Ⅲ组育成母鸭的胸腺指数明显高于处理Ⅰ组和对照组;处理Ⅱ组和Ⅲ组的生殖器官发育情况比处理Ⅰ组和对照组好,但各组卵巢重、输卵管重或输卵管长差异不显著(P>0.05)。结果提示,日粮中添加220 mg/kg的维生素E可明显改善笼养育成蛋鸭的生长性能,保护肝脏功能,促进免疫器官和生殖器官的发育。The study was conducted to determine the effects of dietary vitamin E levels（0, 20 mg/kg, 220 mg/kg and 420 mg/kg respectively） on growth performance and biochemical indexes in 144 Jinding laying ducks of rearing period（10-16 weeks old） in cages under high temperature environment（29-35℃）. The results showed that the feed intakes of 20 and 220 mg/kg groups at 16 weeks old were higher than that of the control group and 420 mg/kg group（P〈0.05）, the body weights of 220 and 420 mg/kg groups at 16 weeks old were heavier than that of the control group（P〈0.05）, and the feed to gain ratio of 220 mg/kg groups was the lowest among four groups. AST activities of three treatment groups were lower than the control group significantly（P〈0.05）, ALT activity of 420 mg/kg group was lower than other three groups significantly（P〈0.05）, but there was no no significant difference among four groups. TCH concentration of 220 mg/kg group was higher than that of other three groups significantly（P〈0.05）. The thymus indexes of 220 mg/kg group and 420 mg/kg group were higher than that of other two groups significantly（P〈0.05）. The developments of reproductive organs of 220 mg/kg group and 420 mg/kg group were better than that of other two groups, but there was no significant difference in ovary weight, oviduct weight or oviduct length respectively among four groups（P〈0.05）. So the addition of 220 mg/kg of vitamin E could obviously improve the growth performance of the laying ducks in reared cages, protect the function of liver, promote the development of immune organs and reproductive organs.

关 键 词：蛋鸭 维生素E 高温环境 笼养 生长性能 生化指标 

分 类 号：S834.5[农业科学—畜牧学]