维生素D_3对笼养育成蛋鸭生长性能及机体免疫的影响  

Effects of Vitamin D_3 Levels on Growth Performance and Immune Function of Laying Ducks in Cage

作　　者：王丽[1] 冯望宝[1] 王永平 王安[1] 

机构地区：[1]东北农业大学动物营养研究所,黑龙江哈尔滨150030 [2]哈尔滨大江牧业科技有限公司,黑龙江哈尔滨150030

出　　处：《中国家禽》2009年第11期11-14,共4页China Poultry

基　　金：国家自然科学基金资助项目(30571345)

摘　　要：试验选用体重相近的5周龄金定鸭150只,随机分为5个处理,每个处理6个重复,每个重复5只鸭,饲粮中添加的VD3水平分别为0、400、1500、3000、5000IU/kg,研究不同水平VD3对笼养育成蛋鸭生长性能、血液指标及免疫功能的影响。结果表明:饲粮中添加VD3能显著提高育成期蛋鸭的日增重和饲料转化率(P<0.05);对钙磷、总蛋白、白蛋白影响均差异显著(P<0.05),对球蛋白含量影响不显著(P>0.05),但有升高的趋势;T4值显著降低(P<0.05),而T3/T4的值呈显著上升趋势(P<0.05);对脾脏指数、法氏囊指数影响差异不显著(P>0.05),但均有所改善;对骨重指数影响差异显著(P<0.05),3000IU/kg组显著高于其它各组(P<0.05)。综合试验结果表明,蛋鸭在笼养条件下育成阶段VD3的适宜添加量为1500～3000IU/kg。The experiment was designed to study the effects of vitamin D3 on growth performance and immune function in five-week-old ducks. 150 ducks were randomly divided into 5 groups,6 replicates each group 5 ducks each replicate. Vitamin D3 supplement amount was 0,400,1 500,3 000,5 000 IU/kg. The results showed as follows： There were significant differences in average daily gain （ADG）and feed conversion ratio （FCR）among the treatments （P〈0.05）;With the increasing levels of vitamin D3 in the diet,Ca,P,TP and ALB had significant differences （P〈0.05）, GLOB had no obvious difference （P〉0.05）,while it was tending to upward;The concentration of T4 decreased and T3/T4 increased （P〈0.05）;Spleen index and bursa of fabricius index were not significantly affected （P〉0.05）,however ducks fed vitamin D3 showed increasing tendeney;Vitamin D3 had obvious effects on bone weight indexes （P〈0.05） and 3 000 IU/kg was the highest compare to other groups. It was concluded that the optimal vitamin D3 supplement amount of young laying ducks were from 1 500 IU/kg to 3 000IU/kg under cage condition.

关 键 词：维生素D3 笼养育成蛋鸭 生长性能 生化指标 免疫功能 

分 类 号：S865.34[农业科学—野生动物驯养] S828.5[农业科学—畜牧兽医]