维生素E对育成蛋鸭生长及某些免疫指标的影响

选择216只满4周龄的健康金定蛋鸭随机分成6个处理组,每个处理组6个重复,分别饲喂VE含量为0、10、15、20、40、100IU/kg的日粮,研究日粮中添加不同水平的VE对育成蛋鸭生长及某些免疫指标的影响,结果表明:①日粮中添加VE能提高蛋鸭的日增重和日采食量,降低料重比,其中以第Ⅲ和第Ⅳ组(添加量为15IU/kg和20IU/kg)效果较好,但试验各组差异不显著(P>0.05)。②日粮中添加15IU/kg和20IU/kgVE时,血清中的免疫球蛋白(IgG、IgM)、白细胞介素-2(IL-2)、甲状腺素(T3、T4)的浓度最高,皮质醇(Cort)的浓度最低,能较全面地提高蛋鸭的免疫机能。③日粮中添加高剂量(100IU/Kg)VE时,蛋鸭的生长性能及免疫机能有不同程度地降低。综合分析,在蛋鸭育成期的基础日粮中添加15～20IU/kgVE,可提高其生长性能,改善蛋鸭的免疫机能。

Effects of vitamin E on growth and some immune parameters in growing ducks

Two-hundred sixteen Jin-Ding ducks with an average weight of (0.45?à0.01) kg and health, were used and randomly allotted into six treatments with six replications, adding 0、10、15、20、40、100 IU/kg VE to the basal diet respectively. To clarify the effect of different level of VE on growth performance and some immune parameters in growing ducks. The results showed that, ①The growth performance were increased in blood-serum, which adding 15 and 20 IU/kg VE were better in ducks diet. ②When adding 15 and 20 IU/kg VE, the IgG, IgM, IL-2 and T3、T4 were highest, the Cort was lowest, which can increase the immunology from all.③dding higher doze(100 IU/kg)E, the growth performance and immunology ability were decreased. Analysis all these, adding 15～20 IU/kg VE in the ducks diet, which will increase the growth performance and improve the immune ability.