高锌对雏鹅红细胞免疫功能的影响

Effects of High Dietary Zinc on the Function of Red Cell Immune Adherence in Geese

1日龄天府肉鹅 2 0 0只 ,随机均分为 4组 : 组 ,饲喂基础日粮 (日粮 Zn10 0 m g/ kg,对照组 ) ; 组 ,饲喂基础日粮 +Zn 90 0 m g/ kg; 组 ,饲喂基础日粮 +Zn 14 0 0 mg/ kg; 组 ,饲喂基础日粮 +Zn 190 0 mg/ kg。试验期 7周。用C3b受体花环和免疫复合物花环试验检测高锌对红细胞免疫功能影响的动态变化。结果 :饲粮高锌导致雏鹅红细胞C3b RR花环率降低 ,红细胞免疫粘附能力下降。 、 组 C3b RR花环率 3周龄时显著低于对照组 (P<0 .0 5或 P<0 .0 1) , 组从 2周龄开始极显著低于 组 ;加锌剂量越大 ,C3b RR花环率下降辐度越大。 、 组红细胞 IC花环率 2周龄时显著低于对照组 (P<0 .0 5 ) ,随后 、 、 组 IC花环率均程度不同地升高 ,以 组变化最明显 ,从 3周龄开始与 组比较差异显著或极显著 (P<0 .0 5或 P<0 .0 1) ,且

To determine the effects of high dietary zinc on red cell immune adherence function(RCIA).200 one-day-old Tianfu geese were randomly divided into 4 groups,and fed on diets as follow:Ⅰ.100 mg zinc/kg(control group),Ⅱ.(1 000) mg zinc/kg,Ⅲ.(1 500) mg zinc/kg and Ⅳ.(2 000) mg zinc/kg for seven weeks.Compared with control group,the radio(%) of erythrocyte C_3bRR of three experimental groups decreased in varying degrees(P<0.05 or P<0.01),and the radio(%) of erythrocyte ICR decreased at 2 weeks of age and increased significantly at 3-7 weeks of age(P<0.05 or P<0.01) in three experimental groups.Mechanism of high dietary zinc on the function of RCIA is also discussed.