浒苔粉对肉鸡免疫机能及盲肠微生物区系的影响

Effects of Entermorpha Prolifera on Broilers Immune Function and Caecum Microflora

本试验旨在观察饲料中添加不同水平浒苔粉对肉鸡免疫机能及盲肠微生物区系的影响。400只1日龄爱拔益加肉仔鸡随机分为4组,每组5个重复,每重复20只,对照组饲喂基础饲粮,试验组饲粮为基础饲粮中分别添加1%、2%、4%浒苔粉,试验期35 d。结果表明,3个试验组肉鸡的淋巴细胞转化率、新城疫抗体效价显著高于对照组(P<0.05或P<0.01),35日龄肉鸡脾脏指数3个试验组显著高于对照组(P<0.05)。肉鸡盲肠大肠杆菌、乳酸杆菌和双歧杆菌数量各组间无显著差异(P>0.05)。

The experiment was conducted to study the effect of different levels of Enteromorpha prolifera meal added to dietson broilers immune function and caecum microflora. Four hundred 1-day-old Arbor Acres broilers were randomly divided to 4groups with 5 replicates per group and 20 chickens per replicate Broilers in control group were fed basal diet, added with 0 （con-trol）, then in trial groups 1%, 2% and 4% Enteromorpha prolifera meal were added to basal diet for 35 days.The results showedthat ： the blood lymphocyte transformation rate and the serum Newcastle disease antibody titer of three test groups were significantlyhigher than those of the control group （ P〈0.05 or 0.01 ）, and their spleen indexes at 35 d were significant higher than those of thecontrol （P〈0.05） ; there were no significant differences in the indexes of thymus and bursal between the four groups （P〉0.05）. Thequantities of Escherichia coli, Lactobacillus and Bifida bacterium in broilers caecum showed no significant difference between eachgroup （P〉0.05）.