摘要： 为探索桦褐孔菌发酵产物对鸡生长和免疫性能的增强作用，于饲料中添加了不同浓度的发酵产物，并在不同时间点对鸡体的生长指标（平均日增重、料肉比）、免疫器官指数和非特异性免疫指标（总抗氧化能力（T-AOC）、超氧化物歧化酶（SOD）和血清溶菌酶（LSZ））进行了比较和分析。结果表明，当桦褐孔菌发酵产物添加浓度为0.8%时，能够有效提高机体的平均日增重、降低料肉比；所有添加浓度的桦褐孔菌发酵物均能够促进免疫器官的发育，尤其当添加浓度在0.8%~2.0%时，21，42 d的免疫器官指数始终高于黄芪多糖组（阳性对照）；桦褐孔菌发酵物的添加能够增强机体总抗氧化能力和超氧化物歧化酶、血清溶菌酶的含量，当浓度为0.8%时效果最佳且与对照组差异显著。结果明确了桦褐孔菌发酵产物对鸡生长和免疫性能的促进作用，确定了0.8%为最佳添加浓度，其效果优于黄芪多糖，为禽类绿色新药的开发提供了基础材料。

关键词: 桦褐孔菌, 发酵产物, 生长性能, 免疫指标

Abstract: In order to conduct the expansionary effect of Inonotus obliquus fermentation products on growth and immune performance of chicken,different concentrations of fermentation products were added in basal diet.Growth parameters,including average daily gain and feed conversion ratio,immune organ index and non-specific immune parameters such as total antioxidant capacity(T-AOC),superoxide dismutase(SOD) and lysozyme(LSZ) of all groups at different time points were compared and analyzed.The results showed that,at the concentration of 0.8%,fermentation product of Inonotus obliquus could raise average daily gain and downregulate feed conversion ratio compared with negative control effectively;Every concentration of fermentation products could make the development of chicken immune organs and as the concentration at 0.8%-2.0%,the index of thymus,spleen and bursal were higher than Astragalus polysaccharide used as positive control at both day 21 and 42;Moreover,non-specific immune function was enhanced by Inonotus obliquus fermentation products,and the changes was significantly(P <0.05) compared with negative and positive control at the concentration of 0.8%.Results showed growth and partial immune parameters of chicken were promoted effectively by Inonotus obliquus fermentation products and the optimum concentration was 0.8% whose effect overall superior to Astragalus polysaccharide.These finding provide a candidate for the development of green new drugs for avian.

Key words: Inonotus obliquus, Fermentation products, Growth performance, Immune parameter

中图分类号: 

• S432