虫草菌粉对雏鸡免疫功能的影响

摘要

为探讨虫草菌粉对雏鸡免疫功能的影响，以240羽健康余干乌鸡作为研究对象，鸡新城疫苗常规免疫，在饲粮中添加不同剂量虫草菌粉，同时设空白对照组。各组在饲喂虫草菌粉第10、20、30天时随机选择20羽，先采血检测免疫细胞活性、新城疫（ NDV）抗体滴度；再处死称取法氏囊与脾脏的质量。通过研究法氏囊与脾脏质量变化、E－玫瑰花环率、淋巴细胞转化率、新城疫抗体滴度等指标来了解虫草菌粉对雏鸡免疫功能的影响。结果表明：虫草菌粉能够加快雏鸡免疫器官的发育，提高T淋巴细胞活性；在饲喂虫草菌粉20 d时中剂量组比对照组抗体水平提高1∶22．1，高剂量组比对照组提高1∶22．53，使特异性抗体提前达到高水平。说明虫草菌粉能够增强雏鸡免疫功能。%To study the effect of Cordyceps power on poultry ( chickens) immunity,a total of 240 healthy black chickens were randomly divided into four equal groups:low⁃,mid⁃,high⁃dose Cordyceps power group,and blank control group.At the 10,20,30 days during the experiment,20 chickens of each group were selected ran⁃domly to take blood sample for detecting the activity of immune cells and the Newcastle disease( ND) antibody titers,then they were euthanized to detect the development of the weights of spleen and bursa.Chickens immune function was understood by the indexes of the weights of spleen and bursa,E⁃rosette rate,lymphocyte transfor⁃mation rate and Newcastle disease antibody titers. The results showed that Cordyceps power could promote the development of chicken immune organs and increase the activity of T lymphocyte.At the 20 day during the ex⁃periment,the ND antibody titers in the middle⁃dose group improved by 1∶22.1 compared with the control group, and the high⁃dose group improved by 1∶22.53.The results indicated that Cordyceps power can enhance chickens’ immunity.