饲料中添加复合益生菌对肉鸡生长性能和免疫功能的影响

Effects of Compound Probiotics on Growth Performance and Immune Function of Broilers

为分析饲料中添加复合益生菌对肉鸡生长性能和免疫功能的影响,试验选择贵州省赫章县罗州乡长坪鸡场的300只黄羽肉鸡作为本试验的研究对象,按照随机数字表法分为2组,每组进行10个重复处理,每个重复内均包括15只黄羽肉鸡。通过在饲料中添加复合益生菌,比较分析复合益生菌添加对肉鸡的生长性能和免疫功能的影响。饲料中添加复合益生菌的试验组肉鸡的平均日增重显著高于对照组(P<0.05),试验组肉鸡的料重比显著低于对照组(P<0.05)。饲料中添加复合益生菌的试验组肉鸡的胸腺指数、脾脏指数和法氏囊指数等免疫器官指数值均显著高于对照组(P<0.05),试验组肉鸡的血清IgM、IgA含量显著高于对照组(P<0.05)。饲料中添加复合益生菌,能显著提高肉鸡的生长性能和免疫功能,试验结果为今后本地区的养鸡场合理应用复合益生菌提供了参考依据,值得后续推广应用。

To analyze the effects of compound probiotics in feed on growth performance and immune function of broilers.Methods 300 yellow-feathered broilers on Changping Chicken Farm,Luozhou Township,Hezhang County,Guizhou Province were selected as the research objects of this experiment.Divide into two groups using a random number table method,with ten replicates per group,each containing 15 yellow feathered broiler chickens.The effects of compound probiotics on the growth performance and immune function of broilers were compared and analyzed.The average daily gain of broilers in experimental group was significantly higher than that in the control group(P<0.05),and the ratio of feed to gain of broilers in experimental group was significantly lower than that in the control group(P<0.05).The immune organ index values such as thymus index,spleen index and bursa of fabricius index of broilers in experimental group were significantly higher than those in the control group(P<0.05),and the serum IgM and IgA contents of broilers in experimental group were significantly higher than those in the control group(P<0.05).The addition of compound probiotics in feed could significantly improve the growth performance and immune function of broilers,which will provide a reference for the rational application of compound probiotics on chicken farms in this area in the future,and is worthy of further promotion and application.