乳酸菌培养物对肉鸡生长性能及免疫功能的影响  

Effects of Lactic Acid Bacteria Cultures on Growth Performance and Immunity Function of Broilers

作　　者：付丽[1,2] 赵巍[2,3] 李立佳[1,2] 汪晓东[1,2] 杜超[1,2] 甄玉国[1,2,3] 

机构地区：[1]吉林农业大学动物科学技术学院,长春130118 [2]吉林农业大学吉农博瑞奶牛研发中心,长春130118 [3]长春博瑞饲料集团有限公司技术中心,长春130114

出　　处：《中国畜牧兽医》2015年第9期2337-2344,共8页China Animal Husbandry & Veterinary Medicine

基　　金：吉林省重大科技攻关项目(2012ZDGG006)

摘　　要：试验旨在研究灭活乳酸菌培养物对肉鸡生长性能及免疫功能的影响。选择300只体重相近的健康1日龄AA肉仔鸡,随机分为5组,每组6个重复,每个重复10只鸡,雌、雄各半。其中对照组饲喂基础日粮,抗生素组在基础日粮中添加0.01%金霉素,乳酸菌培养物组分别在基础日粮中添加0.16%乳酸菌培养物L1、L2、L3。试验期42d,分1~21日龄（前期）和22~42日龄（后期）2个阶段。结果显示,1~21日龄时,乳酸菌培养物L1组肉鸡平均日采食量极显著高于对照组和抗生素组（P〈0.01）,血清中白介素-2（IL-2）含量显著低于对照组（P〈0.05）,脾脏指数、胸腺指数、法氏囊指数均显著高于对照组（P〈0.05）;乳酸菌培养物L2组肉鸡脾脏指数、胸腺指数显著高于对照组（P〈0.05）;乳酸菌培养物L3组肉鸡平均日增重极显著高于对照组和抗生素组（P〈0.01）;抗生素组肉鸡血清中γ-干扰素（IFN-γ）含量显著高于乳酸菌培养物组（P〈0.05）。22~42日龄时,乳酸菌培养物L1、L2组肉鸡平均日增重极显著高于对照组和抗生素组（P〈0.01）;乳酸菌培养物L2组肉鸡血清中免疫球蛋白G（IgG）含量显著高于抗生素组（P〈0.05）,血清新城疫抗体效价及脾脏指数、胸腺指数、法氏囊指数均显著高于对照组（P〈0.05）;乳酸菌培养物L3组肉鸡血清中免疫球蛋白A（IgA）含量及胸腺指数显著高于对照组（P〈0.05）。由此可知,在肉鸡日粮中添加一定量的灭活乳酸菌培养物可在一定程度上提高肉鸡的生长性能、增强其免疫功能,其中,对于提高肉鸡的生长性能,试验前期添加L3效果较好,试验后期添加L1和L2效果较好;对于增强肉鸡的免疫功能,试验前期添加L1效果较好,试验后期添加L2效果较好。This experiment was conducted to study the effects of inactivated lactic acid bacteria cultures on growth performance and immunity function of broilers.A total of 300one-day-old AA broilers with similar weight were randomly assigned to 5groups with 6replicates per group and10 broilers per replicate（half male and half female）.The control group was fed a basal diet;The antibiotic group was fed the basal diet supplemented with 0.01%chlortetracycline;The lactic acid bacteria cultures groups（L1,L2,L3）were fed the basal diets supplemented with 0.16% lactic acid bacteria cultures L1,L2,L3,respectively.The whole experiment period was 42 days,including two phase of days 1to 21（starter period）and days 22 to 42（finisher period）.The results showed as follows：From 1to 21 days of age,ADFI of broilers in lactic acid bacteria cultures groupL1 was extremely significant higher than that in control and antibiotic groups（P〈0.01）,the serum content of IL-2was significantly lower than that in control group（P〈0.05）,the indexes of spleen,thymus and bursa of fabricius were significantly higher than that in control group（P〈0.05）.The indexes of spleen and thymus of broilers in lactic acid bacteria cultures group L2 were significantly higher than that in control group（P〈0.05）;ADG of broilers in lactic acid bacteria cultures group L3 was extremely significant higher than that in control and antibiotic groups（P〈0.01）;The serum content of IFN-γof broilers in antibiotic group was significantly higher than that in lactic acid bacteria cultures groups（P〈0.05）.From 22 to 42days of age,ADG of broilers in lactic acid bacteria cultures group L1 and group L2 were extremely significant higher than that in control and antibiotic groups（P〈0.01）;The serum content of IgG was significantly higher than that in antibiotic group（P〈0.05）,Newcastle disease antibody titers in serum and the indexes of spleen,thymus and bursa of fabricius of broilers were significantly higher than that in control gro

关 键 词：乳酸菌培养物 肉鸡 生长性能 免疫功能 

分 类 号：S816.7[农业科学—饲料科学]