日粮添加复合益生菌对肉鸡生长性能、免疫功能及肠道健康的影响  

Effect of dietary compound probiotics on growth performance,immune function and intestinal health of broilers

作　　者：孟小林[1] 祁巧芬 陈英 赵永旭[1] MENG Xiao-lin;QI Qiao-fen;CHEN Ying;ZHAO Yong-xu

机构地区：[1]新疆农业职业技术学院,新疆昌吉831100 [2]吐鲁番市动物疾病控制与诊断中心,新疆吐鲁番838000

出　　处：《饲料研究》2022年第15期52-56,共5页Feed Research

摘　　要：试验旨在研究不同水平复合益生菌对AA肉鸡生长性能、免疫功能及肠道健康的影响。选取1 200只AA肉仔鸡随机分为4组,每组10个重复,每个重复30只鸡。各组AA肉仔鸡分别饲喂含有0 (对照组)、0.1%(试验1组)、0.2%(试验2组)、0.4%(试验3组)复合益生菌的基础日粮。试验期6周。结果显示:与对照组相比,试验2组、试验3组的AA肉仔鸡的42日龄体重、1~42日龄平均日增重显著提高(P<0.05),料重比显著降低(P<0.05)。与对照组相比,42日龄时,试验2组、试验3组AA肉仔鸡的脾脏指数、胸腺指数显著提高(P<0.05)。与对照组相比,各试验组AA肉仔鸡血清中的免疫球蛋白M (IgM)和分泌型免疫球蛋白A (sIgA)含量显著升高(P<0.05),肿瘤坏死因子-α (TNF-α)、白细胞介素-2 (IL-2)含量显著降低(P<0.05),白细胞介素-10(IL-10)含量显著提高(P<0.05);试验2组和试验3组AA肉仔鸡血清中的白细胞介素-6 (IL-6)含量显著降低(P<0.05)。与对照组相比,试验2组和试验3组肉鸡十二指肠的绒毛高度、绒隐比显著提高(P<0.05)。研究表明,日粮中添加适量的复合益生菌改善了AA肉仔鸡的生长性能、免疫功能及肠道健康,适宜添加量为0.2%。The experiment was to study the effect of different levels of compound probiotics on growth performance,immune function and intestinal health of AA broilers. A total of 1 200 AA broiler chickens were selected and randomly divided into four groups, with ten replicates in each group and 30 broilers in each replicate. The AA broilers in each group were fed with a basal diet supplement with 0(control group), 0.1%(group 1), 0.2%(group 2) and 0.4%(group 3) of compound probiotics, respectively. The trial period was 6 w. The results showed that compared with control group, the body weight at 42 d and the average daily gain at 1~42 d of AA broilers in group 2 and group 3 were significantly increased(P<0.05), and feed to gain ratio was significantly decreased(P<0.05). Compared with control group, at the age of 42 d, the spleen index and thymus index of AA broilers in group 2 and group 3 were significantly increased(P<0.05).Compared with control group, the serum levels of immunoglobulin M(IgM) and secreted immunoglobulin A(sIgA) in AA broilers in each test group were significantly increased(P<0.05), and the content of tumor necrosis factor-α(TNF-α),interleukin-2(IL-2) were significantly decreased(P<0.05), the content of interleukin-10(IL-10) was significantly increased(P<0.05). The content of interleukin-6(IL-6) in the serum of AA broilers in group 2 and group 3 was significantly decreased(P<0.05). Compared with control group, the villus height and villus to crypto ratio of duodenum of AA broilers in group 2 and group 3 were significantly increased(P<0.05). The study indicates that adding an appropriate amount of compound probiotics to diet can improve the growth performance, immune function and intestinal health of AA broilers, and the optimum addition amount is 0.2%.

关 键 词：复合益生菌 肉鸡 生长性能 免疫功能 肠道健康 

分 类 号：S831[农业科学—畜牧学]