动物营养学报2017，Vol.29Issue(1)：249-256,8.DOI:10.3969/j.issn.1006-267x.2017.01.028
凝结芽孢杆菌对肉鸡生长性能、免疫器官指数、血清生化指标及肠道菌群的影响
Effects of Bacillus coagulans on Growth Performance, Immune Organ Indexes, Serum Biochemical Indexes and Intestinal Flora of Broilers
摘要
Abstract
This study was conducted to evaluate the effects of Bacillus coagulans on growth performance, im⁃mune organ indexes, serum biochemical indexes and intestinal flora of broilers. A total of 10 000 one⁃day⁃old AV500 broilers were randomly divided into two groups with five replicates per group, and each replicate con⁃tained 1 000 broilers. Broilers in the control group were fed a basal diet, and the others in the test group were fed the basal diet+300 mg/kg Bacillus coagulans. The experiment lasted for 6 weeks. The results showed as follows:1) the mortality of broilers of test group was significantly lower than that of control group at 1 to 21 days of age and 22 to 42 days of age ( P<0.05) , and decreased by 61.7% and 52.42%, respectively;the av⁃erage daily gain and average daily feed intake of broilers of test group were significantly higher than those of control group at 22 to 42 days of age ( P<0.05) . 2) The spleen index, thymus index and bursa of Fabricius in⁃dex of broilers of test group were significantly higher than those of control group at 21 days of age ( P<0.05) , while the intestinal index was significantly lower than those of control group ( P<0.05) . The spleen index and thymus index of broilers of test group were significantly higher than those of control group at 42 days of age ( P<0.05) . 3) The activities of alanine aminotransferase, alkaline phosphatase and the contents of total pro⁃tein, globulin in serum of broilers of test group were significantly higher than that of control group at 21 and 42 days of age ( P<0.05) . 4) The number of Bacillus coagulans in appendix and ileum digesta of broilers of test group was significantly higher than that of control group at 21 and 42 days of age ( P<0.05) , while the E. coli number was significantly lower than that of control group ( P<0.05) . In conclusion, dietary added with Bacil⁃lus coagulans can inhibit the growth of E. coli in the intestine, improve the immune organ indexes and reduce the mortality of broilers.关键词
凝结芽孢杆菌/肉鸡/免疫器官指数/血清生化指标/肠道菌群Key words
Bacillus coagulans/broilers/immune organ indexes/serum biochemical indexes/intestinal flora分类
农业科技引用本文复制引用
赵娜,申杰,魏金涛,张巍,陈芳,杨雪海,郭万正,杜金平,黄少文..凝结芽孢杆菌对肉鸡生长性能、免疫器官指数、血清生化指标及肠道菌群的影响[J].动物营养学报,2017,29(1):249-256,8.基金项目
国家肉鸡产业技术体系（CARS-42-Z16）；湖北省科技创新团队项目 （）
