动物营养学报2016，Vol.28Issue(6)：1748-1756,9.DOI:10.3969/j.issn.1006-267x.2016.06.016
枯草芽孢杆菌对肉仔鸡生长性能、肠道形态和菌群数量的影响
Effects of Bacillus subtilis on Growth Performance, Intestinal Morphology and Bacterial Enumeration of Broilers
摘要
Abstract
This study was conducted to investigate the effects of Bacillus subtilis on growth performance,slaughter performance,intestinal morphology and bacterial enumeration of broilers.A total of 320 one-day-old healthy male Arbor Acres broilers with similar weight were randomly allotted into 4 groups with 8 replicates per group and 10 broilers per replicate.Chickens in control group were fed a basal diet,and those in experimental groups were fed basal diets supplemented with 500 mg/kg Bacillus subtilis (BS group),20 mg/kg colistin sulfate (CS group),and 500 mg/kg Bacillus subtilis +10 mg/kg colistin sulfate (BS+CS group),respectively.The test lasted for 6 weeks.The results showed as follows:1) compared with control group,average body weight of broilers in BS and CS groups was significantly increased at 42 days of age (P＜0.05),average daily gain of broilers in BS and CS groups was increased during 22 to 42 days of age,and the ratio of feed to gain of broilers in BS and CS groups was significantly decreased during 22 to 42 days of age and 1 to 42 days of age (P＜0.05).The growth performance of broilers in BS+CS group had no significantly changes during every experimental period (P＞0.05).2) There was no significant difference in slaughter performance of broilers among all groups (P＞0.05).3) Compared with control group,the villus height and the ratio of villus height to crypt depth in duodenum of broilers in BS group were significantly increased (P＜0.05).4) Compared with control group,Lactobacillus enumeration in cecum of broilers in BS,CS and BS+CS groups was significantly increased at 42 days of age (P＜0.05).The ratio of Lactobacillus to Escherichia coli in cecum of broilers in BS and BS+CS groups was significantly increased at 42 days of age (P＜0.05).Therefore,Bacillus subtilis can improve the intestinal morphology,increase Lactobacillus enumeration in cecum and promote the growth performance of broilers.In conclusion,the effect of Bacillus subtilis is better than that of colistin sulfate,but the effect of combination of Bacillus subtilis and colistin sulfate is not good.关键词
枯草芽孢杆菌/硫酸黏杆菌素/生长性能/肠道形态/微生物区系Key words
Bacillus subtilis/colistin sulfate/growth performance/intestinal morphology/bacterial communities分类
农业科技引用本文复制引用
齐博,武书庚,王晶,齐广海,张海军,阎桂玲,王旭,董延..枯草芽孢杆菌对肉仔鸡生长性能、肠道形态和菌群数量的影响[J].动物营养学报,2016,28(6):1748-1756,9.基金项目
家禽产业技术体系北京市创新团队(CARS-PSTP) （CARS-PSTP）
