凝结芽孢杆菌对肉鸡肠道形态和菌群的影响  

Effects of Bacillus Coagulans on Intestinal Morphology and Flora of Broilers

作　　者：蒋磊 苏绍辉[1] 陈杰 JIANG Lei;SU Shao-hui;CHEN Jie(Department of Animal Science,Suzhou Vocational and Technical College,Suzhou 234000,China;Anhui Haida Feed Co.Ltd,Chizhou 247100,China)

机构地区：[1]宿州职业技术学院动物科学系,安徽宿州234000 [2]安徽海大饲料有限公司,安徽池州247100

出　　处：《白城师范学院学报》2021年第2期48-53,共6页Journal of Baicheng Normal University

基　　金：安徽省高校自然科学研究重点项目(KJ2017A654);安徽省高校人文社科重点项目(SK2019A0913);安徽省高校教师创新团队项目(2019cxtd040);宿州职业技术学院畜牧兽医专业带头人(2020yjzydtr18)。

摘　　要：为研究凝结芽孢杆菌对肉鸡肠道形态和菌群数量的影响,选取1日龄817肉鸡120只,随机分为3组,对照组饲喂基础日粮,抗生素组添加50 mg·kg^(-1)金霉素和5 mg·kg^(-1)黄霉素,凝结芽孢杆菌组添加300 mg·kg^(-1)凝结芽孢杆菌制剂,试验期49 d.结果显示:(1)与对照组相比,添加凝结芽孢杆菌可显著提高十二指肠和空肠内淀粉酶、胰蛋白酶活性,提高绒隐比,但对隐窝深度无显著影响,增加盲肠内乳酸杆菌、双歧杆菌数量,减少大肠杆菌、沙门氏菌数量;(2)与抗生素组相比,饲粮添加凝结芽孢杆菌对肉鸡肠道的绒隐比、盲肠的菌群数量的改善效果更显著.说明饲粮中添加凝结芽孢杆菌能提高肠道消化酶活性,改善肉鸡肠道形态和盲肠菌群的结构组成,其效果优于饲用抗生素.In order to study the effects of Bacillus coagulans on intestinal morphology and flora of broilers,120 one-day old 817 broilers were divided into three groups randomly,the broilers in control group were fed the basal diet,those in the antibiotic group were fed the basal diet supplemented with 50 mg·kg^(-1) aureomycin and 5 mg·kg^(-1) flavomycin,and those in the Bacillus coagulans group were fed the basal diet supplemented with 300 mg·kg^(-1) Bacillus coagulans for 49 days.The results shows as follows:(1)Compared with the control group,adding Bacillus coagulans can significantly increase the activity of amylase and trypsin in duodenum and jejunum,and increase the crypt ratio,but it has no significant effect on the depth of crypt,increasing the number of Lactobacillus and Bifidobacterium in cecum and reducing the number of Escherichia coli and Salmonella;(2)Compared with the antibiotic group,the effect of adding Bacillus coagulans on the improvement of intestinal clove ratio and the number of cecum flora in broilers is more significant.In conclusion,the supplementation of Bacillus coagulans can significantly increase the activities of digestive enzyme,improve intestinal morphology and the composition of cecal bacterial,and its effect is better than that of forage antibiotics.

关 键 词：凝结芽孢杆菌 抗生素 消化酶 绒毛高度 盲肠菌群 

分 类 号：S831.5[农业科学—畜牧学]