芽孢乳杆菌对肉仔鸡生产性能、肠道发育和微生物菌群的影响  

Effects of Sporolactobacillus on Performance,Intestinal Development and Microflora of Broilers

作　　者：刘磊[1] 朱立贤[2] 

机构地区：[1]山东农业大学动物科技学院,泰安271018 [2]山东农业大学食品科学与工程技术学院,泰安271018

出　　处：《动物营养学报》2011年第12期2136-2142,共7页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：公益性行业(农业)科研专项经费项目(201003011)

摘　　要：本试验旨在研究不同水平芽孢乳杆菌对肉仔鸡生产性能、肠道发育及微生物菌群的影响。选取1日龄爱拔益加(AA)肉仔鸡2 400只,随机分为4组(每组6个重复,每个重复100只):对照组饲喂基础饲粮,试验组饲喂分别添加200、100和50 mg/kg芽孢乳杆菌的试验饲粮,试验期42 d。结果表明:1)饲粮添加200 mg/kg的芽孢乳杆菌显著降低了肉仔鸡1～3周的料重比(P<0.05);添加100 mg/kg的芽孢乳杆菌显著降低了肉仔鸡全期的料重比和死淘率(P<0.05)。2)饲粮添加200 mg/kg的芽孢乳杆菌显著提高了21日龄肉仔鸡十二指肠和空肠的体重校正长度(P<0.05);添加100 mg/kg的芽孢乳杆菌显著提高了42日龄肉仔鸡十二指肠的相对重量(P<0.05)。3)饲粮添加100 mg/kg的芽孢乳杆菌显著增加了21日龄肉仔鸡空肠绒毛长度、隐窝深度、黏膜厚度和V/C值(P<0.05)。4)饲粮添加200、100和50 mg/kg的芽孢乳杆菌均能显著降低肉仔鸡空肠食糜中大肠杆菌的数量(P<0.05)。由此可见,饲粮添加200和100 mg/kg的芽孢乳杆菌能改善肉仔鸡的料重比和死淘率,效果优于50 mg/kg;添加100 mg/kg的芽孢乳杆菌能促进肠道发育,提高消化吸收功能;所有添加水平的芽孢乳杆菌均能抑制肉仔鸡空肠内的大肠杆菌繁殖。This experiment was conducted to investigate the effects of dietary Sporolactobacillus level on the performance,intestinal development and microflora of broilers.A total of 2 400 one-day-old broiler chickens（Arbor Acres） were randomly allocated to 4 groups with 6 replicates per group and 100 chickens per replicate.The broilers were randomly subjected to one of the following 4 treatments for 42 days： control group（fed a basal diet） and three treatments（fed the basal diet with 200,100 and 50 mg/kg Sporolactobacillus,respectively）.The results showed as follows： 1） adding 200 mg/kg Sporolactobacillus significantly decreased feed/gain of broilers at weeks 1 to 3（P0.05）,and adding 100 mg/kg Sporolactobacillus significantly decreased feed/gain and mortality of broilers at weeks 1 to 6（P0.05）.2） Adding 200 mg/kg Sporolactobacillus significantly increased the weight correction length of duodenum and jejunum of broilers on day 21（P0.05）.Adding 100 mg/kg Sporolactobacillus significantly increased the duodenal relative weight of broilers on day 42（P0.05）.3） Adding 100 mg/kg Sporolactobacillus significantly increased villus length,crypt depth,mucosal thickness and V/C value in jejunum of broilers on day 21（P0.05）.4） Adding 200,100 and 50 mg/kg Sporolactobacillus all decreased significantly the number of E.coli in chyme of jejunum of broilers（P0.05）.In conclusion,adding both of 200 and 100 mg/kg Sporolactobacillus can decrease feed/gain and mortality of broilers,and the effects are better than those of adding 50 mg/kg Sporolactobacillus;adding 100 mg/kg Sporolactobacillus can improve intestinal development and the function of digestion and absorption;all supplemental levels of Sporolactobacillus can inhibit the reproduce of E.coli in jejunum of broilers.

关 键 词：芽孢乳杆菌 肉仔鸡 生产性能 肠道发育 微生物区系 

分 类 号：S816.7[农业科学—饲料科学]