摘要
选择 1日龄健康AA肉鸡 6 0 0羽 ,随机分为 3组 ,每组设 4个重复 ,分别施以 3种不同日粮 :基础日粮添加 0 .1%异麦芽低聚糖 (低聚糖组 ) ;基础日粮添加 3.3mg/kg硫酸粘杆菌素 +16 .5mg/kg杆菌肽锌 (抗生素组 )和基础日粮 (空白对照 )组 ,各组基础日粮相同。分别于肉鸡 2 1日龄和 42日龄时从各组中选 2只试验鸡 ,解剖 ,取其空肠和盲肠新鲜内容物 ,用以测定试验鸡肠道中主要微生物菌群 (大肠杆菌、沙门氏菌和乳酸杆菌 )的数量。结果表明 :添加低聚糖组试鸡空肠和盲肠内大肠杆菌数量显著低于对照组 (P <0 .0 5 ) ,乳酸杆菌数量显著高于对照组 (P<0 .0 5 ) ;在添加低聚糖组肉鸡肠道内仅检测到很少或几乎没有沙门氏菌 ;添加抗生素组试鸡中空肠和盲肠内大肠杆菌、沙门氏菌和乳酸杆菌浓度均显著低于对照组 (P <0 .0 5 )
A total of 600 one-day-old AA broilers were selected and randomly assigned to three groups to study the effect of isomaltooligosacchrides(IMO) on jejunum and caecum microflora. Each group consisted of four replications of 50 broilers.Three group were fed with diets as follows respectively:①basic diet +0.1%IMO;②basic diet +(3.3 mg/kg colistin sulfate+16.5 mg/kg zinc bacitracin);③basic diet as control. On day 21 and day 42 of the trail, two broilers of each replication were dissected to take the digesta of jejunum and caecum out and assay the population of E.coli, salmonella and lactoacillus. The results showed that E.coli population in the jejunum and caecum of IMO group was lower (P<0.05) than that of control group,but lactoacillus population was significantly higher than that of the control group (P<0.05).Little salmonella were measured in jejunum and caecum of IMO group.E. coli,salmonella and lactoacillus population in the jejunum and caecum of antibiotic group were lower than that of control group(P<0.05).
出处
《江苏农业学报》
CSCD
2002年第3期159-162,共4页
Jiangsu Journal of Agricultural Sciences
基金
国际合作项目
