异麦芽低聚糖对早期断奶仔猪肠道主要菌群的影响

THE EFFECT OF ISOMALTOOLIGOSACCHARIDES ON CAECAL AND PIGLETS

选择28日龄断奶仔猪54头 ,随机分为9组 ,分别施以3种不同日粮 ,每种日粮处理组分3个重复。3组日粮分别为添加0.50 %异麦芽低聚糖(IMO组)、110mg/kg 阿散酸(抗生素组)和空白对照组。各组基础日粮相同。分别于35和42日龄从各组选3头仔猪屠宰 ,以测定盲肠、结肠主要菌群(大肠杆菌、乳酸杆菌、双歧杆菌)浓度。试验结果表明 ,添加IMO组盲肠、结肠大肠杆菌浓度显著(P<0.05)低于对照组 ,而乳酸杆菌浓度显著高于对照组和抗生素组(P<0.05) ,双歧杆菌浓度高于对照组 ,但差异不显著(P>0.05)。添加抗生素组盲肠大肠杆菌浓度显著(P<0.05)低于对照组 ,乳酸杆菌、双歧杆菌浓度低于或显著(P<0.05)低于I

Fifty four piglets weaned at 28 days were divided into three groups,the antibiotic group,the control group and the 0.50% IMO group respectively.The basic diet of the three groups was the same.The experiment lasted 21 days.One piglet of each replicate was slaughtered on 35 and 42-day-old, respectively to measure the caecal and colonic microflora population.The result showed that caecum and colon E.coli concentration of IMO group was lower(P<0.05) than that of the control group.The caecum E.coli of the antibiotic group decreased significantly(P<0.05).Piglets fed diet containing 0.50% IMO had higher lactoacilli concentrations than the other two groups.There were no significant difference of bifidobacteria concentration among the three treatments.