益生菌剂对仔猪肠道菌群的影响

为研究益生菌剂对仔猪肠道菌群的影响,选择60头7.5 kg左右的"杜洛克猪×长白猪×大白猪"原种猪,随机分成2组,每组3个重复,每个重复10头。将仔猪分为试验组和对照组,对照组饲喂基础日粮,试验组饲喂基础日粮+0.1%益生菌剂,检测各组仔猪生产性能及肠道菌群等。试验结果表明,益生菌制剂能显著降低仔猪腹泻率(P<0.05),促进仔猪的生长;大肠杆菌和肠球菌是仔猪肠道非常住菌群(过路菌),乳酸杆菌、双歧杆菌、产气荚膜梭菌为常住菌群;益生菌剂能极显著减少仔猪肠道的好氧菌(P<0.01),极显著增加仔猪肠道的厌氧菌、双歧杆菌和乳酸杆菌(P<0.01),显著降低仔猪肠道的产气荚膜梭菌(P<0.05)。因此,饲料中添加益生菌剂能有效改善仔猪肠道菌群。

The Influences of Probiotics on Intestinal Microflora in Piglet

For studying the influences of probiotics on intestinal microflora in piglet,60 heads of about 7.5 kg "Duroc ? Landrace ? Large white pig"original breeding,were randomly divided into 2 groups,3 replicates in each group,each replicate 10 heads. The piglets were divided into the experiment group and control group, the control group was fed with basal diet, the test group was fed with basal diet +0.1% probiotic.Detecting clusters of piglet growth performance and intestinal flora. The results showed that probiotics could significantly reduce piglet diarrhea rate (P<0.05) and promote the growth of piglet.The results showed that Lactobacillus, Bifidobacteriub and Clostridium perfringens were inhabitants,while Escherichia coli and Enterococcus were not inhabitants. There was significantly less aerobes (P<0.05) and more anaerobes,especially Lactobacillus and Bifidobacteriub in the intestines from the piglet fed the diets containing probiotics than those in the control group (P<0.01). Probiotics significantly decreased in the number of Clostridium perfringens (P<0.05). Therefore, added with probiotic agent could effectively improve the intestinal microflora in piglet.