低聚木糖对仔猪生产性能和肠道微生物影响的研究

(目的)本试验旨在研究添加不同梯度低聚木糖对仔猪生产性能和肠道微生物的影响。(方法)试验选取35±2日龄体型基本一致的断奶仔猪300头,随机分为5个处理,每个处理6个重复。处理1为对照组(饲喂基础日粮),处理2、3、4、5分别在基础日粮的基础上添加50 mg/kg、100 mg/kg、150 mg/kg、200 mg/kg低聚木糖。(结果)结果表明,日粮中添加不同水平的低聚木糖,可降低仔猪的腹泻率(p<0.05),同时对仔猪的平均日增重(ADG)、平均日采食量(ADFI)、料重比(F/G)也有所改善但差异不显著(p>0.05)。低聚木糖添加组明显增加了乳酸菌的含量(p<0.05),对乳酸菌/沙门氏菌,乳酸菌/大肠杆菌比值有明显的改善作用(p<0.05),乳酸菌/对芽胞杆菌没有显著差异(p>0.05)。(结论)试验结果证明,低聚木糖对仔猪的生产性能有提高的趋势,可以增加仔猪肠道有益菌的数目,维持肠道微生物平衡。

EFFECTS OF XYLO-OLIGOSACCHARIDES ON GROWTH PERFORMANCE AND LNTESTINAL MICROFLORA ON PIGLETS

The experiment was conducted to assess the effects of Xylo-oligosaccharides(XOS) on growth performance and Intestinal Microflora in piglets.A total of 300,28-day-old post-weanling pigs were randomly assigned to one of 5 dietary treatments with 6 replicates of 10 piglets each.Treatments included: 1) basal diet(BD,control);2) BD+50 mg/kg XOS;3) BD+100 mg/kg XOS;4) BD+150 mg/kg XOS;5) BD+200 mg/kg XOS.Results showed that all the piglets had the similar ADG,ADFI and F/G(P>0.05) contrast to the control group.XOS improved Lactobacillusand had no effect(p>0.05) on Salmonella(Sa) Coli bacillus(Cs),Bacillus(Bs),but changed(p<0.05)Ls / Sa,Ls / Csgreatly.In conclusion,piglets supplemented with XOS tended to have lower F/G,greater ADFI and improved Intestinal Microflora.