Studies On Effect Of Xylo-oligosaccharideon Performane, Antibody Level And Intestinal Microflora Of Weaning Piglets

Seventy-two piglets weaned at age of 28 day (Duroc× Landrace× Yorkshire) were randomly assigned to four treatments, There were threereplicates pens per treatment with six pigs per replicate (male :female=1:1).A11 pigs had been fed and watered freely during five—week trial period. The first treatment(control group) were fed commoncorn—soybean meal diet. The second treatment pigs were fed 125g/t, 250g/t, 375g/t, Xylo-oligosaccharide(XOS) alter weaning the first, second,third, fourth and fifth week.That is the second and third treatment pigswere fed 250g/t XOS, the fourth treatment were fed 375g/t Xos, ALL the comparison group adding 2%. aureomycin. In Order to study the effect of itssupplementation on the intestinal microflora, immunity function andpeformance of weaning piglets. Results suggested: (1) There were significant improvement on ADG and the incidence of diarrhea(P<0.0.5); no significant improvement on FI and Feed/Gain (P>0.05) when diets were supplementedXOS. C group is significantly compared with control group on Gain BW, ADG and F/G, especially is very significantly on ADG, It high than others as follows: 17.27%, 10.44%, 8.96%. On diarrhoea exponential character, B, Cgroup can significantly depress incidence of pig diarrhoea(P<0.05), B group can depress incidence of pig diarrhoea in 60.7% and frequency of pig diarrhoea in 77.88%; C group cane depress incidence of pig diarrhoea in 80.3% and frequency of pig diarrhoea in 90.3%. (2)Compared to controlgroup, Pigs fed Xos had significantly dereased the concentration of Ecoli , suppressed another pathogenic bacteria growth in gut. XOSsupplementation in treatment 2 and 3 had significant improvement on the concentration of Bifidobacterium in colon caecum and rectum(P<0.05). A group level of the diet significantly improved the concentration of Bifidobacterium in colon and rectum(P<0.05), not in caecum(P>0. 05). Differenl level of XOS in diet and different methods of the addition had no significant improvement on concentration of lactobacilli in colon(P>0.05), but there wereno same effect of all treatments on concentration of lactobacilli in caecum and rectum. (3)Compared to control group, XOS had n'o significant improvement on the concentration of serum SFD antibody, IgA and IgM(P>0.05), but it had significant improvement on concentration of serum IgG(P<0.05).