Effects of Supplemental Fructooligosaccharide on Growth Performance, Intestinal Microflora and Digestive Enzymes of Finishing Pigs

This experiment was conducted to study the effects of dietary fructooligosaccharide (FOS) on growth performance,intestinal microflora and digestive enzymes in finishing pigs(Duroc* Landrance *Jia).The results were as follows:(1)Consumption of 0.50% and 0.75% FOS improved ADG by 9.67%(P0.01) and 10.67%(P0.01),as compared with control,respectively. F/G ration was decreased by 8.19%(P0.01) and 7.60%(P0.05) ,respectively.(2)Pigs fed the diets supplemented with 0.50% and 0.75% FOS had an enrichment to colonic Bifidobacteria and Lactobacilli by 299.49%(P0.01) and 314.81%(P0.01),97.40%(P0.05) and 141.67%( P0.05 ) together with a reduction of pH by 0.50(P0.05)和0.90 (P0.01). Pigs fed the diets supplemented with FOS had a suppression to Colibacillus and Clostridia respectively.(3) Supplementation FOS improved the activities of total protease,trypsin and α amylase in duodenal content respectively. However,FOS had no effect on the activities of digestive enzyme in pancreas.