Abstract
One hundred and twenty-eight growing barrows (Jiaxing Black×Duroc×Landrace) at an average BW of 20.8 kg were allocated to four treatments for 42 days, each of which was replicated four times with eight pigs per replicate and used to investigate the effects of fructooligosaccharide (FOS) on digestive enzyme activities, intestinal microflora and morphology of growing pigs. The pigs received the same basal corn-soybean meal diet and FOS was added to the basal diet at 0, 2, 4, 6 g/kg diet at the expense of corn, respectively. As compared to control, supplementation with 4 and 6 g/kg FOS significantly improved average daily gain and feed efficiency. Addition of FOS enhanced the growth of Bifidobacterium and Lactobacillus, but inhibited Clostridium and Escherichia coli in the small intestinal and proximal colonic contents. Supplementation with 4 and 6 g/kg FOS significantly improved the activities of total protease, trypsin and amylase in the small intestinal contents. However, FOS had no significant effect on the activity of lipase in the small intestinal contents as well as the digestive enzymes in pancreas. Morphological measurement of jejunal mucosa did show response to consumption of FOS. Villus height and the villus height to crypt depth ratio at the jejunal mucosa were significantly higher with 4 and 6 g/kg FOS supplementation as compared to control. (Asian-Aust. J. Anim. Sci. 2002. Vol 15, No. 12 : 1784-1789)
Highlights
MATERIALS AND METHODSFructooligosaccharide (FOS) is β-linked fructose unit to the fructose moiety of sucrose
Ingredients (%) CornSoybean mealAnimal fat LimestoneDicalcium phosphate Sodium chlorideL-Lysine-HCI (78%)Vitamin-mineral premix1Analyzed chemical composition (% as feed) DE (MJ/kg) Crude protein
Supplementation with FOS increased the viable counts of Bifidobacterium and Lactobacillus, while reduced those of Clostridium and Escherichia coli in the small intestinal and proximal colonic contents
Summary
Fructooligosaccharide (FOS) is β-linked fructose unit to the fructose moiety of sucrose. Because the β-linkages between fructose monomers cannot be hydrolyzed by enzymes of Animals and experimental diets. A total of 128 growing barrows (Jiaxing endogenous origin, FOS escapes enzymatic digestion in the small intestine and forms a substrate for the gastrointestinal Black×Duroc×Landrace) at an average BW of 20.8 Kg were microflora (Tokunaga et al, 1989). Microorganisms in the small intestine of pigs, so FOS is was provided by Meiji Seika kaisha, Ltd. (Tokyo, Japan) fermented to some extent in the small intestine of pigs and the concentration of oligosaccharides was analyzed by (Bolduan, et al, 1993). The main ingredients of this product are glucose, information on the effect of FOS on activity of the fructose, sucrose and FOS. The glucose, fructose and microflora in the small intestine. Received April 1, 2002; Accepted August 1, 2002 gain (ADG), average daily feed intake (ADFI), and
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