Increased Intestinal Viscosity Depresses Carcass Growth and Encourages Intestinal Proliferation of Escherichia Coli in Weaner Pigs
نویسندگان
چکیده
Although it is recognised that high levels of dietary insoluble nonstarch polysaccharides (NSP) depress growth in pigs (1), trials investigating the effect of dietary soluble NSPs (sNSP) on performance have produced inconsistent results, depending on the type of grain fed, age of pig and other interacting factors. Diets with high levels of sNSP depress growth and have anti-nutritive properties when fed to poultry, and part of this effect is attributed to the ability of sNSP to increase the viscosity of intestinal digesta (2). A previous study into the effects of guar gum, a viscous water-soluble NSP, on the performance and health of weaner pigs showed a detrimental effect on growth and an exacerbation of experimental post-weaning colibacillosis caused by enterotoxigenic Escherichia coli when this ingredient was fed (3).
منابع مشابه
Increasing the viscosity of the intestinal contents stimulates proliferation of enterotoxigenic Escherichia coli and Brachyspira pilosicoli in weaner pigs.
The present study was designed to evaluate the effect of increased viscosity of the intestinal digesta on proliferation of enterotoxigenic Escherichia coli and the intestinal spirochaete Brachyspira pilosicoli in weaned pigs. Pigs were fed an experimental diet based on cooked white rice (R), which was supplemented with carboxymethylcellulose (CMC; 40 g/kg diet) to increase digesta viscosity. Th...
متن کاملIncreasing viscosity of the intestinal contents alters small intestinal structure and intestinal growth, and stimulates proliferation of enterotoxigenic Escherichia coli in newly-weaned pigs.
Sources of viscous soluble fibre, such as barley and oats, have often been included in the weaning diet of the pig to accelerate development of the large intestine. Inclusion of a non-fermentable, viscous compound, sodium carboxymethylcellulose (CMC), in a low-fibre weaning diet was tested to assess the influence of digesta viscosity on the gut in the absence of increased fermentation. Two CMC ...
متن کاملAddition of pearl barley to a rice-based diet for newly weaned piglets increases the viscosity of the intestinal contents, reduces starch digestibility and exacerbates post-weaning colibacillosis.
The purposes of the present study were to investigate the effects of feeding a cereal grain containing NSP on body growth and the intestinal microenvironment of recently weaned pigs, and to examine resultant associations with pathogenic Escherichia coli in the intestinal tract. In Expt 1, pearl barley, a grain rich in soluble NSP, was incorporated (250, 500 or 750 g/kg diet) into a low-fibre co...
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