Increased intestinal viscosity depresses carcass growth and encourages intestinal proliferation of Escherichia coli in weaner pigs
McDonald, D.E., Pethick, D.W., Mullan, B.P. and Hampson, D.J. (2000) Increased intestinal viscosity depresses carcass growth and encourages intestinal proliferation of Escherichia coli in weaner pigs. In: 16th International Pig Veterinary Society Congress, 17 - 20 September, Melbourne, Australia p. 21.
Although it is recognised that high levels of dietary insoluble non-starch 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).
The aim of this study was to further investigate the potential detrimental effects of increased intestinal viscosity in weaner pigs by feeding them an experimental diet supplemented with carboxymethycellulose (CMC), a water-soluble preparation resistant to fermentation. The effect of increased viscosity on gastrointestinal development, growth performance and incidence of diarrhoea caused by haemolytic E. coli was monitored.
|Publication Type:||Conference Paper|
|Murdoch Affiliation:||School of Veterinary and Biomedical Sciences|
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