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The inhibition of nutrient digestion by wheat pentosans

Published online by Cambridge University Press:  09 March 2007

M. Choct
Department of Animal Science, University of Sydney, Camden, NSW 2570, Australia
G. Annison
Department of Animal Science, University of Sydney, Camden, NSW 2570, Australia
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Two pentosan-rich fractions (water-extractable, WEP, and alkali-extractable, AEP) were isolated from a wheat milling by-product. When both WEP and AEP were added to a commercial-type broiler diet the apparent metabolizable energy (AME), nitrogen retention, feed utilization and growth of broilers were significantly (P < 0.001) depressed. These depressions were closely correlated (P < 0.001) to the level of pentosans in the diets. At the highest level of inclusion of pentosans (equivalent to 40 g arabinoxylans as AEP/kg) the ileal digestibilities of starch, protein and lipid were decreased by 14.6, 18.7 and 25.8% respectively.

Anti-nutritive effects: Non-starch polysaccharides: Broiler diets

Effects of Complex Carbohydrates on Nutrient Absortion
Copyright © The Nutrition Society 1992


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