Predicting in vivo starch digestibility coefficients in newly weaned piglets from in vitro assessment of diets using multivariate analysis.

DOUCET, Frederic J., WHITE, Gavin A., WULFERT, Florian, HILL, Sandra E. and WISEMAN, Julian (2010). Predicting in vivo starch digestibility coefficients in newly weaned piglets from in vitro assessment of diets using multivariate analysis. British Journal of Nutrition, 103 (09), 1309-1318.

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Official URL: http://dx.doi.org/10.1017/S0007114509993217
Link to published version:: 10.1017/S0007114509993217

Abstract

The study was based on correlating a dataset of in vivo mean starch digestibility coefficients obtained in the immediate post-weaning phase of piglets with a range of dietary in vitro variables. The paper presents a model that predicts (R2 0·71) in vivo average starch digestibility coefficients in the 0·5 small-intestinal region of newly weaned piglets fed cereal-based diets using seven in vitro variables describing starch properties that are fundamentally associated with the quality of feed materials, i.e. hydration, structure and amylolytic digestion. The variables were: Rapid Visco Analyser (RVA; measures the viscosity of materials when sheared under defined hydration and temperature regimens); RVA end viscosity; RVA (gelatinisation) peak viscosity; ΔH (gelatinisation enthalpy that provides an estimate of helical order or degree of crystallinity in starch); water solubility index (WSI; that denotes the amount of soluble polysaccharides released from starch granules to the aqueous phase); grain endogenous amylase (concentration of endogenous α-amylase in cereals, assessed by pasting cereal flours in 25 g of AgNO3, an amylase inhibitor v. water using RVA).

Item Type: Article
Research Institute, Centre or Group: Biomedical Research Centre
Identification Number: 10.1017/S0007114509993217
Depositing User: Rebecca Jones
Date Deposited: 01 Mar 2012 10:26
Last Modified: 01 Mar 2012 10:26
URI: http://shura.shu.ac.uk/id/eprint/4694

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