On the use of marker data to determine the kinetics of the digestive behaviour of feeds


  • John Alan Belward The University of Queensland
  • James S. Hanan The University of Queensland
  • Barbara A. Williams The University of Queensland
  • Walter J. J. Gerrits Wageningen University
  • Mike J. Gidley The University of Queensland




kinetics, transport, digesta, monogastric


A model of the transport process that follows the progress of digesta successively through the small intestine of a monogastric is investigated. The process is multi-phase and multi-constituent, as described in detail by Bastianelli et al. [J. Anim. Sci., 74:1873–1887, 1996]. The model describes the movement of marker substances that are used to obtain data on the interactions between the intestinal sections and digesta with differing levels of soluble fibre. A multi-stage process is modelled by a set of coupled first order linear differential equations. Solutions of steady and initial value problems provide information on the transfer rates of the processes. Properties of the solutions as functions of system parameters are examined. References
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Author Biographies

John Alan Belward, The University of Queensland

Honorary Associate Professor

James S. Hanan, The University of Queensland

Principal Research Fellow, Centre for Nutrition and Food Sciences

Barbara A. Williams, The University of Queensland

Senior Research Fellow, Centre for Nutrition and Food Sciences

Walter J. J. Gerrits, Wageningen University

Animal Nutrition Group

Mike J. Gidley, The University of Queensland

Director, Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation. ARC Centre of Excellence in Plant Cell Walls





Proceedings Computational Techniques and Applications Conference