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Measurement of caecal outflow rate in ponies using Chromium mordanted feeds

  • J. J. Hyslop (a1), B.M.L. McLean (a1), M. J. S. Moore-Colyer (a2), A. C. Longland (a3), D. Cuddeford (a1) and T. Hollands (a4)...

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Estimates of digesta passage through specific segments of the alimentary tract are a vital component of modelling approaches which attempt to quantitatively partition digestive processes in equines. This study reports results from three studies where digesta passage of Chromium (Cr) mordanted feeds was determined in the caecum of ponies.

Caecal outflow rates were determined during three in vivo apparent digestibility studies conducted using three caecally-fistulated ponies as described by Moore-Colyer et al, (1999) for studies 1 and 2; and McLean et al, (1999) for study 3. Pony basal diets consisted of unmolassed sugar beet pulp (USBP), hay cubes (HC) or a 2:1 mix of oat hulls:naked oats (OHNO) in study 1; a 1:1 mix of USBP:HC (USHC) in study 2 and either 100% HC or one of 3 diets consisting of a 1:1 HC:barley mix where the barley was either rolled (RBHC), micronised (MBHC) or extruded (EBHC) in study 3.

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McLean, B.M.L., Hyslop, J.J., Longland, A.C., Cuddeford, D. and Hollands, T. 1999. In vivo apparent digestibilitiy in ponies given rolled, micronised or extruded barley. Proc. BSAS Winter Meeting.
Moore-Colyer, M.J.S, Hyslop, J.J, Longland, A.C. and Cuddeford, D. 1999. In vivo apparent digestibility of proximate constituents and non-starch polysaccharides in ponies offered botanically diverse fibre based diets. Proc. BSAS Winter Meeting.

Measurement of caecal outflow rate in ponies using Chromium mordanted feeds

  • J. J. Hyslop (a1), B.M.L. McLean (a1), M. J. S. Moore-Colyer (a2), A. C. Longland (a3), D. Cuddeford (a1) and T. Hollands (a4)...

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