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Pre-calving feeding of rumen-protected rice bran to multiparous dairy cows improves recovery of calcaemia after calving

Published online by Cambridge University Press:  07 September 2016

Javier Martín-Tereso*
Affiliation:
Trouw Nutrition Research and Development, Boxmeer, The Netherlands Wageningen Institute of Animal Sciences, Wageningen University and Research Centre, Wageningen, The Netherlands
Holger Martens
Affiliation:
Department of Veterinary Physiology, Faculty of Veterinary Medicine, Free University of Berlin, Berlin, Germany
Carolin Deiner
Affiliation:
Department of Veterinary Physiology, Faculty of Veterinary Medicine, Free University of Berlin, Berlin, Germany
Harmen van Laar
Affiliation:
Trouw Nutrition Research and Development, Boxmeer, The Netherlands Wageningen Institute of Animal Sciences, Wageningen University and Research Centre, Wageningen, The Netherlands
Leo A. den Hartog
Affiliation:
Trouw Nutrition Research and Development, Boxmeer, The Netherlands Wageningen Institute of Animal Sciences, Wageningen University and Research Centre, Wageningen, The Netherlands
Martin W A Verstegen
Affiliation:
Wageningen Institute of Animal Sciences, Wageningen University and Research Centre, Wageningen, The Netherlands
*
*For correspondence; e-mail: javier.martin-tereso@trouwnutrition.com

Abstract

Dairy cows can have different degrees of hypocalcaemia around calving. Lowering dietary Ca availability before calving can prevent it. Rice bran, treated for lower rumen degradability of phytic acid can reduce dietary availability of Ca. During 3 periods of 3 weeks, 113 multiparous cows calved in a single close-up group, which was fed first a control diet, then 140 g/kg DM of rumen-protected rice bran, and at last the control diet again. Cows joined the group 3 weeks before expected calving date and left it at calving. Blood samples were taken weekly before parturition and 0, 6 and 12 h after calving, as well as 3 and 28 d in lactation. Serum was analysed for Ca, Mg, and P. Rice bran introduction produced a transient serum Ca decrease. Rice bran feeding reduced serum P and its withdrawal reduced serum Mg. Serum Ca at calving, nadir of serum Ca and serum Ca the first 3 d after calving was higher in cows calving during rice bran feeding. Serum P decreased less and recovered faster after calving when cows had been fed rice bran. Rumen-protected rice bran reduced dietary availability of Ca and induced adaptation of Ca metabolism resulting in improved Ca and P homoeostasis at calving.

Information

Type
Research Article
Copyright
Copyright © Proprietors of Journal of Dairy Research 2016 

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