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Study of the behaviour, digestive efficiency and gut transit times of crib-biting horses
  1. P. D. McGreevy, BVSc, PhD, MRCVS1,
  2. A. J. F. Webster, MA, VetMB, PhD, MRCVS1 and
  3. C. J. Nicol, BA, PhD1
  1. 1 Department of Clinical Veterinary Science, University of Bristol, Langford House, Langford, Bristol BS18 7DU
  1. Dr McGreevy's present address is Department of Animal Science (B19), Faculty of Veterinary Science, University of Sydney, NSW 2006, Australia


The spontaneous behaviour and the apparent digestibility of dry matter and fibre and transit times of digesta were compared in four normal horses and four crib-biters. A technique was developed for measuring total gut transit times (TGTT) by using single-stool analysis of the passage of radio-opaque polyethylene markers. Longer TGTT were recorded in the crib-biters than in the normal horses but the orocaecal transit times did not differ. The crib-biters rested less than the normal horses.

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