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Helminth control used by trainers of thoroughbreds in England
  1. C. G. Earle, BVSc, MRCVS1,
  2. H. A. Kington, BVSc, MRCVS1 and
  3. G. C. Coles, MA, PhD, CBiol, FIBiol1
  1. 1 Department of Clinical Veterinary Science, University of Bristol, Langford House, Bristol BS40 5DU

Abstract

A telephone survey was conducted of the methods used to control parasitic worms at 106 thoroughbred training yards. Most of the horses were allowed access to grass and were therefore at risk of infection. The control methods relied primarily on the use of anthelmintics and appeared reasonably successful because only 44 per cent of trainers reported observing clinical signs of nematode infections. They dosed their horses frequently, 40 per cent treating every four to six weeks and 25 per cent treating every seven to eight weeks. New arrivals on yards were usually treated with anthelmintic but the strategies used would be unlikely to prevent the introduction of anthelmintic-resistant nematodes on most yards or to deal with encysted cyathostomes. Trainers were responsible for the design of most control schemes, and only 42 per cent of them based their choice of anthelmintic on veterinary advice.

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