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Farm animal practice
Changing patterns of parasitism in sheep
  1. Mike Taylor

    Mike Taylor graduated from Glasgow in 1976. He is currently a veterinary consultant based at the Food and Environment Research Agency (FERA) in York, a visiting professor of veterinary parasitology at the Royal Veterinary College and editorin-chief of the Journal of Veterinary Parasitology. He is a diplomate of the European Colleges of Veterinary Parasitology and Small Ruminant Health Management.


There have been noticeable changes in the epidemiology of many common sheep parasites over the past few years. It is not clear whether this reflects changes in sheep management and production and the sheep industry itself, the effects of climate change, the overuse of antiparasitics and selection for resistance (treatment practices and selection pressures), or, indeed, a function of all these factors. However, it is apparent that the implementation of parasitic control strategies needs to take these and other issues into account and, where necessary, such programmes will require appropriate modifications. This article discusses the affect of each factor and its impact on the prevalence of endo- and ectoparasitism in sheep.

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