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Prevalence of patent Strongyloides westeri infections in Thoroughbred foals in 2014

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Abstract

The prevalence of patent Strongyloides westeri infections was determined by examination for eggs in fecal samples collected from 513 Thoroughbred (TB) foals between February 25 and June 3, 2014. The study was conducted with 244 colts and 269 fillies from 11 well-managed farms in Central Kentucky. Foals ranged from 17 to 117 days of age and had never been dewormed. The mean prevalence of patent S. westeri infection was 30 % (156/513 foals). This prevalence was substantially greater than historical reports from the same sampling area during the late 1990s and early 2000s. It is hypothesized that this change is attributable to diminished use of ivermectin in foals due to concerns about macrocyclic lactone resistance in Parascaris equorum.

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Acknowledgments

This investigation (paper no. 14-14-059) was made in connection with a project of the University of Kentucky Agricultural Experiment Station and is published with the approval of the director. Research in the animals used in the study was approved by the University of Kentucky Institutional Animal Care and Use Committee (IACUC) under Protocol 2008–0257. Appreciation is expressed for the immense cooperation of persons associated with horse farms where this research was done.

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Authors and Affiliations

  1. Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY, 40546-0099, USA

    E. T. Lyons & S. C. Tolliver

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  1. E. T. Lyons
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  2. S. C. Tolliver
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Correspondence to E. T. Lyons.

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Lyons, E.T., Tolliver, S.C. Prevalence of patent Strongyloides westeri infections in Thoroughbred foals in 2014. Parasitol Res 113, 4163–4164 (2014). https://doi.org/10.1007/s00436-014-4088-1

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  • DOI: https://doi.org/10.1007/s00436-014-4088-1

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