AAEP Annual Convention Las Vegas 2009
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Field Survey on the Efficacy of Four Anthelmintic Drugs Against Horse Cyathostomin Infection in Europe

Author(s):

D. Traversa, P. Milillo, H. Barnes...

In: AAEP Annual Convention - Las Vegas, 2009 by American Association of Equine Practitioners
Updated:
DEC 09, 2009
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1. Introduction
In the past, the selection pressure generated by erroneous use or even abuse of anthelmintics has lead to the spread of drug-resistant parasitic populations. This is particularly true for horse cyathostomins; recent evidence of reduced efficacy has been reported in Europe, the United States, and Latin America.

2. Materials and Methods
To increase knowledge of the efficacy of major anthelmintics (i.e., fenbendazole, pyrantel, ivermectin, and moxidectin) currently used in Europe, 1704 horses were evaluated: 988 horses from 60 properties in Italy, 396 horses from 22 properties in the United Kingdom, and 320 horses from 20 properties in Germany. Four or more cyathostomin-infected horses were allocated to each treatment group. Fecal samples were collected on the day of treatment and 14–16 days after treatment for the egg-count reduction test. [...]

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Affiliation of the authors at the time of publication

Faculty of Veterinary Medicine, University of Teramo, 64100, Italy (Traversa, Milillo); Fort Dodge Animal Health, Southampton SO304QH, United Kingdom (Barnes); University of Veterinary Medicine, Hannover, D-30559, Germany (von Samson-Himmelstjerna, Schurmann, Demeler); Faculty of Veterinary Medicine, University of Bari, Valenzano, 70010, Italy (Lia); Faculty of Veterinary Medicine, University of Pisa, 56126, Italy (Perrucci); Faculty of Veterinary Medicine, University of Padua, Legnaro 35020 Italy (Frangipane di Regalbono); Faculty of Veterinary Medicine, University of Udine, Italy (Beraldo); and Fort Dodge Animal Health, Princeton, New Jersey, 08543, (Cobb, Boeckh)

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