A comparison of in vitro tests and a faecal egg count reduction test in detecting anthelmintic resistance in horse strongyles

Citation
J. Craven et al., A comparison of in vitro tests and a faecal egg count reduction test in detecting anthelmintic resistance in horse strongyles, VET PARASIT, 85(1), 1999, pp. 49-59
Citations number
27
Categorie Soggetti
Veterinary Medicine/Animal Health
Journal title
VETERINARY PARASITOLOGY
ISSN journal
03044017 → ACNP
Volume
85
Issue
1
Year of publication
1999
Pages
49 - 59
Database
ISI
SICI code
0304-4017(19990816)85:1<49:ACOIVT>2.0.ZU;2-9
Abstract
This study reports a comparison between faecal egg count reduction test (FE CRT), egg hatch assay (EHA) and larval development assay (LDA) for detectin g anthelmintic resistance in equine strongyles. Resistance to benzimidazoles was demonstrated in 33 of 42 (79%) farms teste d by FECRT and in 32 (62%) of the 52 farms tested by EHA. As the reference strain used was not fully susceptible to benzimidazoles it was not possible to determine the level of resistance by LDA. Pyrantel resistance was indicated on three of 15 farms by faecal egg count reduction. Resistance was also indicated by LDA for one of these farms. In addition resistance was indicated by LDA on two more farms that were not te sted by FECRT. Further testing is needed to confirm if these findings are t ruly indicative of resistance. Generally, correlations between the tests were poor and it was not possible to use the outcome of one test to predict the outcome of another. (C) 1999 Elsevier Science B.V. All rights reserved.