A survey of anthelmintic resistance in nematodes of sheep in the netherlands
作者:
F.H.M. Borgsteede,
J.J. Pekelder,
D.P. Dercksen,
J. Sol,
P. Vellema,
C.P.H. Gaasenbeek,
J.N. van der Linden,
期刊:
Veterinary Quarterly
(Taylor Available online 1997)
卷期:
Volume 19,
issue 4
页码: 167-171
ISSN:0165-2176
年代: 1997
DOI:10.1080/01652176.1997.9694765
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The prevalence of anthelmintic resistance in nematodes of sheep was surveyed in 1994 on 70 farms in the Netherlands. Anin vitroegg hatch assay, faecal egg count reduction (FECR) 14 days after treatment, and larval cultures were used as methods of investigation. Oxfendazole was tested on 69, ivermectin on 51, and levamisole on 36 farms. The median effective dose (ED50) of thiabendazole could be determined on 64 farms. On 60 farms (94%) the ED50 value was > 0.12 μg ml‐1, which is indicative of the presence of benzimidazole (BZ) resistance. On two farms egg output was too low to do a FECR test. Based on the results of the FECR test, BZ resistance was present on 56 farms (84%), on 2 farms there was a suspicion of resistance and on 9 farms no resistance could be found. No clear indications were found for the presence of resistance against ivermectin or levamisole.
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