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Multiple and multigeneric anthelmintic resistance on a sheep farm in Malaysia
S Sivaraj1, P Dorny, J Vercruysse
1Institute of Advanced Studies, University of Malaya, Kuala Lumpur, Malaysia.
Veterinary Parasitology
|October 1, 1994
Abstract:
The anthelmintic efficacy of benzimidazoles, levamisole, closantel, ivermectin and moxidectin was evaluated on an institutional farm in Malaysia using faecal egg count reduction tests, controlled slaughter trials and an in vitro egg hatch assay. The results of this study indicated simultaneous resistance of Haemonchus contortus against benzimidazoles and ivermectin and of Trichostrongylus colubriformis against benzimidazoles and levaminsole on the same farm. Moxidectin was effective against the ivermectin resistant H. contortus.