title: An outbreak of haemonchosis associated with anthelmintic resistance in sheep.
abstract: An outbreak of haemonchosis associated with anthelmintic resistance was recorded in a flock of 150 crossbred lambs. Closantel and ivermectin were 100% effective against Haemonchus contortus while fenbendazole and morantel reduced faecal egg counts by 87 and 29%, respectively. Levamisole showed an efficacy of 95%. At double the recommended dose (10 mg kg-1), fenbendazole had an efficacy of 99% against H. contortus infection. This appears to be the first report of an outbreak of haemonchosis associated with fenbendazole and morantel resistance in a strain of H. contortus in sheep.
authors.affiliation: Department of Veterinary Parasitology, CCS Haryana Agricultural University, Hisar, India.
authors.forename: C L
authors.initials: CL
authors.lastname: Yadav
authors.forename: R P
authors.initials: RP
authors.lastname: Uppal
authors.forename: S
authors.initials: S
authors.lastname: Kalra
mesh_terms: D000818:Animals; D000871:Anthelmintics / Q000494:pharmacology / Q000627:therapeutic use*; D004196:Disease Outbreaks / Q000662:veterinary*; D004351:Drug Resistance; D006188:Haemonchiasis / Q000188:drug therapy / Q000453:epidemiology / Q000662:veterinary*; D006189:Haemonchus / Q000187:drug effects*; D011897:Random Allocation; D012756:Sheep; D012757:Sheep Diseases / Q000188:drug therapy* / Q000453:epidemiology
chemical_list: D000871:Anthelmintics