Efficacy of ivermectin in calves in a farm occurring sudden-death type of strongyloidosis
2005
Almeida, M. A. O.(Federal University of Bahia, Bahia (Brazil) | Usa, C.Prince of Songkla University, Songkla (Thailand) | Ura, S.Kyodoken Institute, Kyoto (Japan) | Taira, N.National Institute of Animal Health, Kagoshima-shi (Japan) | Taira, K.Ibaraki University, Ibaraki (Japan))
A field study of an anthelmintic evaluation against Strongyloides papillosus (SPL) infection in calves was carried out at a farm afflicted with sudden-death. Thirty-six calves with 15800 to 191200 SPL eggs per gram of faeces (EPG) were subcutaneously injected at least once with ivermectin at 0.1 mg or 0.2 mg/kg body weight (BW). After the medication, 2 calves died, one after 4 and the other after 17 hrs. However, the other calves showed EPG reductions ranging from 94.4 % to 100 % at 3 days after medication. Ivermectin injected once with the dose of 0.1 mg/kg or 0.2 mg/kg BW resulted in a SPL-EPG reduction and also had a restorative effect against the sudden-death type of strongyloidosis.
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