Journal
VETERINARY PARASITOLOGY
Volume 248, Issue -, Pages 4-9Publisher
ELSEVIER
DOI: 10.1016/j.vetpar.2017.10.012
Keywords
Triclabendazole; Drug-resistant; Efficacy
Categories
Funding
- Meat and Livestock Australia (MLA)
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Information on the susceptibility status of Fasciola hepatica isolates is lacking in the literature, even for those isolates considered to be laboratory reference strains. Four controlled efficacy studies were conducted on two Fasciola hepatica isolates from Australia, viz. 'Oberon' and 'Sunny Corner' with treatment at either 2, 6 or 10 weeks post-infection (wpi) as defined in each study. Fluke burdens and examination of livers occurred at necropsy in weeks 12 (Study 1) or 13 (Studies 2, 3 and 4) post-infection. The triclabendazole (TCBZ) resistance status of the Oberon isolate was confirmed in 6 and 10-week old F. hepatica, utilizing the drug alone (Fasinex; 71.5% and 31.1%, respectively) and in combination with oxfendazole (Flukazole C; 79.9% and 0%, respectively). The susceptibility of this isolate to albendazole, as well as salicylanilide and sulphonamide drugs was confirmed. The Sunny Corner isolate was confirmed as susceptible to TCBZ (> 99% all stages) and closantel (> 90% at >= 6 wpi).
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