Efficacy and duration of action of oral fluralaner and spot‐on moxidectin/imidacloprid in cats infested with Lynxacarus radovskyi
2016
Han, Hock Siew | Noli, Chiara | Cena, Tiziana
BACKGROUND: Lynxacarus radovskyi has been observed in cats in Malaysia; previously treatment with fipronil and moxidectin/imidacloprid spot‐on has been described. OBJECTIVES: To compare the efficacy of two spot‐on treatments of moxidectin/imidacloprid, two weeks apart to a single oral dose of fluralaner against Lynxacarus radovskyi and evaluate time to re‐infestation. METHODS: Thirty cats were assigned to three groups of ten cats each. Group 1 received one 250 mg fluralaner tablet. Group 2 received two doses of moxidectin/imidacloprid spot‐on two weeks apart. Group 3 consisted of untreated controls. For each cat, three plucks of about 50 hairs each were collected from three sites (dorsal neck, lateral thigh and perineal/tail region) for a total of nine pluckings every two weeks. Severity of infestation was scored from 0 (no parasite), to 1 (only nonhatched eggs), 2 (both hatched and nonhatched eggs), 3 (<50 mites) and 4 (>50 mites). Efficacy was compared between treatment groups and over time in the same group, and results analysed statistically. Re‐infestation was defined as the identification of new eggs or mites on hair pluckings. RESULTS: Moxidectin/imidacloprid spot‐on and oral fluralaner achieved 100% eradication within 28 days. No significant difference was observed between groups 1 and 2; re‐infestation occurred by Day 56 in both treatment groups. CONCLUSION: A single dose of oral fluralaner or two moxidectin/imidacloprid spot‐on treatments two weeks apart are efficacious in the eradication of L. radovskyi in cats and able to prevent re‐infestation for at least 42 days post‐treatment.
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