Therapeutic effects of oral fluralaner in pet rabbits with severe sarcoptic mange (Sarcoptes scabiei)
2022
Singh, Shanker K. | Jaiswal, Amit K. | Kumari, Sanju | Gaur, Ruchi Singh | Śarmā, Prabhā | Khushboo, Richa | Jaiswal, Manu
Sarcoptic mange is one of the most severe, highly contagious, and fatal ectoparasitic infestations of rabbits. Fluralaner, an isoxazoline class of oral ectoparasiticide, is considered as a very potent acaricide. The present study aimed to evaluate the therapeutic efficacy of oral fluralaner in pet rabbits with severe spontaneous Sarcoptes scabiei infestation. A total of eight un-neutered pet rabbits, tested positive for S. scabiei by microscopy of skin scrapings, were enrolled. Seven rabbits had severe clinical infestation (score 5), while remaining one rabbit had moderate disease clinical signs (score <3). A single oral dose equivalent to 25 mg/kg of fluralaner was administered to each rabbit. On day 14 post-therapy, marked improvements in the skin lesions were observed; severely infested rabbits had a clinical score of 3, while the moderately infested rabbit had a score of 1. However, none of the rabbits tested negative for S. scabiei. On day 30 post-therapy, complete clinical recovery was recorded in all rabbits (Score 0), but, a complete parasitological clearance was not recorded except to the moderately infested rabbit. All rabbits were tested negative for S. scabiei on day 45 post-therapy. Therefore, a single oral dose of fluralaner at a 25 mg/kg was found to be effective in the treatment of severe sarcoptic mange in pet rabbits and no additional topical or systemic medications were needed. Further studies in a larger number of individuals with a bigger spectrum of disease severities (i.e. more moderate/mild) are needed to comprehensively document the safety and efficacy of this drug in mangy rabbits.
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