Journal
VETERINARY PARASITOLOGY
Volume 201, Issue 3-4, Pages 204-206Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.vetpar.2014.02.023
Keywords
Dog; Afoxolaner; Curative efficacy; Speed of kill; Ctenocephalides felis
Categories
Funding
- Merial Limited, GA, USA
Ask authors/readers for more resources
The speed of kill of afoxolaner against experimental infestations by Ctenocephalides fells was evaluated after oral administration of afoxolaner in a soft chew (NEXGARD((R))) at a dose to achieve 2.5 mg/kg bodyweight. Forty beagles were allocated to two treatment groups. Dogs in Treatment Group 1 were untreated controls. Dogs in Treatment Group 2 were treated on Day-0 with afoxolaner, according to their pre-treatment bodyweight. All dogs were infested with approximately 100 C. felis on Day-1. Live fleas were counted upon removal at 5 time points after treatment (i.e., 2, 4, 8, 12 and 24 h after treatment). For each time point, counts were performed on 4 dogs from each of the treated and the untreated groups. Early curative flea killing efficacy was evaluated with respect to the untreated control group. The afoxolaner treated group had significantly fewer fleas than the untreated control group at 8, 12, and 24 h (p < 0.001). The percent efficacies of orally administered afoxolaner were 15.0%, 87.8%, 99.5%, 100.0%, and 100.0% at 2, 4, 8, 12, and 24h, respectively. In this study, afoxolaner began killing fleas by 2 h after treatment with increasing efficacy at subsequent time points and had >99.5% efficacy at 8, 12, and 24h after treatment demonstrating an early onset of action. (c) 2014 The Authors. Published by Elsevier B.V.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available