Evaluation of Scalibor® deltamethrin collar chronic exposure in dogs.

Deltamethrin is a pesticide used worldwide with several applications in the control of nuisance arthropods in homes, agriculture, against ectoparasites in dogs and livestock. Recent studies indicate that deltamethrin can induce cardiotoxicity. Therefore, this study aimed to evaluate the toxicity of deltamethrin in dogs through exposure to commercial collars over 8 months.

Serum butyrylcholinesterase activity in healthy dogs with and without exposure to diazinon.

Background: Cholinesterase is a biomarker for poisonings by anticholinesterase agents, but its reference values are scarce, and possible interaction with collars containing parasiticides has not been studied.

Objectives: We aimed to evaluate the serum cholinesterase activity of healthy dogs without a history of contact with anticholinesterase agents and healthy animals exposed to commercial collars containing organophosphate.

Methods: Ninety-nine dogs were used and included healthy animals without recent exposure to anticholinesterase agents and healthy animals previously exposed to diazinon collars.