Uso inadequado de organofosforados: uma prática de risco para bovinos no Sul do Rio Grande do Sul

In order to determine the cause of the sudden increase in the number of outbreaks of organophosphate poisoning, nine outbreaks diagnosed in cattle were analyzed at the Laboratorio Regional de Diagnostico, Faculdade de Veterinaria, Universidade Federal de Pelotas (LRD/UFPel) between November 2013 and February 2014. In all outbreaks the animals were treated with concentration from two to 151 times higher than the concentration recommended of diazinon for tick treatment. The incorrect route of application, and the intense heat recorded at the time of the outbreaks also contributed to the large number of poisoning.