Evaluación del efecto ectoparasiticida de Azadirachta indica y cipermetrina + metrifonato, para el control de Dermatobia hominis en bovinos.

Abstract

Bovine dermatobiosis is a chronic and ulcerative ectoparasitic disease that affects the skin and subcutaneous tissue of cattle in tropical and subtropical regions. This condition manifests as furuncular myiasis, caused by the lavae of the fly Dermatobia hominis. The present study was conducted with the objective of evaluating the efficacy of biological and chemical therapy for the control of Dermatobia hominis (locally known as “nuche”) in cattle. An experimental study was carried out to assess the use of Neem extract (Azadiracha indica) applied via spray baths using amanual backpack sprayer, and a chemical mixture consisting of 15% cypermethrin + 97 % metrifonate, diluted in one liter of palm oil. A dose of 100 ml of this mixture was topically administetered along the dorsal line of each adult animal using a brush. The goal was to treat and contrl the incidence of Dermatobia hominis in cattle at the vill mariana experimental farm. The study involved 20 animals, divided into two groups. The biological treatment achieved an efficacy of 64%, while the chemical treatment reached 95%. It is concluded that Neem extact possesses bioinsecticidal properties, is effective as a host repellent, and produced satisfactory resuts in cattle under stabled conditions. Likewise, the chemical mixture yielded excellent results, nearing complete control of Dermatobia hominis infestation in the treated animals during the study period.