The effectiveness of acaricidal drugs in bovine psoroptosis

Abstract

The report presents the results of acaricides using from the macrocyclic lactones group and complex drug administration which includes deltamethrin, diflubenzuron and piperonyl butoxide by psoroptic scab of cattle. There was research at the beefproducing farm (Aberdeen Angus breed). It was four groups (n=10 by each). Animals of the 1st experimental group have received «Meradoc» drug (doramectin 1%, subcutaneous introduction, the neck area), 2d experimental group – «Ivermec» drug (ivermectin 1%, 1 ml per 50 kg, subcutaneous introduction, the neck area), 3d experimental group – «Deltsid 7.5» by single dose (15 ml per 100 kg) by the application on skin vertebral from the head to the tail. The 4th group was control without acaricidal treatment. It was found the single using of macrocyclic lactones groups’ drugs were destroyed only the larval, nymphal and imaginal phases of acarian Psoroptes without ticks’ eggs extermination. The scraping was included ticks’ eggs on 7th day after «Deltsid 7.5» drug using, but it wasn’t detected any larval, imaginal phases and ticks’ eggs on the 14th, 21st and 28th days after beginning of animal’s treatment. Moreover, to the 28th days there were registered the hair restoration and the skin in affected areas without compaction and folding. The using of complex drug «Deltsid 7.5» is more effective treatment of psoroptic scab of cattle. This drug has the acaricidal effect on the preimaginal phases Acariformes. There were blocked the enzymes activity which destroy the drug’s effect. To take on the Acariformes resistibility by acaricides it should be control the quality of anti-acaricidal treatments by microscopy of skin scrapings. The recommendation in the case of the positive result’s getting is the treatment alternation.