Ciência Animal Brasileira (Oct 2010)
RESISTÊNCIA ANTI-HELMÍNTICA EM CAPRINOS NO MUNICÍPIO DE MOSSORÓ, RN
Abstract
The Brazilian Northeast area is known for the caprineculture,whose main problem is the gastrointestinal nematodes, and thecontrol of the parasites has been jeopardized by the anthelminticresistance. The purpose of this study was to verify the sensibilityof the goat nematodes to the activity of the substances ivermectin1% and albendazole 10%. The work was carried out in 30 goatherds located in the city of Mossoró, Rio Grande do Norte, Brazil,within January and November, 2008. In each property, 45 animalswere selected and divided into three groups (one control and twotreatments). The geographical coordinates of all the properties wereobtained by GPS. The obtained data were analyzed by the statisticalprogram RESO. The animals received the vermifude and 10 daysafter-treatment feces were collected. In the studied properties, theHaemonchus contortus showed greater prevalence in all the treatedgroups, 90% of the helmints population was resistant to albendazoleand 36.6% to ivermectina. Trichostrongylus sp. was found in 70%of the properties and its percentile of the helmint population resistantto ivermectina and to albendazole was of 33.3% and 42.8%,respectively. The reduction in the egg counting in the feces (RECF)after 10 days of treatment with ivermectina and albendazole variedwithin 43% and 100%, and within 29% to 100%, respectively. Theprofile of the properties demonstrated that the anthelmintic mostcommonly used were from the following groups: benzimidazol(63.3%), ivermectin (33.3%), and imidazol (3.3%).
