Status de parasitas gastrintestinais em ovinos no estado de Rondônia

Abstract

The objective of this study was to evaluate the status of gastrointestinal parasites in a group of sheep, in the state of Rondônia. The research was carried out in a commercial herd in the Municipality of Vilhena, RO. Sheep Santa Inês crossbred of different sexes (males and females) and categories (lamb, sheep and lamb) were used, from which stool samples were collected monthly from the rectal bulb and analyzed by counting eggs per gram of feces (OPG) and oocysts per gram of feces (OOPG). It was also carried out the coproculture of this material for the identification of helminth and protozoan species. The environment in terms of rainfall, relative humidity and temperature was evaluated over the study period. The variables were analyzed descriptively. The relative humidity and rainfall increased as a function of the evaluation periods, while the ambient temperature decreased. The sheep were infected with helminths, with higher counts in the months of October and November. The genera of helminths identified in the samples collected were Haemonchus spp., Strongyloides spp. and Trichostrongylus spp. Oocysts of Eimeria spp. were verified in all animals evaluated independently of the animal category. There were differences in the incidence of helminths and protozoa as a function of the animal category and with the advancement of the evaluation period lambs represented the category most susceptible to parasitism.