Fatores que interferem na neosporose em Minas Gerais

Abstract

Epidemiological Characteristics of Neospora caninum (Apicomplexa: Toxoplasminae) were investigated in dairy cattle in Minas Gerais, by a commercial ELISA test and questionnaires submitted to those responsible for the herd sampled, the time of collection of blood samples from animals in 1997. The data obtained by serology were correlated with responses from questionnaires, in order to determine the frequency of infection in herds producing milk type C and A / B, noting factors that might predispose to infection by the parasite. Still, infection with N. caninum was correlated with infections caused by viruses BHV 1 and BVD virus by, and the prevalence of infection was determined perasito in dairy cows vaccinated against these two viral agents. Other searches were carried out as the search for other hosts to parasitism dogs in research has been done, as the search for other hosts to the parasite dogs, which were tested by a commercial indirect immunofluorescence test, sera maned wolves (Chysocyon brachyurus) and dog-to-kill (Cerdocyn thous), infection of gerbils (Meriones unguiculatus), to evaluate the clinical neosporosis, maintenance of tachyzoites of N. caninum in vivo and maintenance of Toxoplasma on monolayers of VERO cells. In addition, oral infection was previously seronegative for dogs with the parasite nerve tissue of cows seropositive to N. caninum and with a solid history of miscarriages, the isolation of oocysts in feces of dogs