SOROEPIDEMIOLOGIA E FATORES ASSOCIADOS À TRANSMISSÃO DO Toxoplasma gondii EM SUÍNOS DO NORTE DO PARANÁ

Devido a importância do suino como fonte de infeccao da toxoplasmose humana e aos problemas reprodutivos gerados por esta enfermidade, objetivou-se tracar o perfil soroepidemiologico e os fatores associados a transmissao do Toxoplasma gondii no rebanho de suinos da regiao Norte do Parana. Coletaram-se amostras de 521 animais (324 matrizes, 157 marras e 40 cachacos), de 22 propriedades suinicolas. Foi aplicado um questionario epidemiologico para verificar as caracteristicas em relacao aos manejos adotados. Realizou-se Imunofluorescencia Indireta (IFI) para deteccao de anticorpos anti-T. gondii (IgG) e considerou-se positivas as amostras que apresentaram titulo ³ 64. De 521 amostras de soro analisadas pela IFI, resultaram em 15,35% reagentes (80/521), sendo 54 (10,37%) matrizes, 20 (3,83%) marras e seis (1,15%) cachacos. A analise das variaveis evidenciou que o sistema de criacao intensivo foi um fator de protecao para a presenca de T. gondii. Entretanto, o acesso de outros animais ao cocho de racao e ao reservatorio de agua, a utilizacao do bebedouro tipo canaleta, presenca de lâmina d’agua nas baias e a existencia de areas alagadicas, foram fatores que contribuiram para a infeccao pelo T. gondii. Serumepidemiology and associated factors on swine transmission of Toxoplasma gondii at Northern Parana – Brazil Abstract Due to the importance of swine as an infection source of toxoplasmosis to man and the reproductive problems that this disease causes, it was defined the prevalence and the factors associated with the transmission of Toxoplasma gondii in swine herds of northern Parana State. A total of 521 serum samples (324 sows, 157 gilts e 40 boars) from 22 herds were analyzed and an epidemiological questionnaire was applied to obtain the management employed in these properties. The indirect immunofluorescence (IFAT) test was performed to detect anti-T. gondii antibodies (IgG) and titers ³ 64 were considered positive. From the 521 analyzed serum samples, 15.35% (80/521) were reactive for the IFAT test – 54 (10.37%) sows, 20 (3.83%) gilts and 6 (1.15%) boars. The statistical analysis has shown that the intensive management system is a protective factor for T. gondii infection. However, the access of other animals to the water and food reservoir, the channel’s water-thought, the pens with water-blade and the presence of wet areas were factors which contributed to wards the infection by T. gondii.