Levantamento soroepidemiológico para coronavírus respiratório e da gastroenterite transmissível e dos vírus de influenza H3N2 e H1N1 em rebanhos suínos no Brasil.

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Development of an ELISA test for Salmonella serological monitoring in Brazil

EMBRAPA/CNPSA developed an ELISA test based on LPS antigens from Salmonella Typhimurium. After the optimal dilution determination of the test components, four sera were chosen as controls. The interplate variation was controlled by a coefficient correlation between standard and daily curves of control sera and the coefficient variation of sample sera triplicates. The cut-off was determined by a dispersion analysis in a nursery piglet population proved to be salmonellae negative. The test performance was evaluated in experimentally and naturally S. Typhimurium infected pigs and in animals vaccinated with other Salmonella serovars. The seroconversion was observed after two weeks post inoculation in experimentally infected and vaccinated animals. In naturally infected animals, which were sampled twice during the finishing period, at the first sampling 75 % of pigs were eliminating salmonellae in feces and 25 % were positive in the ELISA. At the second sampling 76.9 % became serologically positive. These results suggest that the developed test can be used for Salmonella Typhimurium monitoring programs in swine

Formulação de um índice (IRA) para aplicação na caracterização e classificação de rebanhos com rinite atrófica.

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Estudos ecopatológicos das doenças respiratórias dos suínos: prevalência e impacto econômico em sistemas de produçao dos Estados de Santa Catarina, Rio Grande do Sul e Paraná.

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Classificação macroscópica dos graus de atrofia dos cornetos na rinite atrófica dos suínos.

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Perdas economicas decorrentes de diferentes graus de severidade e rinite atrofica em suinos.

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Impacto de doenças respiratórias dos suínos nos sistemas de produção do Estado de Santa Catarina.

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Utilização da contagem de tosse e espirro como indicadores da ocorrência e severidade de pneumonias e rinite atrófica, respectivamente.

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Custo de um surto de pleuropneumonia suína.

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