Immunoprophylaxis as a method to help reduce the incidence of Salmonella infection in swine

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2001-01-01
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Lindner, Thomas
Springer, Sven
Steinbach, Günther
Selbitz, Hans-Joachim
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International Conference on the Epidemiology and Control of Biological, Chemical and Physical Hazards in Pigs and Pork
Iowa State University Conferences and Symposia

The SafePork conference series began in 1996 to bring together international researchers, industry, and government agencies to discuss current Salmonella research and identify research needs pertaining to both pig and pork production. In subsequent years topics of research presented at these conferences expanded to include other chemical and biological hazards to pig and pork production.

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Swine reared for fattening which were clinically proven to have salmonellosis (S. typhimuriwn) were immunized with a S. typhimurium live vaccine to prevent clinical disease and reduce the level of infection amongst the swine. To assess the outcome of vaccination the ileocaecal lymph nodes of the swine were removed at the time of slaughter and cultures set up to establish the presence of salmonella. In addition, serum samples were taken and assayed for antibodies to S. typhimurium. Use of the vaccine prevented animals from developing clinical disease and resulted in a marked reduction in the isolation of S. typhimurium from the ileocaecal lymph nodes of the swine at slaughter and in the number of animals with high antibody value (≥40 OD%).

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