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Salmonella Carriage in an Irish Pig Herd: Correlation between Serological and Bacteriological Detection Methods

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Salmonella carriage in pigs represents a serious health problem that undoubtedly contributes to the spread of human disease. Thus, the efficient and reliable testing of farm animals for bacteria such as Salmonella is an important aspect of any efficient control strategy. Serological analysis of 15 meat juice samples detected antibodies against Salmonella in some, but not all, of the animals identified bacteriologically as harboring the pathogen, indicating a lack of correlation between the bacteriological and serological methods used for Salmonella detection. The results suggest that testing by enzyme-linked immunosorbent assay is appropriate at the herd level, with culture methods preferable for individual animal analysis. A novel culture protocol detected Salmonella in the cecal contents of 15 pigs, whereas a method based on the European Standard identified only 9 pigs as being Salmonella -positive. During the study, an unusual finding was the relatively high incidence of Salmonella London carriage in the pigs tested.

Document Type: Research Article

Affiliations: 1: Alimentary Pharmabiotic Centre, Biosciences Institute, University College,and Department of Microbiology, University College, Cork, Ireland 2: Department of Microbiology, University College, Cork, Ireland 3: Dairy Products Research Centre, Teagasc, Moorepark, Fermoy, Ireland 4: Pig Production Department, Teagasc, Moorepark, Fermoy, Ireland 5: Alimentary Pharmabiotic Centre, Biosciences Institute, University College, Cork, Ireland and Dairy Products Research Centre, Teagasc, Moorepark, Fermoy, Ireland

Publication date: December 1, 2004

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    The Journal of Food Protection (JFP) is a refereed monthly publication. Each issue contains scientific research and authoritative review articles reporting on a variety of topics in food science pertaining to food safety and quality. The Journal is internationally recognized as the leading publication in the field of food microbiology with a readership exceeding 11,000 scientists from 70 countries. The Journal of Food Protection is indexed in Index Medicus, Current Contents, BIOSIS, PubMed, Medline, and many others.

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