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United States Department of Agriculture

Agricultural Research Service

Title: The Relationship Between Intestinal Persistence and Egg Contamination for Strains of Salmonella Enteritidis and S. Heidelberg

Authors
item Gast, Richard
item Guard, Jean
item Holt, Peter

Submitted to: American Association of Avian Pathologists
Publication Type: Abstract Only
Publication Acceptance Date: February 23, 2005
Publication Date: August 17, 2005
Citation: Gast, R.K., Bouldin, J.G., Holt, P.S. 2005. The relationship between intestinal persistence and egg contamination for strains of salmonella enteritidis and s. heidelberg. Program of American Association of Avian Pathologists Annual Meeting. p.43

Technical Abstract: Egg contamination by Salmonella enteritidis remains a significant public health problem and is the target of a recently proposed FDA regulatory plan. Salmonella heidelberg has also been implicated in egg-transmitted human illness. Intestinal colonization is a necessary precursor to the invasion of reproductive organs and egg contamination, but the relationship between the persistence of Salmonella in the intestinal tract and the likelihood of egg contamination is not clear. In the present study, strains of S. enteritidis and S. heidelberg that had been previously re-isolated from infected hens were more persistent in the intestines of experimentally inoculated chickens than were the original parent strains, and caused more frequent egg contamination, but intestinal persistence and egg contamination were not strongly correlated for any of these strains.

Last Modified: 10/25/2014