Chapter 48 - Salmonella and Impact on Egg Production

Abstract

There is a strong association between the incidence of human illness and the prevalence of Salmonella in commercial egg-producing poultry. Although most egg-associated disease is attributed to Salmonella Enteritidis, other serovars are sometimes implicated. Deposition of S. Enteritidis within the edible contents of eggs results from colonization of reproductive tissues in infected hens. Environmental conditions influence opportunities for Salmonella introduction, transmission, and persistence in laying flocks. Environmental influences are shaped by the various housing systems used in egg production. Substantial public and private resources have been invested in comprehensive S. Enteritidis testing and risk reduction programs for egg-laying chickens. A strategy involving multiple interventions throughout the egg production cycle is recommended as the most effective approach for controlling S. Enteritidis. Controlling temperature is critical for restricting Salmonella growth inside eggs.