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A critical review of Salmonella Typhimurium infection in laying hens.

Wales, Andrew and Davies, RH (2011) A critical review of Salmonella Typhimurium infection in laying hens. Avian Pathology, 40 (5). pp. 429-436.

11 Avian Pathol (2011) 40, 429-436.pdf - Accepted version Manuscript

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Salmonella Typhimurium has been reported to contaminate egg production across the World, but where Salmonella Enteritidis is endemic it is this latter serovar that dominates egg-borne salmonellosis. However, Salmonella Typhimurium is a major foodborne pathogen so it is important to understand how it can impact the microbiological safety of eggs and what serovar-specific control strategies may be appropriate in the future as control over Salmonella Enteritidis continues to improve. To that end, the present review examines the published literature on Salmonella Typhimurium in laying hens and eggs, with particular reference to comparative studies examining different serovars. Experimentally Salmonella Enteritidis is more often isolated from egg contents and seems to adhere better to reproductive tract mucosa, whilst Salmonella Typhimurium appears to provoke a more intense tissue pathology and immune response, and flock infections are more transient. However, it is observed that in many cases the present body of evidence does not identify clear differences between specific behaviours of the serovars Typhimurium and Enteritidis, whether in laying hens, in their eggs, or in the laying environment. It is concluded that further long-term experimental and natural infection studies are needed in order to generate a clearer picture.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Veterinary Medicine
Authors :
Davies, RH
Date : 31 August 2011
DOI : 10.1080/03079457.2011.606799
Copyright Disclaimer : This is an Accepted Manuscript of an article published by Taylor & Francis in Avian Pathology on 31 Aug 2011, available online:
Depositing User : Melanie Hughes
Date Deposited : 24 Oct 2017 12:20
Last Modified : 24 Oct 2017 12:20

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