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Longitudinal survey of the occurrence of Salmonella in pigs and the environment of nucleus breeder and multiplier pig herds in England

Wales, Andrew, McLaren, IM, Bedford, S, Carrique-Mas, JJ, Cook, AJC and Davies, RH (2009) Longitudinal survey of the occurrence of Salmonella in pigs and the environment of nucleus breeder and multiplier pig herds in England VETERINARY RECORD, 165 (22). pp. 648-657.

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Abstract

Epidemiological findings are reported from pig breeding units that were visited repeatedly and sampled intensively for environmental Salmonella contamination. Eight pig breeding units previously associated with Salmonella Typhimurium were visited during up to seven years. Samples from voided faeces, surfaces, fomites and wildlife were cultured. Certain serovars were isolated repeatedly on certain units, whilst others were detected only once or intermittently. A few serovars were isolated consistently on some units but only intermittently on others. There was an association between Salmonella in pens and in their immediate environment. S. Typhimurium was significantly associated with growing pigs. Pens holding breeding stock for production herds were frequently Salmonella-positive. Herds under common ownership showed similar serovar combinations. Cleaning and disinfection was frequently ineffective. Wildlife serovars were typical of the associated premises. On one unit, a low level of Salmonella was attributed to a small herd size, good cleaning and disinfection and good rodent control. The study has shown that breeding herds are susceptible to endemic infections with multiple Salmonella serovars and that cleaning, disinfection and vector control may in many cases be inadequate. Finally, the prevalence of S. Typhimurium may be greater in youngstock, which has important implications for public health.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Veterinary Medicine
Authors :
NameEmailORCID
Wales, Andrewaw0051@surrey.ac.uk0000-0002-8657-3007
McLaren, IMUNSPECIFIEDUNSPECIFIED
Bedford, SUNSPECIFIEDUNSPECIFIED
Carrique-Mas, JJUNSPECIFIEDUNSPECIFIED
Cook, AJCalasdair.j.cook@surrey.ac.ukUNSPECIFIED
Davies, RHUNSPECIFIEDUNSPECIFIED
Date : 28 November 2009
Identification Number : 10.1136/vr.165.22.648
Copyright Disclaimer : Copyright 2009 British Veterinary Association. All rights reserved.
Uncontrolled Keywords : Science & Technology, Life Sciences & Biomedicine, Veterinary Sciences, TYPHIMURIUM INFECTION, PRODUCTION SYSTEMS, SLAUGHTER PIGS, WEANLING PIGS, RISK-FACTORS, SWINE HERDS, PREVALENCE, ENTERICA, SOWS, SEROPREVALENCE
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 09:49
Last Modified : 25 Oct 2017 10:12
URI: http://epubs.surrey.ac.uk/id/eprint/825248

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