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To examine feed contamination rates with Salmonella, the diversity of serovars and the antimicrobial resistance of isolates from animal feedingstuffs in Great Britain, and to compare Salmonella strains found in animal feed and in livestock, data collected under voluntary and statutory Salmonella surveillance during the period 1987 to 2006 were analysed retrospectively. The feed contamination rate decreased from 3.8 per cent in 1993 to 1.1 per cent in 2006. A total of 263 Salmonella serovars were recovered: S Mbandaka (11.2 per cent), S Tennessee (10.4 per cent), S Senftenberg (8.4 per cent), S Agona (6.4 per cent), S Montevideo (6.4 per cent) and S Ohio (3.1 per cent) were the most prevalent. S Typhimurium was recovered at a proportion of 1.6 per cent from raw ingredients and 2.4 per cent from finished feed, while S Enteritidis was recovered at a proportion of 0.5 per cent from raw ingredients and 0.6 per cent from finished feed; 14.1 per cent of the isolates were resistant to at least one antimicrobial, and 1.9 per cent were multiresistant. There was no evidence of a statistical association (P<0.05) between the top 10 serovars recovered from feed and from livestock.

Type

Journal article

Journal

The Veterinary record

Publication Date

12/2009

Volume

165

Pages

681 - 688

Addresses

Centre for Epidemiology and Risk Analysis, Veterinary Laboratories Agency - Weybridge, New Haw, Addlestone, Surrey KT15 3NB. c.papadopoulou@vla.defra.gsi.gov.uk

Keywords

Animals, Salmonella, Salmonella Infections, Animal, Serotyping, Colony Count, Microbial, Microbial Sensitivity Tests, Sentinel Surveillance, Retrospective Studies, Food Microbiology, Food Contamination, Drug Resistance, Bacterial, Animal Feed, United Kingdom