Salmonella serovars and their antimicrobial resistance in British turkey flocks in 1995 to 2006

Avian Pathology : Journal of the W.V.P.A
C PapadopoulouS J Evans

Abstract

Serovar and antimicrobial resistance data from the scanning surveillance of British turkey flocks for Salmonella between 1995 and 2006 were analysed and compared with prevalence data from other livestock and animal feed. A total of 2753 incidents of 57 different serovars were reported. The five most prevalent serovars were Salmonella Typhimurium (20.8%), Salmonella Newport (14.7%), Salmonella Derby (10.6%), Salmonella Indiana (8.3%) and Salmonella Agona (6.4%). S. Typhimurium reports peaked in the mid- to late 1990s; this occurred in parallel with the S. Typhimurium DT104 epidemic in other livestock species. S. Enteritidis reports peaked in mid- to late 1990s, followed by a considerable decrease after 2000, which was also noted in flocks of domestic fowl. S. Newport, Salmonella Montevideo, Salmonella Senftenberg and Salmonella Binza occurred in marked clusters, indicating that they were introduced into one or more flocks at a certain time (i.e. via contaminated feed or infected 1-day-old chicks). A proportion of 43.1% of the reported Salmonella isolates were resistant to at least one antimicrobial, while 17.7% were multi-resistant. No isolates were resistant to ciprofloxacin or to the third-generation cephalosporins ceftazidime...Continue Reading

References

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