Surveillance and antimicrobial resistance of Salmonella strains isolated from slaughtered pigs in Spain

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Abstract

The prevalence of and the antibiotic resistance shown by Salmonella isolated from pigs in Andalusia (southern Spain) is reported. Salmonella enterica was recovered from 40 (33%) of 121 sampled herds, and a total of 65 isolates were serotyped. The most common Salmonella serotypes were Typhimurium and Rissen (30.7% each); others included Derby (9.2%). Brandenburg (9.2%). Newport (7.7%), Bredeney (4.6%), Anatum (3.0%), Hadar (1.5%), and Goldcoast (1.5%). One strain (1.5%) belonging to the monophasic variant of the Typhimurium serotype (Salmonella 4,5,12:i:-) was also detected. Definitive phage type (DT) 104b was the most common Typhimurium phage type isolated. These Salmonella strains were resistant to various antimicrobial agents, including tetracycline (84.6%), streptomycin (69.2%), neomycin (63.0%), sulfonamides (61.5%), ampicillin (53.8%), and amoxicillin (53.8%). All isolates were fully susceptible to ceftriaxone, ciprofloxacin, and colistin. Thirty-nine strains (64%) resistant to four or more antimicrobial agents were defined as multidrug resistant. Multidrug resistance profiles were observed in Salmonella serotypes Typhimurium, Rissen, Brandenburg, Bredeney, a monophasic variant. Gold-coast, Hadar, and Anatum, with serotypes Typhimurium and Brandenburg showing the most complicated resistance patterns (resistant to ≥ 11 drugs). Copyright ©, International Association for Food Protection.

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APA

Márquez, R. J. A., Salaberria, A. E., García, A. M., Jimenez, S. V., Martinez, A. C., García, A. A., & Casas, A. A. (2007). Surveillance and antimicrobial resistance of Salmonella strains isolated from slaughtered pigs in Spain. Journal of Food Protection, 70(6), 1502–1506. https://doi.org/10.4315/0362-028X-70.6.1502

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