Antibiotic resistance patterns and genotypes of Salmonellae within swine production systems and the relationship to on farm use of antibiotics
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The SafePork conference series began in 1996 to bring together international researchers, industry, and government agencies to discuss current Salmonella research and identify research needs pertaining to both pig and pork production. In subsequent years topics of research presented at these conferences expanded to include other chemical and biological hazards to pig and pork production.
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Abstract
A total of 206 Salmonella isolates were obtained from fecal samples from swine and environmental sites and tested for antibacterial resistance. The most common resistances were to tetracycline, sulfamethoxazol, and streptomycin. Some isolates were resistant to as many as 9 antibiotics in the test panel. However, 31% were sensitive to all antibiotics, 15% were resistant to a single antibiotic, 30% were resistant to two antibiotics and 20% were resistant to 3 antibiotics. Salmonella isolates from the same farm that had the same pattern of antibiotic resistances also had the same PFGE genotype and serotype.