Antimicrobial resistance and R-plasmid in Salmonella spp from swine and abattoir environments

Pesquisa Veterinária Brasileira

Norma S. Lázaro²  Anita Tibana¹  Dália P. Rodrigues¹  Eliane M.f. Reis¹  Bianca R. Quintaes¹  Ernesto Hofer¹ 

[1] ,Universidade Federal Rural do Rio de Janeiro Instituto de Veterinária Departamento Epidemiologia e Saúde PúblicaSeropédica RJ ,Brasil

关键词: Salmonella;    swine;    antimicrobial resistance;    R-plasmid;    Salmonella;    suínos;    resistência antimicro-biana;    plasmidios R;   

DOI  :  10.1590/S0100-736X2004000200001

来源: SciELO

【 摘 要 】

Salmonella serovars isolated from swine are of particular interest not only because of the pathogenic potential for this animal species, but also due to its relevance with regard to public health. On basis of the profile of resistance to antimicrobials, 13 Salmonella strains were selected which belonged to the serovars Muenster (7), Derby (4), Typhimurium (1), and Braenderup (1). They were isolated from healthy swine as well as from the abattoir environment in the state of Rio de Janeiro. All strains of Salmonella were subjected to bacterial conjugation, and the E. coli K12 Nal r Lac+ F standard strain was used as receptor, with the purpose to verify the ability to transfer the resistance marks. Gene transfer phenomenon was detected in seven strains, and except SalmonellaTyphimurium which transconjugated to Sm, Tc and Su, the remaining ones were characterized by transferring mark Su only. By plasmidial analysis of strains used and their respective transconjugants, 63 Kb plasmid was found, which was probably related to S. Typhimurium resistance.

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