Antimicrobial susceptibility of Salmonella strains isolated from pig herds in Zulia state

Willian Mejia, Derwin Calatayud Marquez, Denice Zapata, Armando Quintero, Damarys Sánchez, Enric Mateu

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1 Citation (Scopus)


The aim of this study was to determine antimicrobial resintance paterns of different strains of Salmonella isolated in pig farms of the Zulia State. To achieve these goals 126 strain Salmonella were screened by Kirby-Bauer method, colleted from heces of pigs asymptomatic. Antimicrobial susceptibility tests showed that the highest level of resistance was against Sulphonamides (54%), Tetracycline (40%), Nalidixic acid (29%) and Amplicillin (23%). However, susceptibility superior to 95% was found to Ceftriaxone, Gentamycin, Apramycin and Colistin. Thrity percent of the strains showed multirresitance, being the patterns resistance ASuT (7.14%) the most frequent. The results indicate the proportion of strain of Salmonella of pig origin with characteristics of multiresistance to the antimicrobial agents is elevated (30%) and this multiresistance could affect to anyone serotype. From this point of view, the infection of the people by isolates of Salmonella from swine origin entails a potential risk to present difficulties in the specific treatment.
Original languageEnglish
Pages (from-to)674-681
JournalRevista Cientifica de la Facultad de Ciencias Veterinarias de la Universidad del Zulia
Issue number6
Publication statusPublished - 1 Dec 2008


  • Antimicrobial
  • Pigs
  • Salmonella
  • Serotype
  • Zulia


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