Evaluation of antimicrobial susceptibility and genetic profiles (ERIC-PCR) of Enterococcus species isolated from chicken viscera

Arantxa Almada-Corral, Maritza Alejandra Cordero-Ortiz, Lizbeth Dolores Ballesteros-Herrera, Siria de Jesús Calderón-Montoya, Enrique Bolado Martínez, Reyna Isabel Sánchez Mariñez, Alfonso García-Galaz, Iracema del Carmen Rodríguez-Hernandez, Mario Onofre Cortez Rocha, Maritza Lizeth ÁLVAREZ-AINZA*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The genus Enterococcus can be found in water, soil, and food, and above all, they are part of the animal (including human) intestinal microbiota. Food prevalence is mainly due to their resistance to adverse environmental conditions. Seventy-three isolates from chicken viscera were confirmed to belong to the Enterococcus genus by biochemical tests and carbohydrate fermentation. Phenotypic characterization
of the species indicates that E. casseliflavus was the predominant specie. Antimicrobial resistance to amikacin (42 %), kanamycin (38 %), streptomycin (55 %) and erythromycin (33 %) in the isolates was notorious. The analysis obtained from
ERIC-PCR profiles shows a high genetic variability among the isolates. In addition, a relationship between the antimicrobial and ERIC-PCR profiles was observed among isolates. These results indicate the presence of multi-resistant Enterococcus in commercial chicken viscera with high genetic variability,
which could be a potential nosocomial bacterium or transfer this resistance to another pathogenic species causing human diseases
Translated title of the contributionEvaluación de la susceptibilidad a antibióticos y perfiles genéticos (ERIC-PCR) de especies Enterococcus aislados de vísceras de pollo
Original languageEnglish
Article numberDOI: 10.18633/biotecnia.v25i1.1869
Pages (from-to)169
Number of pages176
Issue number1
StatePublished - 20 Jan 2023

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