Resistencia antimicrobiana en aislados de Escherichia coli de canales de ovejas asperjadas durante la refrigeración
DOI:
https://doi.org/10.17533/udea.rccp.v34n2a04Palabras clave:
antibiótico, antimicrobiano, aspersión, canales, enterobactérias, Escherichia coli, multiresistencia, organismos multiresistentes, ovejas, resistencia bacteriana, resistencia antibacteriana, resistencia microbiana, resistencia multiple, sacrificio, salud públicaResumen
Antecedentes: las bacterias multirresistentes presentes en alimentos de origen animal son motivo de alerta para la salud humana y animal. Objetivo: verificar la resistencia a antimicrobianos de aislados de Escherichia coli en canales ovinas sometidas a aspersión (4 y 10 h) durante la refrigeración. Métodos: Luego de dos faenas de sacrificio, treinta hisopos fueron colectados en la superficie de las canales antes y después de la última aspersión. En un primer sacrificio (1era colecta) se recolectaron muestras de tres canales sometidas a aspersión (4 horas), tres sin aspersión y una canal como control. En un segundo sacrificio (2da colecta), el mismo número de canales y tratamientos se mantuvo, y el período de aspersión se extendió a 10 horas. Las muestras recogidas fueron aisladas y sometidas a la prueba de susceptibilidad utilizándo 16 (1.ª colecta) y 17 (2.ª colecta) antimicrobianos, respectivamente. Resultados: los aislamientos de E. coli fueron, en general, resistentes a las principales clases de antimicrobianos. Las canales con aspersión y el control (10 h) presentaron resistencia al meropenem. Conclusión: cuando la asperción duró 10 h, los aislados de E. coli presentaron mayor resistencia para una, dos y cuatro clases de antimicrobianos, es decir, fueron multirresistentes a los fármacos utilizados. Esto resalta la necesidad de monitorear el estado de salud durante todos los procesos de producción de carne.
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