The aim of this study was to determine the presence of antibiotics in the liver, kidney and muscle of guinea pigs of intensive breeding in four cities of Peru. For this, 410 carcass samples (liver, kidney and muscle) were evaluated. The samples were taken during the air-drying stage ready for sale and sent to the laboratory at 4 °C. The technique used was the microbiological agar diffusion with the Bacillus subtilis ATCC 6633 strain as the sensitive strain and a commercial enrofloxacin 5 µg disc as a positive control. The plates were incubated at 37 °C for 24 hours and then the diameter of the zones of inhibition of bacterial growth was measured with the Kirby-Bauer ruler. Frequencies of bacterial growth inhibition halos of 28.54 + 4.37% (117/410) were obtained in kidney samples, 27.07 + 4.3% (111/410) in muscle, and 26.59 + 4.28% (109/410) in liver. The study shows a high frequency o...

The aim of this study was to determine the presence of antibiotics in the liver, kidney and muscle of guinea pigs of intensive breeding in four cities of Peru. For this, 410 carcass samples (liver, kidney and muscle) were evaluated. The samples were taken during the air-drying stage ready for sale and sent to the laboratory at 4 °C. The technique used was the microbiological agar diffusion with the Bacillus subtilis ATCC 6633 strain as the sensitive strain and a commercial enrofloxacin 5 µg disc as a positive control. The plates were incubated at 37 °C for 24 hours and then the diameter of the zones of inhibition of bacterial growth was measured with the Kirby-Bauer ruler. Frequencies of bacterial growth inhibition halos of 28.54 + 4.37% (117/410) were obtained in kidney samples, 27.07 + 4.3% (111/410) in muscle, and 26.59 + 4.28% (109/410) in liver. The study shows a high frequency o...

El objetivo del presente estudio fue determinar la presencia de residuos de antibióticos en hígado, riñón y músculo de cuy de crianza intensiva en cuatro ciudades del Perú. Para ello se evaluaron 410 muestras de carcasas, evaluando de cada una de ellas hígado, riñón y músculo, estas se colectaron en la etapa de oreo en expendio, fueron colocadas en bolsas con cierre hermético a una temperatura de refrigeración, para luego transportarlas al laboratorio de Microbiología y Microscopia para su procesamiento. La técnica microbiológica de difusión en agar fue la utilizada y como cepa sensible a Bacillus subtilis ATCC 6633; se utilizó como control positivo un disco comercial de enrofloxacina de 5 μg de potencia. Luego de la incubación por 24 horas a 37°C de las placas procesadas, se midió el diámetro de los halos de inhibición bacteriana, con la regla de kirby bauer, este...