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ANTIBIOTIC PROFILE OF BACTERIA ISOLATED FROM THE SKIN SURFACE FROM EXTENSIVELY RAISED SWINE

Published in AgroLife Scientific Journal, Volume 11, Number 2
Written by Cristina Ioana LAZĂR, Gheorghița DUCA, Carmen Dana ȘANDRU, Diana OLAH, Marina SPÎNU, Emoke PALL, Constantin CERBU, Ovidiu GIURGIU, Adrian POTÂRNICHE, Aurel VASIU

Antibiotic resistance of Staphylococcus is increasing worldwide and is becoming a global concern. The present report exposes the study of the antibiotic susceptibility in isolates of Staphylococcus spp obtained from farm pigs. The samples were collected from healthy pigs, from different farms, in the period between 2019-2020. Forty strains of Staphylococcus were isolated from the anterior nares of individual pigs, and from the skin behind the ears of the animals. These isolates were tested against 12 different antimicrobial agents using the Kirby-Bauer disk-diffusion method. The antibiotic susceptibility profile of different bacteria isolates was studied to detect MAR, MDR. Multiple antibiotic resistance (MAR) indices were determined and it was above 0.2 in 24 of the total of 40 bacteria studied. The highest MAR index was detected in Staphylococcus lentus (0.5) and Staphylococcus xylosus (0.41) and 26 (65%) strains was MDR. In conclusion, the high levels of antibiotic resistance generally correlates with high antibiotic usage and antibiotics used are a risk to humans with occupational contact with livestock antibiotics.

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