The antibiotic resistance study of Enterobacteriaceae, Yersiniaceae and Morganellaceae bacteria isolated from broilers (outside veterinary control) in western Algeria

Abstract

In the context of our study of the animal side, especially in broiler chickens, the breeding of the latter requires the use of antibiotics for treatment and prophylaxis purpose; to give a closer look at the antibiotic resistance status of broiler chickens in Western Algeria. The bacteria Enterobacter, Escherichia coli, Proteus, Salmonella, Serratia were present and showed a high multidrug-resistance at a percentage of 67.14%, 63.64%, 60%, 57.27%, 50% respectively. The forty-nine bacteria identified belong to different families of Enterobacteriaceae, Yersiniaceae and Morganellaceae have shown an overall resistance of 61.22%. Presented resistance to cefazolin 91.84%, flumequine 89.80%, neomycin 83.67%, ceftiofur 79.59%, ampicillin 73.47%, trimethoprim 73.47%, aztreonam 57.14%, colistin 48.98 %, nadilixic acid 32.65%, streptomycin 30.61%, gentamicin 12.24%. To study the sensitivity, critical values to antibiotics a statistical Student's t-test was used. All bacteria were significantly resistant (P ≤ 0.05) to the following antibiotics: flumequine, neomycin, cefazolin, trimethoprim, ampicillin, and ceftiofur. However, a low sensitivity was also noted to gentamicin, nalidixic acid, streptomycin (P ≤ 0.05). Some isolated bacteria were resistant to many antibiotics, with resistance from 3 to 10 antibiotics simultaneously. The highest percentage of all bacteria (28.57%) were resistant to 8 antibiotics, while the lowest percentage of all bacteria (2.04%) were resistant to 3 and 10 antibiotics. DOI: http://dx.doi.org/10.5281/zenodo.4589474

Keywords

• Antibiogram
• Antibiotic resistance
• Enterobacteriaceae
• Yersiniaceae
• Morganellaceae