Cultural Isolation, Identification, and Antibiogram of Escherichia coli from Commercial Layers Affected with Egg Peritonitis
Keywords:
Antibiogram, Commercial layer, Cultural characteristics, Egg peritonitisAbstract
The present study was conducted on eight commercial layer flocks affected with egg peritonitis (swab samples from oviduct and exudate from the peritoneal cavity) for cultural isolation, identification, biochemical characterization, and antibiogram of Escherichia coli (E. coli). All the twenty-four samples from 8 commercial layer flocks revealed colonies with typical morphology and biochemical characteristics of E. coli. Antibiogram study against seven different antibiotics was conducted by disc diffusion method. The results revealed the highest (100%) sensitivity to antibiotic ceftriaxone, levofloxacin, and tetracycline, followed by amikacin (75.00%) and cefotaxime (62.50%), while the organisms were highly resistant to norfloxacin (75.00%) followed by pefloxacin (62.50%).
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