الفهرس 
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Abstract
The current study aimed to determine the occurrence and antibiotic resistance pattern profile of some Enterococcusisolates recovered from chicken flocks as well as detection of vanA gene representative for vancomycin resistant enterococci.
A total of 300 cloacal swabs were collected from 12 chicken flocks including, Saso, broilers and breeder flocks (100 samples per each) from apparently healthy birds.
The obtained results clarified that the overall isolation rate of enterococci in examined chicken flocks was 15.3% (46 isolates out of 300 cloacal swabs)and the isolation rateswere13, 16 and 17% in broilers, Saso and layers flocks, respectively.
Antimicrobial susceptibility testing was performed against 8 antibiotics discs using diskdiffusion method.
Results of molecular characterization of 20 Enterococcusisolates recovered from chicken samples showed that all isolates were positive for presence of Enterococcus 16S rRNA and E. fecalis 16S rRNA, while only 8 isolates were positive for presence of vanA gene representative for vancomycin resistant enterococci.