Prevalence of Escherichia coli carrying extended-spectrum b-lactamases (CTX-M and TEM-52) from broiler chickens and turkeys
نویسندگان
چکیده
Methods: E. coli was isolated from 388 broiler chicken caecal samples from 22 abattoirs and from boot swabs from 442 turkey flocks over successive 1 year periods. CHROMagar ECC with and without cephalosporin antibiotics was used as isolation medium and the chicken study also used CHROMagar CTX. ESBL phenotype isolates were tested for the presence of blaCTX-M, blaOXA, blaSHV, blaTEM and ampC genes. CTX-M isolates were tested for O25 serogroup, replicon, CTX-M sequence, multilocus sequence type (MLST), PFGE type, plasmid transfer and qnrA, qnrB, qnrS, qepA and aac(6′)-Ib genes.
منابع مشابه
Phylogenetic typing and detection of extended-spectrum β-lactamases in Escherichia coli isolates from broiler chickens in Ahvaz, Iran
This study was conducted to reveal the phylogenetic background, to detect the genes encoding TEM, SHV and CTX-M-15 extended-spectrum β-lactamases (ESBL), and to analyze their distribution in phylo-groups of 150 Escherichia coli isolates from broiler chickens in Ahvaz (Southwest of Iran). Seventy- five cloacal swabs from healthy birds (fecal isolates), and 75 heart blood samples from bi...
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