Occurrence of Adhesin-encoding Operons in Escherichia Coli Isolated from Breeders with Salpingitis and Chicks with Omphalitis
نویسندگان
چکیده
The occurrence of fim, pap and sfa operons in Escherichia coli isolated from breeders with salpingitis and chicks with omphalitis was evaluated. Analysis of 100 E. coli isolates, by colony hybridization tests, showed that 78 (78%) were fim, one (1%) was sfa, seven (7%) were fim associated with pap, eigth (8%) were fim and sfa, one (1%) was fimpapsfa and five (5%) isolates did not hybridize with any probe. These results suggest that fim adhesion-encoding operon plays an important role in pathogenesis of E. coli infection in chickens with salpingitis and omphalitis.
منابع مشابه
Detection of pap, sfa, afa and fim Adhesin-Encoding Operons in Avian Pathogenic Escherichia coli
The occurrence of fim, pap, sfa, and afa genes was evaluated in 200 Escherichia coli strains isolated from chickens diagnosed with omphalitis, salpingitis, swollen head syndrome, or chronic respiratory disease. Analysis of the strains by colony hybridization tests demonstrated that 96% of the isolates were fim, 16% were pap, and 6% were sfa. None of the isolates was afa. The fim gene occurred i...
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