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Phylogenic typing of Escherichia coli isolated from broilers with collibacillosis in Tabriz, North West of Iran

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Author(s): Hassani, B. | Shayegh, J. | Ameghi, A. | Mikaili, P. | Mahmmudzadeh, M.

Journal: Archives of Razi Institute
ISSN 0365-3439

Volume: 68;
Issue: 1;
Start page: 43;
Date: 2013;
Original page

Keywords: Escherichia coli | phylogeny | collibacillosis | Tabriz | broiler

ABSTRACT
In this study, to know about the phylogeny of Escherichia coli isolated from broilers with collibacillosis in Tabriz, 70 E. coli isolates recovered from broilers with collibacillosis were characterized for phylogenetic group (A, B1, B2, D) by multiplex PCR. Of the all 70 samples, 35 (50%) isolates were classified as type A, 32 (45%) as type D, 2 (2.8%) as type B1 and 1 (2.8%) as type B2. This study demonstrates the high prevalence of E. coli types A and D in infected broilers. This shows that the collibacilosis-causing E. coli bacteria are typical commensals, type A alongside pathogenic type, D in Iran. It is possible that this type of E. coli could acquire virulence genes from pathogenic types. Of course, such a claim needs further study.
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