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Open Access
Copyright: The authors. This article is an open access
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Research (Published
online : 19-08-2013)
15. PCR detection and serotyping of enterotoxigenic and shigatoxigenic
Escherichia coli isolates obtained from chicken meat in Mumbai, India
- R. J. Zende, D. M. Chavhan, P. R. Suryawanshi, A. K. Rai and V. M. Vaidya
Veterinary World, 6(10): 770-773
doi:
10.14202/vetworld.2013.770-773
Abstract
Aim: Present study was
undertaken to find out the frequency of few virulent genes and
prevalence of related strains of Escherichia coli isolated from
chicken meat obtained from chicken retail shops by Polymerase
Chain Reaction (PCR).
Materials and Methods: 66 samples of freshly slaughtered
chicken meat were collected from 22 identified retail shops
located at Mumbai city, randomly. Processed meat samples were
cultured in EMB agar and presumptive colonies were confirmed by
various biochemical tests. PCR method was accustomed for
identification of the genes coding for heat-stable enterotoxin a (STa),
heat labile enterotoxin (LT), shiga-like toxins 1 and 2 (SLT1 and
SLT2). E. coli isolates were sent to National Salmonella and
Escherichia Centre, CRI, Kasauli, HP, India for serotyping.
Results: 11 (16.67%) E. coli strains were isolated from 66
chicken meat samples. 3 (27.27%) out of 11 harbored the gene for
SLT2, and 2 (18.18%) for STa. None of the strain contains SLT1 and
LT genes. Serotypes detected were rough, O2, O20, O22, O102 each
for one isolate and 6 isolates were untypable (UT).
Conclusion: The results concluded that chicken meat samples
analysed harbored genes for shiga like toxins and enterotoxins and
different serotypes of E. coli. These findings indicating that
regular monitoring of chicken meat is essential for this pathogen
to prevent potential public health problems.
Keywords: chicken meat, enterotoxin, Escherichia coli,
polymerase chain reaction, virulence gene
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