168950

MOLECULAR CHARACTERIZATION OF SALMONELLA SPECIES ISOLATED FROM CHICKEN TABLE EGG CONTENT

Article

Last updated: 05 Jan 2025

Subjects

-

Tags

Meat hygiene & meat by-products
Microbiology, mycology and immunology

Abstract

Salmonellosis is a foodborne illness caused by consumption of contaminated food. Infected raw or undercooked eggs are one of the major causes of salmonellosis, which lead to many public health problems. The aim of this study is isolation and identification of Salmonella spp. from the egg content samples, in addition, detection of some virulence gene (avrA, invA and stn). Four hundred edible farm and balady eggs (200 of each) were randomly collected from different supermarkets and farms in El-Behera Governorate, Egypt. The obtained results revealed that the incidence of Salmonella species were 1 and 3% in examined farm and balady eggs, respectively and also 1% in balady eggs while couldn't be detected in farm eggs by direct molecular target genes detection. Serotyping of Salmonella isolates revealed that two different Salmonella serotypes were identified as; S. enteritidis (1strain), S. typhimurium (1 strain) from farm eggs and S. enteritidis (5 strains) and S. typhimurium (1 strain) from balady eggs. Six isolates of Salmonella serovars were molecularly identified, all had avrA gene at 422 bp, invA gene at 284 bp and stn gene at 617 bp. In addition direct detection of virulence gene from egg content of ten egg samples for Salmonella revealed that 2 samples from balady eggs contain all target virulence genes (avrA, invA and stn) with amplified products 422, 284 and 617 bp, respectively.  Presence of invA, avrA and stn gene in all isolates indicated that they are capable of producing gastroenteric illness to humans.

DOI

10.21608/avmj.2019.168950

Keywords

S. enteritidis, S. typhimurium, edible eggs, Virulence genes, PCR

Authors

First Name

SABER

Last Name

A.S.

MiddleName

-

Affiliation

Animal Health Research Institute, Damanhour Branch, Egypt

Email

sabersaad284@yahoo.com

City

-

Orcid

-

First Name

ABEER

Last Name

H.A.

MiddleName

-

Affiliation

Animal Health Research Institute, Alexandria Branch, Egypt

Email

-

City

-

Orcid

-

Volume

65

Article Issue

162

Related Issue

24303

Issue Date

2019-07-01

Receive Date

2019-05-16

Publish Date

2019-06-13

Page Start

83

Page End

92

Print ISSN

1012-5973

Online ISSN

2314-5226

Link

https://avmj.journals.ekb.eg/article_168950.html

Detail API

https://avmj.journals.ekb.eg/service?article_code=168950

Order

12

Publication Type

Journal

Publication Title

Assiut Veterinary Medical Journal

Publication Link

https://avmj.journals.ekb.eg/

MainTitle

MOLECULAR CHARACTERIZATION OF SALMONELLA SPECIES ISOLATED FROM CHICKEN TABLE EGG CONTENT

Details

Type

Article

Created At

23 Jan 2023