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57007

Molecular Characterization of Virulence Genes Associated with Salmonella spp. Isolated From Poultry

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Last updated: 22 Jan 2023

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Abstract

Salmonella is still the major threat to the poultry industry and humans especially that of zoonotic importance. In the present study, a total of 300 samples (liver, intestine, yolk sac and spleen) collected from 100 broiler chickens were examined bacteriologically for the presence of Salmonella. The isolated salmonellae were then screened for virulence encoding genes using multiplex PCR and the antimicrobial susceptibility to antibiotics using disc diffusion method. Results showed that Salmonella was recovered from 5.33% of the examined samples. Sixteen Salmonella serovars were recovered [Salmonella Sinchem (n=3) Salmonella Typhimurium (n=2), Salmonella Gallinarum (n=2), Salmonella Enteritidis (n=2), Salmonella enterica subsp. Salamae (n=1), Salmonella Virchow (n=1), Salmonella Kentucky (n=2), Salmonella Heidelberg (n=1), Salmonella Farsta (n=1) and Salmonella Hydra (n=1)]. Results also showed that all the tested salmonellae (100%) were found harbor the virulence encoding gene specific amplicon of pagC, msgA, spiA, invA, prgH, orgA, sipB, tolC, iroN, lpfC, pefA, sitC, sifA, and sopB. While, only 30% and 70% of the examined salmonellae were harbor cdtB and spvB, respectively. The antimicrobial susceptibility testing of the isolates revealed that most of the isolated Salmonella serovars were expressed multiple antibiotic resistance indexes (MAR) to amoxicillin, doxycycline, chloramphenicol, ampicillin, gentamicin, trimethoprim/sulphamethoxazole. In conclusion, the results of the current study demonstrated that Salmonella isolated from broilers chicken were found to harbor many virulence encoding genes and expressed a high degree of MDR to antibiotics commonly used in human medicine.

DOI

10.21608/jcvr.2019.57007

Keywords

Antimicrobial resistance, Broilers, multiple PCR, Salmonella, Virulence genes

Authors

First Name

Reda

Last Name

Tarabees

MiddleName

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Affiliation

Department of Bacteriology, Mycology and Immunology Faculty of Veterinary Medicine, University of Sadat City, Egypt

Email

reda.tarabees@vet.usc.edu.eg

City

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Orcid

0000-0003-2171-7978

First Name

Gehad

Last Name

Helal

MiddleName

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Affiliation

Veterinarian at the Directorate of Veterinary Medicine, Sadat province

Email

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City

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Orcid

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First Name

Gamal

Last Name

Younis

MiddleName

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Affiliation

Microbiology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt

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Orcid

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Volume

1

Article Issue

2

Related Issue

8666

Issue Date

2019-11-01

Receive Date

2019-07-23

Publish Date

2019-11-01

Page Start

36

Page End

46

Print ISSN

2636-4018

Online ISSN

2636-4026

Link

https://jcvr.journals.ekb.eg/article_57007.html

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https://jcvr.journals.ekb.eg/service?article_code=57007

Order

4

Type

Original Article

Type Code

799

Publication Type

Journal

Publication Title

Journal of Current Veterinary Research

Publication Link

https://jcvr.journals.ekb.eg/

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Article

Created At

22 Jan 2023