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205163

MOLECULAR CHARACTERIZATION OF STREPTOCOCCUS AND ENTEROCOCCUS SPECIES ISOLATED FROM BROILER CHICKENS

Article

Last updated: 23 Jan 2023

Subjects

-

Tags

Avian / Rabbit diseases
Microbiology, mycology and immunology

Abstract

Streptococcus and Enterococcus infections in chickens may result in significant negative effect on economy. In the current study, the prevalence of Streptococcus and Enterococcus species was planned in different broiler chickens farms in Beni-Suef Governorate. A total of 272 samples were collected from lesions (septicemic organs, enlarged organs, necrotic focci) of the affected organs including heart, lung, liver and kidney of diseased broiler chickens and freshly dead ones. Out of 272 samples a total of 49 isolates were recovered with incidence of 18% including 26Streptococcus spp. (53.1%) and 21 Enterococcus spp. (42.8%) meanwhile 2 isolates (4.1%) were unidentified. Streptococcus isolates were identified as S.gallinaceous (24.5%), S. dysgalactiae (16.3%) and S. durans (12.2%). Meanwhile all Enterococcus isolates were identified as E. faecalis. The in-vitro antibiotic sensitivity testing showed that all isolates were highly sensitive to amoxicillin (77.6%), sulfamethoxazole-trimethoprim (73.5%) and amoxicillin-clavulanic acid (65.3%). Meanwhile, all isolates were resistant to cephalexin, cefotaxime sodium, cefipime, cefotriaxone, tetracycline, kanamycin and apramycin while 87.8 and 63.2% of isolates showed resistance aganist gentamicin and enrofloxacin, respectively. Moreover, multidrug resistant were detected in all isolates. Polymerase chain reaction (PCR) was applied to identify 4 resistance-associated genes including (tetO, aac(6')aph(2''), blaZ and Pbp < /em>1A) as well as 6 virulence-associated genes including (cylE, brp < /em>A, hyl, cylA, asa1 and gelE). The results indicated that tetO, aac(6')aph(2''), blaZ, Pbp < /em>1A, cylE, brp < /em>A, cylA and asa1 genes were recovered from all the tested isolates (100%). Meanwhile, none of streptococcus isolates had hly gene also, gelE gene not detected in enterococcus isolates.

DOI

10.21608/avmj.2021.205163

Keywords

Streptococci, enterococci, Broiler chickens, resistance genes, Virulence genes

Authors

First Name

AHMED H.

Last Name

ABED

MiddleName

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Affiliation

Bacteriology, Mycology and Immunology Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt.

Email

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City

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Orcid

-

First Name

ASMAA S. A.

Last Name

SEDIK

MiddleName

-

Affiliation

Bacteriology, Mycology and Immunology Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt.

Email

asmaa.saad91@yahoo.com

City

Beniseuf

Orcid

-

First Name

SALAMA A. S.

Last Name

SHANY

MiddleName

-

Affiliation

Poultry Diseases Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt.

Email

-

City

-

Orcid

-

Volume

67

Article Issue

171

Related Issue

25733

Issue Date

2021-10-01

Receive Date

2021-09-19

Publish Date

2021-10-01

Page Start

21

Page End

32

Print ISSN

1012-5973

Online ISSN

2314-5226

Link

https://avmj.journals.ekb.eg/article_205163.html

Detail API

https://avmj.journals.ekb.eg/service?article_code=205163

Order

3

Type

Research article

Type Code

1,840

Publication Type

Journal

Publication Title

Assiut Veterinary Medical Journal

Publication Link

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

MainTitle

-

Details

Type

Article

Created At

23 Jan 2023