Pathogenicity and Characterization of Streptococcosis in Egyptian Nile Tilapia (Oreochromis niloticus) in Kafr Elshikh Governorate

Hosam A. Saleh; Nader M. Sabry; Mohamed Abd Al-Razik; Fatma A.S. Mohamed; Madiha S. Ibrahim

doi:10.5455/ajvs.243929

2025, Vol: 87

87Current Volume Online First Archive Aims and Scope Abstracting & Indexing Most Accessed Articles Most Downloaded Articles Most Cited Articles

« Previous Article

Original Article
Online Published: 24 Feb 2017

AJVS. 2017; 52(1): 173-179

doi: 10.5455/ajvs.243929

Pathogenicity and Characterization of Streptococcosis in Egyptian Nile Tilapia (Oreochromis niloticus) in Kafr Elshikh Governorate

Hosam A. Saleh, Nader M. Sabry, Mohamed Abd Al-razik, Fatma A.s. Mohamed, Madiha S. Ibrahim.

Abstract
This study was conducted for isolation and identification of Streptococcus iniae from Oreochromis niloticus fish farms using traditional and molecular PCR techniques. Forty-seven isolates of Streptococcus were recovered from 232 fish samples from successive 4 seasons during 2015. Summer showed the highest prevalence with 34.9%. S. iniae was identified as the causative agent for streptococcosisin 3 seasons by PCR using S. iniae specific-16S rRNA primers. Experimental infection was performed to determine the pathogenicity of S. iniae for O.nloticusand the best antibiotics to be used for treatment of streptococcosis. S. iniae caused 70% mortalities in experimentally infected fish. Several histopathological alterations were observed in the liver, spleen, kidney and gills of the infected fish. The most effective antibiotics for treatment were Ampicillin with no mortalities, followed by Penicillin and Tetracycline with 10% mortality for both.

Key words: S. iniae, Oreochromis niloticus, antibiotics, Egypt.

	ARTICLE TOOLS
	Abstract
	PDF Fulltext
	How to cite this article
	Citation Tools
	Related Records
	Articles by Hosam A. Saleh Articles by Nader M. Sabry Articles by Mohamed Abd Al-Razik Articles by Fatma A.S. Mohamed Articles by Madiha S. Ibrahim
	on Google
	on Google Scholar

How to Cite this Article

Pubmed Style

Saleh HA, Sabry NM, Al-razik MA, Mohamed FA, Ibrahim MS. Pathogenicity and Characterization of Streptococcosis in Egyptian Nile Tilapia (Oreochromis niloticus) in Kafr Elshikh Governorate. AJVS. 2017; 52(1): 173-179. doi:10.5455/ajvs.243929

Web Style

Saleh HA, Sabry NM, Al-razik MA, Mohamed FA, Ibrahim MS. Pathogenicity and Characterization of Streptococcosis in Egyptian Nile Tilapia (Oreochromis niloticus) in Kafr Elshikh Governorate. https://www.alexjvs.com/?mno=259641 [Access: May 03, 2025]. doi:10.5455/ajvs.243929

AMA (American Medical Association) Style

Saleh HA, Sabry NM, Al-razik MA, Mohamed FA, Ibrahim MS. Pathogenicity and Characterization of Streptococcosis in Egyptian Nile Tilapia (Oreochromis niloticus) in Kafr Elshikh Governorate. AJVS. 2017; 52(1): 173-179. doi:10.5455/ajvs.243929

Vancouver/ICMJE Style

Saleh HA, Sabry NM, Al-razik MA, Mohamed FA, Ibrahim MS. Pathogenicity and Characterization of Streptococcosis in Egyptian Nile Tilapia (Oreochromis niloticus) in Kafr Elshikh Governorate. AJVS. (2017), [cited May 03, 2025]; 52(1): 173-179. doi:10.5455/ajvs.243929

Harvard Style

Saleh, H. A., Sabry, . N. M., Al-razik, . M. A., Mohamed, . F. A. & Ibrahim, . M. S. (2017) Pathogenicity and Characterization of Streptococcosis in Egyptian Nile Tilapia (Oreochromis niloticus) in Kafr Elshikh Governorate. AJVS, 52 (1), 173-179. doi:10.5455/ajvs.243929

Turabian Style

Saleh, Hosam A., Nader M. Sabry, Mohamed Abd Al-razik, Fatma A.s. Mohamed, and Madiha S. Ibrahim. 2017. Pathogenicity and Characterization of Streptococcosis in Egyptian Nile Tilapia (Oreochromis niloticus) in Kafr Elshikh Governorate. Alexandria Journal of Veterinary Sciences, 52 (1), 173-179. doi:10.5455/ajvs.243929

Chicago Style

Saleh, Hosam A., Nader M. Sabry, Mohamed Abd Al-razik, Fatma A.s. Mohamed, and Madiha S. Ibrahim. "Pathogenicity and Characterization of Streptococcosis in Egyptian Nile Tilapia (Oreochromis niloticus) in Kafr Elshikh Governorate." Alexandria Journal of Veterinary Sciences 52 (2017), 173-179. doi:10.5455/ajvs.243929

MLA (The Modern Language Association) Style

APA (American Psychological Association) Style

About Alexandria Journal of Veterinary Sciences

Contact Information

How to cite this article