mahmoud, A., A. Abdel Gawad, E., M. El Asely, A., Elabd, H., F. Matter, A., Youssuf, H., A. Shaheen, A., A. Abbass, A. (2023). Impacts of streptococcal infection on Nile tilapia Oreochromis niloticus in Egyptian farms with special reference to diagnosis and prevention. test, 44(1), 71-78. doi: 10.21608/bvmj.2023.175940.1612
amira mohamed mahmoud; Eman A. Abdel Gawad; Amel M. El Asely; Hiam Elabd; Aya F. Matter; Hadeer Youssuf; Adel A. Shaheen; Amany A. Abbass. "Impacts of streptococcal infection on Nile tilapia Oreochromis niloticus in Egyptian farms with special reference to diagnosis and prevention". test, 44, 1, 2023, 71-78. doi: 10.21608/bvmj.2023.175940.1612
mahmoud, A., A. Abdel Gawad, E., M. El Asely, A., Elabd, H., F. Matter, A., Youssuf, H., A. Shaheen, A., A. Abbass, A. (2023). 'Impacts of streptococcal infection on Nile tilapia Oreochromis niloticus in Egyptian farms with special reference to diagnosis and prevention', test, 44(1), pp. 71-78. doi: 10.21608/bvmj.2023.175940.1612
mahmoud, A., A. Abdel Gawad, E., M. El Asely, A., Elabd, H., F. Matter, A., Youssuf, H., A. Shaheen, A., A. Abbass, A. Impacts of streptococcal infection on Nile tilapia Oreochromis niloticus in Egyptian farms with special reference to diagnosis and prevention. test, 2023; 44(1): 71-78. doi: 10.21608/bvmj.2023.175940.1612

Impacts of streptococcal infection on Nile tilapia Oreochromis niloticus in Egyptian farms with special reference to diagnosis and prevention

Benha Veterinary Medical Journal
Volume 44, Issue 1, April 2023, Pages 71-78    PDF (1.06 M)
DOI: 10.21608/bvmj.2023.175940.1612
Authors
amira mohamed mahmoud* ; Eman A. Abdel Gawad* ; Amel M. El Asely* ; Hiam Elabd* ; Aya F. Matter* ; Hadeer Youssuf* ; Adel A. Shaheen* ; Amany A. Abbass*
Department of Aquatic Animals Medicine, Faculty of Veterinary Medicine, Benha University, Egypt
Abstract
Abstract
Streptococcosis is a serious bacterial disease responsible for significant economic losses in wild and farmed fishes It is the second disease threat to O. niloticus. Several species of Streptococcus have been reported worldwide as etiological agents of the disease. Also, other related bacterial species such as Lactococcus garvieae, Vagococcus salmoninarum, and Enterococcous faecalis with varied degrees of pathogenicity have been implicated in streptococcal infection. Streptococcosis is characterized by hemorrhagic septicemia, pop eye, nervous manifestation, abnormal swimming behavior, and high mortalities. Control of streptococcosis is principally achieved by implementing some preventive measures and treatment with antibiotics and to a lesser extent vaccination. Probiotics and immunostimulants can be used to enhance host immunity against the infection with some success. The majority of streptococcal species exhibited multiple antimicrobial resistance; thus, vaccination appears to be the most effective method of controlling in aquaculture . This present review summarizes some aspects of streptococosis disease such as history, epidemiology, diagnosis and possible control measures in cultured O. niloticus and its status in Egypt.
Keywords
Aquaculture; Egypt; Nile tilapia; Streptococcosis; Vaccine
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