Assessment of the Susceptibility of Polyculture Reared African Catfish and Nile Tilapia to Edwardsiella Tarda

Citation:
Ibrahem, M. D., Iman, B. Shaheed, A. H. El-Yazeed, and H. Korani, "Assessment of the Susceptibility of Polyculture Reared African Catfish and Nile Tilapia to Edwardsiella Tarda", Journal of American Science, 2011.

Abstract:

The study aimed to clarify the relative susceptibility of polyculture rearing African sharptooth catfish (Clarias gariepnus) and Nile tilapia (Oreochromis niloticus) , the two main reared species in Egypt to Edwardsiella tarda. Experimental infection of catfish and Nile tilapia with E. tarda was carried out after determination of the Mean lethal dose in African catfish (LC50). Infectivity pattern and pathology of E. tarda in catfish and Nile tilapia were tested via intra-peritoneal inoculation of 0.2ml of 104 CFU/ml of the bacteria at 25 oC. The mortality rates were 70% and 60% in catfish and Nile tilapia respectively.

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