Özet:

The goal of this study was to isolate and identify the causative agents that causes death in Yankee Hatch / Erbil fingerling Cyprinus carpio and to investigate the effect of Cinnamon on the infected fish handled. Both Staphylococcus aureus and Escherichia coli are strongly isolate followed by Aeromonas hydrophila and Klebsiella pneumonia were isolated from liver, kidney and intestine which cause histopathological changes in these organs, characterized by fibrosis in liver, coagulative necrosis in renal tubules in the kidney and sever enteritis. Cinnamomum cassia added to the ration of infected fish at concentration 0.75, 1 and 1.5 %for eight weeks. The histopathological examination reveals that the 1.5% is best the percentage used as food additive for repair and regenerative tissue damage in the liver, kidney and intestine. These study conclude that C. cassia have been used as additive food in fish feed ration at 1.5% and have important role in regenerative tissue damage and keep fish in health status.

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