الفهرس 
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Abstract
The present study was conducted out at the Department of Botany, Faculty of Science, Zagazig University, Zagazig, Egypt, and the practical work was carried out at Central Laboratory for Aquaculture Research, Abbassa, Sharkia, Egypt. The experiment was carried from June to September 2010. Nile tilapia fish (O. niloticus) averaged about 7.2g was used in this study. Fish were divided into six groups, each group of fish was stocked into 3 aquaria and each one contains 10 fish. The fish of the first group were fed control diet, the 2nd group contains fish treated with 600 µg ochratoxin/kg feed ,the 3rd contains fish with 600µg ochratoxin and 2000 mg vitamin C /kg feed, the 4th contains fish with 600µg ochratoxin and 450mg vitamin E/kg feed, the 5th contains fish with 600 µg ochratoxin and 160 mg Aspirin/kg feed, the last contain fish with 600µg ochratoxin , 2000 mg vitamin C, 450 mg vitamin E and 160 mg Aspirin /kg feed.