الفهرس 
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Abstract
The present study 2015 summer season and 16 Week (112 days). The aim of the study is the effect of contamination of feed Nile tilapia (Oreochromis niloticus) fingerlings aflatoxin B1 (concentration 150 ppb) without or with the use of some food additives such as antibiotics to toxins and is the Root licorice (Glycycrhiza glabra), the MTB 100, gromin plus (Probiotics material) concentration of 1, 2, 0.5 g/ kg feed respectively on subsistence rate and growth and the utilization rate of food and nutrients (protein and energy) And on some measures of blood and some histological tests on the remaining The remainder of mycotoxins in body Nil Tilapia. After 150 random fish distributed localized for two weeks on his adapted to a basal commercial diet contains 30% protein 15 fish for each basin with an average weight of 13.5 g/fish of Ten glass basins used in five transactions (2 indoor/treatment) from the foregoing results it could be concluded that aflatoxin contaminated diets caused many drastic effects in all tested parameters, we recommend the importance of using all of my MTB100 focus 1 g/kg diet or Root licorice concentration of 1 g/kg diet of ration to reduce toxic effects aflatoxins B1 pollutant Nile tilapia diet.