الفهرس 
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Abstract
The present study was carried out at the Rabbits Farm of Sakha Station, Animal Production Research Institute, Agriculture Research Center, Egypt .This study was conducted to compare inorganic or organic sources of Se with or without vitamin E and their effects on growth performance, digestibility of nutrients, carcass characteristics, the pH of parts of gastrointestinal tract, Se content in meat, metabolic, enzymatic, immunoglobulin serum profiles of growing rabbits and finally economic efficiency. Also, histological evaluation was done for liver and kidney samples at the end of the eperimental period.