الفهرس 
تقديميوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
Three field experiments were carried out in season 2002 in a private fish hatchery and fish farm at kafr el-sheikh governorate tolombat no. 7 with cooperation of animal production department faculty of agriculture al-mansourah university at the first experiment two aeration period 8 and 16 hours daily.