Use of Natural food in Common carp Cyprinus carpio larva Nutrition to obtain a higher survival rat during their nursery period

Abstract

This study carried out in al Furat fish Company from 28/4/2011until 20/5/2011 to increase survival rate of fish common carp larva in first 18days of their life after hatching , and the study was divided to 2 treatment, the first treatment contain on aquarium tanks to nursery larva at stoking 1000 larva/³m with out any artificial food but use only max of naturalfood The second treatment(control) included on earthen ponds and fish larva stock at lower density 454larva/³m with high protein artificial food. At end of study we obtained on higher survival rate(91%) in treatment1 with 79.340million dinars as profit and 27920.494% simple rate of return when use a 2500m3. of area comparison with low profit 11.578million dinars and 2940.488% simple rate return from second treatment

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