Effect of Feeding Different Percentage of Biomass of a Certified Commercial Diet on Growth Performance and Feed Utilization for Common Carp (Cyprinus carpio L.)

Abstract

This study was conducted at fish laboratory affiliated to the department of animal production/college of agriculture/University Of Anbar. The experiment lasted eight weeks in Aquatic Recirculating System ARS from 5th Sep 2022 to 31 Oct 2022, to examine the appropriate nutrient ratios of commercial diet For Common carp (Cyprinus carpio L.). One hundred twenty-six fingerlings fish with 35.44± 0.44 gm. Weight randomly divided in to six treatment by three replicates, seven fish for each replicate. It housed in aquaria, with a capacity of 50 liters, its dimensions are 30 × 30 × 60 cm for each one. All fish had fed on the same diets, they were fed as follows (T1) is unlimited, open until saturation, and the other treatments T2, T3, T4, T5 and T6 were fed by 3%, 4%, 5%, 6% and 7%, respectively from their biomass weight ratio on two meals a day. The rustle showed that T4, T5 and T6 had significant increase (P≤0.05) in final weight (FW), weight gain (WG), daily weight gain (DWG), relative growth rate (RGR), specific growth rate (SGR) as compared with others. This study it could concluded, feeding fish 4% or 5% from biomass weight ratio improving growth performance and decrease wasted fodder.