A comparison study of nutritional and productive aspects of common carp (Cyprinus carpio L.) reared in earthen ponds in Ranya (North of Iraq)

The increasing necessity on fish meat at Northern Iraqs' cities particularly in Sulaimaniya and Erbil Governorates due to the increasing population with suitable economic situation especially after 2010; also brought about excessive demand on various types of fish meats obtained from natural growing fishes in lakes. In this region, water temperature values are optimum about 5-6 months during the year for growing of subtropical climate Cyprinids. For this reason, a rapid increasing has seen on earthen ponds establishment. In this study, it was aimed to determine the productivity aspects of common carp (Cyprinus carpio L.) in Ranya Zone (Raparin Administration), with comparing ponds statics of selected six farms in different s. The study was carried out during the five months period (between May and September) between the farming period and the harvesting season. The mean values of moisture ratio (75.937 % to 70.498 %) were not significantly different (P>0.05), however fat ratio (13.36 % to 6.33 %), protein ratio (21.79 % to 10.40 %) and ash ratio (2.35 % to 1.01 %) of fish meat samples, which were taken from different fish ponds, were found significantly different (P<0.05). The organoleptic tests that were conducted to evaluate the quality of fish's meat, showed significant differences (P<0.05) in tenderness (4.8 to 3.0 on 5) and overall acceptability (4.8 to 3.6 on 5), and no significant differences (P>0.05) in each of juiciness (4.2 to 3.4 on 5) and flavor (4.6 to 3.6 on 5).