Study of Cyprinus carpio fish growth using local feed in mud basins

The current study used cultivating the Cyprinus carpiofish in three lakes that were supplied with water from Al-bada’a River in Al-Rifaay County –Al-Nadhim Village and the fish were cultivated with unified density in all of the three lakes for a duration started from 02/Sep/2021 to 22/ Feb/2022 and three unified treatments were used in cultivation density 1000/m3 divided equally on three lakes with average weight of ±20 gm. A unified local feed was used to feed the fish in the lakes. The temperature ranged between 14-28 cº potential hydrogen of 7-8.5. Dissolved oxygen was between6.7-9.0mgm/liter, salinity 0.2-0.3gm/L. The study included the rate of total weight increase, rate relative growth, and qualitative growth rate, food conversion factor and its efficiency, protein efficiency rate. Statistical analysis results have shown significant differences p<0.05 in total weight increase and among the different treatments the first one showed a clear progress p<0.05 in monthly weight increase 400.0gm per fish from the rest of the treatments during February. A significant progress for the fish of the second treatment with a rate of 1.600% within the relative growth rate in November