Investigation of Culture Possibilities of Different Carp Species in Cage and Tank Conditions for Polyculture

In two different breeding environments including tank and cage systems, 3 different carp species (mirror carp, common carp, and grass carp), and 90 days post-fattening performance were compared. The experiment was carried out at Çukurova University Aquaculture Production and Research Station between July and September. In the experiment, commercial carp feeds containing 36% Crude protein and 11% crude oil were used and feeding was carried out twice a day. In the experiment, 2-mirro carp (MC) Cyprinus carpio, 3 g of common carp (CC) Cyprinus carpio and 3-4 g of grass carp (GC) Ctenopharyngodon idellus were used. The experimental groups were stocked together in cages and tanks with 25 fish / m3 (10 MC + 10 CC + 5 GC). At the end of the 90 day feeding period, in the GC group (2.06 ± 0.3% days), the highest specific growth rate (SGR) was reached in cages, followed by MC group (1.93 ± 0.01% day). 568.9 g/m3 yield from the tank system, 582.4 kg/m3 yield was obtained from the cage system (P>0.05). The highest growth rate in terms of proportional growth values was reached in the GC group (565.57 ± 16.54), which was grown in lattice systems, while the MC group (470,6 ± 16,48) grown in cages and of the CC group grown in tanks (399.74 ± 6.73) (P<0.05). When evaluated in terms of species under polyculture conditions, no difference was observed with the cage or tank being the growing medium for common carp. In addition to this, for the mirror carp and grass carp, the culture in the cage systems was much better than the cultivation in the tank environment.