Growth of carp (Cyprinus carpio) in recirculating system using live and starter feed.

Taking into consideration high losses and long period required for carp breeding up to market size and weight, the research focused on assessment of possibilities of breeding carp larvae and fingerlings in the recirculating system. Three-day larvae of the average individual weight of 1.3 mg•ind-1 were settled in three 150-liter tanks. Each thank contained 30 000 larvae. Water temperature, as an important factor for growing larvae and fingerlings, varied between 23-24oC throughout the breeding period, and concentration of dissolved oxygen varied from 4.7 to 8 mg•L-1. Feeding of larvae started immediately after settling in with the nauplius larvae Artemia salina, which were decapsulated and prepared for feeding 1 day earlier. Afterwards, live feed was replaced with forage mixture. The daily amount of extra feed was given at 2-hour intervals. After the 31st farming day, the mass of fingerlings bred in the recirculating system depended on feed type and varied from 855.3 to 1123 mg•ind-1.