BREEDING OF THE SIBERIAN STURGEON (ACIPENSER BAERII BRANDT, 1869), IN A RECIRCULATING AQUACULTURE SYSTEM, WITH DIFFERENT STOCKING DENSITIES

The paper is presenting aspects regarding the influence of stocking density on the breeding of siberian sturgeon, in a recirculating aquaculture system (RAS). The experiment took place over 30 days, in four pilot breeding units type aquaria of 300 liters in volume. Two kind of variants were compared, with repetition V1 (B1, B2) and V2 (B3, B4) respectively. The stocking density was of 11 fish/unit in V1 (1,58 kg/ m3) and 22 fish/unit in V2 (3,17 kg/m3). The same feeding quantity of 20 g/kg. metabolic weight (3,7% from total biomass) was used in every unit. The technological indicators that showed up at the end of the experiment revealed the following:•