Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 1
Written by Anca Nicoleta CORDELI (SĂVESCU), Lucian OPREA, Mirela CREȚU, Mihaela MOCANU
To determine the influence of stocking density on the common carp growth performance and body composition, four variants: 0.9 kg m-3 (V1), 1.8 kg m-3 (V2), 2.6 kg m-3 (V3), and 3.5 kg m-3 (V4) was carried out during 31 days. In this context, 2100 common carp fry, with an initial weight of 1.8 g fish-1, were maintained in twelve rearing units of a recirculating aquaculture system. Fish were fed three times per day with extruded feed containing 50% crude protein and 14% fat. At the end of the experiment, the fish's growth performance was assessed. Better results were obtained for the V1 variant. Regarding the biochemical composition of fish meat, significant differences (p˂0.05) were recorded in the water content, while the ash lipids and protein content showed no significant differences (p˃0.05) between the experimental variants. Therefore, it can be concluded that a stocking density of 0.9 kg m-3 is optimal for rearing juveniles of common carp without compromising the specific growth rate (SGR), survival, and biochemical composition of fish meat.
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