Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 1
Written by Stefan-Mihai PETREA, Alina MOGODAN, Ira-Adeline SIMIONOV, Aurelia NICA, Daniela Ancuța ȘARPE, Victor CRISTEA
In order to assure high financial sustainability of intensive sturgeon aquaculture, a proper feeding rate must be identified for different stages of growth. Therefore, the present study aims to evaluate the effect of two different feeding rates (F1 - 1% biomass weight BW, respectively F2 - 2% BW) on growth performance of A. stellatus, with a mean individual biomass of 201.7±32.82 g, reared in intensive conditions. The F2 experimental variant register, overall, a better feeding efficiency, revealed by feed conversion rate (FCR) average value (1.02 g feed/g biomass gain), compared to F1 (1.28 g feed/g biomass gain). Also, the sturgeon exemplars from F2 experimental variant manifested, overall, a superior ability of using feed protein for growth (higher average protein efficiency ratio - PER: 2.39 g/g), compared to F1 (PER: 1.95 g/g). The feeding rate applied at F2 assures the maximization of sturgeon production quantity, emphasized by the higher overall values of average specific growth rate (SGR: 1.74% BW/day at F2, compared to 0.78% BW/day at F1). The biomass and length coefficients of variation (CVw, respectively CVL) indicate, for both experimental variants, a high homogeneity degree of stellate sturgeon experimental population (CVw: 16.51% at F1 and 12.53% at F2, respectively CVL: 5.29% at F1 and 4.43% at F2, both registered at the end of the experiment). Therefore, it is recommended to apply 2% feeding rate in order to assure a better efficiency of sturgeons rearing technology, during the analyzed growth stage.
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{simplepopup popup="false" name="Citation78"}PETREA S.M., MOGODAN A., SIMIONOV I.A., NICA A., SARPE D.A., CRISTEA V. 2020, THE INFLUENCE OF FEEDING RATE ON GROWTH PERFORMANCE OF Acipenser stellatus (Pallas, 1771) REARED IN INTENSIVE CONDITIONS. Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 1, ISSN 2285-5750, 534-540. {/simplepopup}