Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 2
Written by Aurelia NICA, Alina MOGODAN, Ira-Adeline SIMIONOV, Stefan-Mihai PETREA, Victor CRISTEA
The identification of suitable fish stocking density proves to be essential in order to elaborate a sustainable fish rearing technology. The aim of present study is to identify a proper stocking density for juvenile ornamental carp, that maximizes the productivity of this specie, in semi-intensive aquaculture production systems. Thus, two ornamental carp stocking densities were tested, in duplicate (V1 – 6.3 kg/m3, respectively V2 – 7.01 kg/m3). The results indicate a better feed conversion ratio (FCR) in case of V1, compared to V2. Also, V1 registered higher specific growth rate (SGR) values and a better protein efficiency ratio (PER). However, in order to maintain the technological water quality within the optimum range for rearing ornamental carp, a higher water exchange rate was applied at V2, compared to V1, especially in the first part of the experimental period. The FCR registered better values in the first part (1.5% feeding ratio was applied), compared to the second part of the experimental period (1% feeding ratio). However, if production maximization is required, higher ornamental carp stocking densities and feeding ratio can be applied if water quality module will be improved.
[Read full article] {simplepopup link="Citation74"}[Citation]
{/simplepopup}
{simplepopup popup="false" name="Citation74"}NICA A., MOGODAN A., SIMIONOV I.A., PETREA S.M., CRISTEA V. 2020, THE INFLUENCE OF STOCKING DENSITY ON GROWTH PERFORMANCE OF JUVENILE JAPANESE ORNAMENTAL CARP (KOI, CYPRINUS CARPIO L.). Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 2, ISSN 2285-5750, 483-488. {/simplepopup}