Published in Scientific Papers. Series D. Animal Science, Vol. LXVI, Issue 1
Written by Marcel Daniel POPA, Viorica SAVIN, Ira-Adeline SIMIONOV, Florentina LĂCĂTUȘ, Elena-Ioana COMAN, Elena-Cristina OANCEA, Floricel Maricel DIMA, Neculai PATRICHE, Cătălina ITICESCU
To evaluate the growth of sterlet sturgeon (Acipenser ruthenus, Linnaeus 1758) in different rearing production systems (recirculating aquaculture system - RAS and earthen ponds system), the meat quality (biochemical profile), growth (allometric and Fulton coefficient) and mortality indices were determined. Sterlet sturgeon specimen were reared for 60 days in a RAS system, after which half of the biological material was transferred into earthen ponds, while the other half was further reared in the RAS system. The physico-chemical parameters of the technological water were monitored during the experimental period. The fish specimens were fed by using the same feed and the same feeding strategy. It was observed that the specimen reared in earthen ponds presented an isometric growth, while those reared in the RAS system had a positive allometric growth. The results registered after biochemical fish meat analysis highlighted that specimen reared in earthen ponds had a higher protein concentration compared to the ones reared in RAS system. As well, the survival rate of fish individuals was higher in the earthen ponds system.
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