Performance assessment of Re-use Mariculture System for Mini Farm in Rearing Sparus aurata and Dicentrachus labrax

M. Helal, Amr; M. Mustafa, Mona

doi:10.21608/ejabf.2019.30981

Performance assessment of Re-use Mariculture System for Mini Farm in Rearing Sparus aurata and Dicentrachus labrax

Document Type : Original Article

Authors

10.21608/ejabf.2019.30981

Abstract

The objective of the present research is to assess the performance of re-used mariculture system on growth rate and percent survival of S. aurata and D. labrax fish; more over to evaluate water quality, which affects fish production. The results revealed that the degree of re-used sea water was 96.7% which equal 65 L daily and the new water added /Kg fish was 8.8 L/Kg juvenile S. aurata daily and 3.28 L/Kg fries D. labrax daily. The physicochemical and biological water measurement (T°c, pH, S%, DO, NH₃, NH₄⁺, NO₂^-, NO₃^- and BOD) are in acceptable range in the two experiments for S. aurata and D. labrax. The result explained that the survival rate were 96% and 91% for S. aurata and 76.7% and 81.6% for D. Labrax in Tank1 and Tank2 respectively. The growth performance parameters (WG, ADG, SGR, FCR, PER and K) were reported for the two experiments. The length-weight relationship for S. aurata indicate that the high length, the increase in weight with R² = 0.9596 and 0.9966 for Tank1 and Tank2 comparing with 0.8474 for control. Therefore the significant success of rearing S. aurata and D. labrax in RMS for mini farm was achieved in water management by improving the efficiency of biological filter.

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