RESEARCHES REGARDING THE TECHNOLOGICAL PERFORMANCES OF CARP REARING DURING WINTER PERIOD IN THE CONDITIONS OF A RECIRCULATING AQUACULTURE SYSTEM
Keywords:
recirculation system, common carp, rearing, temperatureAbstract
The techniques of carp culture are highly diversified, ranging from the extensive
production in pond or open water with no fertilization or supplemental feeding to
highly intensive systems in concrete tanks or cages. Among the different carp
species, common carp is the best species reared in intensive monoculture, the others
(Chinese and Indian carps) being usually cultivated in polyculture (P. Kestemont,
1995). An experiment was conducted in inside recirculation system conditions to
identify the technological performances on carp growth and survival at the Fishing
and Aquaculture Department, Galati, during winter period (February, 2007 –
March, 2007). The 1-year-old carp (Cyprinus carpio) 4792g; 4594 g; 4561 g and
4525 g (total weight) grew to 7384g; 7017g; 6924g and 7125 g in 44 days in
aquarium 1, 2, 3 and 4, respectively. In all aquariums, the fish appeared healthy and
no mortality was observed. Feed conversion efficiencies (FCE) had similar values
among all aquariums, the highest FCE being found in B4 aquarium with 1, 57 value.
Water quality parameters were acceptable range for fish culture. Results show that
the carp rearing during winter period in the inside recirculation system is a very
good economic solution.
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