Published in Scientific Papers. Series D. Animal Science, Vol. LXII, Issue 2
Written by Aurelia NICA, Daniela-Cristina IBĂNESCU, Adina POPESCU
Koi carp are descendants of the common carp, Cyprinus carpio. The production of the colored carp – the Japanese “nishikigoi”- presently exceeds in monetary value the production carp as human food. The researches were performed in Aquaculture and Fishing Department laboratory of Food Science and Engineering Faculty from January 8 to June 24, 2014. The experiments were conducted during five experimental periods. During the mentioned periods it was experimented two variants in aquariums with capacity of 150 l provided with independent aeration and filtration units. In V1 variant, an aquarium was populated with 14 koi carp fingerlings with mean initial weight of 5, 35 g/ex. and a total biomass of 75 g. In V2 variant, another aquarium was populated with koi carp fingerlings with mean initial weight of 29, 28 g/ex., respectively a total biomass of 205 g. Water temperature, dissolved oxygen and pH were measured every day with portable instruments. For feeding fish it used Nutra T (V1 variant) and Nutra 2.0 (V2 variant) pellets. At the end of experiments, mean final weight reached 1570 g for V1 variant and 1446 g for V2 variant.
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