The effect of supplementary feeds quality on growth performance and production of common carp (Cyprinus carpio L.) at one summer of age, in ponds aquaculture systems

The paper presents some aspects regarding the influence of food quality on common carp (Cyprinus carpio) fry and juveniles, fed with different extruded and expanded pellets. The experiment covered 120 day-period, and was carried out in four small breeding units, type pond, 5000 m2 each. Two kind of...

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Veröffentlicht in:Aquaculture, Aquarium, Conservation & Legislation Aquarium, Conservation & Legislation, 2015-08, Vol.8 (4), p.602-610
Hauptverfasser: Mocanu, Mihai C, Vanghelie, Tiberiu, Sandu, Petronela G, Dediu, Lorena, Oprea, Lucian
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Sprache:eng
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Zusammenfassung:The paper presents some aspects regarding the influence of food quality on common carp (Cyprinus carpio) fry and juveniles, fed with different extruded and expanded pellets. The experiment covered 120 day-period, and was carried out in four small breeding units, type pond, 5000 m2 each. Two kind of variants were compared, with repetition: V1, using pellets with 48% and 35% crude protein and V2 using pellets with 48% and 30% crude protein, respectively. The stocking density was of 30000 fish ha-1 (30 kg ha-1), in each variant. The same feed quantity and feeding level was used in every unit. At the end of the experiment the technological indicators revealed the following: the mean biomass gain was 3825 kg ha-1 in V1, compared with 3510 kg ha-1 in V2. This was correlated with the quality of pellets used, more favorable in V1; the mean growth rate of fish biomass (GR) varied in a similar way, from 31.88 kg day-1 in V1 to 29.25 kg day-1 in V2. The differences were also influenced by the pellets quality; the mean specific growth rate of fish biomass (SGR) was 4.05% day-1 in V1 and 3.98% day-1 in V2. This shows that the fish growth was very good, in both variants; the mean feed conversion ratio (FCR) was 1.26 kg of pellets per kg weight gain in V1 and 1.38 kg of pellets per kg weight gain in V2. The FCR values are very good for fishponds system. The quality of supplementary feeds positively influenced the FCR final value. The fish breeding parameters showed that variation in feed quality, in term of crude protein end gross energy, positively influenced the growth performance of common carp fry and juveniles, fish biomass gain and feed conversion.
ISSN:1844-8143
1844-9166