Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67, 91-99

https://doi.org/10.11118/actaun201967010091
Published online 2019-02-28

The Utilization of Algae with the Aim to Increase the Fatty Acid Content in Muscle of Common Carp (Cyprinus carpio L.)

Radovan Kopp1, Tomáš Brabec1, Jan Mareš1, Eliška Maršálková2, Blahoslav Maršálek2

1Mendel University in Brno, Faculty of Agronomy, Department of Fisheries and 6 Hydrobiology, Zemedelska 1, Brno 61300, Czech Republic
2Czech Academy of Sciences, Institute of Botany, Lidicka 25‑27, Brno 60200, Czech Republic

Received January 4, 2018
Accepted November 21, 2018

The aim of this study was to evaluate the efficiency of feeds with the addition of various algae and cyanobacteria. Common carp (average body mass of 19.6 ± 3.49 g) were randomly divided into 4 groups and fed a commercial feed (control group), the same commercial feed with the addition of 10 % of dry green algae of the genus Chlorella (chlorella group), dry biomass of algae from waste water treatment (algae group), and lyophilized toxic cyanobacterial biomass of the genus Microcystis (microcystis group). After 29 days of the experiment, standard indices for the assessment of feed utilization, external characteristics, fish condition, chemical composition of muscles and composition of fatty acids were measured. The feed variants with the addition of green algae (chlorella and algae groups) appeared to be nutritionally more favorable in our experiment. A higher content of PUFAs and total amount of fats (expressed in units of weight) were found in the groups of fish fed the green algae and algae from waste water treatment supplemented feed.

Funding

This work was supported by the research project of the National Agency for Agricultural Research (QJ1320234, QJ1510077) and OP VVpI CZ.1.05/4.1.00/04.0135.

References

29 live references