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Aquaculture International

, Volume 26, Issue 2, pp 695–711 | Cite as

Proximate and fatty acid composition of 13 important freshwater fish species in central Europe

  • Zuzana Linhartová
  • Jakub Krejsa
  • Tomáš Zajíc
  • Jan Másílko
  • Sabine Sampels
  • Jan Mráz
Article

Abstract

We aimed to investigate proximate and fatty acid composition of important freshwater fish species in the Czech Republic. Sampled fish include seven species from intensive farming: African catfish, rainbow trout, Wels catfish, Nile tilapia, brook trout, northern whitefish, and pikeperch; eight species from semi-intensive culture systems: common carp, northern pike, pikeperch, grass carp, European perch, tench, silver carp, and catfish; and three species from extensive culture systems: rainbow trout, tench, and common carp. The fat content and fatty acid composition were highly influenced by the culture systems. Simultaneously, we observed a significant dependence of fatty acid composition on the fat content. The content of saturated fatty acids was below 34% in all analyzed fish. Northern pike, pikeperch, and European perch contained with over 50% the highest proportion of polyunsaturated fatty acids. Intensively cultured fish reached the highest content of eicosapentaenoic and docosahexaenoic fatty acid. Nutritional quality was determined by atherogenic and thrombogenic indexes which ranged from 0.27 to 0.63 and 0.20 to 0.61 and by ratios n-3/n-6 (0.54–3.45) and polyunsaturated/saturated fatty acids (0.67–2.01). Results demonstrated that the flesh of all studied species are of high nutritional quality.

Keywords

Docosahexaenoic fatty acid Eicosapentaenoic fatty acid Fish flesh Lipid content Rearing systems 

Notes

Acknowledgements

Special thank belongs to our technician Kateřina Fulínová from the Laboratory of Nutrition for her kind help with analyses.

Funding information

The study was financially supported by the Ministry of Education, Youth and Sports of the Czech Republic—projects “CENAKVA” (No. CZ.1.05/2.1.00/01.0024), “CENAKVA II” (No. LO1205 under the NPU I program), by the Grant Agency of the University of South Bohemia in České Budějovice (No. 060/2016/Z), by the Ministry of Agriculture of the Czech Republic (No. QJ1510119).

Compliance with ethical standards

Conflict of interest

The author declares that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Faculty of Fisheries and Protection of Waters, Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Institute of Aquaculture and Protection of WatersUniversity of South Bohemia in České BudějoviceČeské BudějoviceCzech Republic

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