Please use this identifier to cite or link to this item: http://hdl.handle.net/10524/49204

Growth, Survival and Fatty Acid Composition of Freshwater Crayfish (Astacus leptodactylus) Juveniles Fed Enriched Daphnia magna as an Alternative to Artemia

File SizeFormat 
IJA_67.2015.1192.Koca.pdf475.81 kBAdobe PDFView/Open

Item Summary

Title: Growth, Survival and Fatty Acid Composition of Freshwater Crayfish (Astacus leptodactylus) Juveniles Fed Enriched Daphnia magna as an Alternative to Artemia
Authors: Koca, Seval Bahadir
Yigit, Nalan Ozgur
Uzunmehmetoglu, Esra
Guclu, Zekiye
Diken, Gurkan
show 1 moreEralp, Hasan
show less
Keywords: Daphnia magna enricment
anchovy oil emulsion
Astacus leptodactylus
survival
LC Subject Headings: Fish culture--Israel.
Fish culture.
Issue Date: 2015
Abstract: This experiment was conducted to investigate the effects Daphnia magna enriched with lipid emulsions as an alternative to Artemia, on growth, survival rate, and fatty acid composition of freshwater crayfish (Astacus leptodactylus Esch. 1823). The four treatment groups were (a) unenriched Artemia (UEA), (b) unenriched D. magna (UED), (c) D. magna enriched with redpepper emulsion (DER), and (d) D. magna enriched with anchovy oil emulsion (DEA). All tests were carried out in triplicate for 30 days. The crayfish (mean weight 0.12g) were fed ad libitum once daily. At the end of experiment, the highest eicosapentaenoic acid, 20:5n-3 (EPA) level was found in the DEA group (5.77%). The highest DHA (docosahexaenoic acid, 22:6n-3) level was found in the DER group (2.73%) which was statistically similar to the DEA group. In addition, high n-3 HUFA (high unsaturated fatty acid) levels were detected in enriched D. magna groups with emulsions. However, high EPA levels in enriched D. magna groups with emulsions were not reflected in crayfish tissues, but DHA level was reflected in crayfish tissues fed with anchovy oil emulsion. The crayfish fed with D. magna showed similar growth to that of the Artemia fed groups. The growth of the enriched D. magna groups did not differ.
Pages/Duration: 8 pages
URI/DOI: http://hdl.handle.net/10524/49204
ISSN: 0792-156X
Appears in Collections:Volume 67, 2015



Items in eVols are protected by copyright, with all rights reserved, unless otherwise indicated.