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Microalgae Schizochytrium limacinum as an alternative to fish oil in enriching table eggs with n‐3 polyunsaturated fatty acids
Author(s) -
Kralik Zlata,
Kralik Gordana,
Grčević Manuela,
Hanžek Danica,
Margeta Polonca
Publication year - 2019
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.10052
Subject(s) - polyunsaturated fatty acid , docosahexaenoic acid , fish oil , food science , eicosapentaenoic acid , yolk , linoleic acid , biology , fatty acid , chemistry , fish <actinopterygii> , biochemistry , fishery
Abstract BACKGROUND The research deals with the addition of microalgae Schizochytrium limacinum as an alternative to fish oil in a feed‐mixture for laying‐hens and its effect on the deposition of n‐3 polyunsaturated fatty acids (n‐3‐PUFAs) [α‐linoleic acid (ALA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)] in the lipids of egg yolks. In the study, 240 Tetra SL laying hens housed in enriched cages were used, divided into six groups, each in five repetitions. Groups E1, E3 and E5 were given 0.5%, 1.0% and 1.5% microalgae and groups E2, E4 and E6 were given feed mixtures with 0.5%, 1.0% and 1.5% fish oil. The mixtures were modified on the basis of 17% of the crude protein and 11.7 MJ ME kg ‐1 . RESULTS The results showed satisfactory disposal of n‐3 PUFA in egg yolks of laying‐hens fed mixtures with the addition of either fish oil or microalgae. Eggs of E1, E3 and E5 groups contained in 100 g: 321.07 mg, 361.60 mg and 399.34 mg n‐3 PUFA, respectively ( P < 0.001). Eggs of E2, E4 and E6 groups contained in 100 g: 346.25 mg, 346.17 mg and 369.02 mg n‐3 PUFA, respectively ( P < 0.001). By increasing the content of fish oil or microalgae in feed‐mixtures for laying hens, the ratio of n‐6/n‐3 PUFA in egg yolk lipids ( P < 0.001) was decreased. CONCLUSION Our results justified the usage of the microalgae Schizochytrium limacinum in the enrichment of table eggs with n‐3 fatty acids as an alternative feed to fish oil. © 2019 Society of Chemical Industry