Fatty Acid Research and Health
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It is demonstrated that increasing amounts of LNA in feed may markedly increase the amounts of alpha-linolenic acid, EPA, and DHA in the liver of Nile tilapia.
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This study analyzed the effects of different concentrations of flaxseed oil (FO) on the proximate composition and the contents of alpha-linolenic acid (LNA, 18:3n-3), eicosapentaenoic (EPA, 20:5n-3), and docosahexaenoic (DHA, 22:6n-3) fatty acids in the liver of cultured Nile tilapia (Oreochromis niloticus). During the five-month culture period, tilapias were given diets with incremental concentrations of FO (0.00%; 1.25%; 2.50%; 3.75%, and 5.00%) as a replacement of sunflower oil (control). There was no significant difference in moisture and ash content in the liver between treatments. Protein values ranged from 12.1% (treatment II) to 13.9% (treatment V) and total lipids ranged from 5.6% (treatment V) to 7.2% (treatment II). There was no significant difference between most treatments. Fatty acid methyl esters (FAMEs) were quantitatively analyzed by capillary gas chromatography against a C(23:0), internal standard. Variations in concentrations (in mg g(-1) of total lipids) of fatty acids between treatment I and treatment V ranged from 4.2 to 51.2 (LNA), from 0.2 to 2.3 (EPA), and from 10.6 to 56.2 (DHA), respectively. This experiment demonstrated that increasing amounts of LNA in feed may markedly increase the amounts of LNA, EPA, and DHA in the liver of Nile tilapia.
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@article{Aguiar2026Effect,
title = {Effect of flaxseed oil in diet on fatty acid composition in the liver of Nile Tilapia (Oreochromis niloticus)},
author = {Ana Carolina de Aguiar and Damila Rodrigues de Morais and Leandra P. Santos and Flávia Braidotti Stevanato and Jeane Eliete Laguila Visentainer and Nilson Evelázio de Souza and Jesuí Vergilio Visentainer},
journal = {Archivos Latinoamericanos de Nutrición},
year = {2026},
doi = {10.37527/2007.57.3.009},
url = {https://doi.org/10.37527/2007.57.3.009}
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