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Peer-reviewedCC BY-NC-NDArchivos Latinoamericanos de Nutrición

Effect of flaxseed oil in diet on fatty acid composition in the liver of Nile Tilapia (Oreochromis niloticus)

  • Ana Carolina de Aguiar1,2
  • Damila Rodrigues de Morais1,2
  • Leandra P. Santos1,2
  • Flávia Braidotti Stevanato1,2
  • Jeane Eliete Laguila Visentainer1,2
  • Nilson Evelázio de Souza1,2
  • Jesuí Vergílio Visentainer1,2
  1. 1Universidade Estadual de Maringá. Maringá. Brazil
  2. 2Universidade Estadual de Maringá, Maringa, Brazil
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Abstract

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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Cite

BibTeXRIS
BibTeX
@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 Vergílio Visentainer},
  journal = {Archivos Latinoamericanos de Nutrición},
  year = {2026},
  month = jun,
  doi = {10.37527/2007.57.3.009},
  url = {https://doi.org/10.37527/2007.57.3.009},
  note = {CC BY-NC-ND},
}
RIS
TY  - JOUR
TI  - Effect of flaxseed oil in diet on fatty acid composition in the liver of Nile Tilapia (Oreochromis niloticus)
AU  - Ana Carolina de Aguiar
AU  - Damila Rodrigues de Morais
AU  - Leandra P. Santos
AU  - Flávia Braidotti Stevanato
AU  - Jeane Eliete Laguila Visentainer
AU  - Nilson Evelázio de Souza
AU  - Jesuí Vergílio Visentainer
PY  - 2026
DA  - 2026/06/15
JO  - Archivos Latinoamericanos de Nutrición
DO  - 10.37527/2007.57.3.009
UR  - https://doi.org/10.37527/2007.57.3.009
AB  - 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.
SN  - 0004-0622
SN  - 2309-5806
ER  -