Archivos Latinoamericanos de Nutrición· 2026Q4
Effect of flaxseed oil in diet on fatty acid composition in the liver of Nile Tilapia (Oreochromis niloticus)
- 29citations
- Q4SCImago
- 2026year
Short summary
Adding flaxseed oil to Nile tilapia feed significantly increases liver levels of alpha-linolenic acid (LNA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). Liver LNA increased from 4.2 to 51.2 mg/g lipids, EPA from 0.2 to 2.3 mg/g, and DHA from 10.6 to 56.2 mg/g as flaxseed oil inclusion rose to 5%.
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Key points
- Dietary flaxseed oil significantly increases liver LNA, EPA, and DHA in Nile tilapia.
- Liver LNA increased from 4.2 to 51.2 mg/g lipids with 5% flaxseed oil inclusion.
- Liver EPA increased from 0.2 to 2.3 mg/g lipids with 5% flaxseed oil inclusion.
- Liver DHA increased from 10.6 to 56.2 mg/g lipids with 5% flaxseed oil inclusion.
- No significant differences were observed in liver moisture, ash, protein, or total lipid content across treatments.
AI-generated from the title and abstract; the full text is not read.
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.
The authors' abstract, as published at the source. Archivos Latinoamericanos de Nutrición, 2026 · DOI ↗
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Field: Nutrition and Dietetics
Nutrition and DieteticsNursing