Fish Oil-Enriched Live Feed Boosts Omega-3 Levels in Farmed Fish Larvae
Researchers tested whether enriching a common live feed (Tubifex worms) with different fish oils could improve the fatty acid content and growth of young Thai mahseer, a freshwater fish raised in aquaculture.
Worms were soaked in squid oil, sardine oil, or catfish oil for 18 hours before being fed to fish larvae, with an unenriched group used for comparison. The team measured fatty acid levels in the worms, then tracked the larvae’s growth, weight gain, and survival over about two and a half weeks.
All three oil treatments significantly raised the levels of total lipids, polyunsaturated fats, and omega-3 fatty acids in the worms compared to the unenriched control, confirming that this enrichment method can meaningfully change the fat composition of live feed.
What this means for you
This study is about aquaculture feed science, not a human supplement trial, but it illustrates a core idea behind omega-3 nutrition: the fatty acid profile of a diet can be deliberately shifted by what’s fed to the animal (or person) earlier in the food chain, which is part of why fish oil source and processing matter.
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Pakistan journal of biological sciences : PJBS · 2026-10-01 · DOI: 10.3923/pjbs.2026.351.361
Read the original source ↗This summary is for educational purposes only and is not medical advice. Always talk to your healthcare provider before making changes to your supplement routine.