Research
Mixed
Replacing fish oil with vegetable oils in aquaculture feeds reduces the EPA/DHA content of farmed fish, negatively impacting the nutritional quality for human consumers.
If you buy farmed salmon, check if it is 'fish-oil-fed'. If it is fed vegetable oils, its Omega-3 (EPA/DHA) content will be lower. To get the full benefit, look for products using novel Omega-3 sources (algae/yeast) or wild-caught fish.
GoodSupportsHIGH confidence
the consequently lower levels of EPA and DHA in feeds was reflected in the farmed fish, impacting the nutritional quality of the farmed products
Why this rating
Supported by specific data on salmon flesh composition over time (Figure 2) and citations [31,32].
Source
Omega-3 Long-Chain Polyunsaturated Fatty Acids, EPA and DHA: Bridging the Gap between Supply and Demand
Douglas R. Tocher et al. · Nutrients · 2019
DOI 10.3390/nu11010089
narrative_reviewCited 564×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Current global supplies of EPA and DHA from traditional marine sources are insufficient to meet human nutritional requirements, creating a supply-demand gap of over 0.4 to 1 million tonnes annually.Good
- Novel sources of EPA and DHA, such as genetically modified oilseed crops (canola/camelina) and microalgae, can fully replace fish oil in aquaculture feeds without negative impacts on fish growth or health.Good
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