Can long chain n-3 fatty acids from feed be converted into very long chain n-3 fatty acids in fillets from farmed rainbow trout (Oncorhynchus mykiss)?

Evaluation of n-3 Polyunsaturated Fatty Acid Content in Various Foods: Health Impact Assessment

“…The n-6/n-3 PUFA ratio of cold-smoked mackerel was 0.15, similar to that of smoked salmon (Djordjević et al, 2016). Fish generally has high EPA+DHA ratios with low n-6/n-3 PUFA ratios, as was shown for rainbow trout with an n-6/n-3 PUFA ratio of 0.62-0.72 (Trbović et al, 2012;Lušnic Polak et al, 2017) and carp reared with extruded or pelleted feed, with an n-6/n-3 PUFA ratio of 3.79 (Ćirković et al, 2011). Certainly, even more favourable n-6/n-3 ratios in fish can be achieved by animal dietary measures.…”