What factor drastically influences the final nutrient ratios for both salmon and herring?
Answer
Wild-caught versus farmed status
The nutritional composition of both salmon and herring is not fixed; it is highly susceptible to external variables related to how and where the fish lived and was raised. A critical differentiator that significantly impacts the final measured ratios of vitamins, minerals, and fatty acids in a fillet is whether the fish was harvested from its natural environment (wild-caught) or raised under controlled conditions (farmed). For example, the diet provided to farmed fish can alter their fat profile compared to wild populations, leading to variations that must be accounted for when making direct nutritional comparisons between species.
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