研究人员认为，养殖业者将其他鱼类磨成的高脂肪鱼粉，拿来当成饲料，而野生大麻哈鱼吃的则是大海中的浮游生物，这导致人工养殖大麻哈鱼吃下比野生大麻哈鱼多出好几倍的污染物。

While salmon in the wild eat a variety of things in the ocean farm raised ones eat a high fat feed made of other fish ground into fishmeal and as a result eat even more of those toxins.

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