Thanks to regular reader and commenter Dev for suggesting this for our library. We have added it to the “Feed” section.
Critics of aquaculture often cite that it takes X pounds of feed to grow one pound of fish and that this is unsustainable.
However, the calculation they often use to come up with this figure is wrong, because their calculations fail to account for the fact that the same fish is used to make both fishmeal and oil;how moisture is a factor; and also that trimmings from other fisheries are used to make fishmeal and oil.
The ratio for salmon, according to the FIFO calculations, is 1.68 to 1.