While 20 years ago making fish feed was a matter of throwing together some fishmeal, fish oil, some wheat flour, vitamins and minerals, today it is much more complex.
The fat content in salmon feed back in the 1990s was predominantly fish oil. Today this is being increasingly replaced, and now 70-80 percent of the fat in a farmed salmon's diet has been replaced.
About 20 percent comes from fishmeal or fish oil and 80 percent from a mixture of different vegetable oils, such as soy bean oil, rapeseed oil, linseed oil.
“We
