date:May 14, 2014
of the fish were given feed in which only 10 per cent of the fat came from fish oil, with the remaining 90 per cent from rapeseed oil.
An investigation carried out by Nofima of the three largest feed suppliers has shown that the corresponding figures for commercial feed last year were approximately 35 per cent from fish oil and 65 per cent from rapeseed oil.
Larger smolts richer in omega-3
The results from the experiment showed that salmon that had remained in freshwater until they weighed 4