“We can evaluate a (potential) ingredient that has all the characteristics we want, but if it’s not a commodity, it’s not available to feed manufacturers,” said the UI extension aquaculture specialist.
Researchers developed two experimental diets, one plant-based and the other animal-based. Neither diet contained fish meal, but both used fish oil as an energy source. The experimental diets were tested in a laboratory, then in commercial raceways and finally, the resulting filets were taste-tested by both the aquaculture producers and the general public.