Functional yeast protein improves fish health in reduced fishmeal diets

Dear Paul, thank you for your comment. This specific trial targeted young stage animals, and to demonstrate scientifically the effects of the yeast functional protein in the gut health, when formulating with increased plant proteins. I do agree that running a full cycle trial would amplify the negative impacts from gut inflammation and reduced digestibility of amino acids. In our approach, the lab scientific validation is the starting point to a later validation under farm/specific conditions with our customers and partners. Feed formulation and aquaculture environment are two very dynamic things exposed to complex multifactorial interactions, and that’s why we work on developing solutions to mitigate the impact of suboptimal and extreme conditions in the animals.

Yes, I believe that there are lots of viable substitutes - blue algae, (various) fly larvae, earthworms, cockroaches..., , all depending on the formulator's skill, the fish in question (nutrient requirement) and the culture environ (water quality / available nutrient). The main issues are ensuring that it's economical, sustainable and healthy.