Thanks for your answer.

I agree with you, confidentiality is a real issue. Data on a few commercial feeds are available in published studies but more or less drowned in more general digestibility studies, hence my request for any review or database.

Dear Carole,

Many thanks for this information, the International Aquaculture Feed Formulation Database (IAFFD https://www.iaffd.com/ ) seems to bring a lot of useful information about feed ingredient composition (and their digestibility) and fish nutrient requirements for many fish species.

I didn't know about this work, so thanks again.

In my opinion, the utility of this database could be even greater if digestibility data for complete commercial feeds were given or examples of ingredient formulations were given.

Sir, I think this is an issue of Intellectual Property Rights if your concern is about the complete commercial feeds formulation.

There are a lot of published studies regarding digestibility of formulated feeds using different kinds of ingredients which can also be found in commercial feeds.

Try this link https://www.sciencedirect.com/topics/food-science/digestibility

Thank you.