walnut is produced by METROVET a division of CARGILL (maker of PURINA feeds).
I am not surprise na pagdudahan ni sir UtakP na marketing ploy lang eto....nevertheless on a technical point of view the possibility is true.
Adding more amino acids on a low density/cheap feeds will improve it nutrient profile.
HOWEVER, wil will it GUARANTEE the right performance? Ang pagdududa ko ay base on that fact that:
1) The high fiber by-products (like copra or pollard or rice bran etc) used in low density feeds are still very high. Even if you add a product like that, you can not easily dilute that.
2) Adding the product (amino lean) will also increase the cost... so what is the difference (as pointed out by jadef) of that from buying the right product from the start. Hindi ka rin naman makakatipid pala.
3) There are too many combinations or variability sa content ng mga low density feeds (cheap feeds). That alone will not guarantee the improvement that you will expect na between brands.
To prove that it work, the only thing left for your to do is to try it... and see if tutuo nga ang claim nila.
On the side note, if jadef evaluation of walnut aminolean composition is correct, this same composition is similar (but not necessarily equal) to those old-school products like - AFSILLIN of Novartis and UNIVITE of Unahco/Univet. Do they work?! well maybe...