Wrong? maybe. I was speaking from experience---take phos, several sources, some of which are cheaper--but less available than others.  take energy or protein---many sources, you can meet the tag with but it changes palatability and consumption.

I dunno---maybe loomix might not have people that play these games.  For the sake of the people dealing directly with users--and users--- I hope they don't.  On a related note, my 'scientific' kid has been doing some interesting things with local ingredients  "it's  about fiber digestion/utilization, Dad....." we agree----we  never try to starve a profit out of any animal, deal or anybody else---but meeting all nutritional requirements----@ lowest possible cost---is a worth while goal.   I've said for yrs---anyplace that you see 'cooked tubs' being sold for supplement----it's a birdnest on the ground for a competent liquid feed fabricator or salesman.  I back my kids and give 'em rope and let 'em run,  my 'liquid' deals lately are oil------I do like bargains.   but the cows are the ones paying the bills. Good luck to ya'