Mutts and Cats,
Apparently, though I hit “edit” after I accidently submitted, I must not have edited it quick enough, and my original post was posted.
What I added was that the second manufacturer also confirmed that there was significant bone in their “meat”. It could be that as a commodity, striate muscle may be reclaimed by grinding and then passing a bone /muscle mixture through a screen. The bone that passes through the screen then becomes part of the mix and accepted as a “measure of good processing”. But honestly, I do not know in what forms these commodities are available to manufacturers.
IMO if a manufacturer desires to formulate for high protein from striate muscle they may accept as trade off a high mineral content if using a product of that type.
Personally, I tend to avoid foods with high mineral content.
