I add Alnutrin (the products for meat and bones) to the meat, bone, and organs that I buy from Hare-Today. I mix up is 80% meat, 10% bone, and 10% organ (5% being a secreting organ).
I add the Alnutrin (for meat without bones) to the meat I buy and grind myself
Half the world states that cats and dogs need the added vitamins and minerals... the other half says not if one is feeding 80/10/10. Sooooo, I don't add anything to the ground mixture that I buy from (for example) Raw Feeding Miami. The product I buy from them is 80/10/5/5.
And THAT is why there are always at least 3 sources in our feeding rotation!