These are the AAFCO definitions of meat and meat meal.
"Meat is the clean flesh derived from slaughtered mammals and is limited to that part of the striate muscle which is skeletal or that which is found in the tongue, in the diaphragm, in the heart, or in the esophagus; with or without that accompanying and overlying fat and the portions of the skin, sinew, nerve, and blood vessels which normally accompany the flesh. It shall be suitable for use in animal food. If it bears a name descriptive of its kind, it must correspond thereto."
"Meat Meal is the rendered product from mammal tissues, exclusive of any added blood,hair, hoof, horn, hide trimmings, manure, stomach and rumen contents except in such amounts as may occur unavoidably in good processing practices. It shall not contain added extraneous materials not provided for by this definition. The Calcium (Ca) level shall not exceed the actual level of Phosphorus (P) by more than 2.2 times. It shall not contain more than 12% Pepsin indigestible residue and not more than 9% of the crude protein in the product shall be pepsin indigestible. The label shall include guarantees for minimum crude protein, minimum crude fat, maximum crude fiber, mimimum [sic] Phosphorus(P) and mimimum [sic] and maximum Calcium (Ca). If the product bears a name descriptive of its kind, composition or origin, it must correspond thereto."
Combining Bill-Jac and Eukanuba might be OK, it depends on the amounts of protein of each and the ratio.
