"Meat byproducts" refers to the parts of an animal that are not consumed as regular cuts of meat. These byproducts can include organs, bones, blood, and other leftover parts. Full definition
Its main advantage over other products is that it doesn't contain meat byproducts which you often find in canned food as manufacturers try to bulk up the product with less nutritious ingredients. (moberrypets.com)
Human grade whole meat such a chicken, beef, or lamb (not meat byproducts or «meal») is the best choice, and should be listed first on the ingredient label. (my-favorite-dog.com)
Connoisseur canned cat foods typically function meats, such as kidney or liver, and entire meat byproducts as main ingredients. (gulfcoastvetspec.com)