ahem..no.
bones are ground and used for a number of purposes, cattle-food component, for instance..brains are eaten or used as components for various kinds of salami, viscera are used to stuff salami in (the film that surrounds the meaty part you eat..is in fact just that)..and I'm sure there are other uses too.. skin..cowhide and pighides are..well.. leather.. and used for other stuff too...
it's a centuries old saying/truism, in Italy at least, that you don't throw away any part of a pig.
so..no.