Originally Posted by
Art
Those parts of the pig are destined for the above mentioned potted meat, Vienna sausage, cheap hot dogs and cheaper sausage, and pet food. Those are the big products from what's swept up off the slaughterhouse floor. I remember when I was a kid the actual ingredients were on the label and included stuff like pig snouts and ears. They don't do that anymore. Now its "meat by products." The meat in SPAM I understand is pretty much as advertised s meat by products aren't included in the ingredients. Remember, it was invented as a way to use pork shoulder which was also undesirable.
You are correct, as anyone who has been to a slaughterhouse can testify, nothing edible is wasted. However about half of a carcas, excluding the hide, is "dead stock" which is recycled into a variety of non food products. Dead stock can include euthanized pets and livestock that has died on its own.
One of my favorite swept up off the slaughterhouse floor meats is Mexican chorizo from a Mexican butcher shop or market. Ingredients that are always in this yummy sausage, if its the real stuff include among other stuff are pig thyroids, pancreas and other scrap gland meat as well as any other meat "trimmings" from the pig. One of my favorite breakfasts is chorizo scrambled with eggs, yummy chow.