The answer to the rodent/blender fiasco
is yes, it has been done. I have it in my notes from last weeks class, if interested I"ll post it.
I'm sure that these sausage things are pretty darn close to the real thing. Although if I was going to produce such a thing I'd probably use rodents instead of beef. That is my main question, is the source of ingredients. Is this just the scraps off the kill floor? It sure would be cheaper than making a rat sausage. Additional questions I have pertain to the fact that the two first ingredients are beef (the meat) and beef heart. After that, the ingredients are all meant to "supplement" this inbalanced staple. This recipe begs for miniscule mistakes to be made.
Other factors are unknown. For instance, we (nutritionists) have a good understanding of pretty much every component of food and physiology, BUT, discoveries are still made, perhaps most recent are the anti-oxidants and the their affects on free radicals withen the body. (Who knew random missile electrons were a problem!) All in all, we don't know everything and that leaves room for error when trying to chemically make a complete diet. As long as rodents breed like rodents, I'll be feeding whole body prey 