My only experience with an industrial grade wood chipper and animal carcasses is as follows.
When I was in British Columbia working for their equivalent of Fish and Wildlife we did an experiment to see if we could boost the nutrient levels in streams with depressed salmon runs (most of the nutrients to support aquatic life in west coast salmon streams come from the rotting carcasses of spawned salmon). We froze some chinook and chum salmon we got from streams with good runs and ran them through a chipper and into streams with poor runs. Turned out not to be a practical long-term solution, but it was a hoot to try.
