I started thinking about raising my own meaties recently... I think I would start out with 25 Cornish X (McMurray Jumbo Cornish X, to be specific). I've read on here that they are messy and nasty up until butchering time..... but just how gross are they? Do they burn through feed? Anybody have any experience with these particular birds? I just want to make sure I'm not getting in over my head here. Thanks!