There's another way to look at it too.
Maybe people that have space to raise chickens should do that, as they can do so with far less difficulty and complication, and people with smaller properties could focus on high intensity crops, especially the kinds chickens tend to destroy. . .
I've become pretty concerned there's this huge rush out there with people digging up every last Mother Earth magazine and trying every last thing in them. There's blog upon blog too of people doing that, often quoting each other and back and forth, almost like a game of telephone. There's a reason that a lot of techniques get lost--it's not often that they don't work. Most of them do, which is why someone wrote an article about them. It's only after the fact that one figures out that while the technique works, it' doesn't pay, and well, there's the rub.
Rarely does complication of technique lead to efficiency. Not impossible, but rare.
Hey Norris, doesn't it seem that in the "bug bucket" you're actually losing a lot of valuable nutrition? Sure, you're growing maggots but I'm sure a 1lb of roadkill(at X calories) can only produce 1lb or so of maggots(at X - whatever the bugs consume for metabolism.) There's no energy input anywhere, so there can only be a loss. For a lot of animals that metabolic loss(of eating meat to create meat) is a huge loss. No doubt it varies. But it seems to me that if you compost the scraps you have the potential for feeding something that can actually create a value add--a plant, right?. People do the biopod to concentrate protein, from plant waste, mostly, but I still question the whole issue and wonder if real investigations can be done. It's easy to forget that plants alone create calories from sunlight-- animals only concentrate them, and pretty inefficiently-- and that's got to be key of the design.
I'm sure you know this, but wonder if it's been considered. I'd sure as hell concern myself with potential disease vectors, as well. The tropics can be hard to figure. You've got to be careful here with parasitic worms that can have all sorts of hosts, and those are often BIG and likely to not get consumed by maggots, but fall out of dead stuff nicely where they get consumed by chickens. Earthworms, in fact, are a big vector here for big hookworms. They will kill birds but often they seem to just stop laying for no reasons. We seem to have broken the cycle here successfully although it's taken a couple of years. That's taken 1) Multi generation birds raised here, as they acquire some immunity. Ours don't even get fowl pox now. 2) Diatomaceous earth in the feed, pretty heavy, for at least a season, to insure the earthworm population gets cleared. As well, if you bring birds home from other sites, unless you know for sure that the source has a protocol for control, treat them--prazilquantil or some such-- or your whole flock will get them. Do not make this mistake! You get to start all over clearing the whole site.