It is nonsense. You can raise chicken on just grass/insects/leftovers. It's pretty much the most carbon neutral animal you can grow. Heck it's probably more car

It is nonsense. You can raise chicken on just grass/insects/leftovers. It's pretty much the most carbon neutral animal you can grow. Heck it's probably more carbon neutral than growing plants as you need fertilizer. It serve as pest control, source of eggs and meat.