I have been using broodies to hatch and brood the birds. My observations lead me to believe that while this is not good for getting a lot of birds out, it is excellent for everything else. The obvious is that it is a lot less work, but the not so obvious is that the young develop a high degree of disease resistance and for some reason just seem to develop into superior birds in just about every way.
Walt
They are raised as chickens. They get exposed to everything from the start so their bodies can adjust. They get a truly balanced diet, not just the "required" nutrients from the feed but stuff from the dirt and dead vegetation, all those creepy crawlies, and everything else they eat. They also get a lot of exercise. I like my broodies and I like them raising the chicks with the flock.