I am currently raising 10DC, 6WR,3 Red Rangers 4Production reds and 8 CX( I also have an older flock of RIRs with a barred rock and a couple of cochin bantys thrown in) all living together and Ive only had 1 problem with a trampling incident,and that was their first nite out of the brooder and havent had any more problems like that. but what I do is fill the feeder and when the meaties come a running and crowed the feeder i sprinkle food around on the ground and it realy incourages the chicks to forage so what meaties who forage with the others are working for it after they eat out of the feeder,and what is left in the feeder gets knocked out over the course of the day .It all seems to work out fine and the meaties only get fed every 12 hrs...unless the want to work for it and go scratch it up