Broodin ducks, chickens and turkeys together?

I have read that you are not supposed to put chickens and turkeys together when they are adults. Is it ok to do so when they are younger. I have done ducks and chickens together before with no ill effects. I have heard that it is better to do that so the chickens can teach the ducks what to do. I have turkeys, chickens and ducks all hatching at the same time and would like to know if I need to set up another brooder. I use big totes with pine in the bottom and a heat lamp with a regular bulb in it. It keeps the tote at 100 under the light.

In the Murray McMurray catalog there's a warning about raising chickens with turkeys. It's because of Blackhead a single celled organism that has the potential to damage the livers of turkeys and gamebirds. The Cecal worm a parasite commonly found in chickens acts as an intermediate host Blackhead organism. Raising chickens away from turkeys and gamebirds is a good preventative measure in controlling Blackhead. (Copied from McMurray Hatchery Catalog)

Hope this helps.

Thank you. I will set up another tote for the turkeys just to be safe.