Oh, now I see what you were asking. Sorry.
I remember my neighbor having problems with vitamin deficiency with her chickens when they ate the turkey (game) feed. They had problems with their legs curling under them.
My ducks eat the chicken feed (non-medicated!). Don't ever let the ducks have the medicated chicken/chick feed- very, very bad I was told.
My current ducks and chickens are the roughly the same age (laying age), so I give them the chicken layer feed (Dumor).
I am so totally not an expert, and still new to this all myself, but as long as it is not wild game feed, and not medicated, it should be fine.
Hope that helps.