
This is an interesting topic. When I rear my pups they get a mixture of several complete brands, so that the owners can choose what to continue with once the supply they go home with runs out. I also feed one meal a day of meat and tripe, so that if new owners interested in a more traditional or Barf diet the pups will already have a clue about Real food.
If pups already have a varied diet then they are less trouble to change over to a new regime, and do not get bad tummies when this happens.