
I like to give pups a variety - to a degree :) IMO it helps their systems cope with various food types which they may well be exposed to in their formative months when they go to their new homes. My pups and those I've brought in have had scraped raw meat and chicken wings for example starting at around 4 weeks. They're basic diet is still mum of course and they get a quality puppy kibble served soggy like porridge for a week or so before moving onto it being dry. They have fresh water available at all times as soon as the weaning process begins.
IME dogs fed only on, for eg, a rice & chicken complete can get upset tums if moved onto a rice & lamb one for example - even within the same brand. Likewise, differing brands offering what appears to be the same ingredients can never the less upset tummies. Unfortunately try as we might many new owners don't wish to continue with the feeding regime the breeder has started out on - it may be for practical or financial purposes - and so IME it is better that they have variety, although not an onslaught of all sorts, just a little :)
Monitor carefully what they eat, how it comes out the other end and how well they are thriving - whichever route you decide to go it is important that the puppies are getting everything that they need
HTH, Teri :)