hi all, can please suggest me what kind of food should I feed to a 6 month rotty pup? should I feed high protein dog food like most ppl suggest? or is there any specific brand that is rly good to ensure healthy growth of puppy?

Previously I fed my sis's Labrador puppy with home cooked (chicken breast + small portion of rice) and it grown up fine, then I start feeding him the dog food my sis bought (solid gold as I recall).