Feeding a diet too low in protein or calcium causes weak bones and deformities, even fractures. Rather than trying to calculate specific nutrient levels and balancing the diet yourself, the solution is much easier. Feed one of the top name-brand puppy foods. These companies have done the work for you. Do not automatically supplement with vitamins or minerals, unless your veterinarian instructs you to do so.
Treats are okay, as long as the main diet is the commercial puppy food.
In general, the foods available in super markets and pet shops with familiar brands, from companies that have been around for years are much better than new, unfamiliar brands. He was the largest puppy in the litter. We have been giving him calcium supplements and feeding him a premium puppy food four times a day. He walks on his hocks and doesn't want to run and prefers lying down a lot. Dog was x-rayed, hips and elbows show no sign of dysplasia.