20 years of more in depth research has prompted the pet food industry, spefically those companies like Hills and Purina who conduct their own original research, to make large breed puppies foods specifically designed to have appropriate calcium and phos ratios and calcium to calorie ratios. No one who has kept up with current research recommends feeding an adult maintenance diet to a growing large breed anymore. That was common 30-40 years ago when these diets didn’t exist.
I personally can not justify paying 60$ for any size bag of food unless it is a vet diet I need to use temporarily.
