I found this summary of nutrition info on vet-md.  Though I agree with some of the recommendation - I think some dogs because of activity and function will need more protein and fat during the growth stage.  

What do you think?

Puppies (up to one year of age)

Protein. . . . . . . . . . . . . . . . . . . . 27 %
Fat . . . . . . . . . . . . . . . . . . . . . . 20 %
Carbohydrate . . . . . . . . . . . . . . .33 %
Crude Fiber . . . . . . . . . . . . . . . . 5%

Below are in mg/100 kcal

Calcium . . . . . . . . . . . . . . . . . . . 1.4
Phosphorus . . . . . . . . . . . . . . . . .1.0
Sodium . . . . . . . . . . . . . . . . . . . .0.5
Potassium . . . . . . . . . . . . . . . . . .0.75
Magnsesium . . . . . . . . . . . . . . . . 0.13

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Adult Dogs (age 1-6 years)

Protein. . . . . . . . . . . . . . . . . . . . 22 %
Fat . . . . . . . . . . . . . . . . . . . . . . 14 %
Carbohydrate . . . . . . . . . . . . . . .45 %
Crude Fiber . . . . . . . . . . . . . . . . 3%

Below are in mg/100 kcal

Calcium . . . . . . . . . . . . . . . . . . . 0.62
Phosphorus . . . . . . . . . . . . . . . . .0.59
Sodium . . . . . . . . . . . . . . . . . . . .0.28
Potassium . . . . . . . . . . . . . . . . . .0.76
Magnsesium . . . . . . . . . . . . . . . . 0.12
Taurine . . . . . . . . . . . . . . . . . . . . 0.13

Below is in ppm
Carnitine . . . . . . . . . . . . . . . . . . . 282

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Mature Dogs (age 7 + years)

Protein. . . . . . . . . . . . . . . . . . . . 18 %
Fat . . . . . . . . . . . . . . . . . . . . . . 14 %
Carbohydrate . . . . . . . . . . . . . . .50 %
Crude Fiber . . . . . . . . . . . . . . . . 5%

Below are in mg/100 kcal

Calcium . . . . . . . . . . . . . . . . . . . 0.62
Phosphorus . . . . . . . . . . . . . . . . .0.52
Sodium . . . . . . . . . . . . . . . . . . . .0.16
Potassium . . . . . . . . . . . . . . . . . .0.76
Magnsesium . . . . . . . . . . . . . . . . 0.1
Taurine . . . . . . . . . . . . . . . . . . . . 0.12

Below is in ppm
Carnitine . . . . . . . . . . . . . . . . . . . 278