vitamins for my yellow lab

Question

bruno   QUESTION: what is the best vitamins that you can recommend for my yellow lab for him to become big.

ANSWER: If you are feeding any decent food, it should have as much or more vitamins as he needs.  Too much and too rich of a diet only accelerates growth leading to joint problems.  It is better if it takes longer to reach his genetically programed size.  You should be feeding a puppy chow now. Switching to an adult chow for the larger breeds at 4 months, slows growth and helps develop sturdier joints.

Your dog definitely should be narrower at the waist than the hips and chest. You should be able to easily feel the ribs, but not see them. Each dog is different. Standard recommendations are a good place to start, but each dog must have its food and exercise adjusted to its individual needs. Here is a link to a good illustrated guide, http://www.longliveyourdog.com/twoplus/RateYourDog.aspx

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QUESTION: is calcium vitamins best for my yellow lab? does it help him to become big?

ANSWER: Calcium supplements are more likely to cause joint problems than growth.   Commercial dog food already have all the vitamins and minerals dogs need.  Just stick to dog food.  

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QUESTION: in what age do labrador stop growing?

Answer
Smaller ones growth slows around 6 months with larger ones continuing to grow perhaps into the second year.  After the growth slows, it continues for months, but slower and slower.  Check the ends of the leg bones.  If they are still much knobbier than an adult's, the growth plates are still open and it is still growing.  If not, do not expect much more growth.

You may find this link interesting,   http://jn.nutrition.org/cgi/content/full/134/8/2027S