The most important minerals for antler growth are calcium, phosphorous and magnesium.
But digested minerals do not go directly to antler growth. They are deposited on the deer’s skeletal structure. This is particularly important for young deer, whose skeleton is still growing. Only if there is a surplus will minerals be absorbed into and transported by the blood stream and to the antlers. That’s why it’s not until age 4-1/2, when he is fully mature, that a buck really starts maximizing his antler potential.