If you are using a mineral with lots of protein you can certainly help to supplement a deers diet.

To understand antler development a little better you may want to read this article.
http://www.whitetailinstitute.com/in...s/mar04/8.html

Protein is the key to antler development. It dosen't matter much how the deer ingest it but they need lots of it (18% or more) to reach their full potential.

And were are my manners? Welcome