Deer herd production is evolving into a substantial animal agriculture market. As commercial deer production practices evolve, the nutritional program must continue to develop as well. The nutritional program for commercial deer herds targets bigger and better bucks, in both body size and antler size and quality. Knowledge of deer feeding activities and nutritional needs combined with the technical expertise in feed manufacturing is crucial to development of nutritional supplements that will yield big bucks on the range and for the producer's bottom line.