Supplements for IGP dogs during pre-trial and trial season

I am often asked what I feed my dogs and what I do to keep my dog in such a great shape. During pre-trial and trial season he glows and shows off his shiny coat and muscle definition. The truth is, a lot of it is genetics, and a lot is exercise along with raw diet 90 percent of the time and the appropriate supplements according to his needs which of course vary at different times. He doesn't look this way all year around, we don't train the same and nor do I supplement the same during our "off" and "maintenance" periods.