What most people forget about nutrition and feeding for performance is not only the ingredients and what you feed....it is the "timing" of the feed and supplements and the form they are in. Whole foods take longer to digest than liquid foods. Certain supplementation is better given at certain times. (eg. morning-night, before workout-after workout)

Like in Jacks keep..his morning meal is in liquid form...consists of water, vits/mins, electrolytes and oils. easy to digest and assimilate, keeps the dog content for the day, provides added energy for the evening workout (compared to once a day feeding), and because its liquid it digests faster and by the afternoon the dog will piss out!