Dodson & Horrell Build Up Conditioning MixBuild Up Conditioning Mix is the ideal way to help with weight gain in a controlled, slow release way. Performance level nutrition. High in oil for condition and slow release energy. Added L Lysine to promote muscle condition and top line. Probiotic live Actisaf yeast to promote digestive health and efficiency. Fully fortified equine conditioning feed, complete with a comprehensive blend of vitamins and minerals. Composition Flaked Barley; Oatfeed;