The law, rules, and orders of the Board supersede the conditions of a race or race meeting and govern thoroughbred, harness, quarter horse, appaloosa, arabian, paint and mule racing. The stewards may enforce rules or conditions set forth by breed registry organizations if such rules or conditions are not inconsistent with the rules of the Board. The breed registry organizations are the Jockey Club for thoroughbred racing, the United States Trotting Association for harness racing, the American Quarter Horse Association for quarter horse racing, the Appaloosa Horse Club for appaloosa racing, the Arabian Horse Registry of America for arabian racing, the American Paint Horse Association for paint racing, and the American Mule Association for mule racing.