age limits for horses

Last year the California Horse Racing Board (CHRB) approved the establishment of maximum statewide ages at which horses can race--10 years old for winners and five years old for maidens. On Wednesday, the CHRB voted unanimously to tweak that rule, raising the max age for maidens to six, with the stipulation that such horses would be receiving "increased scrutiny" from the state's regulatory veterinarians. Prior to the codification of a maximum age for maidens at the state level, California's three currently active tracks had been operating under "house rules" that...