If entered for the first time at a meeting, a horse shall be identified by stating his name, color, sex and age, and the name of his sire and dam, as registered. This description shall be repeated at each entry until the name and descriptions of the horse have been published in the official program or the list of entries of an association. In every entry after that, the name, age and sex of a horse shall be sufficient.
58 Pa. Code § 163.99