When a trainer is to be absent from his stable or the grounds where his horses are racing for a period of more than 2 racing days and horses are entered or are to be entered, he shall provide a licensed trainer to assume the complete responsibility of the horses he is entering or running. The licensed trainer shall sign in the presence of the stewards a form furnished by the Commission accepting complete responsibility for the horses being entered and running. This section does not apply to trainers having in their employ a licensed assistant trainer. A trainer shall register with the racing secretary the horses in his charge, giving the name, age, sex, color, breeding and ownership of each, and he shall present the foal certificates at the time the horses arrive on the grounds. Spaying as used in this section includes any procedure including removal of ovaries rendering an animal incapable of reproduction.
Gelding includes any procedure having the effect of castration.
The horse is not permitted to race on Commonwealth tracks. The assistant trainer shall be licensed before acting in the capacity on behalf of his employer. Qualifications for obtaining an assistant trainer's license shall be prescribed by the Commission. A licensed assistant trainer shall assume the same duties and responsibilities as imposed on the holder of a trainer's license. The licensed trainer shall be jointly responsible with his assistant trainer for all acts and omissions of the assistant trainer involving a racing matter.