Horses shall be provided either:
I. An adequately ventilated, dry barn with stalls of sufficient size so that the horse is able to lie down, and shall be provided adequate and suitable exercise in arenas, barn yards, paddocks or pastures; or
II. A roofed shelter, with at least 3 sides from November 1 through April 15, shall be provided for horses kept in paddocks or pastures, and said horses shall not be kept tied but shall be able to move around freely.