"No . . . slaughtering shall be deemed to comply . . . unless it is humane. . . : (a) . . .all animals are rendered insensible to pain by a single blow or gunshot or an electrical, chemical or other means that is rapid and effective, before being shackled, hoisted, thrown, cast, or cut;???The brain of an equine is further back in the skull compared to a bovine." . . . .