规定了装载/卸载坡道和强制围栏的要求，以使人员能够安全地从用于运输牲畜的车辆上装载和卸载牲畜，并确保牲畜的福利和牲畜处理人员的安全。

Sets out requirements for loading/unloading ramps and forcing pens to enable persons to safely load and unload livestock from vehicles used to transport them, and ensure the welfare of livestock and the safety of livestock handlers.