Final answer:
The major advantage of a paddock and shelter for horses is that it allows them more freedom to move, engage in natural behaviors, and regulate their exposure to weather, which can improve their physical and mental well-being.
Step-by-step explanation:
The major advantage of providing a paddock and shelter for horses, instead of a traditional stall, is that it allows for more natural and healthier living conditions. Horses are able to move around freely, which is essential for maintaining good musculoskeletal health. Furthermore, they can engage in natural behaviors such as social interaction and foraging, which can reduce stress and promote overall well-being.
Moreover, horses kept in a paddock with a shelter often have access to better ventilation and can choose when they want to seek cover. This is especially beneficial during different weather conditions. For instance, on cold, clear nights, horses will sleep under the cover of large trees or shelters, which helps to trap heat and shield them from the cold, much like Pennsylvania's forebay barns with the overhangs providing shelter to the livestock below. In contrast to this, a stall limits the horse's mobility and ability to regulate its temperature and exposure to the elements, which can lead to health issues.