The short answer
Yes, emphatically. The Arabian is one of the easiest keepers among light horse breeds, an animal refined over centuries to survive and work on forage that would leave most breeds ribby. The large majority of Arabians hold excellent condition on good pasture or hay with little or no grain, and they do it while staying bright, energetic and ready to work. Owning one means unlearning the feeding habits that suit bigger, harder-keeping horses.
Desert engineering
The Arabian was shaped on the Arabian Peninsula, where grazing was sparse, water precious and a horse's survival depended on extracting everything possible from poor forage. That history left the breed with an efficient metabolism and a compact gut that gets full value from fibrous feed. It also left them small by modern standards, most standing fourteen to fifteen hands, so their total forage requirement is modest twice over: less body to maintain, and a body that maintains itself efficiently. Endurance riders prize exactly this combination, a horse who can work for hours and recover on hay and water.
Feeding an Arabian day to day
Build the ration from forage and let everything else justify its place. Quality hay or pasture forms the base; a small concentrate feed earns its bucket mainly for horses in hard work, growing youngsters or mares feeding foals, and many pleasure Arabians need nothing more than forage plus a mineral source and constant clean water. Introduce any change slowly, over a week or more, because an efficient gut is still a horse's gut and dislikes surprises. Judge the ration by results: a healthy Arabian should feel smooth over the ribs with a neck that stays clean and crested only lightly, never hard.
The overfeeding trap
The characteristic Arabian feeding failure is kindness. Rich pasture, ad-lib premium hay and a generous grain scoop, offered to a horse designed for scarcity, produce a round, cresty animal carrying weight he does not need, and Arabians gain that weight faster than their owners notice because they stay glossy and cheerful while it happens. Weigh his condition with your hands every week rather than trusting your eyes, cut forage quantity before cutting its quality when he gets heavy, and remember that a slightly lean endurance-fit Arabian is far healthier than a show-ring-fat one. If he lives on lush grazing, limited turnout hours or a grazing muzzle may be part of his normal summer routine.
Long lives, long feeding records
Arabians are famously long-lived, commonly staying active well into their twenties, which means feeding decisions compound over decades and the horse in front of you at twenty-five is the product of the ration you chose at ten. Keep notes on what he eats, how his condition responds to each season's grass and hay, and who is responsible for checking him. KinsLe's Care Teams turns that into a simple system, with feeding duties, weekly condition checks and forage changes assigned to named people and timestamped when done, so his record stays complete across the whole of his long life.