Once a Beveren Rabbit reaches full maturity, typically around twelve months of age, its dietary needs shift from growth-oriented to maintenance-focused. The foundation of the adult diet remains unlimited grass hay, which should constitute approximately 80 percent of the rabbit's daily intake by volume. Timothy hay is the most commonly recommended variety for adult rabbits, though orchard grass, meadow hay, and botanical hay blends are all suitable alternatives that add variety and encourage consistent consumption. The high fiber content of hay is essential for maintaining healthy gastrointestinal motility and for wearing down the continuously growing teeth.
Pellet portions should be reduced from the more generous juvenile allotment to a measured daily amount appropriate for a large adult rabbit. A general guideline for a mature Beveren is approximately one-quarter cup of plain, high-fiber pellets per day, though this may be adjusted based on the individual rabbit's weight, activity level, and body condition. Overfeeding pellets is one of the most common nutritional errors in adult rabbit care and can lead to obesity, which places dangerous stress on a large breed's joints, heart, and digestive system. Choose a pellet with at least 18 percent crude fiber and no added sugars, seeds, or colorful fillers.
Fresh vegetables should make up a meaningful portion of the adult Beveren's daily diet, providing vitamins, minerals, and hydration that hay and pellets alone may not fully supply. Offer a rotating selection of leafy greens such as romaine lettuce, cilantro, parsley, basil, and dandelion greens, aiming for approximately one packed cup of greens per two pounds of body weight per day. Introduce any new vegetable slowly and monitor the rabbit's droppings for signs of digestive sensitivity. High-sugar fruits should be offered only as occasional treats in very small quantities.
Fresh water is a non-negotiable daily provision, and adult Beverens drink a substantial amount due to their size. A heavy ceramic crock is often preferred over a bottle for large breeds, as the crock allows the rabbit to drink in a more natural posture and delivers water at a faster rate. Clean and refill the water source every day, and check the supply twice daily during warm weather when consumption increases. Dehydration can trigger or worsen gastrointestinal stasis, one of the most common and dangerous health emergencies in rabbits.