The foundation of the American Blue Rabbit's diet is high-quality hay, which should comprise approximately eighty percent of daily intake. Timothy hay stands as the most widely recommended variety for adult American Blues because of its ideal balance of fiber, protein, and calcium. The long-strand fiber in timothy hay promotes healthy gut motility, which is critical for this breed given their solid, muscular body type and the metabolic demands that come with maintaining a frame that typically ranges between nine and twelve pounds. Selecting hay that is green, fragrant, and free of excessive dust or mold ensures the rabbit receives maximum nutritional benefit while minimizing respiratory irritation.
Orchard grass hay serves as an excellent alternative or complement to timothy hay, offering a slightly softer texture that some American Blues prefer. Its lower calcium content compared to alfalfa makes it appropriate for adult rabbits that have already completed their growth phase. Blending orchard grass with timothy hay can encourage pickier eaters to consume adequate fiber, and the variety in texture and flavor helps stimulate natural foraging behavior. Botanical hay blends that incorporate dried herbs such as chamomile, dandelion leaf, or plantain can add further sensory enrichment without significantly altering the nutritional profile.
Alfalfa hay occupies a specific and limited role in the American Blue's diet. Because of its high protein and calcium content, alfalfa is best reserved for growing kits under six months of age, pregnant or nursing does, and rabbits recovering from illness or surgery that require additional caloric support. Feeding alfalfa to healthy adult American Blues on a long-term basis risks contributing to obesity and urinary sludge due to excess calcium. The transition from alfalfa to timothy hay should be gradual, mixing increasing proportions of timothy over two to three weeks as the young rabbit reaches maturity.
When evaluating hay products, look for brands that provide clear harvest date information and store their product in breathable packaging to prevent moisture buildup. Compressed hay bales sold in pet stores can sometimes contain older cuttings with higher stem-to-leaf ratios, which reduces palatability. Buying from farm-direct suppliers or specialty rabbit hay companies often yields fresher, leafier cuttings. For the American Blue specifically, first or second cutting timothy hay is ideal, as first cutting provides coarser stems for dental wear while second cutting offers a leafier, more palatable product that encourages higher consumption.