Elderly rabbits, during the last stages of their life, often have low appetites. It is more important at this stage to offer foods that they enjoy. A healthy animal, that does not have urinary problems, can occasionally partake in an alfalfa treat. Like all treats, they are to be given infrequently and in small amounts. Using alfalfa once a week is appropriate.
Many people think oat hay and automatically dismiss it as a hay choice, due to the single word, oat.
It is true that eating too many oats can cause an imbalance of micro flora to grow in the animals cecum. But that is only true in pure oats, not Oat hay. The stage of maturity that oat hay is harvested determines the development of the seed heed. If the hay is harvested immaturely, at the early bloom stage, the actual oat kernel does not mature. The seed heads only contain the oat husks, which are all fiber.