Did you know that hay should be the bulk of your Rabbits diet? Oaten hay is vet recommended as a great high fibre supplement for all rabbits, that helps maintain rabbit digestive health. Oaten Hay should be given in addition to nutrient-dense foods like rabbit mix and pellets. Hay, in general, is an important part of a rabbit’s diet and should ideally make up about 70% of their food intake. Hay also encourages chewing for long periods, which helps to keep teeth clean and healthy. Oaten hay is an annual grass cereal that is used as a prime source of digestible fibre for livestock. Specific considerations for oaten hay Oaten hay requires significant amounts of all major nutrients, nitrogen, phosphorus, potassium and sulphur. It also uses high amounts of calcium, copper, zinc, and boron.