Kangaroos and Wallabies need a balanced diet designed for large foregut fermenting marsupials and one which accounts for the lower energy requirements of animals restricted to a home range.
In the wild Kangaroos and wallabies will graze a wide variety of native grasses, the young shoots and foliage of trees and shrubs including eucalypts, and mosses. This varied diet ensures that they meet all their macronutrient and micronutrient requirements.
Because captive kangaroos have a restricted home range, it is important that the energy levels in their diet are reduced to maintain a healthy BMI. Captive kangaroos and wallabies are also susceptible to vitamin E and selenium deficiency diseases so these need to be supplemented in the captive diet as well. As animals are under more stress due to their captivity their general antioxidant requirements are also increased.