We compared digestibility by testing five different proportions of two low-nourishing species: King Grass (Pennisetum hybridum) and the shrub known as “Resuscitado” (Malvaviscus arboreus Cav.). We fed those to 15 African male sheep, of approximately 20 kg and one year old. We determined the digestibility of the forages in five treatments through Anova analysis and a comparisonof the entire digestible nutrients (NDT) with Duncan’s multiple range test. P. hybridum was the forage with better digestibility and the treatments with diverse portions of two forages including this species. Ithas agreater bioavailability of the main nutrients and the highest percentage of total digestible nutrients present in this grass. Our results are usefulto make decisions about whether or not to cultivate these forage speices to use them as food for ruminants.