Leaves of 10 different plant species utilized by the kudu were collected, dried and ground. This material was used to determine DM digestibility, gas production and VFA production during in vitro fermentation with rumen fluid obtained from kudu. Plants preferred by the kudu had a higher IVDMD and VFA energy yield than those not eaten so readily. Peltophorum africanum produced less VFA energy than the control, probably due to inhibition of fermentation by phenolic compounds.