Chemical composition, in vitro ruminal dry matter degradability and dry matter intake of some selected browse plants

Abstract

Many browse plants are undervalued due to insufficient knowledge about their potential feeding value. The study was conducted to evaluate the chemical composition, in vitro ruminal dry matter degradability (DRD) and dry matter intake of Melia azedarach, Leucaena leucocephala, Searsia lancea, Moringa oleifera and Acacia hebeclada. Matured leaves were collected and dried at room temperature and then analyzed in a completely randomized design. Chemical composition, ruminal dry matter degradability and dry matter intake were determined and estimated, respectively. The crude protein (CP) content ranged from 108.0 to 258.3 g/kg DM and neutral detergent fiber from 306.1 to 492.7 g/kg DM. In vitro dry matter degradability at all incubation periods for M. oleifera was significantly higher than those of other browse plants. There was a negative correlation between metabolizable energy and fiber content and a positive correlation to crude protein content. All browse species had CP values of above 10% which is above the minimum required in diet for adequate digestive activities. M. oleifera, L. leucocephala and M. azedarach leaves had the highest metabolizable energy, dry matter intake, total digestible nutrients, relative feed value and dry matter degradability compared to other browse plants. The results from the study suggest that M. oleifera, M. azedarach and L. leucocephala can be recommended to be used as a supplement during dry season and in case of low-quality forage feeding.