This study was designed to assess the nutrient digestibility and nitrogen balance of goats fed silage made from mixtures of elephant grass and each of lima bean, pigeon pea and African yam bean plants. Sixteen West African Dwarf goats comprising of four goats per treatment were used for feeding trials which lasted for 82 days in a completely randomized design. Proximate composition of silage made from grass/legume mixtures ranged from 30.8%–31.5% crude protein; 5.9%–6.5% ash; 37.8%–40.2% neutral detergent fiber; metabolizable energy ranged from 11.9 to 13.1 MJ/kg DM; digestible energy was between 14.9 and 16.4 MJ/kg DM while sole grass silage was only high in the fiber fractions. Crude protein digestibility of the goats ranged from 94.6% in African yam bean/grass silage to 96.4% in lima bean/grass silage. The digestibility of the fiber fractions were highest in lima bean/grass silage and was followed by that of pigeon pea/grass silage, the least percent digestibility was observed in goats fed elephant grass silage. Nitrogen absorbed (69.7%) and nitrogen retention (54.8%) were highest in goats fed lima bean/grass silage and were significantly (P < 0.05) different from other treatments. The least nitrogen absorbed and retention percents were lowest in elephant grass silage. It can be concluded that silage made from grass and legume plants enhanced nutrient digestibility, nitrogen absorption and retention. It can be used to mitigate weight loss of animals during the dry season, ensiling of lima bean plant and elephant grass is the best among three legume/grass silages. Sole grass silage should not be fed solely to ruminant livestock as it would lead to poor performance if not supplemented with protein source.