Most parts of cadaba (leaves, flowers and fruits) are readily eaten by all classes of livestock at the exception of horses and donkeys (Orwa et al., 2009). Camels are particularly adapted to browse cadaba as they are taller than other livestock, and they are particularly fond of this plant. Wild ruminants and herbivores such as buffaloes, hartebeests, and black rhinos also relish on cadaba (Orwa et al., 2009). Leaves and young branches of this shrub are used in Ethiopia, Kenya or Tanzania as forage for local ruminants, particularly goats and camels, this utilization being particularly important during the dry season (Dougall et al., 1958; Komwihangilo et al., 1995; Kuria et al., 2005; Yayneshet et al., 2009; Mengistu et al., 2016).
Digestibility and metabolizable energy
In Northern Ethiopia, in vitro DM digestibility of cadaba was 83% with a high estimated metabolizable energy (11.5 MJ/kg) (Yayneshet et al., 2009). These results were in accordance with values obtained earlier in semi-arid areas of Tanzania where in vitro DM digestibility was reported to be 78%.
Cattle
Since the 1950s it has been reported that Fulani herdsmen of the western Sahel prize cadaba leaves for the nutritive value they provide for their cattle during the dry season, especially the minerals and trace elements (Le Houérou, 1980; Dougall et al., 1958). In Uganda, cadaba is one of the most important browse species, and well known by pastoralists of the Karamoja-Sub-region where it holds potential for the improvement of livestock production (Egeru et al., 2015).
Goats
Goats were reported to browse cadaba on every season (wet or dry). After fallows of 8 to 12 years, cadaba was in the top browsed species by goats and among the most browsed woody species (Acacia etbaica, Balanites aegyptica, Capparis tomentosa, Dichrostachys cinerea, and Ocimum forskolei). Goats spent more time on cadaba, browsed taller plants and had a higher bite rate on this species, thus suggesting its good nutritive value (Yayneshet et al., 2008). However, cadaba was less relished than certain tanniniferous woody species (Balanites aegyptiaca, Dichrostachys cinerea, Rhus natalensis) (Mengistu et al., 2016). Cattle and goats eat the leaves and young branches throughout the year, although not excessively. During the dry season it is often the only source of green palatable roughage (Göhl, 1982).