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Nutrient concentrations and ruminal degradability of the crude protein (CP) of selected browse forages consumed by goats in east–central Namibia were studied. All forages varied signifi cantly (P<0.05) in the parameters studied. Crude protein (mean 17.9±0.64% DM) ranged from 11.6 to 26.2% in Terminalia sericea and Acacia refi ciens leaves, respectively. Total condensed tannins (TCTs) were low and ranged between 0.39 and 4.21% DM. Neutral detergent fi bre (NDF), with a mean value of 41.5±0.84% DM, was lowest (30.9%) and highest (58.3%) in the parasitic plant Tapinanthus oleifolius growing on Acacia mellifera and Lonchocarpus nelsii leaves, respectively. The same forages had, similarly, the lowest (22.5% DM) and highest (38.7% DM) acid detergent fi bre (ADF) values. Acacia hebeclada leaves had the least (6.31% CP) soluble (a) feed protein (mean 9.11± 0.36% CP), while A. refi ciens had the most (13.5% CP) soluble feed protein. The potentially degradable fraction (b) of the feed protein ranged between 72.1 and 83.6% CP. Leaves from A. hebeclada had the highest rumen undegradable protein (rUDP) content (mean 6.75±0.23% DM) of 9.69%, while those of T. sericea had the lowest value (4.07%) for the same parameter. Terminalia sericea had also the lowest (7.31% DM) effective rumen degradable protein (ERDP), which was highest (17.8% DM) in A. refi ciens leaves. Generally, the most preferred forages had high CP, rUDP and ERDP contents and low tannin levels, while the parasitic plants were low in fi bres and, correspondingly, high in total digestible nutrients (TDN). It was concluded that the browse forages in the study area have low tannin levels and the necessary quality to promote goat productivity even under in-door feeding conditions.

Crude protein degradability, fibre and tannin levels of browse forages in an extensive farming system