SHORT COMMUNICATION
Crude protein degradability, fibre and tannin levels of browse forages in an extensive farming system
 
More details
Hide details
1
Department of Animal Science, University of Namibia, Private Bag 13301, Namibia
 
2
Department of Animal Science and Production, Sokoine University of Agriculture, P.O. Box 3004, Morogoro, Tanzania
 
 
Publication date: 2004-08-30
 
 
Corresponding author
G. T. Kamupingene   

Department of Animal Science, University of Namibia, Private Bag 13301, Namibia
 
 
J. Anim. Feed Sci. 2004;13(Suppl. 1):111-114
 
KEYWORDS
ABSTRACT
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 significantly (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 reficiens leaves, respectively. Total condensed tannins (TCTs) were low and ranged between 0.39 and 4.21% DM. Neutral detergent fibre (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 fibre (ADF) values. Acacia hebeclada leaves had the least (6.31% CP) soluble (a) feed protein (mean 9.11 ± 0.36% CP), while A. reficiens 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. reficiens leaves. Generally, the most preferred forages had high CP, rUDP and ERDP contents and low tannin levels, while the parasitic plants were low in fibres 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.
 
CITATIONS (3):
1.
The Ecology of Browsing and Grazing
Kate R. Searle, Lisa A. Shipley
 
2.
Significance of Plant Nutrients and Secondary Metabolites to the Livestock Feeding Selectivity
Wataru Shoji
Journal of African Studies
 
3.
Towards Sustainable Food Production in Africa
Johnfisher Mupangwa, Emmanuel Lutaaya, Maria Shipandeni, Absalom Kahumba, Vonai Charamba, Katrina Shiningavamwe
 
ISSN:1230-1388
Journals System - logo
Scroll to top