Pastoral Systems Research in Sub-Saharan Africa: Proceedings of the IDRC/ILCA Workshop Held at ILCA, Addis Ababa, Ethiopia, 21 to 24 March 1983 |
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activities Africa analysis animals approach areas assessing base bétail cattle changes CIPEA collection constraints costs critical dans les data collection déclaré demand depend determine Discussion distribution données effect enumerators estimates être example expenditure farmers feed field given goats grazing herd households identified ILCA important improvements income increase indicate initial inputs interventions Kenya labour land livestock market major Mali mean mesure methods milk months necessary Niger observations obtained organisation particular pastoral systems pastoralists pastoraux period phase population possible presented problems production programme qu'il question range recall recherche recorded sample season selected shows social Source specific strategies supply sur les survey systems research Table task technique testing transactions units visits wealth zone

