Voluntary intake and livestock productivity in different ecological zones of Africa

Describes methods used to determine the voluntary intake, grazing behaviour & productivity of livestock in sedentary or semi-transhumant grazing systems of the Malian Sahel, defining relations between intake & some environmental factors, & relating some of the results obtained to other ecological zones in Tropical Africa; with particular reference to weight changes of cattle & their relation to intake, forage availability & implications of the value of protein content for animal production improvement.