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Crop–Livestock Interactions in the West African Drylands

^a U.S. Dairy Forage Res. Cent., USDA-ARS, 1925 Linden Drive West, Madison, WI 53706
^b Cent. for Trop. Veterinary Medicine, Easter Bush, Roslin, Midlothian, EH25 9RG, UK
^c Int. Livestock Res. Inst., B.P. 12404, Niamey, Niger

View larger version (28K): [in a new window]   Fig. 1. The Sudano-Sahelian zone of West Africa. Growing season isolines of 60 to 150 d are shown. (Shivakumar and Wallace, 1991).

View larger version (28K): [in a new window]   Fig. 2. Pathways of crop–livestock integration (Steinfeld, 1998).

View larger version (25K): [in a new window]   Fig. 3. Pathways of nutrient flow in mixed crop–livestock farming systems (Stangel, 1995).