1. Alli-Balogun, J.K., Lakpini, C.A.M., Alawa, J.P., Mohammed, A. and Nwanta, J.A., 2003. Evaluation of cassava foliage as a protein supplement for sheep. Nigerian Journal of Animal Production, 30, 37–46.
2. Ayantunde, A.A., Hiernaux, P., Fernández-Rivera, S., van Keulen, H. and Udo, H.M.J., 1999. Selective grazing by cattle on spatially and seasonally heterogeneous rangeland in Sahel. Journal of Arid Environments, 42, 261–279.
3. Breman, H. and de Wit, C.T., 1983. Rangeland productivity and exploitation in the Sahel. Science, 221, 1341–1347.
4. Dan-Gomma, A., 1998. Influence du type de fourrage et de differents niveaux de supplement en son de mil sur les performances de croissance et a l’abattage des ovins au Niger. (MSc thesis, Institut Agronomique et Veterianaire Hassan II, Rabat).
5. Fernández-Rivera, S., Hiernaux, P., Williams, T.O., Turner, M.D., Schlecht, E., Salla, A., Ayantunde, A.A. and Sangaré, M., 2005. Nutritional constraints to grazing ruminants in the millet-cowpea-livestock farming system of the Sahel. In: A.A. Ayantunde, S. Fernández-Rivera and G. McCrabb (eds), Coping with Feed Scarcity in Smallholder Livestock Systems in Developing Countries, (International Livestock Research Institute (ILRI), Nairobi, Kenya), 157–182.