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Growing pearl millet and cowpea in combination with raising ruminant livestock is widely practiced in the Sahel. In this farming system, livestock feeding depends mostly on rangeland, fallows and cropland grazing. Nutritional constraints to grazing ruminants stem primarily from feed scarcity and ...


Fernández Rivera, S.Hiernaux, Pierre H.Y.Williams, Timothy O.Turner, M.Schlecht, E.Salla, A.Ayantunde, Augustine A.Sangare, M.[Nutritional constraints to grazing ruminants in the millet-cowpea- livestock farming system of the Sahel]Nutritional constraints to grazing ruminants in the millet-cowpea- livestock farming system of the Sahel
Powell, J.M.Fernández Rivera, S.Williams, Timothy O.[Research for improving cereal-based livestock systems in semi-arid sub-Saharan Africa]Research for improving cereal-based livestock systems in semi-arid sub-Saharan Africa

Three papers are reviewed in this paper. The first paper presents a model of biological processes to investigate long-term effects of soil and crop long-erm effects of soil and crop management strategies while the other two papers present approaches to study crop production strategies at the ente...


Fernández Rivera, S.Hiernaux, Pierre H.Y.Kaufmann, Ralph R. vonTurner, M.Williams, Timothy O.[Response to case studies of eco-regional approaches at the farm/enterprise level]Response to case studies of eco-regional approaches at the farm/enterprise level

This chapter investigates the options for improving the performance of small ruminants interms of their contribution to household incomes. The characteristics of the existing production system are first sketched in order to identify the resource requirements and constraints of the system. Based o...


Williams, Timothy O.[Scope for improvement of small ruminant production in the Sahel]Scope for improvement of small ruminant production in the Sahel

This paper outlines the role of livestock in integrated nutrient management in semi-arid west Africa. Farmers' strategies in the use of animal manure as well as research efforts to better understand the process of nutrient cycling through livestock in mixed farming systems are described. It con...


Williams, Timothy O.Hiernaux, Pierre H.Y.Fernández Rivera, S.[The role of livestock in integrated nutrient management in semi-arid West Africa]The role of livestock in integrated nutrient management in semi-arid West Africa

In semi-arid sub-Saharan Africa as in many dryland areas, livestock are an integral part of the farming systems. Livestock offer opportunities for risk coping, farm diversification and intensification and provide significant livelihood benefits to the poor. The ability of livestock systems to con...


Williams, Timothy O.Thornton, Philip K.Fernández Rivera, S.[Trends and prospects for livestock systems in the semi-arid tropics of sub-Saharan Africa]Trends and prospects for livestock systems in the semi-arid tropics of sub-Saharan Africa

In this document ILCA proposes a set of six researchable issues pertaining to ILCA's three research areas that need to be investigated (three broad themes). A brief description of the researchable issues is presented. This includes economic and policy measures to improve the management of natural...


Fernández Rivera, S.Hiernaux, Pierre H.Y.Turner, M.Williams, Timothy O.[Ecological and economic linkages between the arid and semi-arid zones: The role of livestock]Ecological and economic linkages between the arid and semi-arid zones: The role of livestock

A classification of the major ruminant livestock production systems in West Africa is proposed. The proposed typology has two major classes of systems-sole livestock and crop-livestock. The sole livestock class has two systems (rangeland-based and landless) and the crop-livestock class has three ...


Fernández Rivera, S.Okike, I.Manyong, Victor M.Williams, Timothy O.Kruska, R.L.Tarawali, Shirley A.[Classification and description of the major farming systems incorporating ruminant livestock in West Africa]Classification and description of the major farming systems incorporating ruminant livestock in West Africa

This paper considers the comparative advantage and policy incentives for maize-small ruminant production systems in southwestern Nigeria, using the resource-cost ratio (RCR) approach to analyze the competitiveness and real cost to Nigeria of alternative maize-small ruminant production enterprises...


Williams, Timothy O.[Comparative advantage of crop-livestock production systems in southwestern Nigeria and its technical research implications]Comparative advantage of crop-livestock production systems in southwestern Nigeria and its technical research implications

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