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The sustainability of nutrient transfers in integrated rangeland/cropland systems of the Sahel was examined in relation to the impact of livestock. Rangeland nutrient balances are considered in equilibrium whereas croplands lack the internal capacity to replenish nutrient off takes in grain and c...


Powell, J.M.Fernández Rivera, S.Hiernaux, Pierre H.Y.Turner, M.[Nutrient cycling in integrated rangeland/cropland systems of the Sahel]Nutrient cycling in integrated rangeland/cropland systems of the Sahel

Jenet, A.Yimegnuhal, A.Fernández Rivera, S.Tegegne, AzageOsuji, P.O.McCrabb, G.J.Wettstein, H.R.Kreuzer, M.[Genotype differences in the long-term response to different levels of energy supply of dairy cows kept under tropical conditions]Genotype differences in the long-term response to different levels of energy supply of dairy cows kept under tropical conditions
Jenet, A.Tegegne, AzageOsuji, P.O.Yimegnuhal, A.Kreuzer, M.McCrabb, G.J.Fernández Rivera, S.[Milk performance of lifetime underfed cows of different genotype (Zebu or Zebu x Friesian) in the tropics]Milk performance of lifetime underfed cows of different genotype (Zebu or Zebu x Friesian) in the tropics

The livestock revolution is occurring but it is being preceded by the feed revolution because of the substantial mount of feed required to supply by the increased animal population. However, the opportunities to meet the demand for feed depend on the existing production systems. This paper looks ...


Fernández Rivera, S.Pezo, Danilo A.Devendra, C.[Meeting the demand for livestock feeds in developing countries]Meeting the demand for livestock feeds in developing countries

This paper demonstrates the usefulness and importance of an holistic approach in analysing complex production systems. It determines the optimum stocking rate and species mix that will maximise profit and compare this with the biological optimum stocking rate and species mix and; the effects of o...


Williams, Timothy O.Fernández Rivera, S.[Economic Analysis of mixed grazing by sheep and goats in a semi-arid environment]Economic Analysis of mixed grazing by sheep and goats in a semi-arid environment

Mixed farming systems, combining crop and livestock activities, hold considerable promise for improved agricultural productivity and environmental conservation in semi-arid West Africa. Increasing population pressure and climatic changes have combined to render long-fallow periods less feasible a...


Williams, Timothy O.Hiernaux, Pierre H.Y.Fernández Rivera, S.Turner, M.[Livestock production and sustainable agricultural Development in semi-arid West Africa]Livestock production and sustainable agricultural Development in semi-arid West Africa

Night corralling of livestock directly in crop fields during the dry season contributes to nutrient cycling for the benefit of crops. Rangeland grazing and corralling livestock on selected croplands result in a spatial transfer of organic matter and nutrients from rangelands to the corralling sit...


Hiernaux, Pierre H.Y.Fernández Rivera, S.Schlecht, E.Turner, M.Williams, Timothy O.[Livestock-mediated nutrient transfers in Sahelian agro-ecosystems]Livestock-mediated nutrient transfers in Sahelian agro-ecosystems

Increasing dairy production to meet the growing demand for milk in developing countries presents several technical and environmental challenges. Supplying the feed resources required and improving the efficiency of their conversion into a highly nutritive food and valued market commodity is one o...


Fernández Rivera, S.Vuuren, A.M. vanOkike, I.Ehui, Simeon K.Tegegne, Azage[Milk production and feed requirements in dairy systems of developing countries by 2010]Milk production and feed requirements in dairy systems of developing countries by 2010

Cowpea is important for the provision of both grain for food and fodder for livestock but there is often a trade-off between production of the two. To better understand influences on grain and fodder production, and how these may be utilized. Research was conducted at 5 locations in West Africa u...


Tarawali, Shirley A.Singh, B.B.Fernández Rivera, S.Peters, MichaelSmith, Jimmy W.Schultze-Kraft, RainerAjeigbe, Hakeem A.[Optimizing the contribution of cowpea to food and fodder production in crop-livestock systems in West Africa]Optimizing the contribution of cowpea to food and fodder production in crop-livestock systems in West Africa
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

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