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Fernández Rivera, S.Jaimes, J.M.E.Muñoz, D.J.J.Ortega, M.L.Nunez, D.R.[Heterosis y efectos geneticos individuales y maternos en bovinos Angus Pardo. I. Ganancia de peso y, consumo y eficiencia de utilizacion. (Heterosis and individual and maternal genetic effects in Angus and Brown Swiss cattle. I. Daily gain, intake and feed efficiency with high roughage diets)]Heterosis y efectos geneticos individuales y maternos en bovinos Angus Pardo. I. Ganancia de peso y, consumo y eficiencia de utilizacion. (Heterosis and individual and maternal genetic effects in Angus and Brown Swiss cattle. I. Daily gain, intake and feed efficiency with high roughage diets)

Many organizations in Ethiopia have for many years promoted exotic multipurpose fodder trees (EMPFT) for livestock feed and soil improvement. Despite the apparent benefits, the number of farmers planting these trees was low. The objectives were to elucidate farmers’ perceptions about their use va...


Mekoya, A.Oosting, Simon J.Fernández Rivera, S.Zijpp, A.J. van der[Farmers’ perceptions about exotic multipurpose fodder trees and constraints to their adoption]Farmers’ perceptions about exotic multipurpose fodder trees and constraints to their adoption

Feed and grazing management affect both the quantity and quality of animal manure and consequently nutrient cycling in the mixed crop-livestock systems in West Africa Sahel. Dietary measures can significantly influence the composition of manure and hence it’s agricultural value. High nutrient fee...


Ayantunde, Augustine A.Hiernaux, Pierre H.Y.Fernández Rivera, S.Sangare, M.[Nutrient management in livestock systems in West Africa Sahel with emphasis on feed and grazing management]Nutrient management in livestock systems in West Africa Sahel with emphasis on feed and grazing management

Animal manure is of vital importance to soil-fertility maintenance in semi-arid West Africa due to its intrinsic value as a soil amendment and because of the low level of inorganic fertiliser use. This paper provides a regional overview of manure utilisation for food crop production. Results of e...


Williams, Timothy O.Powell, J.M.Fernández Rivera, S.[Manure utilisation, drought cycles and herd dynamics in the Sahel: implications for cropland productivity]Manure utilisation, drought cycles and herd dynamics in the Sahel: implications for cropland productivity

Mixed farming systems in semi-arid West Africa rely on recycling organically bound nutrients to maintain soil productivity. The passage of plant biomass through ruminant livestock plays a major role in the nutrient cycles of this region. The feeding value of crop residues and browses and their im...


Somda, Z.C.Powell, J.M.Fernández Rivera, S.Reed, J.D.[Feed factors affecting nutrient excretion by ruminants and the fate of nutrients when applied to soil]Feed factors affecting nutrient excretion by ruminants and the fate of nutrients when applied to soil

This paper synthesizes the key findings presented in the previous 15 papers, and presents a summary of a discussion on best approaches, strategies and partnerships to improve the utilization of food–feed crops. The synthesis provides guidance for future research and development in crop–livestock ...


Lenne, J.M.Fernández Rivera, S.Blümmel, Michael[Approaches to improve the utilization of food-feed crops—synthesis]Approaches to improve the utilization of food-feed crops—synthesis

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