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The selective use by cattle of range resources in the Sahel was assessed in terms of quantity and nutritional quality of the herbage grazed and diet selected. Peak standing crop was 1951 kg ha -1 dry matter (DM) with 47.9 kg nitrogen (N) ha-1 and 7.4 kg phosphorus (P) ha -1. Esophageally fistulat...


Ayantunde, Augustine A.Hiernaux, Pierre H.Y.Fernández Rivera, S.Keulen, H. vanUdo, H.M.J.[Selective grazing by cattle on spatially and seasonally heterogenous rangeland in Sahel]Selective grazing by cattle on spatially and seasonally heterogenous rangeland in Sahel

The effects of 4 years grazing by sheep and goats at various stocking rates on soil surface features, bulk density, organic C, N and P contents and pH were investigated in Sadore, Niger. Studies were also conducted in a fallow subjected to 9 years of intensive grazing. Although grazing reduced (P...


Hiernaux, Pierre H.Y.Bielders, Charles L.Valentin, ChristianBationo, B. AndréFernández Rivera, S.[Effects of livestock grazing on physical and chemical properties of sandy soils in Sahelian rangelands]Effects of livestock grazing on physical and chemical properties of sandy soils in Sahelian rangelands

Many semiarid regions of Sub-Saharan Africa (SSA) are experiencing vast increases in human population pressure and urbanization. These augment the demand for agricultural products and have led to the expansion, intensification, and often closer integration of crop and livestock production systems...


Powell, J.M.Pearson, R.A.Hiernaux, Pierre H.Y.[Crop-livestock interactions in the West African drylands]Crop-livestock interactions in the West African drylands

In agopastoral systems of the semi arid West African Sahel, targeted applications of ruminant manure to the cropland is a widespread practice to maintain soil productivity. However, studies exploring the decomposition and mineralisation processes of manure under farmers' conditions are scarce. Th...


Esse, P.C.Buerkert, AndreasHiernaux, Pierre H.Y.Assa, A.[Decomposition of and nutrient release from ruminant manure on acid sandy soils in the Sahelian zone of Niger, West Africa]Decomposition of and nutrient release from ruminant manure on acid sandy soils in the Sahelian zone of Niger, West Africa

Sample sites of 'brousse tigree' and related vegetation types are described for Mali and Niger. Species composition and physical structure of the herbaceous layer as well as woody plant population were recorded at all sites together with data on soils and natural resource management. Herbage yiel...


Hiernaux, Pierre H.Y.Gerard, Bruno G.[The influence of vegetation pattern on the productivity, diversity and stability of vegetation: The case of 'brousse tigree' in the Sahel]The influence of vegetation pattern on the productivity, diversity and stability of vegetation: The case of 'brousse tigree' in the Sahel

This study documents indigenous knowledge of breeds of cattle, sheep and goats in southwestern Niger, and includes both pastoralists and agropastoralists. Our study included sheep and goats in view of the increasing importance of small ruminants in livestock production systems in the Sahel since ...


Ayantunde, Augustine A.Kango, M.Hiernaux, Pierre H.Y.Udo, H.M.J.Tabo, Ramadjita[Herders' perceptions on ruminant livestock breeds and breeding management in Southwestern Niger]Herders' perceptions on ruminant livestock breeds and breeding management in Southwestern Niger
Jamnadass, Ramni H.Mace, E.S.Hiernaux, Pierre H.Y.Muchugi, A.Hanson, Jean[Population genetic responses of wild forage species to grazing along a rainfall gradient in the Sahel: A study combining phenotypic and molecular analyses]Population genetic responses of wild forage species to grazing along a rainfall gradient in the Sahel: A study combining phenotypic and molecular analyses

A survey was conducted from February to June of 1997 among livestock herders in two villages of Niger, Kodey and Toukounous, on their perceptions, practice, and problems of night grazing. Cattle and sheep were the species that were taken out for night grazing by the herders. Small herd size an...


Ayantunde, Augustine A.Williams, Timothy O.Udo, H.M.J.Fernández Rivera, S.Hiernaux, Pierre H.Y.Keulen, H. van[Herders' perceptions, practice, and problems of night grazing in the Sahel: Case studies from Niger]Herders' perceptions, practice, and problems of night grazing in the Sahel: Case studies from Niger

Sixty-four Azawak male weaned calves were allotted to eight treatments (T) in two trials to study the effect of timing (day or day-and-night) and duration of grazing on diet selection, faecal output, eating time, forage intake and weight changes. Grazing time during the day was 6 h for T 1, 2 and...


Ayantunde, Augustine A.Fernández Rivera, S.Hiernaux, Pierre H.Y.Keulen, H. vanUdo, H.M.J.Chanono, M.[Effect of timing and duration of grazing of growing cattle in the West African Sahel on diet selection, faecal output, eating time, forage intake and live-weight changes and nutrition and performance of cattle]Effect of timing and duration of grazing of growing cattle in the West African Sahel on diet selection, faecal output, eating time, forage intake and live-weight changes and nutrition and performance of cattle

L'effet de differents types d'amendements associes ou non au parcage nocturne de bovins dans le champ, et celui de 1'application de furrier sur la production de mil et la fertilite du sol ont ete etudies. Laugmentation des rendements du mil dans le traitement paillage associe au parcage est expli...


Sangae, M.Fernández Rivera, S.Bationo, B. AndréHiernaux, Pierre H.Y.Pandey, U.S.[Effect de differents types d'amendements sur le rendement du nil et la fertilite du sol au Sahel]Effect de differents types d'amendements sur le rendement du nil et la fertilite du sol au Sahel

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