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The wider use and improved performance of planted tropical forages can substantially change social, economic and environmental landscapes. By reviewing impact-related studies published in the past two decades, this paper shows how evolving development priorities have influenced the types of impac...


White, D.W.Peters, MichaelHorne, P.[Global impacts from improved tropical forages: A meta-analysis revealing overlooked benefits and costs, evolving values and new priorities]Global impacts from improved tropical forages: A meta-analysis revealing overlooked benefits and costs, evolving values and new priorities

The genetic and phenotypic parameters for pre-weaning weights of Sudan Desert sheep were investigated to provide information as a basis for improvement schemes for the Sudan Desert sheep. Records of 2298 Desert lambs were used to study breed type and environmental factors influencing pre-weaning ...


El-Karim, A.I.A.Owen, J.B.[Environmental and genetic aspects of preweaning weight in two types of Sudan Desert sheep]Environmental and genetic aspects of preweaning weight in two types of Sudan Desert sheep

Describes the role of goats in farming systems in tropical and subtropical regions. Outlines methods used to evaluate their performance. Discusses the implementation of field performance tests.


Peters, Kurt J.[Evaluation of goat populations in tropical and subtropical environments]Evaluation of goat populations in tropical and subtropical environments

Compares the climates and soils and vegetation of the Ethiopian Rift Vallety with those of other areas in Africa, with particular reference to the screening of forage species. Examines the diversity of climates and soil conditions as they constitute constraints to forage or crop production in the...


Russell-Smith, A.[The environment of the Ethiopian Rift Valley compared to other areas of Africa]The environment of the Ethiopian Rift Valley compared to other areas of Africa

Outlines some of the work being done by ILCA in the field of agroecological zonation and the use of models to predict the effect of environment on pastoral and agricultural systems. Includes plans for future developments and the potential benefits of the work.


Henricksen, B.L.[Determination of agro-ecological zones in Africa: ILCA activities and expectations]Determination of agro-ecological zones in Africa: ILCA activities and expectations

Examines the productivities of N'Dama cattle, introduced Sahiwal cattle, and Sahiwal X N'Dama crossbred at the Teko Livestock Station, Sierra Leone. Evaluates environmental and genetic effects relating to breed group, month and year of parturition or birth, age, sex, individual cow etc. as approp...


Carew, S.F.Sandford, J.Wissocq, Y.J.Durkin, J.W.Trail, J.C.M.[N'dama cattle productivity at Teko Livestock Station, Sierra Leone, and initial results from cross-breeding with Sahiwal]N'dama cattle productivity at Teko Livestock Station, Sierra Leone, and initial results from cross-breeding with Sahiwal

Hulet, H.[Improving millet/cowpea intercropping in the semi-arid zone of Mali]Improving millet/cowpea intercropping in the semi-arid zone of Mali
Ngongi, N.Pridmore, P.Drechsel, PayVeenhuizen, René van[Does Africa need controlled environment agriculture?]Does Africa need controlled environment agriculture?

Animal manure is rich in absorbable plant nutrients and an appropriate addition of manure into the soil respond to high crop productivity than use of commercial fertilizer. But volatilization of ammonia due to high temperature and leaching of nitrate, phosphorous and potassium into the soil due t...


Alemayehu, N.Masafu, M.M.Ebro, A.Tegegne, Azage[Small holders managed manure nutrient losses and their implications on environment]Small holders managed manure nutrient losses and their implications on environment
Jagger, P.Luckert, M.KDuchelle, Amy E.Lund, J.F.Sunderlin, William D.[Tenure and Forest Income: Observations from a Global Study on Forests and Poverty]Tenure and Forest Income: Observations from a Global Study on Forests and Poverty

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