| Summary: | The important position and role of mixed farming systems in land use intensification in subSaharan Africa is reviewed. This is done by examining the current situation that is followed with a justification for mixed farming. Further sections follow on changing patterns of land use, including the effects of tsetse flies and trypanosomiasis, and on constraints to further crop-livestock integration. Research needs are considered in a final section with particular emphasis on biophysical factors (feed development, nutrient management, dualpurpose livestock, animal health, genetic improvement and natural resource management) and policy analysis.
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