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A Framework for Evaluating the Sustainability and Economic Viability of Crop-Livestock Systems in Sub-Saharan Africa

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  • Ehui, Simeon K.
  • Jabbar, Mohammad A.

Abstract

Improved crop-livestock production systems and technologies are currently being developed in sub-Saharan Africa in response to the growing demand for food and the degradation of the natural resource base. These technologies must not only enhance food production, but they also need to maintain ecological stability and preserve the natural resource base, that is, they must be sustainable. However, the notion of sustainability has been of limited operational use to policy-makers and researchers attempting to evaluate new technologies and/or determine the effects of various policies and technologies. This paper discusses a methodology for measuring the sustainability and economic viability of crop-livestock systems. The approach is based on the concept of intertemporal and interspatial total factor productivity, paying particular attention to the valuation of natural resource stock and flows. The method is applied to a data set available at the International Livestock Centre for Africa. Intertemporal and interspatial total factor productivity indexes are computed for three farming systems in southwestern Nigeria. Results show that the sustainability and economic viability measures are sensitive to changes in the stock and flow of soil nutrients as well as material inputs and outputs. The advantage of this approach is that intertemporal and interspatial total factor productivity measures are computed using only price and quantity data, thus eliminating the need for econometric estimation.

Suggested Citation

  • Ehui, Simeon K. & Jabbar, Mohammad A., 1997. "A Framework for Evaluating the Sustainability and Economic Viability of Crop-Livestock Systems in Sub-Saharan Africa," 1997 Occasional Paper Series No. 7 198202, International Association of Agricultural Economists.
  • Handle: RePEc:ags:iaaeo7:198202
    DOI: 10.22004/ag.econ.198202
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    File URL: http://ageconsearch.umn.edu/record/198202/files/agecon-occpapers-1997-042_1_.pdf
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    References listed on IDEAS

    as
    1. Ehui, Simeon K. & Spencer, Dunstan S. C., 1993. "Measuring the sustainability and economic viability of tropical farming systems: a model from sub-Saharan Africa," Agricultural Economics, Blackwell, vol. 9(4), pages 279-296, December.
    2. Diewert, W. E., 1976. "Exact and superlative index numbers," Journal of Econometrics, Elsevier, vol. 4(2), pages 115-145, May.
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    Cited by:

    1. Okike, I.O. & Jabbar, Mohammad A. & Manyong, Victor M. & Smith, J.W. & Akinwumi, J.A. & Ehui, Simeon K., 2001. "Agricultural intensification and efficiency in the West African savannas: evidence from northern Nigeria," Research Reports 182891, International Livestock Research Institute.

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