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Integrated crop-livestock simulation models for scenario analysis and impact assessment

By: Thornton, P.K.
Contributor(s): Herrero, M.
Material type: materialTypeLabelArticlePublisher: 2001ISSN: No (Revista en electrónico); 0308-521X.Subject(s): Crop-livestock interactions | Decision-support systems | Economic surplus | Model | Simulation In: Agricultural Systems v. 70, no. 2-3, p. 581-602Summary: Despite the fact that many smallholder farming systems in developing countries revolve around the interactions of crop and livestock enterprises, the modelling of these systems using combinations of detailed crop and livestockmodels is comparatively under-developed. A wide variety of separate crop and livestockmodels exists, but the nature of crop?livestock interactions, and their importance in smallholder farming systems, makes their integration difficult. Even where there is adequate understanding of the biophysical processes involved, integratedcrop?livestockmodels may be constrained by lack of reliable data for calibration and validation. The construction from scratch of simulationmodels that meet the needs of one particular case is generally too costly to countenance. As for all modelling activity, the most efficient way to proceed depends on the nature of the systems under study and the precise questions that have to be addressed. We outline a framework for the integration of detailed biophysical crop and livestocksimulationmodels. We highlight the need for minimum calibration and validation data sets, and conclude by listing various research problems that need attention. The application of robust and trustworthy crop?livestockmodels is critical for furthering the research agenda associated with animal agriculture in the tropics and subtropics.Collection: Reprints Collection
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Article CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

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Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0308-521X

Despite the fact that many smallholder farming systems in developing countries revolve around the interactions of crop and livestock enterprises, the modelling of these systems using combinations of detailed crop and livestockmodels is comparatively under-developed. A wide variety of separate crop and livestockmodels exists, but the nature of crop?livestock interactions, and their importance in smallholder farming systems, makes their integration difficult. Even where there is adequate understanding of the biophysical processes involved, integratedcrop?livestockmodels may be constrained by lack of reliable data for calibration and validation. The construction from scratch of simulationmodels that meet the needs of one particular case is generally too costly to countenance. As for all modelling activity, the most efficient way to proceed depends on the nature of the systems under study and the precise questions that have to be addressed. We outline a framework for the integration of detailed biophysical crop and livestocksimulationmodels. We highlight the need for minimum calibration and validation data sets, and conclude by listing various research problems that need attention. The application of robust and trustworthy crop?livestockmodels is critical for furthering the research agenda associated with animal agriculture in the tropics and subtropics.

English

Carelia Juarez

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