The impact of climate change on livestock management in Africa : a structural Ricardian analysis
AbstractThis paper develops the structural Ricardian method, a new approach to modeling agricultural performance using cross-sectional evidence, and uses the method to study animal husbandry in Africa. The model is intended to estimate the structure beneath Ricardian results in order to understand how farmers change their behavior in response to climate. A survey of over 5,000 livestock farmers in 10 countries reveals that the selection of species, the net income per animal, and the number of animals are all highly dependent on climate. As climate warms, net income across all animals will fall, especially across beef cattle. The fall in net income causes African farmers to reduce the number of animals on their farms. The fall in relative revenues also causes them to shift away from beef cattle and toward sheep and goats. All farmers will lose income but the most vulnerable farms are large African farms that currently specialize in beef cattle. Small livestock and large livestock farms respond to climates differently. Small farms are diversified, relying on dairy cattle, goats, sheep, and chickens. Large farms specialize in dairy and beef cattle. Estimating a separate multinomial logit selection model for small and large farms reveals that the two types of farm choose species differently and specifically have different climate response functions. The regressions of the number of animals also reveal that large farms are more responsive to climate. The results indicate that warming will be harmful to commercial livestock owners, especially cattle owners. Owners of commercial livestock farms have few alternatives either in crops or other animal species. In contrast, small livestock farms are better able to adapt to warming or precipitation increases by switching to heat tolerant animals or crops. Livestock operations will be a safety valve for small farmers if warming or drought causes their crops to fail.
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Bibliographic InfoPaper provided by The World Bank in its series Policy Research Working Paper Series with number 4279.
Date of creation: 01 Jul 2007
Date of revision:
Livestock&Animal Husbandry; Wildlife Resources; Rural Urban Linkages; Peri-Urban Communities; Dairies&Dairying;
This paper has been announced in the following NEP Reports:
- NEP-AFR-2007-07-20 (Africa)
- NEP-AGR-2007-07-20 (Agricultural Economics)
- NEP-ALL-2007-07-20 (All new papers)
- NEP-DCM-2007-07-20 (Discrete Choice Models)
- NEP-DEV-2007-07-20 (Development)
- NEP-ENV-2007-07-20 (Environmental Economics)
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