The dynamics of an animal - vegetation system: Sheep farming
AbstractThe paper studies the economy and ecology of sheep farming at the farm level in a Nordic context, with a crucial distinction between the outdoors grazing season and the winter indoors feeding season, and where climate conditions fix the length of the grazing season. Two different categories of animals, ewes (adult females) and lambs, and one plant species are included in our ecological model. The farmer is assumed to maximize present-value profit where the revenue is made up income from meat and wool production, and we find that livestock cycles may represent an optimal management policy. We also show that, in a possible steady state with a constant number of animals and constant vegetation quantity, slaughtering either only lambs or only ewes is optimal.
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Bibliographic InfoPaper provided by Department of Economics, Norwegian University of Science and Technology in its series Working Paper Series with number 13612.
Length: 32 pages
Date of creation: 28 Sep 2012
Date of revision:
sheep farming; vegetation growth; dynamics;
Find related papers by JEL classification:
- Q12 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Micro Analysis of Farm Firms, Farm Households, and Farm Input Markets
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- Rosen, Sherwin & Murphy, Kevin M & Scheinkman, Jose A, 1994.
Journal of Political Economy,
University of Chicago Press, vol. 102(3), pages 468-92, June.
- Sherwin Rosen & Kevin M. Murphy & Jose A. Scheinkman, 1993. "Cattle Cycles," NBER Working Papers 4403, National Bureau of Economic Research, Inc.
- Rosen, S. & Murphy, K.M. & Scheinkman, J.A., 1993. "Cattle Cycles," University of Chicago - Economics Research Center 93-2, Chicago - Economics Research Center.
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