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Economically Optimal Stocking Rates: A Bioeconomic Grazing Model

John P. Ritten, Christopher T. Bastian and W. Marshall Frasier
Rangeland Ecology & Management
Vol. 63, No. 4 (JULY 2010), pp. 407-414
Stable URL: http://www.jstor.org/stable/40802662
Page Count: 8
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Economically Optimal Stocking Rates: A Bioeconomic Grazing Model
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Abstract

A dynamic bioeconomic model that examines economically optimal stocking rate decisions while taking into account changes in forage availability is presented. The model presented here focuses on economically optimal stocking decisions while taking into account changes in the forage resource. The model is parameterized for a stocker operation in central Wyoming. Regardless of the scenario analyzed, the general rule of 50% utilization is determined to be an economically sound management strategy. The factors most heavily influencing economically optimal stocking rate decisions are forage growth rates and the Michaelis Constant. Both grain prices and cattle prices impact financial returns yet do not directly impact optimal stocking decisions by cattle producers. Se presenta un modelo bioeconómico dinámico que examina decisiones de carga animal económicamente óptimas tomando en cuenta al mismo tiempo cambios en la disponibilidad forrajera. El modelo que aquí se presenta se enfoca en decisiones de carga animal económicamente óptimas tomando en cuenta al mismo tiempo cambios en la disponibilidad forrajera. El modelo se configuró para un establecimiento de engorde en el centro del estado de Wyoming. Independientemente del escenario analizado, se determinó que la regla general del 50% de uso es una estrategia de manejo económicamente sólida. Los factores que ejercen mayor influencia en la decisión de carga animal económicamente óptima son las tasas de crecimiento del forraje y la Constante de Michaelis. Los precios de granos y del ganado ejercen un impacto en el retorno financiero, pero no influyen de modo directo las decisiones de carga animal óptima de los productores ganaderos.

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