• Demand for Forest Service grazing in Colorado

      Kehmeier, P. N.; Quigley, T. M.; Taylor, R. G.; Bartlett, E. T. (Society for Range Management, 1987-11-01)
      Linear programming ranch models were constructed for size of ranch and species of livestock operation within 5 regions of Colorado. Options to improve existing ranch resources and regional forage supply were included in each model. Parametric programming was used to derive shadow prices to approximate demand for USFS grazing in Colorado. Demand was derived under 3 livestock price scenarios and 2 herd management assumptions. USFS grazing demand was found to be very sensitive to livestock price changes. Variable herd management maximized profits and was able to capitalize on high livestock prices, increasing herds, thereby increasing the price of USFS forage for any given quantity. With herd size constant, ranches that could not cover variable costs ceased operation and demanded no USFS forage. Higher livestock prices could not induce increased USFS forage demand as with variable herd management. Regional differences in demand were also noted, reflecting differential transportation costs and ranch productivity.
    • Optimal economic timing of range improvement alternatives: southern High Plains

      Ethridge, D. E.; Pettit, R. D.; Sudderth, R. G.; Stoecker, A. L. (Society for Range Management, 1987-11-01)
      Profit maximizing combinations of livestock enterprises, plant control practices, and grazing management systems for ranches in the southern High Plains were examined. A typical ranch and a multi-period linear programming model were used to determine the combinations and timing of improvement practices and enterprises to maximize discounted net income with different investement capital constraints, cattle prices, and discount rates. All solutions included chemical control of sand shinnery oak (Quercus havardii) and a rotation grazing system. Timing of improvements and net income were affected by size of investment capital constraint.