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Measuring The Degree Of Oligopsony Power In The Beef Packing Industry In The Absence Of Marketing Input Quantity Data

  • Muth, Mary K.
  • Wohlgenant, Michael K.

We develop a model to measure the degree of oligopsony power in the beef packing industry, while accommodating variable proportions technology, that can be estimated with fewer data requirements. In particular, nonspecialized input quantities, which are often not available, are not needed. Through application of the envelope theorem, we show that the relationship between value marginal product and marginal factor cost can be defined over the prices of the nonspecialized inputs rather than their corresponding quantities. When applied to the beef packing industry, we find no evidence of oligopsony power over our 1967-93 sample period.

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Article provided by Western Agricultural Economics Association in its journal Journal of Agricultural and Resource Economics.

Volume (Year): 24 (1999)
Issue (Month): 02 (December)

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Handle: RePEc:ags:jlaare:30795
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  1. A. M. Azzam, 1992. "Testing The Competitiveness Of Food Price Spreads," Journal of Agricultural Economics, Wiley Blackwell, vol. 43(2), pages 248-256.
  2. Appelbaum, Elie, 1982. "The estimation of the degree of oligopoly power," Journal of Econometrics, Elsevier, vol. 19(2-3), pages 287-299, August.
  3. Catherine J. Morrison, 1997. "Structural Change, Capital Investment and Productivity in the Food Processing Industry," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 79(1), pages 110-125.
  4. Gallant, A. Ronald & Jorgenson, Dale W., 1979. "Statistical inference for a system of simultaneous, non-linear, implicit equations in the context of instrumental variable estimation," Journal of Econometrics, Elsevier, vol. 11(2-3), pages 275-302.
  5. Schroeter, John R., 1988. "Estimating the Degree of Market Power in the Beef Packing Industry," Staff General Research Papers 11114, Iowa State University, Department of Economics.
  6. Ospina, Enrique & Shumway, C. Richard, 1979. "Disaggregated Analysis Of Short-Run Beef Supply Response," Western Journal of Agricultural Economics, Western Agricultural Economics Association, vol. 4(02), December.
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