The importance of product cut and form when estimating fish demand: the case of U.S. Catfish
The absolute price version of the Rotterdam model was used in the estimation of U.S. catfish demand where catfish was differentiated by product cut (whole, fillet, and other) and product form (fresh and frozen). Likelihood ratio tests were used to determine the importance of product form in demand (product form aggregation). Likelihood ratio tests were also used to determine if fresh products were separable from frozen products (product form separability). Product form aggregation was rejected at a probability of 0.999, suggesting that fresh and frozen catfish products are not homogenous. The hypothesis, no product form separability, failed to be rejected at the 0.05 significance level, but was rejected at the 0.01 significance level. Test results suggest that it is more acceptable to focus on a single product group (e.g., frozen products) than to assume that catfish products are perfectly aggregatable across product forms. [JEL classifications: Q11, Q13, Q22]. © 2009 Wiley Periodicals, Inc.
Volume (Year): 25 (2009)
Issue (Month): 4 ()
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- Chiang, Fu-Sung & Lee, Jonq-Ying & Brown, Mark G., 2001. "The Impact Of Inventory On Tuna Price: An Application Of Scaling In The Rotterdam Inverse Demand System," Journal of Agricultural and Applied Economics, Southern Agricultural Economics Association, vol. 33(03), December.
- Brown, Mark G. & Lee, Jonq-Ying, 2000. "A Uniform Substitute Demand Model With Varying Coefficients," Journal of Agricultural and Applied Economics, Southern Agricultural Economics Association, vol. 32(01), April.
- K.W. Clements & E.A. Selvanathan & S. Selvanathan, 1996.
"Applied Demand Analysis: A survey,"
Economics Discussion / Working Papers
96-04, The University of Western Australia, Department of Economics.
- Barten, A. P., 1969. "Maximum likelihood estimation of a complete system of demand equations," European Economic Review, Elsevier, vol. 1(1), pages 7-73.
- Barten, A. P. & Bettendorf, L. J., 1989. "Price formation of fish : An application of an inverse demand system," European Economic Review, Elsevier, vol. 33(8), pages 1509-1525, October.
- Moschini, GianCarlo & Moro, D. & Green, Richard D., 1994. "Maintaining and Testing Separability in Demand Systems," Staff General Research Papers 11247, Iowa State University, Department of Economics.
- Seale, James L., Jr. & Sparks, Amy L. & Buxton, Boyd M., 1992. "A Rotterdam Application To International Trade In Fresh Apples: A Differential Approach," Journal of Agricultural and Resource Economics, Western Agricultural Economics Association, vol. 17(01), July.
- Ligeon, Carel & Jolly, Curtis M. & Jackson, John D., 1996. "Evaluation Of The Possible Threat Of Nafta On U.S. Catfish Industry Using A Traditional Import Demand Function," Journal of Food Distribution Research, Food Distribution Research Society, vol. 27(2), July.
- Italianer, Alexander, 1985. "A small-sample correction for the likelihood ratio test," Economics Letters, Elsevier, vol. 19(4), pages 315-317.
- Eales, James S. & Roheim, Cathy A., 1999. "Testing Separability Of Japanese Demand For Meat And Fish Within Differential Demand Systems," Journal of Agricultural and Resource Economics, Western Agricultural Economics Association, vol. 24(01), July.
- Yang, Seung-Ryong & Koo, Won W., 1994. "Japanese Meat Import Demand Estimation With The Source Differentiated Aids Model," Journal of Agricultural and Resource Economics, Western Agricultural Economics Association, vol. 19(02), December.
- Seale, James L., Jr., 2003. "Uniform Substitutes When Group Preferences are Blockwise Dependent," Journal of Agricultural and Applied Economics, Southern Agricultural Economics Association, vol. 35.
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