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Two features of the specification of single-equation models of the demand for meat are explored using Canadian data, specifically the use of meat expenditures versus disposable income in the demand equation and the use of quantity versus price as the dependent variable in the demand models. The appropriateness of the expenditure or income variable is examined using non-nested J tests, and appropriateness of quantity or price as the dependent variable is explored by testing for exogeneity. The impact of different specifications on tests of structural change in the demand for meat is assessed using Chow tests. Conclusions from these tests are sensitive to the alternate specifications, confirming the importance of proper specification of demand functions in appropriate testing for structural change in the demand for meats.


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