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2120 final report.pdf - Agra CEAS Consulting

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APPENDIX 2: THIRD COUNTRIES<strong>report</strong>ed in the literature. For example, Trewin (2002) employs an own price demand elasticity foreggs of –0.1 to –0.3. These estimates are drawn from the literature, especially the work ofOczkowski and Murphy (1999). Given the range of these estimates we employ –0.5 for caged shelland –0.8 for alternative shell.In terms of the demand elasticity for processing there appear to be no elasticities currently availablein the literature. Given that the demand is from manufacturing/processing industries it can beexpected that they will have a relatively inelastic demand. However, processors do not need topurchase shell eggs and can buy egg products which will have the effect of making demand moreelastic. As a compromise we assume an own price demand elasticity of -1.Cross-price (η)In terms of cross-price elasticities Baltzer (2003) provides estimates for caged and alternative shelleggs. In relation to processed eggs there are no cross-price elasticities. As a result we haveemployed what we consider to be sensible estimates. Given that we assume that these goods aresubstitutes, Zhao et al., (2000a) details two important conditions for the cross-price elasticities tosatisfy. First,ηij = (λj/λi)*ηjiwhere λi and λj are the relative budget shares. Second, we need to ensure that ηii≤0 ηij≥0 andThe various cross-price elasticities presented in Table A3.1 have been chosen based on ‏.׀ηij׀

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