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2120 final report.pdf - Agra CEAS Consulting

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APPENDIX 2: THIRD COUNTRIES(10*) EQ ta = λ Sa ES a – λ Qa EQ a(11*) EQ ta = e a (EP ta -n ta )(12*) EP ta = e ta (αEP a + τ ta )(13*) ES c = -(γ Sp β (Sc, Sp) + γ Sa β (Sc, Sa) )EP c + γ Sp β (Sc, Sp) EP p + γ Sa β (Sc, Sa) EP a + EX(14*) ES p = γ Sc β (Sc, Sp) EP c - (γ Sc β (Sc, Sp) + γ Sa β (Sp, Sa) )EP p + γ Sa β (Sp, Sa) EP a + EX(15*) ES a = γ Sc β (Sc, Sa) EP c + γ Sp β (Sp, Sa) EP p - (γ Sc β (Sc, Sa) + γ Sp β (Sp, Sa) )EP a + EX(16*) κ X1 EX 1 + κ X2 EX 2 + κ X3 EX 3 = γ Sc ES c + γ Sp ES p + γ Sa ES a(17*) κ X1 EW 1 + κ X2 EW 2 + κ X3 EW 3 = γ Sc EP c + γ Sp EP p + γ Sa EP a(18*) EX 1 = -( κ X2 12 + κ X3 13 )EW 1 + κ X2 12 EW 2 + κ X3 13 EW 3 + ES(19*) EX 2 = κ X1 12 EW 1 – (κ X1 12 + κ X3 23 )EW 2 + κ X3 23 EW 3 + ES(20*) EX 3 = κ X1 13 EW 1 + κ X2 23 EW 2 - (κ X1 13 + κ X2 23 )EW 3 + ES(21*) EX 1 = 1 (EW 1 – t X1 )(22*) EX 2 = 2 (EW 2 – t X2 )(23*) EX 3 = 3 (EW 3 – t X3 )whereλ Si = S i /(S i +Q i )andλ Qi = Q i /(S i +Q i )and these are the relative share of domestic demand and supply for caged shell, processed eggs andalternative shell (i=c,p,a).The structural model (1*-23*) assumes equilibrium in all markets simultaneously. To solve the abovesystem of equations we re-express all equations by placing exogenous variables on the left hand side.To examine shocks (e.g., policy impacts) to the system we set an exogenous variable equal to a valuegreater or less than zero.A3.3. Data, parameters and elasticitiesTo solve the EDM (1*)-(23*) we require three sets of information:1. base equilibrium prices and quantities for all sectors and markets;2. market parameters that describe producer and consumer responses to any price change; and,3. the value of exogenous variables that quantity the shocks (the policy experiments in this case).408A3.3.1. Base equilibrium price and quantity valuesTo construct our base equilibrium prices and quantities we require annual data on prices andquantities (and total value) if possible over a given time period at all production and consumptionstages. Also, we require cost and revenue shares for the egg production sector. Where possible we

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