九州大学大学院生物資源環境科学府農業資源経済学専攻農政学研究分野
Laboratory of Food and Agricultural Policies, Department of Agricultural and Resource Economics, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
Previous studies such as Koizumi (2007), Ohga et al. (2009) and MAFF Policy Res. Inst. (2010) appear not to have enough data base to incorporate the exact amount of corn fed to pork. Accordingly, they may have under-estimated their demand elasticity for corn to feed. In this research, concentrating on large scale pork producing farms which mainly use corn for feeding, a large demand elasticity for corn at 0.904 was found with a 1% significance level. This may explain more realistic situation that has been going on in Chinese pork industry. Price elasticity for corn relative to wheat was also estimated at -0.360 with a 10% significance level for the large scale pork production indicating that price ratio between corn and wheat is critical.