米国飲用乳市場の競争性の計測

抄録

　In this paper, it was shown how the U.S. dairy policies (marketing orders and support prices for manufacturing milk) and market power of farmers' cooperatives affect the degree of competition in the U.S. fluid milk market. This is the first development of a degree-of-competition measure for the U.S. fluid milk market. The estimated degree-of-imperfection parameter implies that there is small degree of imperfection which has been declining over time in the U.S. fluid milk market. It also implies that the degree of imperfection is larger in fall and winter than in spring and summer.