摘要：In this paper, we assess the impact of farm size on production cost and evaluate the marginal costs and margins by considering that input prices may change with the scale of production. By using French hog farm data, we estimate a system of equations including a feed price function, input demand functions, and an output supply function based on a technology approximated by a combined generalized Leontief-Quadratic form. Our results suggest that the marginal costs are over-estimated when the adjustment of the feed unit prices to a change in farm size is not controlled for.
