Estimating feed utilisation matrices using a cost function approach
提出一种多产出成本函数框架来构建国家饲料平衡表或饲料利用矩阵，应用于比利时配合饲料行业，利用1962-88年时间序列数据估计，识别不同牲畜类别的饲料成分分配和配合饲料组成。
In this paper a multiple-output cost function framework is proposed to construct national feed balances or feed utilisation matrices (FUMs). The framework is applied to the Belgian compound feed industry. For estimation purposes a Symmetric Generalised McFadden (SGM) cost function is selected. The cost function is estimated using readily available time-series data for the period 1962-88. Unlike previous studies based on duality theory, this study exploits the properties of nonjointness in animal feed production to establish a complete FUM. The allocation of feed ingredients among different livestock categories as well as the composition of various compound feeds are identified. Also own- and cross-price elasticities of demand for feed ingredients by type of livestock are reported.