One of the major sectors within the Agricultural Resource Interregional Modeling System is the livestock sector. There are two types of sectors developed in this manuscript. When location and rations of the livestock sector can be fixed, and the analysis is not going to significantly impact the sector, a fully exogenous sector can be implemented. However, in many cases location of livestock production depends on the competitive nature of each region. This can change as a result of a shift in production, resource limitations, resource surpluses, changes in resource availability or costs, etc. If the analysis is to evaluate the impacts these types of changes will have an livestock, then a partially endogenous livestock sector is required.
English, Burton C.; Disney, W. Terry; and Schraufnagel, Stanley A., "Resource Conservation Act Analysis: A Documentation of the Endogenous and Exogenous Livestock Sectors of the Agricultural Resource Interregional Modeling System" (1989). CARD Technical Reports. 9.