PLANEJAMENTO AGREGADO DA PRODU O EM NUTRI O DE BOVINOS DE CORTE: UMA ABORDAGEM ATRAVéS DE PROGRAMA O LINEAR INTEIRA MISTA

This paper proposes a mixed linear integer programming model of master production planning on beef cattle farms environment with complete cycle (breeding and finishing). In spite of operations research approach be restricted to blending problems to formulate diets, it’s an useful and viable approach, mainly because of the special feature of this production system (comparing to factories) of having high variations of capacity (“capacity sazonality”) during the year, due to dry stations. So, the model presented aims to support decisions of animal lots dimensions and, also, in the adoption of technologies for forages (intensification decisions) and nutrition (supplementation and feedlots use). The model was run with actual date of a company of western of S o Paulo and Mato Grosso do Sul, through interviews with managers and workers. Interesting results were obtained, maing possible the optimized use of forage resources and budget dimension in advance. Preliminary results motivated to a new revision of parameters and open new fields to extend the research with new elements to empower the decision support tool.