Planejamento otimizado da alimentação para um sistema de produção de equinos em pastejo

AUTOR(ES)

José Evandro Gervásio de Oliveira

DATA DE PUBLICAÇÃO

2007

RESUMO

The objective of this study was to develop an economically optimal plan for pasture production and supplementary feeding of horses. The study was carried out at the Coudelaria de Rincão in São Borja, RS, which belongs to the Brazilian Army Calvary. The plan was based on the optimization of a multiperiodic linear programming model with the objective of minimizing overall feeding costs, subject to the nutritional constraints of each horse category. The model encompasses a period of one year, from January to December, divided into bimonthly periods. Technical coefficients varied among periods based on local information regarding productivity of the forage crops, taking into account the local climatic conditions and seasonality of production. Literature data on feed nutritional value (crude protein and digestible energy), dry matter intake and nutritional requirements of the horses were also used as technical coefficients. The model was implemented using an electronic spreadsheet. Optimization results allow concluding that it is possible reducing significantly the feeding costs in the horse production system by decreasing supplementation and substituting the commercial concentrate by the oats grains produced locally.

ASSUNTO(S)

agronomia ration balancing modeling pastejo linear programming modelagem balanceamento de dieta programação linear grazing

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