Swine creation on an industrial scale results in intense production of dejections in the rural properties, consequences that reveal in the soil, air, fauna, flora and socio-economic environment; in this context, negative externalities can interact with other variable or economic actions, represented, for example, by the expenses with the conservation of the environment and, in particular, in Mato Grosso, by participation in the Program of Quality Farm, a state instrument of fiscal renunciation. After estimating the technical efficiency indices with data of ten properties situated in Mato Grosso from production functions, whose dependent variable is represented by the production of swine and the independent ones are the consumption of water, electricity and the amount of workers directly tied with the productive process. It was verified that the expenses with the conservation of the environment exert a positive effect on technical efficiency indices, while the participation in the Program of Quality Farm, differently from the previous variable, shows itself to be statistically not significant.
externalities; conservation; fiscal policy
