Accounting can play an important role as a management tool, through information to enable planning, control and decision making, turning farms into companies with the capacity to monitor the evolution of the sector, especially with regard to the objectives and functions of financial management, cost control, crop diversification and comparison of results. Soybean meal, half-whole can be an excellent alternative to livestock dairy and beef cattle and pig farming. The study aims to evaluate the production of milk in function of soybean meal feed from cold press extruder. The study was conducted in São Miguel do Iguaçu, in a rural property. We evaluated eight animals, four of which received commercial feed and four soybean meal from extruder press. The cost of production and the simple payback was calculated and discounted. The payback was found as of year one.
Key words: Agriculture family, economic viability, dairy, soybean meal.
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