PerfAlim: Principles and calculation steps

Before you start, prepare the data needed by the tool.You will have to put the annual net quantities of animal and vegetal products, bought or sold by the farm or the territory. For example: with my farm I sell 800 tons of wheat, 500 000 liters of milk and 12 cull cows per year. I buy 20 tons of dairy cattle balanced feed and 10 pre-calving heifers.