Farm system evaluated: pig farm in Centre region of France

First, this tool is based on one farm system, it is an example and it has not to be consider as recommendations for all pig farming system. Features of the farm are presented: cropping system, pig breeding, feeding system and economics results. On this base, several ways of improvements are identified about protein autonomy and crop rotation. The objective is to consider points for modification in the whole system; for example, diversified crop rotations change what is available for pig feed. Simulations show how the system can be modified to integrate more legumes in the crop rotation. New feed formulations are made considering the new available feedstuff. Specifics equipment requirements are also described. These specifics allowed the evaluation of economic impacts of such practical changes on the farming system. The conclusion showed an economic gain, increased protein autonomy, and a more resilient crop system. This tool can be used by farmers and advisors to find inspiration related farm system changes. Although the example is specific to France, the principles are not site specific and can be applied to other farming systems.