Introduction: Organic egg production has a number of ecological problems; an ecological unsustainable production cycle, high ammonia emissions from the hen house and high soil concentrations of nitrogen and phosphorus in the outdoor run. To evaluate these problems an integral chain oriented research method Life Cycle Assessment is used. Missing data of the main polluting processes are measured in practise. In a parcipatory process solutions for the main environmental polluting processes are gathered. The most promising solutions are tested in practice for their ecological reduction potential. Solutions are added up in a futuristic chain design and evaluated for ecological, economical and societal gain.
Results: * 62% of global warming of organic eggs is caused by emission of nitrous oxide from the concentrate production chain. * 57% of acidification of organic eggs is caused by ammonia emission from the laying hen farm. * 47% of energy use for egg production is oil used in the concentrate production chain * 95% of the land used for organic egg production is covered by arable land for concentrate production. * options for the farmer to steer on reduction of the environmental impact are the number of produced eggs, the amount of consumed concentrates and the type of housing.