Framework conditions of pig production

Soybean meal is used worldwide in conventional pig production, as the most important protein source. In addition, there are high value proteins from the 

In general, genotypes used in conventional production are characterised by a high capacity for protein accretion. This is achieved by crossbreeding different strains, mostly belonging to the Landrace, Large White, Duroc, and/or Hampshire breeds. Additionally, boars of the Pietrain breed are used to sire because of their famous effect on lean meat percentage. 

2000) are examples of unconventional production systems with specific and highly demanded characteristics. These production systems have served as models to introduce new production systems, for example free-range systems. At present, only limited information is available regarding the influence of these systems on eating quality and some of the data available often involve eating quality problems rather than improvements (Jakobsen and Hermansen, 

Owing to the huge variation within this production method, the following does not especially refer to this production method. 

The genotypes used in organic farming are often the same crossbreeds as in conventional production but also encompass a wide range of rare breeds characterised by specific traits. Sometimes conservation of rare breeds is the objective in different farm units. 

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