SYNERGY: a bio economic model assessing the economic and environmental impacts of increased regional protein self-sufficiency
Résumé
The European Union (EU) relies on imports to meet the protein requirements of livestock. The
Common Agricultural Policy aims at improving EU protein self-sufficiency by developing the
production of protein-rich crops such as legumes. The purpose of this paper is to assess the
impacts of increased protein self-sufficiency through legume development at the regional level.
To do so, the SYNERGY bio-economic model is set up. This model accounts for (i) different
scales, (ii) different types of farm, (iii) different pedological and climatic conditions and (iv)
possible exchanges of organic fertilizers and crops between farms. It analyzes both economic
and environmental impacts, in terms of revenues and use of nitrogen. The main assumption is
that the complementarity between specialized crop farms and livestock farms can increase
protein self-sufficiency while having positive economic and environmental impacts at the
regional level. The results show that protein self-sufficiency can be slightly enhanced thanks to
exchanges between farms, as long as locally purchased crops are at least 10% cheaper than
world purchased ones. This price differential can represent the saving in terms of transport and
transaction costs. When local exchanges are possible and a GMO-free certification is set up,
legume-based rations are dominant in livestock farms, and the protein self-sufficiency is even
more enhanced. In both situations, the economic consequences are positive as incomes increase
at the regional level. However, the impacts in term of nitrogen management are more reserved.
Domaines
Economies et finances
Fichier principal
Synergy_Paper Galway_Jouan.pdf (949.77 Ko)
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Synergy_ppt Galway_Jouan.pdf (1.54 Mo)
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Format | Poster |
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Format | Présentation |
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