Mrs Dominique Pillot, French Ingeneer in Agriculture, and Jean François Le Coq, CIRAD, have carried out numerous interviews from farmers, consummers, local officers of agricultural services, policy makers or private enterprises. A pro-active conciliation approach has been applied on perception of these various people concerned with the environmental impact of pig production, their degree of implication, or their own proposals for a sustainable solution. A workshop has been held this month in Thai Binh to discuss about the formalized results with the stakeholders, and to analyse their opinions and additional possible solutions.