1. Antibiotics, Biocides, Residues and Resistance Unit; Fougères Laboratory, ANSES; Fougères France
2. Biology Department; University of Rennes 1; IUT Saint-Brieuc; Saint-Brieuc France
3. Department of Fresh and Processed Meat; IFIP; Maisons-Alfort Le Rheu France
4. Hygiene and Quality of Poultry and Pork Products Unit; Ploufragan-Plouzané Laboratory, ANSES; Ploufragan France