Relationship between MT1 melatonin receptor gene polymorphism and seasonal physiological responses in Île-de-France ewes Xochitl Hernandez, Loýs Bodin, Didier Chesneau, Daniel Guillaume, Daniel Allain, Philippe Chemineau, Benoît Malpaux and Martine Migaud Reprod. Nutr. Dev., 45 4 (2005) 525 DOI: 10.1051/rnd:2005042