Oxytocin and milk removal: two important sources of variation in milk production and milk quality during and between milkings Vanessa Lollivier, Jocelyne Guinard-Flament, Michèle Ollivier-Bousquet and Pierre-Guy Marnet Reprod. Nutr. Dev., 42 2 (2002) 173-186 DOI: 10.1051/rnd:2002016