temps (durée) (2) Treatment (2) Area (2) Area (2) Time (2) Progesterone (2) Days (2) Day (2) administration (1) tissu (corporel) (1) saison (1) élimination (1) champ (1) delta (1) ordre (1) taux (1) Control (1) Artificial insemination (1) Year (1) Winter (1) Values (1) Ultrasonic imaging (1) Summer (1) State, The (1) Spring (1) Seasons (1) Political science (1) Ovulation (1) Order (1) Mares (1)