Serum (2) Cows (2) Blood (2) protocole (1) effet (1) taux (1) Artificial insemination (1) Rates (1) Birth (1) Ultrasonic imaging (1) Synchronization (1) Progesterone (1) Pregnancy (1) Parturition (1) Luteal phase (1) Labor (Obstetrics) (1) Growth (1) Generative organs (1) Enzyme-linked immunosorbent assay (1) Days (1) Day (1) Conception (1) Childbirth (1) Artificial insemination (1) Older people (1) Birth (1) Rates (1) Pregnancy (1) Growth (1) Examination (1)