[Secretion of the luteinising hormone in postpartum cows with glucose infusions]

analyse statistique blood blood sampling blood sugar ciclo estral cows cycle oestral densidad density evaluation glucosa glucose gonadotropin releasing hormone hormona liberadora de gonadotropina in vivo experimentation insulin insulina insuline lh oestrogens oestrous cycle oestrus synchronization puerperio puerperium sang sangre statistical analysis sucre du sang synchronisation de l'oestrus vaca vache