Results of the use of the DISKOT system [performance and reproduction control in cows] and RIA method in progesterone determination

artificial insemination bovin laitier corps jaune corpus luteum cow milk cows dairy cattle economic analysis farm inputs ganado de leche insumos agricolas lait de vache leche de vaca moyen de production agricole muestreo oestrus synchronization performance de reproduction radioimmunoassay reproductividad reproductivity sampling synchronisation de l'oestrus vaca vache