Protocols for combined use of progestogen and prostaglandin in dairy and beef cattle

beef cattle bovin bovin de boucherie bovin laitier cattle ciclo estral cows cycle oestral dairy cattle females femelle fertilidad fertilite fertility ganado bovino ganado de carne ganado de leche hembra oestrous cycle performance de reproduction progestagenos progestational hormones progestogens prostaglandinas prostaglandine prostaglandins reproduction reproductive performance reproductividad vaca vache