Estrus Synchronization ProtocolsProtocols For Synchronization Of Estrus And Ovulation Beef Cow Protocols Beef Heifer Protocols Comparison of three CIDR based fixed-time AI protocols for beef heifers Timed – Artificial Insemination in Beef Cows: What are the Options? Optimizing a New 5-day CIDR-CO-Synch Timed Artificial Insemination Program