Estrus Synchronization Using Prostaglandin F2α (PGF2α) and Combination of PGF2α and Gonadotropin-Releasing Hormone In Ongole CrossbredPudji Astuti, Claude M. Airin, Slamet Widiyanto, Sarmin Sarmin, Amelia Hana, Hera Maheshwari and Luthfiralda SjahfirdiE3S Web Conf., 151 (2020) 01009DOI: https://doi.org/10.1051/e3sconf/202015101009