Hasan F, Sitepu SAP, Alwiyah A. The Influence of Parity Against a Percentage of Estrus of Ekor Tipis Sheep that are Synchronized Estrus Using Prostaglandin F2α (PGF2α). JIPTHP [Internet]. 2018Jan.24 [cited 2024May1];5(1):46-8. Available from: https://journal.ipb.ac.id/index.php/ipthp/article/view/19627