Use of equine chorionic gonadotropin (eCG) in Mashona heifers, under a J-Synch synchronization protocol, and its effect in pregnancy rate: Use of equine chorionic gonadotropin in a J-Synch protocol in heifers. AP [Internet]. 8 de mayo de 2023 [citado 11 de junio de 2026];. Disponible en: https://www.revista-agroproductividad.org/index.php/agroproductividad/article/view/2387