Espinoza Villavicencio, José Luis, Alejandro Palacios-Espinosa, Ricardo Ortega-Pérez, Ariel Guillén-Trujillo, and Eduardo Manríquez-Hirales. “Fixed-Time Artificial Insemination and Reinsemination of Beef Cows Treated With and Without Equine Chorionic Gonadotropin”. Nova Scientia 13, no. 27 (September 29, 2021). Accessed May 1, 2024. https://novascientia.lasallebajio.edu.mx/ojs/index.php/Nova/article/view/2747.