Joezy-Shekalgorabi, Sahereh, Abdol Ahad Shadparvar, Albert De Vries, and Keegan Douglas Gay. “The Extent of Increase in First Calving Age As a Result of Implementing Various Sexed Semen Breeding Strategies”. Spanish Journal of Agricultural Research 12, no. 1 (January 31, 2014): 106-116. Accessed July 31, 2026. https://sjar.revistas.csic.es/index.php/sjar/article/view/4516.