Darajat, S. Z. .; Toleng, A. L. .; Muhammad, Y.; Jawi, N. A.; Hasrin; Diansyah, A. M. . Effect of Vitamin A on Estrous Intensity, Number of Follicles, Follicles Diameter and Pregnancy Rate in Beef Cows. J. Adv. Zool. 2023, 44, 156-160.