Garzón-Jarrín, R. A.; Chicaiza-Sánchez, L. A.; Andrade-Aulestia, P. M.; Villavicencio-Villavicencio, B. J.; García-Díaz, J. R. Effect of Vitamins, Minerals and Amino Acids Supplementation on the Return to Heat of Holstein Cows in Cotopaxi, Ecuador. Technical Note. Rev. Cient. FCV-LUZ 2025, 35, 7.