Ramírez Ramírez , A.I., Delgado Tiburcio, G.I. , Cruz-Espinoza, F. , Herrera-Corredor, A.C. . y Gallegos-Sánchez, J. 2021. Photoperiod and its relationship to sheep reproduction. Agro Productividad. (nov. 2021). DOI:https://doi.org/10.32854/agrop.v14i10.1620.