Unanian, M. M.; Silva, A. E. D. F.; Dode, M. A. N. Zinc Levels in Seminal Plasma and Blood Serum of Pubescent Nelore Cattle, in Relation With Sperm Characteristics and Reproductive Development. PAB 1991, 26 (4), 597-604. https://doi.org/10.1590/S1678-3921.pab1991.v26.3382.