@article{Carvajal-Serna:85400, author = "Carvajal-Serna, M. and Torres-Ruda, F. and Cardozo, J.A. and Grajales-Lombana, H. and Cebrián-Pérez, J.Á. and Muiño-Blanco, T. and Pérez-Pé, R. and Casao, A.", title = "{Changes in melatonin concentrations in seminal plasma are not correlated with testosterone or antioxidant enzyme activity when rams are located in areas with an equatorial photoperiod}", year = "2019", }