Machado, D.S., Alves Filho, D.C., Argenta, F.M., Brondani, I.L. and Martini, A.P.M. 2018. Serum levels of testosterone and performance of surgical or immunocastrated beef steers. Comunicata Scientiae. 9, 3 (Nov. 2018), 303–311. DOI:https://doi.org/10.14295/cs.v9i3.2498.