@misc{misc967d10f9,
title   = {Age and onset of puberty is negatively related to plasma testosterone in Nellore and Santa Gertrudis bulls},
author = {Sanches, A. C. and Lôbo, Raysildo Barbosa and Magnobosco, C. D. U.},
year = {2000},
booktitle   = {Joint Annual Meeting and Northeast Section Meeting of the American Dairy Science Association & American Society of Animal Science}
}