Rodr?guez, D., P. C. Martin, F. Alfonso, O. Tuero, and L. Sarduy. “Effect of Two Feeding Systems on Holstein Crossbred Bull Carcass Yield and Composition”. Cuban Journal of Agricultural Science, vol. 46, no. 1, Mar. 2012, https://www.cjascience.com/index.php/CJAS/article/view/79.