Serrano, M. P., L. Camara, D. G. Valencia, R. Lazaro, M. A. Latorre, and G. G. Mateos. “Effect of Energy Concentration on Growth Performance and Carcass Quality of Iberian Pigs Reared under Intensive Conditions”. Spanish Journal of Agricultural Research, Vol. 11, no. 2, May 2013, pp. 405-16, doi:10.5424/sjar/2013112-3374.