Prediction of retail beef yield, trim fat and proportion of high-valued cuts in Nellore cattle using ultrasound live measurements - Silva, Saulo da Luz e; Tarouco, Jaime Urdapiletta; Ferraz, José Bento Sterman; Gomes, Rodrigo da Costa; Leme, Paulo Roberto; Navajas, Elly Ana (Revista Brasileira de Zootecnia, 2012)