Computed tomography (CT) is a non-destructive technique, based on X-rays, that has been used in several livestock species to evaluate carcass composition. The objective of this study was construct predictive equations estimate and viscera composition for preweaning calves using CT. For purpose, 24 Holstein male (4 ± 0.9 d age; 40 2.2 kg body weight) were fed milk replacer (MR; 23% CP; 15% fat) ...