Correlação e regressão entre mensurações corporais e características de carcaça em bovinos da raça Nelore.

Abstract

To add quality to the final product, it is necessary to use technologies that carry out the identification and use of superior genetics. The objective was to evaluate the relationship between body measurements (AP and PT) and carcass characteristics evaluated by ultrasonography (AOL, EGS and MAR), through Pearson linear correlation analysis and linear regression. The data used were obtained from the archives of the Santa Nice farm (Amaporã-PR). A total of 543 animals that had AP and PT measurements at 490 days were analyzed. Carcass characteristics were evaluated using ultrasonography equipment. Analyzes were performed using the SAS program. AP and PT presented positive and moderately significant correlation with AOL and negative and weakly significant with MAR. AP and PT showed a negative correlation with EGS, but significant only between AP and EGS, which was negative and very weak. Linear regression analyzes followed correlations, being significant for all analyzed variables, except for PT and EGS. Thus, it was concluded that body measurements such as AP and PT are not good indicators of meat quality related to fat deposition, such as EGS and MAR, however, both AP and PT can be used to increase AOL. Keywords: Body measurements. Carcass characteristics. Nellore.