Rendimento da carcaça e características físicas da carne de animais cruzados entre as raças Rubia Gallega e Nelore

Abstract

This study aimed to describe the yield of carcass and meat quality of crossbred and Rubia Gallega breeds Nelore. Were slaughtered 102 males mated Rubia Gallega x Nelore with an average age of 24 months, raised and fed on Brachiaria brizantha and confined for the last 100 days before slaughter receiving commercial concentrate. The variables measured were body weight at the farm (PVF), weight and hot carcass yield (carcass weight and WHR) and cold (PCF and RCF), weight and yields of the forward (PD and RD), rib (PC and RC) and back (PT and RT), twenty-four hour pH (pH 24), loin eye area (LEA) and backfat thickness (EGSC). Staining was evaluated following the L * a * b *, tenderness and cooking loss. The averages were 528.67 kg, 290.59 kg, 55.11%, 285.10 kg, 53.91%, 144.43 kg, 40.07%, 29.48 kg, 10.34%; 141.19 kg and 49.58% for the PVF, HCW, HCY, PCF, RCF, PD, RD, PC, RC, PT and RT, respectively. AOL average was 91.0 cm ² and EGSC average was 1.59 mm. The average value of tenderness was 6.35 kgf and the values obtained for meat color L * a * b * were 38.8, 10.92 and 12.29, respectively. In this study the pH 24 was 5.81 and the average cooking loss was 25.57%. The variables PVF, CCW, CC, PD, PC, PT and DR were positively correlated with the quantitative characteristics of the carcass. None of the variables of carcass quality, related only to the color L * a * b *, fat thickness and loin eye area were shown to be positively correlated with the qualitative characteristics. The crossing of the Rubia Gallega and Nelore breeds were shown to be promising for production cuts of higher commercial value, however, the values of softness and thickness of subcutaneous fat were not satisfactory to meet the demands of today's market.