02803nab a2200325 i 4500 BR-BrBNA 20250425171025.0 250425b2020 bl.ar|pooa||| 00| 0 eng | BR-BrBNA eng L01 5240 Costa, Roberto Germano Lima, Anny Graycy Vasconcelos de Oliveira Ribeiro, Neila Lidiany Medeiros, Ariosvaldo Nunes de Medeiros, Geovergue Rodrigues de Gonzaga Neto, Severino Oliveira, Ronaldo Lopes Predicting the carcass characteristics of Morada Nova lambs using biometric measurements Publicação on-line; 31 ref.; 4 tables; Sumaries (En) ABSTRACT - The objective of this work was to use biometric measurements to predict carcass characteristics of lambs of the Morada Nova breed. We used 48 lambs with mean initial body weight (BW) of 15.0±0.04 kg and slaughter body weight (SBW) of 26.37±2.43 kg. The animals were weighed weekly and underwent a period of adaptation of 15 days before slaughter. The biometric measurements were obtained the day before slaughter, comprising body length, withers height, rump height, thigh length, breast width, rump width, thigh perimeter, rump perimeter, thorax perimeter, leg length, and body condition score. Additional measurements included slaughter BW and empty BW (EBW). The data recorded at slaughter comprised the weights of the viscera, carcass, and internal fat and offal. The in vivo measurements of body length were present in most of the equations for predicting the SBW, EBW, hot carcass weight (HCW), and cold carcass weight (CCW). The SBW and EBW presented a variation of approximately 9%. The variables that evaluated the carcass, HCW, and CCW demonstrated less data variation than SBW and EBW, which was probably because these measurements were obtained following evisceration and skinning, thus removing factors of more significant variation in vivo. The prediction models found in the present study varied with an R² of 0.49-0.93, indicating high levels of variation. In sum, biometric measurements can be used to predict the carcass characteristics of Morada Nova lambs with different body conditions. Keywords: biometry, carcass quality, lamb carcass, Morada Nova, prediction models OVINO CRIAÇÃO BIOMETRIA CARCAÇA PRODUÇÃO ANIMAL 3545 317600 Viçosa-MG Sociedade Brasileira de Zootecnia 1997 2024-4310 Revista Brasileira de Zootecnia (Brazil) 1516-3598 v. 49 p. 1-11 ; (2020) BR2025000643 https://www.scielo.br/j/rbz/a/M839mvP55YsQXXLgF5qScKp/?format=pdf&lang=en ANA 331210 331210