02708nab a2200289 i 4500003000900000005001700009008004100026040001800067072001400085100002800099100004700127100002800174100003500202100003800237100002800275100002900303245009400332500006100426520161100487650001002098650001602108650001402124650001402138650002402152773016402176856007802340BR-BrBNA20250425171025.0250425b2020    bl.ar|pooa||| 00| 0 eng |  aBR-BrBNAbeng  aL01b5240  aCosta, Roberto Germano   aLima, Anny Graycy Vasconcelos de Oliveira   aRibeiro, Neila Lidiany   aMedeiros, Ariosvaldo Nunes de   aMedeiros, Geovergue Rodrigues de   aGonzaga Neto, Severino   aOliveira, Ronaldo Lopes   aPredicting the carcass characteristics of Morada Nova lambs using biometric measurements   aPublicação on-line; 31 ref.; 4 tables; Sumaries (En)  a

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  aOVINO  aCRIAÇÃO  aBIOMETRIA  aCARCAÇA  aPRODUÇÃO ANIMAL0 03545dViçosa-MG Sociedade Brasileira de Zootecnia  1997o2024-4310tRevista Brasileira de Zootecnia (Brazil)x1516-3598gv. 49 p. 1-11 ; (2020)wBR2025000643  uhttps://www.scielo.br/j/rbz/a/M839mvP55YsQXXLgF5qScKp/?format=pdf&lang=en