Estimates of phenotypic interrelationships for beef cattle destined for slaughter
DOI:
https://doi.org/10.5965/22381171e27016Keywords:
Carcass, Rump fat thickness, Animal production, Weight, Zootechnical parametersAbstract
This work aimed to carry out a mapping of a meat production system in southern Brazil, seeking to investigate the estimates of phenotypic interrelationships through the measurement of variables: body condition score (BCS), final weight (FW), rump fat thickness (RFT), hot carcass weight (HCW), finishing and yield of cattle destined for slaughter. Totaling 200 Angus animals, 14±2 months old, healthy steers, evaluated at the time they were loaded into the slaughterhouse. The finishing degree of the animals presented a coefficient of variation of 21.87 and for RFT of 18.53. The determinant variables for the finishing degree were the BCS, the yield and the weight, where animals with the highest finishing degree had BCS greater than 4, weight greater than 497 kg, and yield greater than 57%. The final weight of the animals still on the farm proved to be an important variable for predicting results such as finishing degree, yield and hot carcass weight. Evidences that the variables of income, weight and body condition score are decisive for obtaining desirable rump fat thickness, as well as the finishing degree.
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