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Related Experiment Videos

Predicting beef carcass cutability

S D Shackelford1, L V Cundiff, K E Gregory

  • 1Roman L. Hruska U.S. Meat Animal Research Center, USDA, Clay Center, NE 68933-0166, USA.

Journal of Animal Science
|February 1, 1995
PubMed
Summary
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Researchers developed beef carcass cutability prediction equations using carcass and wholesale rib dissection traits. These models accurately predict retail product yield (RPYD), fat trim yield (FATYD), and bone yield (BONEYD) for efficient carcass assessment.

Area of Science:

  • Animal Science
  • Meat Science
  • Quantitative Genetics

Background:

  • Accurate prediction of beef carcass cutability is crucial for the meat industry.
  • Existing methods may lack precision or cost-effectiveness.
  • Variation in carcass composition necessitates reliable prediction models.

Purpose of the Study:

  • To develop and validate prediction equations for beef carcass cutability.
  • To assess the efficacy of using carcass traits, dissection traits, and chemical traits for prediction.
  • To identify the most effective predictors of retail product yield (RPYD), fat trim yield (FATYD), and bone yield (BONEYD).

Main Methods:

  • Utilized data from 1,602 calf-fed steer carcasses (Germplasm Utilization Project; GPU) for equation development.

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  • Validated equations using an additional 1,160 calf-fed steer carcasses (Germplasm Evaluation Project; GPE).
  • Developed models using combinations of carcass traits, wholesale rib dissection traits, 9-10-11 rib dissection traits, and chemical traits.

    • Main Results:

    • Wholesale rib dissection traits were the best single predictors for RPYD, FATYD, and BONEYD.
    • Models incorporating wholesale rib dissection traits explained substantial variation: 87% for RPYD, 88% for FATYD, and 77% for BONEYD.
    • Validation showed models explained 74-78% of phenotypic variation and 84-96% of genetic variation in cutability traits.

    Conclusions:

    • Prediction equations using carcass and wholesale rib dissection traits provide rapid, precise, and cost-effective assessment of beef carcass cutability.
    • These models can improve the evaluation of variation in retail product yield, fat trim, and bone yield.
    • The findings support the use of dissection data for enhancing carcass value estimation.