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Related Experiment Videos

Pork carcass composition: I. Interrelationships of compositional end points

K Swensen1, M Ellis, M S Brewer

  • 1Viscase Corporation, Chicago, IL, USA.

Journal of Animal Science
|October 22, 1998
PubMed
Summary

Accurate prediction of pork carcass composition is possible using various measurements. Physical and chemical analyses of pork sides can reliably estimate fat-free lean and lipid content.

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Area of Science:

  • Animal Science
  • Meat Science
  • Agricultural Science

Background:

  • Accurate assessment of pork carcass composition is crucial for livestock evaluation and trade.
  • Understanding the interrelationships between different compositional endpoints is essential for developing predictive models.

Purpose of the Study:

  • To evaluate the interrelationships between various pork carcass compositional endpoints.
  • To determine the accuracy of predicting one compositional endpoint from another using physical and chemical analyses.

Main Methods:

  • Thirty pork carcasses were dissected and chemically analyzed.
  • Compositional endpoints were measured on both physically dissected sides and whole-side grinds.
  • Linear measures and hot carcass weights were also recorded.

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Main Results:

  • High correlations (r > .85) were observed between dissectable lean percentage, lipid percentage, and dissectable fat.
  • Predictive models using dissectable components and side weight accurately estimated lean and fat percentages (R2 = .79 to .93).
  • Regression equations using 10th-rib linear measures and hot carcass weights predicted most compositional endpoints well (R2 > or = .80), except for dissectable lean (R2 = .56).

Conclusions:

  • Pork carcass composition, including fat-free lean and lipid content, can be accurately predicted using physical and chemical analyses.
  • Linear measures and carcass weight offer a viable, non-destructive method for estimating carcass composition.