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Correlations among selected pork quality traits.

E Huff-Lonergan1, T J Baas, M Malek

  • 1Department of Animal Science, Iowa State University, Ames 50011, USA. elonerga@iastate.edu

Journal of Animal Science
|March 15, 2002
PubMed
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Understanding pork quality involves examining relationships between various meat traits. This study found significant correlations between carcass composition, instrumental measurements, and sensory evaluations, aiding future research into pork quality development.

Area of Science:

  • Animal Science
  • Meat Science
  • Genetics

Background:

  • Establishing relationships among specific quality traits is crucial for improving pork quality.
  • A three-generation resource family was developed to study the effects of genes on meat quality traits in pigs.

Purpose of the Study:

  • To examine the individual effects of genes on meat quality traits in pigs.
  • To identify phenotypic correlations among various carcass, instrumental, biochemical, and sensory meat quality traits.

Main Methods:

  • A three-generation resource family (Berkshire x Yorkshire) with 525 F2 offspring was created.
  • Pigs were slaughtered, and carcass composition, pH, and subjective scores were measured at 24 h postmortem.
  • Loin samples were evaluated for pH, Hunter L-values, drip loss, glycolytic potential, myosin heavy chains (IIa/IIb), total lipid, tenderness (Star Probe), cook loss, and sensory attributes at 48 h postmortem.

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Main Results:

  • Significant phenotypic correlations were observed between many meat quality traits.
  • Star Probe tenderness measurements correlated with drip loss, glycolytic potential, pH, total lipid, and Hunter L-values.
  • Sensory tenderness, flavor, and off-flavor scores were significantly correlated with drip loss, pH, and glycolytic potential.

Conclusions:

  • Changes in certain meat quality traits significantly impact other attributes.
  • The identified correlations provide valuable information for future research into the biological mechanisms of pork quality development.