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Associations between two gene markers and indicator traits affecting fresh and dry-cured ham processing quality
K J Stalder1, M F Rothschild, S M Lonergan
1Department of Animal Science, Iowa State University, 109 Kildee Hall, Ames, IA 50011-3150, USA; Center for Integrated Animal Genomics, Iowa State University, Ames, IA 50011-3150, USA.
The CAST gene significantly impacts dry-cured ham processing, affecting moisture, yield, and color. Specific CAST genotypes, like CAST 11 and CAST 22, offer distinct advantages for processing efficiency and final product characteristics.
Area of Science:
- Animal Science
- Food Science
- Genetics
Background:
- Understanding genetic factors influencing meat quality is crucial for optimizing pork processing.
- PRKAG3 and CAST genes are investigated for their potential roles in meat characteristics.
Purpose of the Study:
- To evaluate the impact of PRKAG3 and CAST gene mutations on the processing and dry-curing characteristics of pork.
- To identify specific genotypes associated with desirable processing outcomes.
Main Methods:
- Pork semimembranosus samples were subjected to standard commercial processing and dry-curing procedures.
- DNA was extracted from frozen samples for genotyping of CAST and PRKAG3 markers.
- Statistical analysis was performed to determine the significance of gene markers on processing traits.
Main Results:
- The PRKAG3 gene marker showed no significant effect on dry-cured ham processing.
- The CAST gene marker significantly influenced cured ham moisture content (P<0.05).
- CAST gene marker also showed a trend towards significance for yield, weight loss, salt content, and color change (P<0.10).
Conclusions:
- The CAST gene is a key genetic determinant for variations in dry-cured ham processing.
- CAST genotype 11 is linked to enhanced processing yields.
- CAST genotype 22 is associated with improved moisture loss, reduced processing time, and higher salt content in cured hams.
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