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Table 3 Genes belonging to the heat shock protein family whose expression levels were the most correlated with initial or overall tenderness scores in the reference group (young bulls slaughtered year 1)

From: The GENOTEND chip: a new tool to analyse gene expression in muscles of beef cattle for beef quality prediction

    

Correlation with initial tenderness

Correlation with overall tenderness

 

Animal type

Year

Number of animals

Person coefficient

Spearman coefficient

Person coefficient

Spearman coefficient

Hsp27*

young bulls

year 1

25

-0.53

-0.50

-0.51

-0.50

DNAJA1

young bulls

year 1

25

-0.50

-0.59

-0.48

-0.59

DNAJC3

young bulls

year 1

25

-0.48

-0.49

-0.40

-0.49

HspH1

young bulls

year 1

25

-0.47

-0.47

-0.43

-0.47

HspA8

young bulls

year 1

25

-0.46

-0.50

-0.44

-0.50

HspB1

young bulls

year 1

25

-0.46

-0.43

-0.42

-0.42

DNAJB5

young bulls

year 1

25

-0.42

-0.45

-0.39

-0.49

HspA6

young bulls

year 1

25

-0.41

-0.40

-0.42

-0.37

CRYAB

young bulls

year 1

25

-0.40

-0.38

-0.40

-0.41

  1. Among the 70 genes belonging to the heat shock protein family with probes on the GENOTEND chip, some genes were identified with the highest correlation coefficients with tenderness scores (they were the most associated with tenderness through the principal component analysis). Individual correlation coefficients (Pearson coefficient and Spearman coefficient) are indicated for each gene. Standard errors on the estimates of Pearson coefficients are between 0.18 and 0.19. Multiple regression analyses were performed with the combination of the first 6 genes (bold type) for young bulls slaughtered year 1. All together, these 6 genes explained up to 49-50% of the total variability in tenderness in the reference group.
  2. *Probes for Hsp27 were determined on the basis of previously published proteomic studies whereas probes for other genes were determined on the basis of previous transciptomic studies.