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Table 4 QTL significant at the genome-wide level in a Hampshire x Landrace cross.

From: Genome-wide identification of quantitative trait loci in a cross between Hampshire and Landrace II: Meat quality traits

   Position 95% CI   Additive Dominance   
Chromosome/Trait n (cM) (cM) F-value effect ± SE effect ± SE % Var Model
SSC3         
Protein content in LD 175 156 116–172 9.1* 0.4 ± 0.1 0.3 ± 0.2 10.1 HSRNT
SSC6         
Water content in LD 175 51 13–147 9.5* 0.4 ± 0.1 -0.3 ± 0.2 10.5 HSRNT
Drip loss in LD day 3–7 (4 days) 268 69 16–178 9.3* 0.6 ± 0.1 0.3 ± 0.2 6.9 HSRNT
ΔpH/h in LD 45 min to 3 h p.m. 279 61 0–89 9.0* 0.05 ± 0.01 0.01 ± 0.02 6.4 HSRNT
Chewing resistance 53 119 0–133 12.3* 9.9 ± 3.5 -25.1 ± 5.2 36.9 HRNT
Tenderness 53 119 0–131 11.0* -11.3 ± 4.6 31.3 ± 6.8 34.4 HRNT
Chewing time 53 119 0–135 11.0* 8.8 ± 3.1 -20.5 ± 4.6 34.4 HRNT
SSC16         
Freezing and cooking loss in LD 289 41 25–78 9.6* -0.0 ± 0.2 -1.2 ± 0.3 6.5 HSRNT
  1. *5% genome-wide significance
  2. LD – M. longissimus dorsi
  3. p.m.-post mortem
  4. CI – confidence interval
  5. The additive effect was defined as the estimated phenotypic difference between animals homozygous for the Hampshire allele and the mean of the two homozygotes.
  6. The dominance effect was calculated as the phenotypic deviation of the heterozygotes from the mean of the two homozygotes
  7. Var – residual variance explained by the QTL.
  8. Model: H = Herd, S = Sex, RN = PRKAG3/RN-genotype, T = Stunning procedure.