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Number of boars, average, SD, minimum, and maximum values for total feed intake during the test period (FI), lean meat, fat, live weight (LW) and slaughter percentage (SP) for Norwegian Landrace (NL) and Duroc (D)

 
No. of boars
Average
SD
Minimum
Maximum
Breed
Parameter NL D NL D NL D NL D NL D
FI, kg 8,161 7,202 152.0 157.0 29.4 29.9 97.2 80.1 270.6 258.2
Lean meat, kg 8,161 7,202 52.3 48.6 3.6 3.7 40.5 35.8 68.2 64.8
Fat, kg 8,161 7,202 15.9 19.4 4.3 4.5 7.2 8.0 33.0 35.6
LW, kg 8,161 7,202 111.8 111.5 11.8 11.8 93.9 93.4 140.7 149.2
SP, % 8,161 7,202 69.2 69.9 2.1 1.7 56.3 48.0 82.9 86.7



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Fixed regression coefficients (SE) for lean meat (βlm), fat (βfat), and accumulated metabolic BW (βamw) for Norwegian Landrace and Duroc

 
Regression coefficient Norwegian Landrace Duroc
βlm –0.027 (0.06) 0.073 (0.10)
βfat 2.241 (0.06) 2.495 (0.07)
βamw 0.050 (0.00) 0.046 (0.00)



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Variance components (SE) for the intercept of total feed intake during the test period (a), regression coefficients for lean meat in kilograms (ap) and fat in kilograms (af) for Norwegian Landrace on the diagonal and genetic correlations (SE) among a, ap, and af for Norwegian Landrace on the off-diagonal

 
a ap af
a 17.38 (1.42) 0.24 (0.06) 0.72 (0.05)
ap 0.23 (0.04) –0.17 (0.11)
af 0.26 (0.03)



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Variance components (SE) for the intercept of total feed intake during the test period (a), regression coefficients for lean meat in kilograms (ap) and fat in kilograms (af) for Duroc on the diagonal and genetic correlations (SE) among a, ap, and af for Duroc on the off-diagonal

 
a ap af
a 26.04 (2.15) 0.44 (0.05) 0.58 (0.07)
ap 0.38 (0.06) –0.24 (0.14)
af 0.17 (0.03)



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Variance components (SE) for the animal, pen, and residual for Norwegian Landrace and Duroc based on models [1] and [2]

 
Breed Model [1]
Model [2]
Norwegian Landrace Duroc Norwegian Landrace Duroc
Animal 24.93 34.19 13.69 (1.49) 21.83 (2.14)
Pen 5.66 (0.52) 5.41 (0.61) 6.49 (0.58) 5.74 (0.64)
Residual 17.83 (0.93) 23.69 (1.36) 26.18 (1.14) 33.12 (1.56)



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Fraction of total genetic variation due to lean meat and fat efficiency in Norwegian Landrace and Duroc

 
Parameter Norwegian Landrace Duroc
Fraction of total genetic variance due to lean meat efficiency 0.12 0.15
Fraction of total genetic variance due to fat efficiency 0.20 0.10