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Table 1 Description of the population in terms of the number, mean and standard deviation of phenotypes by trait and generation

From: Breeding value prediction for production traits in layer chickens using pedigree or genomic relationships in a reduced animal model

Generation   ePD eEW ePS eAH eCO eE3 eC3 eYW eSM lBW lPD lEW lPS lAH lCO lYW
  N 2,738 2,737 2,738 2,737 2,738 2,729 2,729 2,728 2,738 647 635 649 649 649 649 646
G1Training Mean 80.93 56.81 1425 7.06 73.33 43.64 74.56 15.19 149.30 1.96 77.25 61.46 1,435 6.56 72.38 17.80
  Std 11.28 4.60 38.38 0.95 7.74 4.54 7.92 1.12 7.42 0.25 12.07 4.60 24.96 0.87 7.64 1.21
  N 2,772 2,772 2,770 2,771 2,771 2,752 2,753 2,736 2,772 793 784 794 794 794 794 793
G2Training Mean 82.39 57.48 1388 7.50 71.37 46.72 74.41 15.12 156.34 1.97 80.55 62.22 1,400 7.21 66.87 17.78
  Std 11.30 4.76 39.88 1.02 8.19 5.13 7.68 1.13 9.89 0.23 12.11 4.50 40.60 0.91 9.28 1.31
  N 2,965 2,964 2,964 2,963 2,964 2,951 2,952 2,958 2,964 781 778 782 782 782 782 781
G3Training Mean 84.85 57.92 1495 7.41 76.11 47.33 75.43 15.31 159.81 1.95 82.36 63.52 1,509 7.19 72.89 18.14
  Std 9.77 4.85 42.52 1.03 7.52 4.64 7.85 1.15 6.21 0.25 11.00 4.66 36.38 0.90 7.90 1.35
  N 2,117 2,117 2,115 2,116 2,117 2,103 2,103 2,115 2,117 759 755 768 769 769 769 768
G4Training Mean 83.32 57.20 1460 7.37 77.15 45.22 78.10 15.10 147.57 1.77 80.02 62.65 1,496 6.87 70.93 18.09
  Std 10.28 4.92 42.79 0.98 7.72 4.74 7.86 1.23 7.82 0.27 11.02 4.77 36.61 0.94 8.59 1.38
  N 2,167 2,167 2,164 2,167 2,167 2,157 2,158 2,164 2,167 768 769 772 772 771 772 769
G5Training Mean 85.99 58.59 1486 8.06 78.70 47.38 79.38 15.20 155.33 1.81 82.90 62.66 1,477 7.65 72.71 17.88
  Std 9.55 4.93 46.84 1.01 8.16 4.96 7.59 1.20 8.80 0.25 10.01 4.67 36.53 0.89 9.08 1.41
  N 290 290 289 290 290 278 278 290 290 277 274 280 280 280 280 275
G5Validation Mean 83.09 59.17 1,493 7.70 78.06 45.02 80.19 15.38 148.89 1.80 77.38 63.31 1,488 7.47 71.55 17.92
  Std 9.20 4.78 41.74 1.09 7.29 4.53 7.56 1.10 7.84 0.27 11.70 4.93 35.01 0.93 8.58 1.38
  1. Early (e) traits recorded at 26-28 weeks of life: egg production (ePD); age at sexual maturity (eSM); shell quality (ePS); weight of first 3 eggs (eE3); color of first 3 eggs (eC3); egg weight (eEW); albumen height (eAH); egg color (eCO); and yolk weight (eYW); late (l) traits recorded at 42-46 weeks: body weight (lBW); egg production (lPD); egg weight (lEW); albumen height (lAH); egg color (lCO); and yolk weight (lYW)