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Table 1 Descriptive statistics (averages, with standard deviations in parentheses) of total (IgTotal), IgM, and IgG KLH-binding natural antibody titers in a White Leghorn chicken population divergently selected for IgTotal, resulting in a High and a Low line

From: Divergent selection for natural antibodies in poultry in the presence of a major gene

Generation IgM IgG IgTotal Na
Low High H-Lb Low High H-Lb Low High H-Lb
Base 7.10(1.43)   0.00 6.16(1.57)   0.00 6.89(1.51)   0.00 4855
G1 6.11(0.97) 6.61(1.01) 0.50 5.81(1.37) 6.27(1.28) 0.46 5.89(1.33) 6.38(1.21) 0.49 946
G2 5.75(0.91) 6.68(0.85) 0.93 5.17(1.37) 5.99(1.34) 0.82 5.17(1.39) 6.36(1.28) 1.19 820
G3 5.21(0.98) 6.40(0.84) 1.19 4.96(1.78) 5.84(1.49) 0.88 6.77(1.84) 8.11(1.60) 1.34 526
G4 4.33(1.10) 6.11(0.91) 1.78 4.39(1.60) 6.03(1.37) 1.64 4.26(1.58) 6.36(1.29) 2.10 915
G5 4.90(1.20) 6.69(0.88) 1.79 4.76(1.66) 6.52(1.43) 1.76 4.57(1.72) 6.59(1.30) 2.02 1135
G6 3.61(1.16) 6.32(1.02) 2.71 4.41(1.88) 6.70(1.55) 2.29 5.50(1.40) 7.50(0.95) 2.00 707
G7 3.62(1.44) 6.55(0.99) 2.93 3.77(1.49) 6.14(1.01) 2.37 3.32(1.45) 5.96(1.02) 2.64 974
Total           10,878
  1. aNumber of observations for IgTotal; the numbers of records for IgM and IgG differ slightly from those for IgTotal
  2. bAll differences between the High and Low selection lines are significant from G1 onwards, when tested based on a two-sided t-test