TABLE 3

Percentage of times that the correct location of the QTL was identified for various selection strategies and parameters for dichotomous phenotypes

Frequency of positive QTL alleles (%)
0.050.10≈0.20
h2 = 0.05h2 = 0.30h2 = 0.05h2 = 0.30h2 = 0.05h2 = 0.30
StrategyQTL variance:0.100.300.100.300.100.300.100.300.100.300.100.30
RAN10.314.420.336.611.816.325.049.513.319.933.562.7
STD14.1*24.631.4*50.6*17.3*27.041.2*63.5*18.933.852.6*76.0*
BAL12.718.926.250.3*13.922.239.561.6*17.829.748.671.5
DIS1015.2*32.2*34.3*52.8*18.5*35.4*43.3*60.618.636.549.3*69.8
DIS2016.9*27.430.8*49.9*17.8*33.243.5*64.9*17.937.749.6*74.1*
DIS5014.424.431.1*50.1*13.528.239.364.8*17.034.650.4*74.1*
CON513.724.419.233.416.025.620.637.516.633.523.142.3
CON1014.0*28.620.740.419.7*33.027.250.721.840.333.059.3
CON2516.3*28.0*24.042.919.8*38.4*34.157.725.6*51.5*42.168.2

Numbers in italics indicate the most precise strategy and asterisks indicate the strategies that did not differ significantly (P < 0.05) from the best strategy. RAN, random genotyping; STD, selective genotyping; BAL, genotyping equal numbers of discordant pairs per sire; DISn, discordant sib selection with n = 10, 20, or 50 half-sib families; CONn, concordant sib selection with 5, 10, or 25 high and low sires.