TABLE 3

Estimates of QTL allele effects, nontruncation selection

Estimate of α
Gen (%)MGLRML
Simulated value = 0.0
1000.001 ± 0.0020.002 ± 0.0070.002 ± 0.004
500.000 ± 0.003– 0.000 ± 0.0070.000 ± 0.004
10–0.006 ± 0.005–0.008 ± 0.014– 0.006 ± 0.006
Simulated value = 0.1
1000.080 ± 0.0020.101 ± 0.0070.146 ± 0.004
500.099 ± 0.0030.098 ± 0.0070.108 ± 0.004
100.095 ± 0.0060.103 ± 0.0180.098 ± 0.006
Simulated value = 0.2
1000.160 ± 0.0030.200 ± 0.0060.279 ± 0.004
500.199 ± 0.0030.201 ± 0.0070.215 ± 0.003
100.197 ± 0.0060.247 ± 0.0190.206 ± 0.006
Simulated value = 0.5
1000.398 ± 0.0070.501 ± 0.0040.585 ± 0.003
500.489 ± 0.0030.506 ± 0.0050.512 ± 0.003
100.421 ± 0.0030.631 ± 0.0190.516 ± 0.006

Estimates are means and standard errors of 100 replicates, where Gen refers to the percentage of animals genotyped. Estimation methods were those of Muranty and Goffinet (1997; MG). LR, logistic regression; ML, maximum likelihood. Fifty percent of markers were informative, with the ratio of identifiable alleles being 10:90%.