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Abstract
Residual Maximum Likelihood and Bayesian methods for statistical gene mapping in livestock were derived and applied to simulated half‐sib designs. REML was robust to the number of QTL alleles, and Bayesian analysis permitted to fit different QTL models. Single QTLs explaining at least 12.5% of additive genetic variance were detected with power of .5 or higher. Two linked QTLs were detected when 20cM (40cM) apart and jointly accounting for 50% (25%) of additive genetic variance.