The SNP genotype effect was analyzed with the
model that included the SNP genotype as the fixed effect for JB progeny
steers. Statistical analysis was performed by theMIXED (for JB sires) and
GLM (for JB progeny steers) procedures of SAS program (SAS Institute,
Inc., Cary, NC, USA), as described previously by Yamada et al. (2009).
P-values less than 0.05 were considered to be statistically significant.