Table 1.

Animal counts, mean phenotype and estimates of additive genetic variance and heritability by breed.

Breed	Count		Warner–Bratzler shear force (kg)
Animals1	Sires	Average	${\mathit{\sigma }}_{\mathrm{A}}^2$	h2
Angus	660 (651)	20	3.74	0.22	0.52
Charolais	702 (695)	18	4.41	0.23	0.46
Hereford	1192 (1095)	29	4.75	0.15	0.17
Limousin	285 (283)	23	4.28	0.07	0.09
Simmental	521 (516)	24	4.36	0.06	0.08
All Breeds	3360 (3240)	114	4.37	0.17	0.25

Numbers of animals with genotype call rate ≥0.85 in parentheses.