Table 3.

Estimates of variance components and heritability for ultrasound measurements and carcass measurements from Hanwoo steers by multiple trait analysis

Traits1	σA22	σ E2	h2
UBF	6.77±1.27	8.84±0.914	0.43±0.07
ULMA	7.57±1.75	40.15±1.463	0.16±0.04
UMS	0.63±0.11	1.25±0.081	0.33±0.05
CW	894.06±154.58	909.96±109.83	0.50±0.07
BF	8.23±1.64	12.62±1.19	0.39±0.07
LMA	31.85±5.80	48.51±4.20	0.40±0.06
MS	1.87±0.28	1.48±0.20	0.56±0.07

¹UBF = Ultrasound backfat thickness; ULMA = Ultrasound longissimus muscle area; UMS = Ultrasound marbling score; CW = Carcass weight; BF = Backfat thickness; LMA = Longissimus muscle area; MS = Marbling score.

²σ_A² = Additive genetic variance; σ_E² = Residual variance; h² = Heritability.