Multi-breed genomic evaluation for tropical beef cattle when no pedigree information is available

Table 2 Variance components and heritability estimates from four multi-breed models for tropically-adapted beef heifer traits at approximately 600 days of age

	Number of records	BREEDFIXED		BREEDRANDOM			NOBREED		BAYESR
		Vg	Ve	Vg_w	Vg_b	Ve	Vg	Ve	Vg	Ve
Variance components*
Live weight (kg)	26,721	455.7 ± 19.0	1006.9 ± 14.7	444.5 ± 19.0	367.8 ± 190.4	1027.7 ± 14.7	455.5 ± 19.0	1022.8 ± 14.7	461.1 ± 19.0	1006.1 ± 16.6
Hip height (mm)	25,567	923.5 ± 33.7	1393.9 ± 23.0	960.5 ± 22.2	668.7 ± 339.8	1341.8 ± 33.2	969.4 ± 33.9	1407.2 ± 22.9	920.2 ± 30.0	1447.8 ± 26.6
Body condition score	26,794	0.03 ± 0.001	0.10 ± 0.001	0.03 ± 0.001	0.003 ± 0.003	0.10 ± 0.001	0.03 ± 0.001	0.10 ± 0.001	0.03 ± 0.001	0.10 ± 0.001
Heifer puberty	29,367	0.05 ± 0.002	0.16 ± 0.002	0.05 ± 0.002	0.02 ± 0.014	0.10 ± 0.014	0.05 ± 0.002	0.16 ± 0.002	0.05 ± 0.002	0.15 ± 0.002
Heritabilities
Live weight (kg)	26,721	0.30 ± 0.01		0.24 ± 0.03	0.20 ± 0.08		0.31 ± 0.01		0.31 ± 0.01
Hip height (mm)	25,567	0.40 ± 0.01		0.32 ± 0.04	0.23 ± 0.09		0.41 ± 0.01		0.39 ± 0.01
Body condition score	26,794	0.22 ± 0.01		0.22 ± 0.01	0.02 ± 0.02		0.22 ± 0.01		0.24 ± 0.01
Heifer puberty	29,367	0.22 ± 0.01		0.20 ± 0.02	0.10 ± 0.05		0.23 ± 0.01		0.25 ± 0.01

Variance components are the genetic vairance, Vg and Ve the error variance. In addition, the BREEDRANDOM model estimates within-breed (Vg_w) and across-breed genetic variance components (Vg_b)

ISSN: 1297-9686