Accuracy of direct genomic breeding values for nationally evaluated traits in US Limousin and Simmental beef cattle

Table 6 The reliabilities of parent average and the efficiency of selection on DGV versus parent average

Trait	Limousin (Genotyped animals)		Simmental (Genotyped animals)		Simmental (Young animals)¹
	R _PA ²	Efficiency	R _PA ²	Efficiency	R _PA ²	Efficiency
Birth weight	0.42	0.89	0.37	1.06	0.37	1.08
Calving ease direct	0.41	0.81	0.36	0.75	0.33	0.78
Calving ease maternal	0.41	0.80	0.34	0.55	0.28	0.60
Carcass weight	0.39	0.89	0.31	1.07	0.28	1.11
Docility	0.35	0.68	-	-	-	-
Fat thickness	-	-	0.33	0.51	0.22	0.62
Marbling	0.38	1.05	0.33	1.10	0.20	1.41
Rib eye muscle area	0.38	1.02	0.32	1.05	0.19	1.35
Scrotal circumference	0.32	0.80	-	-	-	-
Shear force	-	-	0.14	1.44	0.07	2.04
Stayability	0.32	0.69	0.17	1.39	0.15	1.48
Weaning weight direct	0.40	0.92	0.35	0.87	0.33	0.91
Weaning weight maternal	0.39	0.74	0.35	0.57	0.28	0.64
Yield grade	0.38	1.08	0.28	1.17	0.20	1.40
Yearling weight	0.36	1.28	0.36	0.75	0.32	0.79

¹Non-genotyped purebred Simmental animals that were born after January 2012 (overall 323 animals).

ISSN: 1297-9686