Heritabilities and Genetic Correlations

Spring 2025

Angus Trait Heritabilities (on-diagonal) and Genetic Correlations (upper off-diagonals)

Trait	CED	BW	WW	PG	DMI	YH	SC	Doc	Claw	Angle	PAP	HS	HP	CEM	Milk	MW	MH	YW	UFAT	UIMF	UREA	FAT	MARB	REA	CW
Calving ease direct (CED)	.19¹	- .65²												- .06
Birth weight direct(BW)		.46	.29	.29
Weaning direct (WW)			.28	.48	.50											.44	.48	.87	.16		.42	.07		.21	.66
Post-Weaning gain (PG)				.27	.61	.65	.28
Dry-matter intake (DMI)					.33
Yearling height (YH)						.49											.41	.68
Scrotal circumference (SC)							.48
Docility (Doc)								.44
Foot Claw Set (Claw)									.25
Foot Angle (Angle)										.25
Pulmonary arterial pressure (PAP)											.39
Hair Shed (HS)												.36
Heifer pregnancy (HP)													.15
Calving ease maternal (CEM)														.20
Maternal milk															.12
Mature weight (MW)																.35	.69
Mature height (MH)																	.59
Yearling Weight (YW)																		.42	.07		.33	- .07		.35	.75
Ultrasound Fat (UFAT)																			.45		.15	.65		- .19	.08
Ultrasound % Intramuscular Fat (UIMF)																				.41			.71
Ultrasound Ribeye Area (UREA)																					.34	-.02		.69	.38
Fat thickness (FAT)																						.39		- .35	.17
Marbling (MARB)																							.48
Rib-eye area (REA)																								.42	.42
Carcass weight (CW)																									.40

¹Heritability estimates are on the diagonal.
²Upper off-diagonals are genetic correlations among traits.

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