Table 3.

Heritabilities for commonly measured semen quality traits

Traits	n	Estimate	Standard Error	Breed	Source
Spermatozoa motility	717	0.13	0.06	Angus	Knights et al. (1984)
	549	0.08	0.07	Hereford, Angus, & Red Angus	Smith et al. (1989)
	2,387	0.30	0.09	Normande	Ducrocq and Humblot (1995)
	198	0.31	*	Holstein	Mathevon et al. (1998)
	1,282	0.07	*	Angus	Christmas et al. (2001)
	974	0.18	0.03	Lacaune Rams	David et al. (2006)
	841	0.22	0.09	Line 1 Hereford	Kealey et al. (2006)
	515	0.43	0.08	Holstein	Druet et al. (2009)
	1,281	0.05	0.03	Angus	Garmyn et al. (2011)
	2,424	0.15	0.05	Tropical Composite	Corbet et al. (2013)
	1,212	0.31	0.06	Holstein	Suchocki and Syzda, 2015
	787	0.37	0.03	Beef & Dairy	Berry et al. (2019)
Progressive motility	515	0.13	0.13	Holstein	Druet et al. (2009)
	2,424	0.15	0.05	Tropical Composite	Corbet et al. (2013)
Motility score	2,387	0.23	0.08	Normande	Ducrocq and Humblot (1995)
	301	0.04	0.01	Beef/ Dairy Cross	Gredler et al. (2007)
	1,212	0.26	0.05	Holstein	Suchocki and Syzda, 2015
Mass activity	2,424	0.13	0.05	Tropical Composite	Corbet et al. (2013)
Percentage of living spermatozoa after thawing	841	0.22	0.09	Line 1 Hereford	Kealey et al. (2006)
	515	0.21	0.08	Holstein	Druet et al. (2009)
	787	0.25	0.08	Beef & Dairy	Berry et al. (2019)
Percent normal spermatozoa	549	0.07	0.06	Hereford, Angus & Red Angus	Smith et al. (1989)
	765	0.47	0.07	Angus	Yilmaz et al. (2004)
	841	0.35	0.10	Line 1 Hereford	Kealey et al. (2006)
	301	0.10	0.03	Beef/Dairy Cross	Gredler et al. (2007)
	2,424	0.41	0.10	Tropical Composite	Corbet et al. (2013)
Abnormal spermatozoa percentage/ Total abnormalities	2,387	0.19	0.07	Normande	Ducrocq and Humblot (1995)
	1,282	0.29	*	Angus	Christmas et al. (2001)
	515	0.25	0.10	Holstein	Druet et al. (2009)
	—	0.15	0.01	Nellore	Silva et al. (2011)
	1,281	0.25	0.07	Angus	Garmyn et al. (2011)
Primary abnormalities	549	0.31	0.09	Hereford, Angus, & Red Angus	Smith et al. (1989)
	1,282	0.35	*	Angus	Christmas et al. (2001)
	841	0.30	0.10	Line 1 Hereford	Kealey et al. (2006)
	1,281	0.27	0.07	Angus	Garmyn et al. (2011)
Secondary abnormalities	549	0.02	0.05	Hereford, Angus, & Red Angus	Smith et al. (1989)
	1,282	0.26	*	Angus	Christmas et al. (2001)
	841	0.33	0.09	Line 1 Hereford	Kealey et al. (2006)
	1,281	0.23	0.08	Angus	Garmyn et al. (2011)
Percentage of spermatozoa with abnormal head	515	0.35	0.12	Holstein	Druet et al. (2009)
Percentage of spermatozoa with abnormal tail	515	0.19	0.12	Holstein	Druet et al. (2009)
Percentage of spermatozoa with abnormal cytoplasmic droplet	515	0.19	0.08	Holstein	Druet et al. (2009)

*No standard error reported; n = number of bulls.