Table 4.

Description of pedigree size for all 2-trait analyses with heifer pregnancy or stayability in Red Angus cattle

Trait	Heifer pregnancy models			Stayability models
	Total pedigree size	Number of unique sires	Number of unique dams	Total pedigree size	Number of unique sires	Number of unique dams
Birth weight	248,082	17,104	111,258	251,696	14,741	104,226
Preweaning gain	236,506	16,697	107,216	235,885	14,472	99,878
Weaning Weight	236,507	15,378	107,216	235,877	14,472	99,874
Postweaning gain	190,981	15,428	91,569	186,017	13,442	86,313
Yearling weight	192,849	12,354	92,324	186,017	13,433	86,313
Scrotal circumference	117,314	11,655	63,626	120,611	11,764	65,710
Rib eye area	90,960	11,655	53,716	102,714	11,456	59,350
Backfat	90,933	11,653	53,723	120,760	11,457	59,361
Marbling	90,791	11,656	53,689	102,439	11,455	59,243
Hot carcass weight	91,000	12,536	53,726	102,764	11,457	59,362
Ultrasound rib eye area	128,833	12,536	67,806	126,816	11,861	67,436
Ultrasound backfat	128,881	12,536	67,826	126,855	11,861	67,451
Ultrasound intramuscular fat	128,834	12,536	67,809	126,744	11,861	67,420
Teat score				101,721	11,487	59,172
Suspension score				101,721	11,487	59,172
Mature weight				103,934	11,528	60,186
Body condition score				103,934	11,528	60,186