Table 4.
Estimated marginal means adjusted to a base of all steers for carcass characteristics of feedlot cattle after 195 ± 1.4 d on feed
| Treatment1 | Heifer adjustment | SEM2 | P Value3 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| A × B | H ET | J ET | A × H | A × J | Sex | Treatment | |||
| n | 14 | 15 | 16 | 15 | 16 | ||||
| n, steers | 9 | 6 | 11 | 7 | 8 | ||||
| n, heifers | 5 | 9 | 5 | 8 | 8 | ||||
| Slaughter age, d | 426d | 497b | 476c | 475c | 518a | −3 | 4.4 | 0.46 | <0.01 |
| HCW, kg | 422a | 417a | 401a | 416a | 359b | −33 | 8.7 | <0.01 | <0.01 |
| Dressing percentage | 63.3b | 65.8a | 64.1b | 63.6b | 61.7c | −0.1 | 0.37 | 0.66 | <0.01 |
| Longissimus muscle area, cm2 | 94.0 | 95.1 | 98.0 | 98.0 | 94.7 | −4.7 | 2.10 | 0.01 | 0.40 |
| Fat thickness, cm | 1.97a | 1.82a | 1.85a | 1.56ab | 1.36b | +0.12 | 0.131 | 0.25 | <0.01 |
| KPH fat, %4 | 2.1d | 3.2a | 2.5cd | 2.6bc | 2.9ab | +0.1 | 0.13 | 0.28 | <0.01 |
| Calculated USDA yield grade | 3.7a | 3.7a | 3.3ab | 3.2ab | 2.7b | +0.1 | 0.20 | 0.54 | <0.01 |
| Marbling score5 | 714xy | 782x | 683xy | 684xy | 661y | +30 | 36.6 | 0.31 | 0.08 |
| Abscessed livers, % | 7.3 | 26.3 | 12.9 | 33.2 | 6.2 | +2.4 | 12.1 | 0.77 | 0.20 |
1A × B was progeny of Angus bull × commercial Angus-influenced cow; H ET was progeny of Angus bull × commercial Angus-influenced cow gestated by Holstein cow; A × H was progeny of Angus bull × Holstein cow; J ET was progeny of Angus bull × commercial Angus-influenced cow gestated by Jersey cow; A × J was progeny of Angus bull × Jersey cow; H was straightbred Holstein.
2Largest standard error of treatment means.
3Tested as the ANOVA significance for the main effect.
4Kidney, pelvic, and heart fat estimated by visual observation.
5Small00 = 400, Modest00 = 500.
a,b,cMeans without common superscript differ between treatments by pairwise comparisons with Tukey adjustment (P < 0.05).
x,yMeans without common superscript differ between treatments by pairwise comparisons with Tukey adjustment (0.05 ≤ P < 0.10).