. 2023 Jul 10;101:skad239. doi: 10.1093/jas/skad239

Table 3.

Estimated marginal means from day 28 until shipment for slaughter adjusted to a base of all steers for feedlot growth performance while individual feed intake was recorded

	Treatment¹					Heifer adjustment	SEM²	P Value³
	A × B	H ET	J ET	A × H	A × J	Heifer adjustment	SEM²	Sex	Treatment
n	14	15	16	15	16
n, steers	9	6	11	7	8
n, heifers	5	9	5	8	8
Days on feed	195	196	196	193	193
Days individually fed⁴	167	168	168	165	165
Day 28 SBW, kg⁵	387^a	373^ab	346^bc	361^abc	337^c	−16	10.5	0.04	<0.01
Final SBW, kg⁵	667^a	636^a	624^a	653^a	577^b	−51	14.0	<0.01	<0.01
Average daily gain, kg	1.68^a	1.56^ab	1.68^a	1.73^a	1.46^b	−0.21	0.051	<0.01	<0.01
Daily DM intake, kg	10.58^a	9.85^ab	9.76^ab	10.09^ab	9.21^b	−0.51	0.306	0.04	0.01
Gain:feed	0.159^ab	0.159^ab	0.173^a	0.172^ab	0.159^b	−0.014	0.0043	<0.01	<0.01

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.

²Largest standard error of treatment means.

³Tested as the ANOVA significance for the main effect.

⁴Days on feed when individual intake was measured.

⁵Body weight shrunk 4%.

^a,b,cMeans without common superscript differ by pairwise comparisons with Tukey adjustment (P < 0.05).