Table 3.

Cumulative heifer performance in experiment 2¹

	Implant				Days on feed (DOF)					Implant × DOF
Item	SINGLE	REPEATED	SEM2	P-value	150	171	192	SEM2	P-value	P-value
n 3	1,795	1,811	—	—	1,217	1,197	1,192	—	—	—
Initial BW4, kg	337	337	0.6	0.36	338	337	336	0.8	0.07	0.88
Final BW4, kg	596	594	1.9	0.25	574c	596b	615a	2.4	0.01	0.79
ADG, kg	1.51	1.49	0.011	0.14	1.55a	1.50b	1.44c	0.014	0.01	0.81
DMI, kg	9.65	9.53	0.061	0.06	9.59	9.60	9.58	0.074	0.97	0.32
G:F	0.156	0.156	0.0013	0.99	0.162c	0.156b	0.150a	0.0016	0.01	0.84
Carcass-adjusted5
Final BW, kg	610	611	1.7	0.36	586c	611b	633a	2.1	0.01	0.25
ADG, kg	1.58	1.61	0.010	0.57	1.63a	1.58b	1.54c	0.013	0.01	0.20
G:F	0.164	0.166	0.0011	0.03	0.170c	0.165b	0.160a	0.0013	0.01	0.92

¹Treatments were: Implanted with either Revalor-XH (80 mg TBA and 8 mg E₂, uncoated; 120 mg TBA and 12 mg E₂, coated; 200 mg TBA and 20 mg E₂, total) on arrival or Revalor-IH (80 mg TBA and 8 mg E₂, uncoated) on arrival followed by Revalor-200 (200 mg TBA and 20 mg E₂, uncoated) at approximately 90 DOF and cattle harvest at 150, 171, or 192 days on feed.

²The SE of the difference between treatment means (SAS Inst. Inc., Cary, NC).

³Harvested.

⁴Shrunk 4% to account for gastrointestinal tract fill.

⁵Final BW was calculated as HCW/0.625.

^a,b,cMeans within row are different (P < 0.05).