Table 4.

BW, BW gain, and ADG for calves fed a CS without or with MON, or EOC, or a combination of both MON and EOC (MON × EOC)

	Treatments1					Main effects & interaction, P-value < 2
Measurement	CS	MON	EOC	MON + EOC	SEM	MON	EOC	MON × EOC
N	20	20	20	20	—	—	—	—
BW, kg
0 d	44.7	44.7	44.8	44.7	0.84
14 d	52.5	52.0	53.5	53.4	0.84
28 d	60.5	60.3	63.3	63.4	0.84
42 d	70.3	70.2	74.0	74.4	0.84
56 d	81.3	81.7	85.9	86.8	0.84
70 d	94.0	94.9	100.0	100.8	0.84
Average, 0 to 70 d	67.2	77.3	70.2	70.6	0.76	0.70	0.01	0.81
BW gain, 0 to 70 d	49.4	50.7	55.2	58.0	1.22	0.36	0.01	0.41
ADG, kg/d
0 to 14 d	0.55	0.52	0.63	0.62	0.02
15 to 28 d	0.58	0.59	0.70	0.71	0.02
29 to 42 d	0.70	0.71	0.76	0.79	0.02
43 to 56 d	0.79	0.82	0.85	0.89	0.02
57 to 70 d	0.91	0.94	1.01	1.00	0.02
Average, 0 to 70 d	0.70	0.72	0.79	0.80	0.02	0.38	0.01	1.00
ADG, BW gain/70 d	0.83	0.85	0.93	0.97	0.02	0.47	0.01	0.78

¹CS, calf starter; MON, CS containing monensin; EOC, CS containing essential oil and cobalt; MON+EOC, CS containing monensin, essential oils and cobalt.

² P-value for main effects of MON or EOC and interaction.