Table 6.

Feed efficiency of milk plus CS DMI into BW gain for calves fed a CS without or with MON, or EOC, or a combination of both MON and EOC (MON × EOC)

	Treatment1					Main effects & interaction, P-value < 2
Measurement	CS	MON	EOC	MON + EOC	SEM	MON	EOC	MON × EOC
N	20	20	20	20	—-	—	—	—
Feed conversion, kg BW/kg DMI
0 to 14 d	0.77	0.72	0.84	0.82	0.03
15 to 28 d	0.49	0.49	0.56	0.54	0.03
29 to 42 d	0.33	0.33	0.40	0.36	0.03
43 to 56 d	0.25	0.25	0.26	0.27	0.03
57 to 70 d	0.20	0.23	0.21	0.21	0.03
Average, 0 to 70 d	0.41	0.40	0.45	0.45	0.01	0.69	0.01	0.91
Total BW gain/ total feed intake, kg/kg	0.49	0.51	0.54	0.57	0.01	0.02	0.01	0.50

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.