Table 2. Pre and post-weaning Milk Replacer (MR) intake, starter intake, total dry matter intake (DM), total crude protein intake (CP), total gross energy and water intake of heifers of control (CON) and supplemented with blend essential oils (BEO) in milk replacer during pre-weaning.

Intake	Treatment		SEM	P–value3
	CON1 (n = 15)	BEO2 (n = 14)		T	W	T x W
Pre-weaning (4 to 60 d)
MR (kg of DM/d)4	0.71 (0.705–0.721)	0.71 (0.701–0.716)	-	0.30	<0.001	<0.001
Starter (kg of DM/d)	0.30	0.31	0.02	0.92	<0.001	0.82
Total DM (kg/d)	1.00	1.16	0.06	0.58	<0.001	0.31
Total CP (kg/d)	0.19	0.19	0.01	0.58	<0.001	0.31
Total gross energy (Mcal/kg)	4.51	4.59	0.12	0.58	<0.001	0.30
Water (kg/d)	1.39	1.30	0.32	0.98	<0.001	0.64
Post-weaning (61 to 90 d)
Starter (kg of DM/d)	1.84	2.02	0.28	0.39	<0.001	0.31
Corn Silage (kg of DM/d)	0.12	0.11	0.03	0.51	<0.001	0.26
Total DM (kg/d)	1.97	2.14	0.29	0.39	<0.001	0.32
Total CP (kg/d)	0.44	0.47	0.07	0.36	<0.001	0.72
Total gross energy (Mcal/kg)	8.61	9.35	1.34	0.39	<0.001	0.29
Water (kg/d)	5.41	5.69	0.84	0.61	<0.001	0.10

¹CON = control

²BEO = 1 g/calf/d blend of essential oil.

³T = treatment effect; W = week effect, T x W = treatment by week interactions.