Table 5.

Total serum proteins (TSP) and health scores for calves fed milk replacer (MR) containing essential oils (EO)

Treatments1
Item	CON	EP	EPC	SEM
No. calves	20	16	20	—
TSP, g/dL	5.6	5.5	5.7	0.15
Fecal scores2, d/wk
Score = 0	4.4	4.3	4.5	0.22
Score = 1	2.1	2.1	2.0	0.19
Score = 2	0.5	0.6	0.5	0.10
Score = 3	<0.1	<0.1	<0.1	0.01
Total days of fecal scores2
Score = 0	26.5	25.9	26.8	1.09
Score = 1	12.6	12.4	12.1	0.92
Score = 2	2.9	3.7	3.1	0.57
Score = 3	<0.1	<0.1	<0.1	0.03
Nasal scores3, d/wk
Score = 0	6.9	6.9	6.9	0.03
Score = 1	0.1	0.1	0.1	0.03
Score = 2	<0.1	<0.1	<0.1	0.01
Score = 3	—	—	—	—
Total days of nasal scores3
Score = 0	41.3	41.6	41.6	0.19
Score = 1	0.7	0.4	0.4	0.18
Score = 2	0.1	0.1	0.0	0.05
Score = 3	—	—	—	—
Eye scores4, d/wk
Score = 0	6.9	6.9	6.9	0.05
Score = 1	0.1	0.1	0.1	0.05
Score = 2	<0.1	<0.1	<0.1	0.01
Score = 3	—	—	—	—
Total days of eye scores4
Score = 0	41.2	41.5	41.6	0.32
Score = 1	0.8	0.4	0.4	0.31
Score = 2	0.1	0.1	0.1	0.08
Score = 3	—	—	—	—
Ear scores5, d/wk
Score = 0	6.9	6.8	7.0	0.05*
Score = 1	0.1	0.2	<0.1	0.04*
Score = 2	0.0	0.0	<0.1	0.01
Score = 3	—	—	—	—
Total days of ear scores5
Score = 0	41.6	40.9	41.8	0.36
Score = 1	0.4	1.0	0.2	0.31
Score = 2	<0.1	<0.1	<0.1	0.07
Score = 3	—	—	—	—

¹CON = control [a 24:20% CP:fat (as-fed basis) MR without EOC]; EP = EOC mixed into the 24:20% CP:fat MR at a rate of 1.25 g/d; EPC = EOC mixed into the 24:20% CP:fat MR at a rate of 1.25 g/d in addition of two 10-mL oral doses of liquid EOC at birth and 12 h. All MR were fed at 0.28 kg 2 times per day for 14 d, then 0.43 kg 2 times per day from days 15 to 35, and then MR were fed 1 time per day from day 36 to weaning at day 42.

²Fecal score of 0 to 3; 0 = normal and ≥2 = scours.

³Nasal score of 0 to 3; 0 = normal and 3 = excessive mucopurulent discharge.

⁴Eye score of 0 to 3; 0 = normal and 3 = heavy ocular discharge.

⁵Ear score of 0 to 3; 0 = normal and 3 = droopy.

*Contrast of EP vs. EPC, P < 0.05.