Table 10.

Blood TSP and immunoglobulin concentrations of calves fed a CS without or with MON, or EOC, or 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	—	—	—	—
TSP, g/L
Day 0	47.9	46.9	48.2	48.7	0.53
Day 2	50.4	50.1	50.8	51.3	0.53
Day 14	51.8	50.9	51.7	52.7	0.53
Day 28	53.8	53.8	55.1	55.6	0.53
Day 42	56.1	56.2	58.1	59.4	0.53
Day 56	59.7	61.6	63.1	64.1	0.53
Day 70	62.1	65.4	68.0	69.4	0.53
Average, 0 to 70 d	54.6	56.1	56.2	56.3	0.44	0.44	0.01	0.61
IgG, mg/dL
Day 0	100.6	99.5	101.0	100.1	5.00
Day 2	114.9	114.4	112.3	112.2	5.00
Day 14	104.2	108.1	107.6	106.4	5.00
Day 28	93.5	95.9	96.2	98.5	5.00
Day 42	105.7	110.1	112.9	115.7	5.00
Day 56	118.4	126.0	133.0	133.5	5.00
Day 70	134.8	143.2	153.4	155.6	5.00
Average 0 to 70 d	110.1	110.8	116.8	117.8	4.10	0.82	0.02	0.96
IgA, mg/dL
Day 0	4.3	4.5	4.6	4.5	1.91
Day 2	12.8	12.6	14.1	13.1	1.91
Day 14	8.5	9.9	11.6	10.9	1.91
Day 28	4.6	5.0	6.0	5.8	1.91
Day 42	7.4	8.4	12.4	11.9	1.91
Day 56	14.0	14.5	21.8	19.3	1.91
Day 70	16.5	17.4	27.7	27.6	1.91
Average, 0 to 70 d	9.7	10.3	14.1	13.2	1.51	0.93	0.01	0.50
IgM, mg/dL
Day 0	6.2	5.8	6.6	6.2	1.25
Day 2	15.2	15.4	16.5	15.7	1.25
Day 14	8.3	7.8	8.8	8.8	1.25
Day 28	5.9	5.2	8.3	8.5	1.25
Day 42	8.8	9.2	13.0	12.3	1.25
Day 56	12.0	10.4	15.3	15.1	1.25
Day 70	15.9	16.9	27.6	22.2	1.25
Average 0 to 70 d	10.4	11.5	12.5	12.5	0.85	0.46	0.04	0.46

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; A significant EOC * Day was found for TP, IgG, IgA, and IgM, P < 0.01.