Table 3.

Effects of the combination of essential oils and organic acids on the levels of serum immunoglobulins, C3, C4, and TNF-α in weaned piglets¹

Parameter	Time (d)	Treatment			SEM2	P value
		C	T1	T2
IgA, mg/mL	14	4.94	6.25	6.45	0.25	0.11
	28	5.84	6.83	6.47	0.26	0.59
IgG, mg/mL	14	15.57	16.21	15.94	0.51	0.89
	28	16.00	16.46	16.19	0.74	0.97
IgM, mg/mL	14	7.59	8.57	7.58	0.37	0.49
	28	6.39	6.72	6.92	0.45	0.90
C3, µg/mL	14	143.50	149.41	182.20	10.08	0.25
	28	154.66	184.22	199.28	8.79	0.10
C4, µg/mL	14	166.00	197.51	213.15	12.98	0.34
	28	179.27b	228.40a	224.22a	9.35	0.05
TNF-α, ng/L	14	218.39	232.42	221.33	9.53	0.84
	28	282.34	315.73	332.81	14.41	0.37

^a,bMeans within the same raw with different superscripts differ significantly (P < 0.05).

¹C, T1, and T2 represents the piglets supplemented with basal diet (control), piglets supplemented with the mixture of essential oils and organic acids and piglets supplemented with antibiotics, respectively.

²Pooled SEM; n = 10 per treatment.