Immune Response of Piglets Receiving Mixture of Formic and Propionic Acid Alone or with Either Capric Acid or Bacillus Licheniformis after Escherichia coli Challenge

Table 6

Effect of organic acid or organic acid supplemented with either capric acid or Bacillus Licheniformis on Immunoglobulin G (μg/mL) concentration in plasma of pigs challenged with enterotoxigenic Escherichia coli.

Time, h	Treatments					SEM	P-value
	CON	ATB	OA	OA+ CRA	OA + PB
0 HPC^1	1210	1373	1461	1219	1569	104	0.801
9 HPC	1544	1643	1683	1458	1487	137	0.985
24 HPC	1651	1414	1714	1604	1726	98	0.871
48 HPC	1867	1450	1414	1741	1887	121	0.625
96 HPC	2723	1798	1899	2072	2131	111	0.099
168 HPC	2482	2039	2080	2290	2196	104	0.743
SEM	174	104	86	92	123
P-value	0.061	0.408	0.198	0.001	0.479

CON = basal diet; ATB = basal diet plus antibiotics; OA = basal diet plus 1% organic acid; OA + CRA = basal diet plus 1% organic acid + 0.2% capric; OA + PB = basal diet plus 1% organic acid + 0.02% probiotic (3.3×10⁶ viable spores of Bacillus Licheniformis per gram of feed).
¹ HPC: hours after challenge.
Within per treatment, value at different time points without a common superscript differs(P<0.05); within per time point, value with different treatments without a common superscript differs (P<0.05).