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 2

Effect of organic acid or organic acid supplemented with either capric acid or Bacillus Licheniformis on interleukine-1β (pg/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	900	631	877	882	902	53	0.444
9 HPC	1351	821	1075	1141	1175	85	0.438
24 HPC	1605	711	860	1359	1252	92	0.005
48 HPC	1420	774	864	1299	1024	80	0.035
96 HPC	1255	740	751	1173	914	81	0.144
168 HPC	934	769	741	959	826	55	0.678
SEM	77	57	54	64	66
P-value	0.023	0.959	0.578	0.201	0.406

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, values at different time points without a common superscript differ significantly at P < 0.05; within per time point, values with different treatments without a common superscript differ significantly at P < 0.05.