Table 5.

Oxidative stress and immune parameters of nursery pigs fed diets with SPC replacing all animal protein supplements, fish meal, poultry meal, and blood plasma.

Item	NC1	PC1	RFM1	RPM1	RBP1	SEM	P-value
							NC vs. PC	NC vs. RFM	NC vs. RPM	NC vs. RBP
Jejunal mucosa
TNF-α,2 pg/mg of protein	0.32	0.30	0.42	0.34	0.37	0.06	0.788	0.240	0.835	0.526
IL-8,3 pg/mg of protein	339	339	335	313	343	39	0.993	0.929	0.589	0.938
IgA,4 μg/mg of protein	3.48	5.54	5.54	2.99	4.66	0.90	0.126	0.096	0.678	0.325
IgG,5 μg/mg of protein	2.62	2.52	3.51	2.36	3.21	0.52	0.897	0.209	0.700	0.391
MDA, nmol/mg of protein	0.86	0.83	0.74	0.91	0.68	0.11	0.810	0.397	0.746	0.219
Protein carbonyl, nmol/mg of protein	1.28	1.14	1.68	1.26	1.57	0.41	0.654	0.160	0.942	0.271

SPC = soy protein concentrate.

¹NC, PC, RFM, RPM, and RBP: basal diet without SPC (X-Soy 200, Selecta, MG, Brazil); basal diet with SPC replacing all animal protein supplements; basal diet with SPC replacing fish meal; basal diet with SPC replacing poultry meal; basal diet with SPC replacing blood plasma.

²TNF-α, tumor necrosis factor alpha.

³IL-8, interleukin 8.

⁴IgA, immunoglobulin A.

⁵IgG, immunoglobulin G.