Table 7.

Effects of dietary seaweed-derived polysaccharides (SDP) on the immune responses of weaned pigs (Exp. 2)

Items	Dietary treatment		P-value
	CON	SDP
Serum
IgG, g/L	19.63 ± 0.86	21.98 ± 0.78	0.090
IgA, g/L	1.25 ± 0.09	1.30 ± 0.05	0.653
IgM, g/L	2.34 ± 0.04	2.39 ± 0.06	0.540
IL-6, pg/mL	127.14 ± 4.98	159.31 ± 7.35	0.003
IL-10, pg/mL	14.65 ± 2.47	17.36 ± 1.23	0.342
IL-1β, pg/mL	31.68 ± 3.32	33.48 ± 2.28	0.662
TNF-α, pg/mL	57.61 ± 3.90	70.76 ± 4.56	0.046
Mucosal sIgA, mg/g protein
Duodenum	3.35 ± 0.66	5.56 ± 0.74	0.043
Jejunum	4.78 ± 0.50	8.14 ± 0.53	< 0.001
Ileum	5.68 ± 0.46	9.04 ± 0.61	0.001

IgG immunoglobulin G; IgA immunoglobulin A; IgM immunoglobulin M; IL-6 interleukin-6; IL-10 interleukin-10; IL-1β interleukin-1β; TNF-α tumour necrosis factor-α; sIgA secretory immunoglobulin A

n = 8 for each group