Table 6.

Effects of dietary Lycium barbarum polysaccharides on serum concentrations of IgG, IgA, and IgM in broiler chickens at 42 D of age.¹

Items	LBP levels (mg/kg of feed)				SEM	P-value
	0	1,000	2,000	4,000		Linear	Quadratic
IgA (mg/mL)	0.384b	0.481a	0.489a	0.475a	0.008	0.002	0.016
IgG (mg/mL)	0.749b	0.798a	0.889a	0.794a	0.003	0.004	0.029
IgM (mg/mL)	2.102	2.283	2.314	2.356	0.005	0.113	0.247

^a,b Means within a row with no common superscript letters differ significantly (P < 0.05).

Abbreviations: Ig, immunoglobulin; LBP, Lycium barbarum polysaccharides

¹Data are means collected from 8 birds from each treatment (1 bird per replicate).