Table 7.

Effects of NCCC supplementation on serum immune factor of yellow-feathered broilers¹

Items2	Groups3				SEM	P-value
	CON	N50	N100	N200		Diet	Linear	Quadratic
IFN-γ, pg/mL	55.94	56.82	57.02	56.89	0.248	0.396	0.158	0.217
TNF-α, pg/mL	50.36	51.50	50.73	51.56	0.318	0.513	0.337	0.637
IL-2, pg/mL	246.58	246.32	247.98	266.23	4.412	0.326	0.128	0.181
IL-4, pg/mL	116.79	117.91	122.50	133.01	2.484	0.069	0.012	0.026
IL-10, pg/mL	46.64c	59.69b	57.23b	65.52a	1.728	<0.001	<0.001	<0.001

¹ n = 5.

²INF-γ, interferon-γ; TNF-α, tumor necrosis factor-α; IL-2, interleukin-2; IL-4, interleukin-4; IL-10, interleukin-10.

³Group CON: basal diet; Group N50: basal diet added with 50 mg/kg nano-composite of copper and carbon (NCCC); Group N100: basal diet added with 100 mg/kg NCCC; Group N200: basal diet added with 200 mg/kg NCCC.

^a-cMeans in the same row without the same superscript differ significantly (P < 0.05).