Table 8.

Effect of fenugreek seed extract on serum cytokine content in broilers¹.

Items	Basic fodder	Bacitracin zinc	FSE(mg/kg)					P -value
			50	100	200	400	800	ANOVA	Linear	Quadratic
IL-1	165.13 ± 31.55ab	130.40 ± 11.92b	165.86 ± 34.18ab	157.43 ± 44.24ab	194.5 ± 30.33a	180.05 ± 30.87a	150.82 ± 34.84ab	0.05	0.23	0.34
IL-2	219.35 ± 20.22	233.53 ± 40.68	228.48 ± 20.48	233.12 ± 23.16	230.87 ± 35.16	211.87 ± 34.58	224.67 ± 38.22	0.88	0.70	0.70
IL-6	19.25 ± 4.00	18.77 ± 4.06	16.36 ± 3.15	14.56 ± 2.36	16.75 ± 4.45	14.76 ± 4.91	18.54 ± 4.57	0.26	0.28	0.07
IL-10	53.88 ± 5.33ab	52.01 ± 4.95b	50.63 ± 3.85b	57.28 ± 5.88ab	57.84 ± 4.68ab	59.51 ± 6.24a	52.46 ± 4.75b	0.03	0.17	0.22
IFN-γ	50.20 ± 9.89bc	45.52 ± 8.33c	53.67 ± 8.62bc	62.23 ± 6.90a	59.50 ± 7.19ab	51.92 ± 3.88bc	55.58 ± 6.37bc	0.01	0.07	0.03
TNF-α	47.30 ± 4.16	46.35 ± 7.41	40.17 ± 7.62	38.01 ± 6.79	36.67 ± 7.68	43.31 ± 8.73	48.99 ± 14.39	0.11	0.82	0.01

Different lowercase letters with the same column date meant significant difference (P ≤ 0.05).

¹ Each value represents the mean of 6 replicate pens.