Table 4.

Effect of quercetin on serum biochemical parameters in broilers.

Items	Control	0.02% quercetin	0.04% quercetin	0.06% quercetin	P
TG (mg/dl)	0.68 ± 0.03A	0.60 ± 0.03AB	0.54 ± 0.03BC	0.50 ± 0.03C	0.003
LDL (mg/dl)	14.5 ± 1.03a	12.4 ± 1.39ab	9.65 ± 1.05b	9.56 ± 0.99b	0.014
HDL (mg/dl)	1.76 ± 0.16	1.69 ± 0.18	2.08 ± 0.16	1.99 ± 0.15	0.298
TC (mg/dl)	4.51 ± 0.19A	3.76 ± 0.31AB	3.33 ± 0.25B	3.36 ± 0.73B	0.008
Leptin (ng/ml)	12.47 ± 0.20A	10.47 ± 0.19B	14.23 ± 0.26aC	15.01 ± 0.20bC	0.000
Adiponectin (mg/ml)	95.44 ± 4.37A	94.55 ± 1.68A	109.48 ± 4.47B	111.02 ± 3.99B	0.004

Note: in the same row, values with different small letter superscripts mean significant difference (P < 0.05); Values with different capital letter superscripts mean significant difference (P < 0.01); Values with no letter or the same letter superscripts mean no significant difference (P > 0.05). Values are expressed as mean ± SEM, and n = 6 for all groups.