Table 3.

Effects of dietary quercetin on growth performance of broiler chickens fed with oxidized oil.

Item		Treatment1						P-value, t-test	Linear	Quadratic	P-value
		Ctr	Ox	OxL	OxM	OxH	SEM
1–21 D	FI,2 g/bird	1,123	1,124	1,141	1,124	1,152	9.7	0.961	0.460	0.783	0.765
	BWG,3 g/bird	802	795	783	779	785	4.3	0.659	0.571	0.320	0.716
	FCR,4 g/g	1.40	1.41	1.46	1.44	1.47	0.012	0.656	0.275	0.704	0.587
21–42 D	FI, g/bird	2.63	2.70	2.66	2.80	2.70	0.023	0.350	0.619	0.288	0.220
	BWG, g/bird	1,800	1,820	1,770	1,840	1,790	13.0	0.592	0.719	0.821	0.402
	FCR, g/g	1.46	1.48	1.50	1.53	1.51	0.008	0.498	0.125	0.126	0.181
1–42 D	FI, g/bird	3,750	3,840	3,770	3,910	3,850	23.0	0.189	0.536	0.663	0.350
	BWG, g/bird	2,600	2,620	2,550	2,610	2,570	15.0	0.745	0.619	0.904	0.490
	FCR, g/g	1.44	1.47	1.48	1.50	1.50	0.006	0.170	0.056	0.333	0.197
	Mortality, %	1.04	3.12	0.00	1.04	1.04

Means within 4 treatments (Ox, OxL, OxM, and OxH) lacking a common superscript differ (P < 0.05).

Abbreviation: Ctr, control group.

¹Ctr: basal diet; Ox: basal diet with oxidized oil; OxL: basal diet supplemented with oxidized oil and 200 ppm of quercetin; OxM: basal diet supplemented with oxidized oil and 400 ppm of quercetin; OxH: basal diet supplemented with oxidized oil and 800 ppm of quercetin.

²FI: feed intake, g/bird.

³BWG: body weight gain, g/bird.

⁴FCR: feed conversion ratio.