Table 2. Effect of dietary plant-based flavonoid blend on performance traits of broilers.

Variables	Flavonoid blend (FB)1/kg diet					p-value2
	0	0.2	0.4	0.6		Overall	L	Q	C
IBW (gm)	43.34 ± 0.62	43.18 ± 0.96	43.67 ± 0.79	44.06 ± 1.00		0.63	0.71	0.26	0.66
FBW (gm)	1784b ± 49	1872 ab ± 46	1892ab ± 31	1946a ± 34		0.02	<0.01	0.53	0.42
BWG (gm)	1740b ± 49	1828 ab ± 47	1849ab ± 31	1902a ± 33		0.02	<0.01	0.53	0.42
ADG (gm)	49.73b ± 1.42	52.24ab ± 1.35	52.36ab ± 0.88	54.84a ± 1.49		0.02	<0.01	0.53	0.42
FI (gm)	3114 ± 64	3203 ± 41	3208 ± 45	3240 ± 37		0.09	0.02	0.39	0.33
FCR	1.78a ± 0.01	1.75bc ± 0.02	1.73ab ± 0.01	1.70c ± 0.01		<0.01	<0.01	0.79	0.71
CPCR	0.37a ± 0.003	0.36ab ± 0.005	0.35bc ± 0.003	0.35c ± 0.002		<0.01	<0.01	0.78	0.70
MECR	5.42a ± 0.04	5.32ab ± 0.07	5.25bc ± 0.04	5.16c ± 0.04		<0.01	<0.01	0.80	0.72

IBW: initial body weight; FBW: final body weight; BWG: body weight gain; ADG: average daily gain; FI: feed intake; FCR: feed conversion ratio; CPCR: crude protein conversion ratio; MECR: metabolizable energy conversion ratio; gm: grams; %: percentage. ¹0 FB: basal diet containing mainly corn-soya bean meal without flavonoid blend and having ME = 2982 kcal/kg & CP = 21.61% in starter and ME = 3051 kcal/kg & CP = 20.65% in grower); 0.2 FB: 0.2-gm flavonoid blend/kg diet; 0.4 FB: 0.4-gm flavonoid blend/kg diet; 0.6 FB: 0.6-gm flavonoid blend/kg diet. ²L: linear; Q: quadratic; C: cubic; values of different variables indicate as mean ± standard deviation; ^abc means values with dissimilar superscripts differ significantly (p < 0.05).