Table 2.

Effects of plant extracts and virginiamycin on broiler growth performance¹.

	CT	VIRG	LPE	HPE	SEM	P-value
Average body weight
at 14 days (g/bird)	306.26	298.22	308.18	312.60	4.0	0.68
at 28 days (g/bird)	1076.1b	1120b	1172.7ab	1264.3a	22.0	0.01
at 42 days (g/bird)	2423	2520.7	2504.3	2536.6	20.2	0.20
Average daily gain (g/d)
Days 1–14	19	18	19	19	0.288	0.51
Days 15–28	55c	58c	60ab	68a	1.636	0.03
Days 29–42	96ab	100a	97ab	91b	1.495	0.19
Average feed intake (g/d)
Days 1–14	27	24	27	30	0.014	0.72
Days 15–28	92a	84b	86b	91c	0.031	0.02
Days 29–42	156a	134b	141b	150a	0.044	0.04
Feed to gain ratio
Days 1–14	1.46	1.38	1.30	1.36	0.060	0.68
Days 15–28	1.74a	1.44c	1.56bc	1.60b	0.050	0.001
Days 29–42	1.86a	1.65b	1.64b	1.64b	0.081	0.001

¹Each value represents the mean of six replicates. CT, basal diet (control); VIRG, basal diet supplemented with 30 mg/kg virginiamycin; LPE, basal diet supplemented with 200 mg/kg plant extracts; HPE, basal diet supplemented with 400 mg/kg plant extracts. ^a,bDifferent letters in the same row indicate significant differences between the respective means (P < 0.05)