Table 2.

Effects of natural capsicum extract on growth performance of broilers.

Items	CON	CTC	NCE	SEM	P-value
Period 1 (d 1–21)
Initial body weight (g)	46.66	46.30	46.22	0.58	0.85
Final body weight (g)	609.11b	608.78b	658.72a	12.95	0.03
Average daily weight gain (g)	27.24b	27.06b	29.36a	0.56	0.03
Average daily feed intake (g)	36.13	36.05	37.61	0.62	0.19
Feed-to-gain ratio (g/g)	1.33	1.34	1.28	0.03	0.42
Period 2 (d 22–42)
Initial body weight (g)	609.11b	608.78b	658.72a	12.95	0.03
Final body weight (g)	1924.91b	1980.10b	2083.04a	26.24	< 0.01
Average daily weight gain (g)	67.74b	71.04ab	73.22a	1.35	0.04
Average daily feed intake (g)	103.31	106.10	108.97	3.00	0.44
Feed-to-gain ratio (g/g)	1.50	1.50	1.49	0.04	0.99
Overall period (d 1–42)
Average daily weight gain (g)	45.81b	47.53ab	49.69a	0.74	< 0.01
Average daily feed intake (g)	68.90	70.22	72.42	1.59	0.33
Feed-to-gain ratio (g/g)	1.50	1.48	1.46	0.04	0.69

^abValues with different superscripts within the same row indicate a significant difference at P < 0.05.

Abbreviations: CON, control; CTC, antibiotic (chlortetracycline); NCE, natural capsicum extract; SEM, pooled standard error of the means.