TABLE 3.

Effect of dietary 5-hydroxytryptophan (0.2%, 5-HTP) on growth performance of broilers.

	Control	5-HTP	Significance
Initial body weight at 7-day age, g	141.2 ± 5.37	139.0 ± 6.61	NS
Feed intake, g/d
8–21 days	55.8 ± 0.92	52.5 ± 1.64	NS
22–35 days	128.5 ± 1.66	124.5 ± 2.87	NS
8–35 days	92.2 ± 0.73a	88.5 ± 1.25b	0.033
Body weight gain, g/d
8–21 days	39.9 ± 1.23	36.3 ± 0.64	0.050
22–35 days	75.9 ± 1.55	73.7 ± 1.58	NS
8–35 days	57.9 ± 0.80	55.0 ± 1.02	0.057
FCR, g/g
8–21 days	1.40 ± 0.02	1.44 ± 0.02	NS
22–35 days	1.70 ± 0.04	1.69 ± 0.05	NS
8–35 days	1.59 ± 0.02	1.61 ± 0.03	NS

Values were presented as Mean ± SEM (n = 4); ^a,bP < 0.05; NS, not significant.