Table 2.

Growth performance of growing Japanese quail as affected by licorice powder.

	Licorice levels (mg/kg diet)						P value2
Items	0	250	500	750	1000	SEM1	Linear	Quadratic
Body weight (g)
1 wk	26.28	26.33	26.17	26.27	26.18	0.204	0.7041	0.9967
3 wk	92.40	90.30	94.10	102.66	101.11	1.690	0.0003	0.3860
5 wk	177.52	179.04	191.60	201.29	191.72	1.794	<0.0001	0.0059
Daily body weight gain (g/d)
1–3 wk	4.72	4.57	4.85	5.46	5.35	0.106	<0.0001	0.3407
3–5 wk	6.08	6.34	6.96	7.05	6.47	0.039	<0.0001	<0.0001
1–5 wk	5.40	5.45	5.91	6.25	5.91	0.057	<0.0001	0.0032
Daily feed intake (g/d)
1–3 wk	15.18	15.21	13.56	14.21	14.32	0.217	0.0048	0.0199
3–5 wk	20.73	20.22	21.43	20.51	21.75	0.343	0.0690	0.3375
1–5 wk	17.95	17.71	17.49	17.36	18.03	0.258	0.8347	0.1034
Feed conversion ratio (g / g)
1–3 wk	3.21	3.33	2.80	2.60	2.68	0.078	<0.0001	0.4532
3–5 wk	3.41	3.19	3.08	2.91	3.36	0.054	0.0683	0.0001
1–5 wk	3.32	3.25	2.96	2.78	3.05	0.064	0.0006	0.0079

¹Standard error means.

²Linear and quadratic effects.