Table 2.

Effect of green tea powder and feeding time on egg quality.

Treatment	Feeding time	Egg weight/g	Egg specific gravity g/cm3	Egg shape index	Eggshell strength/N	Egg yolk/g	Eggshell thickness/mm	Albumin height/mm	Yolk color	Haugh unit	Cholesterol mg/egg
Con	0	32.08	1.131	1.303	39.62	8.45	0.348	2.45	4.7	59.20	157.9
	2	31.94	1.129	1.356	34.51	8.56	0.347	2.87	7.1	62.41	232.8
	4	38.57	1.128	1.303	43.97	10.95	0.374	3.10	7.7	61.30	191.9
	6	43.18	1.129	1.297	42.16	12.13	0.372	3.57	8.2	61.89	197.3
	8	44.49	1.126	1.258	37.96	12.72	0.376	4.00	8.0	70.28	213.9
	10	47.77	1.124	1.307	44.64	13.81	0.395	4.10	8.5	67.91	169.5
	12	46.89	1.132	1.297	47.14	14.32	0.405	4.28	7.4	67.50	164.1
GTP	0	30.39	1.130	1.324	38.00	7.67	0.346	3.14	5.3	66.59	167.6
	2	33.32	1.130	1.345	35.43	10.00	0.353	2.73	7.1	59.51	189.92
	4	36.811	1.1202	1.315	33.202	10.52	0.3282	3.35	7.7	64.33	146.72
	6	42.39	1.1192	1.279	32.772	12.11	0.3472	3.83	7.01	65.12	161.42
	8	44.74	1.1132	1.278	34.86	13.20	0.362	5.32	7.6	77.922	159.42
	10	43.641	1.124	1.320	42.12	12.822	0.3742	4.891	7.81	75.351	149.41
	12	48.13	1.129	1.315	38.681	14.40	0.3812	4.991	7.2	73.651	141.32
SEM		0.952	0.001	0.015	1.425	0.197	0.004	0.179	0.241	1.672	4.576
P-value
Treatment		0.266	<0.01	0.38	<0.01	0.834	<0.01	<0.01	0.166	<0.01	<0.01
Feeding time	ANOVA	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01
	Linear	<0.001	<0.001	<0.001	0.64	<0.001	0.71	0.005	<0.001	0.03	0.131
	Quadratic	0.004	<0.001	0.005	0.1	<0.001	0.055	0.28	<0.001	0.55	0.005
Treatment × feeding time		<0.01	<0.01	0.775	0.002	0.001	0.005	0.131	0.401	0.316	0.005

Abbreviations: Con, control; GTP, green tea powder.

¹Significant differences among groups (P < 0.05).

²Significant differences among groups (P < 0.01).