Table 3.

Effects of supplementation Enviva EO on egg quality parameter of laying hens.¹

Item	Enviva EO supplementation, mg/kg				SEM	P-value
	0	50	100	150
Albumen height, mm
57 wk	7.29	7.34	7.19	7.27	0.189	0.866
61 wk	7.13	7.26	7.19	7.11	0.247	0.591
65 wk	7.26	7.03	6.84	7.27	0.278	0.783
Haugh unit
57 wk	83.55	84.21	82.6	83.45	1.303	0.896
61 wk	82.26	82.76	82.26	82.24	1.714	0.871
65 wk	84.14	82.01	80.31	82.94	1.994	0.712
Egg yolk color
57 wk	7.66	8.14	7.93	7.89	0.151	0.346
61 wk	8.74	8.89	8.87	8.54	0.108	0.410
65 wk	9.03	9.24	9.14	8.90	0.102	0.254
Eggshell strength, kg/cm2
57 wk	4.65	4.26	4.11	4.37	0.204	0.653
61 wk	4.45	4.17	4.73	4.87	0.195	0.878
65 wk	4.11	4.12	4.35	4.20	0.159	0.494
Eggshell thickness, mm
57 wk	0.25	0.23	0.24	0.22	0.009	0.107
61 wk	0.26	0.25	0.26	0.28	0.009	0.136
65 wk	0.24b	0.27a	0.24b	0.28a	0.009	0.014

^a,b indicated the difference within a row was significant (P < 0.05).

¹Means of 24 eggs per treatment (3 eggs per replicate).