Table 6.

Egg quality of hens during a study to evaluate SY efficacy.¹

Item	Blank control	SS control	Supplemental Se level (mg/kg of diet, SY)				SEM	Significance
			0.1	0.2	0.3	0.4
Eggshell percentage (%)	10.44	10.69	9.66	9.97	10.00	10.29	0.092	0.103
Yolk percentage (%)	23.32	22.70	22.52	22.12	22.96	22.37	0.180	0.224
Albumen percentage (%)	66.24	66.60	67.83	67.91	67.04	67.34	0.214	0.076
Eggshell strength (Kg/cm2)	4.27	4.21	3.55	4.04	4.02	4.05	0.096	0.194
Egg shape index	1.31	1.31	1.30	1.31	1.29	1.30	0.005	0.609
Eggshell thickness (mm)	0.433	0.433	0.416	0.423	0.423	0.428	0.003	0.682
Yolk color	3.83	3.33	3.75	3.50	4.00	3.42	0.082	0.132
Albumen height (mm)	6.13	5.99	6.02	5.65	5.93	5.54	0.139	0.657
Haugh Unit	77.12	76.66	76.77	73.87	77.18	74.28	1.013	0.752
Eggshell color
L	57.29	57.62	56.38	56.73	57.14	56.22	0.377	0.891
a	17.89	17.73	18.48	18.41	17.88	18.66	0.194	0.634
b	28.16	28.61	28.48	27.43	28.29	28.79	0.259	0.580

Abbreviations: Se, selenium; SS, sodium selenite; SY, Se-enriched yeast.

¹Values are means of 6 replicates per dietary treatment.