. 2020 Jan 8;9(1):68. doi: 10.3390/foods9010068

Table 4.

Effects of dietary supplementation of different selenium sources and levels on egg selenium content of laying hens.

Parameters.	Basal Diet	SY-L	SY-H	SS-L	SS-H	P-Values
Parameters.	Basal Diet	SY-L	SY-H	SS-L	SS-H	S	L	S × L
Se content, mg/kg	0.2683 ± 0.0593 ^A	0.4920 ± 0.0171 ^B	0.6491 ± 0.0142 ^C	0.4780 ± 0.0257 ^B	0.5107 ± 0.0120 ^B	0.009	<0.001	<0.001

Note: SY-L, 0.3 mg/kg selenium yeast; SY-H, 0.5 mg/kg selenium yeast; SS-L, 0.3 mg/kg sodium selenium; SS-H, 0.5 mg/kg sodium selenium; S, selenium sources; L, selenium levels; S × L, the interaction of selenium sources and levels. In the same row, means without letters or with the same superscripts are not significantly different (P > 0.05), while means with different superscripts mean significantly different (P < 0.05).