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. 2021 Apr 9;17:151. doi: 10.1186/s12917-021-02855-4

Table 3.

Effects of dietary selenium levels and sources on selenium balance on 17-d-old broiler chickens

Selenium source1 Selenium levels, mg/kg Means SEM2 P-value
0.0 0.08 0.16 0.24 0.32 Source Level S X L3 L4 Q5
Intake, mg/bird
 Means 0.065 E 0.099 D 0.139 C 0.176 B 0.210 A 0.003 0.794 <0.01 0.794 <0.01 0.882
 SS 0.067 E 0.098 D 0.138 C 0.175 B 0.211 A 0.138 <0.01e 0.435
 SY 0.064 E 0.099 D 0.141 C 0.176 B 0.209 A 0.138 <0.01e 0.321
Carcass, mg/bird
 Means 0.050 C 0.062 BC 0.073 AB 0.075 AB 0.082 A 0.006 0.118 <0.01 0.717 <0.01 0.221
 SS 0.046 B 0.062 AB 0.073 A 0.067 AB 0.078 A 0.065 <0.01e 0.261
 SY 0.054 B 0.062 AB 0.074 AB 0.083 A 0.085 A 0.072 <0.01e 0.539
Feathers, mg/bird
 Means 0.0015 C 0.0020 BC 0.0023 AB 0.0025 A 0.0025 A 0.002 0.049 <0.01 0.725 <0.01 <0.01
 SS 0.0015 C 0.0018 BC 0.0022 AB 0.0024 AB 0.0025 A 0.0021 <0.01e 0.331
 SY 0.0015 B 0.0021 AB 0.0025 A 0.0027 A 0.0025 A 0.0023 <0.01e <0.01
Total, mg/bird6
 Means 0.051 C 0.064 BC 0.077 AB 0.077 AB 0.084 A 0.006 0.136 <0.01 0.698 <0.01 0.168
 SS 0.047 B 0.064 AB 0.077 A 0.069 AB 0.081 A 0.068 <0.01e 0.208
 SY 0.055 B 0.064 B 0.077 A 0.085 A 0.088 A 0.074 <0.01e 0.488
Retention, mg/bird7
 Means 0.024 C 0.037 BC 0.050 AB 0.050 AB 0.057 A 0.006 0.136 <0.01 0.698 <0.01 0.168
 SS 0.020 B 0.037 AB 0.050 A 0.042 AB 0.054 A 0.041 <0.01e 0.208
 SY 0.028 B 0.037 AB 0.050 AB 0.058 A 0.061 A 0.047 <0.01e 0.488
Balance, %
 Means 34.1 34.0 35.3 25.6 27.4 4.55 0.393 0.393 0.487 0.075 0.421
 SS 30.3 37.0 35.8 24.0 25.8 30.6 0.133 0.252
 SY 37.9 31.1 34.7 33.2 29.0 33.2 0.301 0.997

1 SS sodium selenite, SY selenium enriched-yeast

2 Standard error of means

3 Interactive effects between selenium and trace minerals sources and selenium levels

4 Linear effect of supplementation selenium levels

5 Quadratic effect of supplementation selenium levels

6 Sum of the Se content in the feathers and carcass

7 Whole body Se in the birds in the beginning of the experiment: 0.0027 mg Se/kg

A-B Different uppercase letters in the same line are different by Tukey test at 5%

e Different superscripts letter indicates difference in the orthogonal contrasts between equations