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Table 3 Effects of dietary selenium levels and sources on selenium balance on 17-d-old broiler chickens

From: Selenium source and level on performance, selenium retention and biochemical responses of young broiler chicks

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. 1 SS sodium selenite, SY selenium enriched-yeast
  2. 2 Standard error of means
  3. 3 Interactive effects between selenium and trace minerals sources and selenium levels
  4. 4 Linear effect of supplementation selenium levels
  5. 5 Quadratic effect of supplementation selenium levels
  6. 6 Sum of the Se content in the feathers and carcass
  7. 7 Whole body Se in the birds in the beginning of the experiment: 0.0027 mg Se/kg
  8. A-B Different uppercase letters in the same line are different by Tukey test at 5%
  9. e Different superscripts letter indicates difference in the orthogonal contrasts between equations