Fe source1 | Added Fe, mg/kg | Analyzed Fe2, mg/kg (as-fed basis) |
|---|
Control | 0 | 67.9 |
FeSO4∙7H2O | 20 | 86.6 |
40 | 112.2 |
60 | 132.0 |
Fe-Prot ES | 20 | 85.9 |
40 | 106.9 |
60 | 128.3 |
Feed grade NaFeEDTA | 20 | 85.4 |
40 | 106.1 |
60 | 128.6 |
Food grade NaFeEDTA | 20 | 83.30 |
40 | 104.45 |
60 | 123.77 |
- 1Fe-Prot ES represents the iron proteinate with extremely strong chelation strength (Qf = 8,590). Feed grade NaFeEDTA represents the sodium iron ethylenediaminetetraacetate with super extremely strong chelation strength (Qf = 2.07 × 108) at feed grade. Food grade NaFeEDTA represents the sodium iron ethylenediaminetetraacetate with super extremely strong chelation strength (Qf = 3.31 × 108) at food grade. The same as below
- 2Values of analyzed Fe contents are based on triplicate determinations of diets and reported on an as-fed basis
