| Regression coefficient, slope (mean ± SE) | RBV, % (mean ± SE) |  | ||||||
---|---|---|---|---|---|---|---|---|---|
Dependent variable | FeSO4∙7H2O | Fe-Prot ES | Feed grade NaFeEDTA | Food grade NaFeEDTA | FeSO4∙7H2O | Fe-Prot ES | Feed grade NaFeEDTA | Food grade NaFeEDTA | P-value2 |
PI | 0.114 ± 0.019B | 0.108 ± 0.019B | 0.122 ± 0.018AB | 0.137 ± 0.019A | 100 | 95 ± 9 | 106 ± 8 | 120 ± 8 | 0.02 |
TS | 4.505 ± 0.845 | 4.221 ± 0.801 | 4.562 ± 0.773 | 4.918 ± 0.806 | 100 | 94 ± 15 | 101 ± 14 | 109 ± 14 | 0.34 |
Liver Fe | 5.821 ± 2.513B | 9.228 ± 2.445A | 10.414 ± 2.387A | 10.883 ± 2.506A | 100 | 159 ± 24 | 179 ± 26 | 187 ± 26 | < 0.0001 |
Liver SDH activity | 0.108 ± 0.051 | 0.131 ± 0.049 | 0.137 ± 0.048 | 0.147 ± 0.050 | 100 | 121 ± 23 | 127 ± 23 | 136 ± 24 | 0.15 |
Heart SDH activity | 0.254 ± 0.095B | 0.283 ± 0.091AB | 0.337 ± 0.091AB | 0.365 ± 0.093A | 100 | 111 ± 19 | 133 ± 19 | 144 ± 20 | 0.03 |
Kidney SDH activity | 0.237 ± 0.111B | 0.327 ± 0.109AB | 0.424 ± 0.106A | 0.438 ± 0.111A | 100 | 138 ± 24 | 179 ± 28 | 185 ± 28 | 0.0007 |
Liver CAT activity | 0.328 ± 0.123C | 0.508 ± 0.119B | 0.512 ± 0.119AB | 0.635 ± 0.122A | 100 | 155 ± 21 | 156 ± 21 | 194 ± 23 | < 0.0001 |
Liver COX activity | 2.236 ± 0.533 | 2.450 ± 0.519 | 2.410 ± 0.514 | 2.572 ± 0.522 | 100 | 112 ± 12 | 108 ± 12 | 115 ± 12 | 0.23 |
Liver SDH mRNA | 0.073 ± 0.027B | 0.107 ± 0.027A | 0.117 ± 0.027A | 0.123 ± 0.027A | 100 | 147 ± 20 | 160 ± 21 | 169 ± 21 | < 0.0001 |
Kidney SDH mRNA | 0.054 ± 0.024B | 0.092 ± 0.023A | 0.094 ± 0.023A | 0.088 ± 0.024A | 100 | 170 ± 25 | 174 ± 26 | 160 ± 25 | < 0.0001 |