Fe source | Added Fe, mg/kg | CAT activity, U/mg protein | SDH activity, U/mg protein | COX activity, mU/mg protein | ||||
---|---|---|---|---|---|---|---|---|
Heart | Kidney | Liver | Heart | Kidney | Liver | Liver | ||
Control1 | 0 | 2.21 | 19.0 | 16.2* | 3.44* | 4.34* | 2.33* | 28.7* |
FeSO4∙7H2O1 | 20 | 2.23 | 22.9 | 16.5 | 3.57 | 4.43 | 2.37 | 30.1 |
40 | 2.13 | 20.1 | 16.6 | 3.96 | 4.81 | 2.57 | 31.6 | |
60 | 2.19 | 20.6 | 16.7 | 4.12 | 4.92 | 2.81 | 34.9 | |
Fe-Prot ES1 | 20 | 2.07 | 20.6 | 16.9 | 3.63 | 4.72 | 2.43 | 29.9 |
40 | 2.25 | 20.8 | 17.4 | 3.99 | 5.28 | 2.69 | 34.5 | |
60 | 2.07 | 18.6 | 18.2 | 4.41 | 5.45 | 2.91 | 35.5 | |
Feed grade NaFeEDTA1 | 20 | 2.02 | 19.5 | 16.7 | 3.95 | 5.32 | 2.60 | 29.1 |
40 | 2.08 | 20.5 | 17.4 | 4.40 | 5.51 | 2.78 | 34.5 | |
60 | 2.15 | 19.4 | 18.4 | 4.62 | 6.22 | 2.82 | 35.3 | |
Food grade NaFeEDTA1 | 20 | 2.08 | 18.5 | 17.4 | 4.19 | 4.98 | 2.64 | 31.1 |
40 | 1.92 | 18.9 | 17.9 | 4.47 | 5.58 | 2.79 | 33.7 | |
60 | 2.00 | 20.2 | 19.0 | 4.65 | 6.46 | 2.86 | 36.0 | |
Pooled SE | Â | 0.18 | 1.40 | 0.41 | 0.31 | 0.36 | 0.17 | 1.71 |
Fe source2 | FeSO4∙7H2O | 2.18 | 21.2 | 16.6B | 3.88 | 4.72B | 2.58 | 32.2 |
Fe-Prot ES | 2.13 | 19.8 | 17.5A | 4.00 | 5.15AB | 2.68 | 33.3 | |
Feed grade NaFeEDTA | 2.08 | 19.8 | 17.5A | 4.32 | 5.68A | 2.73 | 33.0 | |
Food grade NaFeEDTA | 2.00 | 19.2 | 18.1A | 4.44 | 5.67A | 2.76 | 33.6 | |
Pooled SE | Â | 0.10 | 0.81 | 0.24 | 0.19 | 0.21 | 0.10 | 1.01 |
Added Fe level3, mg/kg | 20 | 2.10 | 20.4 | 16.9b | 3.83b | 4.86b | 2.51b | 30.1b |
40 | 2.09 | 19.9 | 17.3b | 4.20ab | 5.29ab | 2.71ab | 33.6a | |
60 | 2.10 | 19.7 | 18.1a | 4.45a | 5.76a | 2.85a | 35.4a | |
Pooled SE | Â | 0.09 | 0.70 | 0.21 | 0.17 | 0.18 | 0.09 | 0.86 |
P-value | Fe source | 0.6307 | 0.3541 | 0.0006 | 0.1672 | 0.0052 | 0.5973 | 0.7885 |
Added Fe level | 0.9974 | 0.7886 | 0.0011 | 0.0480 | 0.0049 | 0.0244 | 0.0002 | |
Fe Source × added Fe level | 0.9529 | 0.6721 | 0.7452 | 0.9993 | 0.8438 | 0.9812 | 0.9456 | |
Linear effect4 | – | – | 0.0002 | 0.0029 | 0.0006 | 0.0020 | < 0.0001 |