From: Mineral status and enteric methane production in dairy cows during different stages of lactation
Lactation stage1 | Statistics | ||||
---|---|---|---|---|---|
Minerals | Early | Middle | Late | SEM | P-value |
Macroelements | |||||
Na, g/L | 3.12 | 3.08 | 3.12 | 0.013 | 0.311 |
K, mg/dL | 16.3 | 15.8 | 16.1 | 0.230 | 0.689 |
P, mg/dL | 5.95 | 5.86 | 5.94 | 0.129 | 0.954 |
Ca, mg/dL | 8.04 | 8.32 | 8.69 | 0.173 | 0.316 |
Mg, mg/dL | 2.43 | 2.25 | 2.30 | 0.035 | 0.095 |
Microelements | |||||
Fe, mg/L | 1.799 | 1.823 | 2.006 | 0.074 | 0.467 |
Zn, mg/L | 0.774 | 0.777 | 0.885 | 0.025 | 0.105 |
Cu, mg/L | 0.729 | 0.805 | 0.788 | 0.028 | 0.517 |
Mn, μg/L | 14.56 | 13.20 | 15.58 | 1.557 | 0.842 |
Zn/Cu ratio | 1.204 | 1.084 | 1.017 | 0.053 | 0.427 |
Albumin, g/L | 33.68 | 36.51 | 36.85 | 1.465 | 0.607 |