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Table 2 Daily intake of components and the minerals of dairy cows, by lactation state

From: Mineral status and enteric methane production in dairy cows during different stages of lactation

  Lactation stage1
Item Early Middle Late
Daily intake2, kg/day
 DM 29.8 25.7 22.2
 OM 27.1 23.6 20.2
 Ash 2.6 2.2 1.9
 CP 5.3 4.8 4.2
 EE 1.5 1.1 0.9
 CF 4.8 4.6 4.4
 aNDF 10.2 9.5 8.7
 ADF 6.2 5.9 5.6
Macro mineral intake, g/day
 Ca 241 183 157
 Na 143 116 104
 K 339 316 299
 Mg 98.2 79.7 64.3
Micro mineral intake, mg/day
 Fe 8.53 8.41 8.31
 Mn 1.85 1.63 1.42
 Zn 2.24 1.97 1.71
 Cu 0.86 0.75 0.64
  1. 1Early = early-stage lactation (1–100 days); Middle = middle-stage lactation (101–250 days); Late = late-stage lactation (> 250 days)
  2. 2DM = dry matter; OM = organic matter; CP = crude protein; EE = ether extract; CF = crude fiber; aNDF = neutral detergent fiber; ADF = acid detergent fiber