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. 2014 May 29;5(1):30. doi: 10.1186/2049-1891-5-30

Table 2.

Effect of energy density of close-up dry period diets on DMI and (NEI) in Holstein cows

Item Dietary treatment1
 SEM P-value
HD MD LD Diet Time Interaction
DMI, kg/d
   Prepartum
    Wk −3 to −1
 14.3a
 13.6b
 12.6c
 0.14
 <0.001
 <0.001
 0.87
     Wk−1
 12.3
 11.8
 11.1
 0.29
 0.22
  
  
    H −48 to −25
 10.9
 11.0
 9.6
 0.46
 0.37
  
  
    H −24 to 0
 5.0
 5.6
 6.3
 0.61
 0.7
  
  
   Postpartum
    Wk 1 to 5
 18.8b
 19.1ab
 19.7a
 0.13
 0.04
 <0.001
 0.37
    H 0 to 24
 10.5
 10.4
 11.1
 0.82
 0.95
  
  
    H 25 to 48
 11.9
 12.1
 12.6
 0.7
 0.93
  
  
    Wk 1 to 3
 17.9
 18.1
 18.3
 0.18
 0.86
 <0.001
 0.67
    Wk 4 to 5
 20.1b
 20.7b
 21.7a
 0.17
 0.001
 0.12
 0.66
NEI, MJ/d
   Prepartum
    Wk −3 to −1
 97.1a
 83.3b
 68.6c
 0.83
 <0.001
 <0.001
 0.42
    Wk −1
 83.3a
 72.4b
 60.2c
 2.22
 < 0.001
  
  
    H −48 to −25
 73.9a
 67.3a
 52.0b
 3.31
 0.01
  
  
    H −24 to 0
 34.1
 33.9
 34.3
 3.64
 0.99
  
  
   Postpartum
    Wk 1 to 5
 136.0b
 138.1ab
 142.3a
 0.95
 0.03
 <0.001
 0.67
    H 0 to 24
 76.3
 75.3
 80.1
 6.23
 0.87
  
  
    H 25 to 48
 86.1
 97.9
 91.0
 5.06
 0.93
  
  
    Wk 1 to 3
 129.2
 130.5
 132.2
 1.40
 0.72
 <0.001
 0.9
    Wk 4 to 5
 145.2b
 149.4b
 156.9a
 1.25
 0.001
 0.12
 0.64
NDF, kg/d
  
  
  
  
  
  
  
   Prepartum
    Wk −3 to −1
 5.3c
 5.8b
 6.3a
 0.07
 <0.001
 <0.001
 0.99
    Wk −1
 4.6b
 5.1ab
 5.5a
 0.14
 0.03
  
  
    H −48 to −25
 4.1
 4.7
 4.8
 0.20
 0.32
  
  
    H −24 to 0
 1.9
 2.4
 3.1
 0.28
 0.19
  
  
   Postpartum
    Wk 1 to 5
 6.0b
 6.1ab
 6.2a
 0.04
 0.04
 <0.001
 0.40
    H 0 to 24
 3.3
 3.3
 3.5
 0.26
 0.95
  
  
    H 25 to 48 3.8 3.9 4.0 0.22 0.95    

1HD high energy density diet, MD middle energy density diet, LD low energy density diet.

a, b, cValues within a row with different superscripts differ significantly at P < 0.05.