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Table 2 Effect of energy density of close-up dry period diets on DMI and (NEI) in Holstein cows

From: Effect of reduced energy density of close-up diets on dry matter intake, lactation performance and energy balance in multiparous 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   
  1. 1HD high energy density diet, MD middle energy density diet, LD low energy density diet.
  2. a, b, cValues within a row with different superscripts differ significantly at P < 0.05.