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Table 1 Ingredients and chemical composition of the high-starch and high-fiber control diets used in this study

From: Bacterial direct-fed microbials fail to reduce methane emissions in primiparous lactating dairy cows

Items Control dietsa
High-starch diet High-fiber diet
Ingredients, % of DM
 Corn silage 44.0 _b
 Grass silage _ 55.0
 Hay 11.0 _
 Grain mixc 34.2 _
 Citrus pulp _ 12.0
 Dehydrated beet pulp _ 20.0
 Molasses, beet _ 5.0
 Soybean meal 8.7 8.0
 Urea 1.0 _
 Cane molasses 1.1 _
Chemical composition, % of DM
 OM 92.2 85.1
 CP 12.5 12.2
 NDF 35.4 48.4
 ADF 19.5 29.3
 Starch 27.4 1.8
 Ether extract 2.3 2.3
Fatty acids (FA), g/100 g of total FA
 12:0 0.17 0.34
 14:0 0.35 0.89
 16:0 20.7 21.7
cis-9 16:1 0.72 2.03
 18:0 2.57 2.13
cis-9 18:1 19.4 9.8
 18:2n-6 44.9 28.5
 18:3n-3 7.3 28.0
 GE, MJ/kg DM 16.8 16.9
  1. aEach cow was fed 250 g mineral mix comprising (g/kg): P, 2.5; Ca, 20; Mg, 4.5; Na, 3.5 (Galaphos Midi Duo GR, CCPA, Aurillac, France)
  2. bIngredients not included
  3. cComposition: barley (14.1% of DM), wheat (10.9% of DM) and corn (9.2% of DM)