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Table 3 Intake, milk production, milk composition and body weight (BW) gain of lactating cows fed high-starch or high-fiber diets (CTL) supplemented with bacterial direct-fed microbials (DFM) Propionibacterium freudenreichii 53 W (PF), Lactobacillus pentosus D31 (LP), and Lactobacillus bulgaricus D1(LB)

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

Items Treatment SEMa P-value
CTL PF LP LB Treatment CTL vs DFMb
Dry matter intake, kg/d
 High-starch diet 14.3 14.5 14.5 14.6 0.69 0.99 0.80
 High-fiber diet 12.2 12.5 12.6 12.3 0.72 0.97 0.74
Water intake, L/d
 High-starch diet 53.1 62.9 62.0 59.2 5.78 0.65 0.25
 High-fiber diet 56.5 50.7 47.5 51.6 3.25 0.33 0.11
Milk, kg/d
 High-starch diet 22.1 19.7 20.9 21.6 0.79 0.23 0.18
 High-fiber diet 16.3 16.9 17.0 15.6 1.40 0.89 0.90
Fat, g/kg milk
 High-starch diet 37.0 40.1 36.1 36.1 2.57 0.66 0.88
 High-fiber diet 38.7 41.4 41.1 37.7 2.85 0.75 0.68
Protein, g/kg milk
 High-starch diet 29.7 30.6 30.1 29.9 2.10 0.99 0.83
 High-fiber diet 27.1 27.8 27.9 26.3 1.38 0.82 0.91
ECMc, kg/d
 High-starch diet 22.7 21.2 21.3 22.1 0.70 0.41 0.17
 High-fiber diet 16.4 17.9 18.0 15.8 1.16 0.47 0.55
Efficiencyd,
 High-starch diet 1.60 1.46 1.48 1.52 0.08 0.65 0.27
 High-fiber diet 1.35 1.45 1.42 1.28 0.05 0.20 0.62
Body weight gain, kg
 High-starch diet −6.0 11.7 13.0 5.7 4.98 0.08 0.02
 High-fiber diet −3.0 4.2 0.5 −3.2 7.85 0.89 0.71
  1. aSEM-standard error of the means
  2. bP-value for control vs all direct-fed microbials (DFM) within each diet
  3. cECM-energy corrected milk [(0.327 × kg of milk) + (12.95 × kg of fat) + (7.65 × kg of protein)]
  4. dEfficiency = ECM/Dry matter intake
  5. 0.05 < P ≤ 0.10 from CTL group