Skip to main content

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