Table 11 Chemical composition of the barley straw and concentrate fed to heifers and diets consumed during each period.

From: Repeated inoculation of cattle rumen with bison rumen contents alters the rumen microbiome and improves nitrogen digestibility in cattle

Chemical composition

Barley straw1

Concentrate2

Diet consumed before transfers3

Diet consumed after transfers3

DM, %

92.0 ± 0.89

92.4 ± 0.41

92.5 ± 0.01

92.5 ± 0.01

OM, % of DM

92.8 ± 1.59

90.1 ± 0.36

92.0 ± 0.07

92.0 ± 0.03

CP, % of DM

6.3 ± 1.17

38.3 ± 0.37

15.2 ± 0.82

15.8 ± 0.33

NDF, % of DM

78.0 ± 3.89

37.6 ± 1.41

66.7 ± 1.04

66.0 ± 0.41

ADF, % of DM

46.6 ± 3.46

16.0 ± 0.65

38.1 ± 0.79

37.6 ± 0.31

  1. DM, dry matter; OM, organic matter; CP, crude protein; NDF, neutral detergent fiber; ADF, acid detergent fiber.
  2. 1Fed to achieve 70% of diet DM.
  3. 2Fed to achieve 30% of diet DM. Composition (DM basis): 66.7% of corn dried distillers grains with solubles, 26.6% of canola meal, 4.2% calcium carbonate, 1% of urea, 0.8% dicalcium phosphate, 0.5% salt, 0.17% feedlot premix, and 0.01% vitamin E. Feedlot premix supplied per kg of diet DM: 65 mg of Zn, 28 mg of Mn, 15 mg of Cu, 0.7 mg of I, 0.2 mg of Co, 0.3 mg of Se, 6000 IU of vitamin A, 600 IU of vitamin D, and 47 IU of vitamin E.
  4. 3Diet consumed during the 5 days total collection period.
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