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Table 2 Relationship between colonization by opportunistic pathogens and bacteriophage in the URT of beef calves with weaning and transportation stressors and sampling time points

From: Effect of maternal separation and transportation stress on the bovine upper respiratory tract microbiome and the immune response to resident opportunistic pathogens

Microbial group

Factor

Comparison

Odds ratio (OR)c

95% CI

P-value

25%

75%

Mannheimia

Stressora

W

0.70

0.27

1.80

0.46

  

W + T

1.61

0.59

4.54

0.35

 

Sampling timeb

D2

15.04

2.91

120.85

 < 0.01

  

D4

34.85

5.10

409.30

 < 0.01

  

D8

9.79

1.96

75.76

0.01

  

D14

9.16

1.92

68.71

0.01

  

D28

4.99

1.03

37.16

0.07

Pasteurella

Stressor

W

0.06

0.36

2.47

0.90

  

W + T

0.35

0.52

3.93

0.50

 

Sampling time

D2

2.35

2.21

63.83

 < 0.01

  

D4

2.34

1.86

87.02

0.01

  

D8

1.50

1.09

20.93

0.04

  

D14

0.51

0.44

6.80

0.46

  

D28

0.40

0.39

6.16

0.56

Histophilus

Stressor

W

1.31

0.52

3.39

0.57

  

W + T

1.11

0.42

2.94

0.82

 

Sampling time

D2

5.49

1.30

26.79

0.02

  

D4

11.12

2.00

93.74

0.01

  

D8

1.15

0.28

4.94

0.84

  

D14

1.04

0.27

4.31

0.95

  

D28

1.84

0.48

7.60

0.37

Haemophilus

Stressor

W

0.30

0.11

0.81

0.02

  

W + T

0.67

0.25

1.80

0.43

 

Sampling time

D2

9.26

1.97

56.00

 < 0.01

  

D4

50.37

6.14

1161.44

 < 0.01

  

D8

2.99

0.66

16.68

0.17

  

D14

2.67

0.61

14.39

0.21

  

D28

2.51

0.57

13.64

0.24

Moraxella

Stressor

W

1.16

0.47

2.88

0.75

  

W + T

1.15

0.45

2.92

0.77

 

Sampling time

D2

4.24

1.03

19.64

0.05

  

D4

4.51

0.96

24.75

0.06

  

D8

2.99

0.75

13.10

0.13

  

D14

1.69

0.45

6.90

0.45

  

D28

2.14

0.56

8.87

0.27

Mycoplasma

Stressor

W

1.91

0.79

4.76

0.15

  

W + T

0.69

0.28

1.73

0.43

 

Sampling time

D2

1.10

0.27

4.63

0.89

  

D4

1.57

0.34

7.52

0.57

  

D8

1.64

0.41

6.91

0.49

  

D14

1.58

0.41

6.32

0.51

  

D28

1.74

0.45

7.09

0.42

Microvirus

Stressor

W

1.57

0.62

4.10

0.35

  

W + T

2.32

0.88

6.43

0.09

 

Sampling time

D2

0.34

0.07

1.44

0.15

  

D4

0.25

0.04

1.25

0.10

  

D8

2.74

0.66

12.16

0.17

  

D14

1.35

0.35

5.25

0.65

  

D28

1.69

0.44

6.75

0.44

P2-like virus

Stressor

W

1.15

0.47

2.85

0.76

  

W + T

0.73

0.28

1.84

0.50

 

Sampling time

D2

1.85

0.46

7.78

0.39

  

D4

2.69

0.57

14.16

0.22

  

D8

0.51

0.12

2.04

0.34

  

D14

0.94

0.25

3.54

0.92

  

D28

0.73

0.19

2.80

0.65

  1. W, Weaned calves; W + T, Weaned + Transport calves
  2. aWith reference to Suckling calves including all sampling time points (D0-D28)
  3. bWith reference to D0 sampling including all 3 treatment groups
  4. cOR is calculated after adjusting logistic regression models for sampling time OR < 1 indicates a negative relationship (colonization of microbial group decreased); OR > 1 indicates a positive relationship (colonization of microbial group increased)
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Animal Microbiome

ISSN: 2524-4671