
Metaregression analysis for the linear phase

Metaanalysis for the plateau phase


Duration, wk

No. of trials

I^{2}, %

Intercept

Pvalue

Coefficient

Pvalue

Adjusted R^{2}, %

Duration, wk

No. of trials

I^{2}, %

Pooled effect size

Pvalue


CH_{4}

≤ 12

13

76.2

−5.484

0.001

0.486

0.003

76.8

≥ 11

9

0.0

0.313

0.039

TVFA

≤ 12

12

35.5

−1.883

0.008

0.132

0.048

99.9

≥ 11

19

46.7

−0.424

< 0.001

Individual VFA molar proportion
 
Acetate

≤ 11

11

76.8

−4.086

0.004

0.563

0.004

76.7

≥ 7

22

47.5

0.748

< 0.001

Propionate

≤ 11

11

84.5

7.306

< 0.001

−0.898

< 0.001

92.2

≥ 7

22

51.2

−0.366

0.033

Butyrate

≤ 11

11

80.6

−7.059

< 0.001

0.732

0.001

92.3

≥ 7

20

54.0

−0.582

0.002

A:P

≤ 11

10

78.6

−6.737

0.001

0.884

0.002

90.8

≥ 7

10

59.2

0.915

0.016

Totaltract fiber digestibility
 
NDF

≤ 23

15

55.7

−4.458

< 0.001

0.153

0.005

85.0
     
ADF

≤ 23

11

69.8

−6.276

0.001

0.213

0.030

45.1
     
 I^{2}, percentage of heterogeneity across studies; Intercept, estimate of the effect size after defaunation; Coefficient, estimate of the change in effect size per week following defaunation; Adjusted R^{2}, percentage of betweenstudy variance explained by the defaunation duration; TVFA, total VFA