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Table 2 The summary of the meta-analysis on the effects of probiotics on the feed digestibility and efficiency traits of pre-weaning calves

From: A meta-analysis on the effects of probiotics on the performance of pre-weaning dairy calves

  

SMD

Heterogeneity

RMD

Egger’s test

Begg’s test

n

Random effect

95% CI

P-value

Chi-squared (Q)

P-value

I2, %

Control mean

Random effect

95% CI

P-value

P-value

P-value

Organic matter digestibility, %

8

0.242

−0.138, 0.623

0.211

1.480

0.983

0

86.400

0.724

−0.924, 2.372

0.389

0.282

0.386

Dry matter digestibility, %

8

0.332

−0.049, 0.713

0.087

0.630

0.999

0

84.240

1.195

−0.368, 2.757

0.134

0.955

0.386

Ether extract digestibility, %

5

0.324

−0.149, 0.796

0.179

0.230

0.994

0

83.800

1.587

−1.509, 4.684

0.315

0.059

1.000

Crude protein digestibility, %

7

0.290

−0.113, 0.692

0.158

3.240

0.779

0

82.986

1.339

−0.613, 3.291

0.179

0.893

1.000

NDF digestibility, %

2

3.828

−6.266, 13.921

0.457

8.550

0.003

88.3

54.900

8.808

−10.889, 28.506

0.381

 

1.000

ADF digestibility, %

3

0.134

−0.796, 1.065

0.777

3.940

0.140

49.2

57.200

0.711

−2.717, 4.138

0.684

0.518

1.000

SDMI, kg/d

42

0.439

0.234, 0.644

 < 0.001

114.640

 < 0.001

64.2

2.655

0.034

0.014, 0.053

0.001

0.030

0.050

TDMI, kg/d

47

0.329

0.105, 0.552

0.004

150.820

 < 0.001

69.5

1.003

0.020

0.006, 0.033

0.005

0.025

0.137

FCR, kg/kg

35

−0.305

−0.466, −0.144

 < 0.001

50.090

0.037

32.1

2.467

−0.073

−0.115, −0.031

0.001

0.012

0.005