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Table 6 Comparison of the results of detecting pathogenic bacteria in feed ingredients by two methods

From: The MBS microbial rapid detection system for rapid detection of major pathogenic bacteria in feed: comparison with plate counting method

Feed ingredient

Strainsa*

Method

Positive rate

(%)

Mean value

(μg/kg)

Median value

(μg/kg)

Maximum value

(μg/kg)

Blood meal

E. coli

PCM

MBS

COLI

PCM

100

2.82 ± 0.77a

2.86

3.90

MBS

100

2.99 ± 0.60a

2.87

3.85

TVC

PCM

100

3.43 ± 0.83a

3.61

4.85

MBS

100

4.06 ± 0.87b

4.44

4.92

Meat and bone meal

E. coli

PCM

MBS

COLI

PCM

100

2.27 ± 0.70a

1.97

3.54

MBS

100

2.32 ± 0.69a

1.94

3.56

TVC

PCM

100

3.08 ± 0.46a

2.96

3.78

MBS

100

3.03 ± 0.52b

2.80

3.87

Fish meal

E. coli

PCM

20

0.51 ± 0.05a

0.48

0.58

MBS

20

0.46 ± 0.11a

0.44

0.59

COLI

PCM

100

2.35 ± 0.84a

1.91

3.79

MBS

100

2.28 ± 0.76a

1.97

3.91

TVC

PCM

100

3.17 ± 1.07a

2.85

5.52

MBS

100

3.52 ± 0.80a

3.50

4.92

Feather meal

E. coli

PCM

60

2.60 ± 0.26a

2.64

2.84

MBS

60

2.67 ± 0.25a

2.76

2.87

COLI

PCM

100

1.76 ± 0.74a

1.93

3.04

MBS

100

1.92 ± 0.87b

2.19

3.16

TVC

PCM

100

3.37 ± 0.83a

3.36

4.91

MBS

100

3.36 ± 0.79a

3.29

4.81

Whey meal

E. coli

PCM

MBS

COLI

PCM

20

1.87 ± 0.21a

1.93

2.12

MBS

20

1.86 ± 0.20a

1.85

2.18

TVC

PCM

100

2.18 ± 0.57a

2.13

2.85

MBS

100

2.22 ± 0.44a

2.19

2.79

  1. a/bMeans with different superscripts are significantly different within a column (P < 0.05). Data are expressed as the mean ± SD (n = 5)
  2. a*E. coli Escherichia coli, Sal, Salmonella, S. aureus Staphylococcus aureus, Listeria Listeria monocytogenes, COLI Coliforms, TVC Total viable count