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Table 4 Activity of bacterial α-arabinopyranosidase, α-arabinofuranosidase, β-xylosidase, β-cellobiosidase and N-acetyl-β-D-glucosaminidase [μmol/h/g digesta] in the cecal digesta of rabbits (mean ± SEM1)

From: The effect of dietary supplementation with silkworm pupae meal on gastrointestinal function, nitrogen retention and blood biochemical parameters in rabbits

 

Group2

p value

SBM

SPM5

SPM10

α-Arabinopyranosidase

 Extracellular

2.06 ± 0.179ab

2.43 ± 0.444a

1.21 ± 0.241b

0.021

 Intracellular

0.413 ± 0.166b

0.692 ± 0.147ab

1.06 ± 0.191a

0.025

 Total

2.47 ± 0.262

3.12 ± 0.577

2.27 ± 0.397

0.229

 Release rate3

85.6 ± 4.508a

79.0 ± 2.666a

53.6 ± 4.730b

< 0.001

α-Arabinofuranosidase

 Extracellular

2.40 ± 0.306a

2.55 ± 0.466a

1.27 ± 0.253b

0.032

 Intracellular

0.281 ± 0.117b

1.20 ± 0.172a

1.11 ± 0.247a

0.005

 Total

2.68 ± 0.345

3.75 ± 0.521

2.37 ± 0.444

0.064

 Release rate3

90.4 ± 3.474a

65.5 ± 4.946b

55.6 ± 6.836b

< 0.001

β-Xylosidase

 Extracellular

2.83 ± 0.629

2.97 ± 0.542

1.48 ± 0.294

0.079

 Intracellular

0.541 ± 0.161b

1.75 ± 0.394a

1.52 ± 0.348ab

0.025

 Total

3.38 ± 0.780

4.72 ± 0.736

3.00 ± 0.513

0.131

 Release rate3

83.0 ± 2.713a

64.5 ± 5.663b

52.4 ± 7.775b

0.002

β-Cellobiosidase

 Extracellular

1.90 ± 0.237ab

2.09 ± 0.350a

1.07 ± 0.185b

0.025

 Intracellular

0.476 ± 0.142b

1.54 ± 0.346a

1.34 ± 0.306ab

0.024

 Total

2.03 ± 0.238

2.72 ± 0.378

1.72 ± 0.332

0.062

 Release rate3

93.3 ± 1.390a

74.2 ± 3.721b

65.2 ± 4.862b

< 0.001

NAGase

 Extracellular

3.13 ± 0.560c

5.30 ± 0.399b

7.04 ± 0.513a

< 0.001

 Intracellular

4.36 ± 0.474

4.78 ± 0.594

4.02 ± 0.498

0.378

 Total

7.48 ± 0.969b

10.1 ± 0.902ab

11.1 ± 0.691a

0.016

 Release rate3

40.2 ± 2.541c

53.2 ± 2.211b

64.1 ± 3.174a

< 0.001

  1. a, b, cmeans with different superscripts in the same row differ significantly (P < 0.05)
  2. 1SEM - standard error of the mean
  3. 2Group: SBM - 10% SBM, SPM5–5% SBM and 5% SPM, SPM10–10% SPM (SBM - soybean meal, SPM - dried silkworm pupae meal)
  4. 3Release rate = extracellular enzyme activity expressed as a percentage of total (extra- + intracellular) enzyme activity