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Table 4 Apparent ileal digestibility of crude protein and amino acids of the assay dietsa

From: Effect of Bacillus subtilis and Bacillus licheniformis supplementation in diets with low- and high-protein content on ileal crude protein and amino acid digestibility and intestinal microbiota composition of growing pigs

 

High-protein

Low-protein

SEM

P-value

Item

-

+

-

+

P1

B2

P × B3

Crude protein

76.4

75.4

80.0

76.6

2.09

0.273

0.310

0.573

Indispensable amino acids

 Arginine

85.4

84.8

87.1

84.7

1.35

0.563

0.286

0.534

 Histidine

80.4

79.2

82.9

79.7

1.70

0.398

0.211

0.551

 Isoleucine

79.3

78.6

82.5

79.1

1.96

0.356

0.313

0.513

 Leucine

81.1

80.3

83.8

80.6

1.73

0.389

0.269

0.501

 Lysine

84.8

84.3

87.5

84.2

1.38

0.351

0.194

0.327

 Methionine

89.7

89.3

91.4

89.0

1.03

0.492

0.200

0.349

 Phenylalanine

78.6

78.1

82.0

79.0

1.99

0.295

0.386

0.522

 Threonine

76.6

75.7

79.5

75.3

2.09

0.546

0.235

0.446

 Tryptophan

75.1

73.2

78.1

73.8

2.47

0.470

0.226

0.628

 Valine

78.8

78.9

81.9

78.1

1.93

0.403

0.232

0.471

Dispensable amino acids

 Alanine

70.6

68.9

75.5

71.0

2.66

0.197

0.257

0.605

 Aspartic acid

74.6

73.4

78.6

74.7

2.32

0.263

0.284

0.566

 Cystine

74.3

72.6

78.9

74.5

2.33

0.176

0.200

0.568

 Glutamic acid

86.4

85.7

88.9

86.9

1.22

0.148

0.267

0.601

 Glycine

65.5

63.4

70.1

64.3

2.91

0.352

0.188

0.521

 Proline

82.7

81.4

85.3

82.2

1.64

0.312

0.197

0.611

 Serine

76.7

75.2

79.7

76.3

2.10

0.341

0.244

0.665

  1. 1 P-value of protein level
  2. 2 P-value of probiotic supplementation with Bacillus spp.
  3. 3 P-value of interaction between protein level and probiotic supplementation with Bacillus spp.
  4. aLS means and standard error of the means, %