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Table 9 Intestinal morphometric indices of broilers

From: Suitability of Hermetia illucens larvae meal and fat in broiler diets: effects on animal performance, apparent ileal digestibility, gut histology, and microbial metabolites

 Items

Protein × Fat

SE

P-value

Protein (LSMean)

SE

P-value

Fat

SE

P-value

S + 0 L

S + 50 L

S + 100 L

L + 0 L

L + 50 L

L + 100 L

S

L

0 L

50 L

100 L

Jejunum

 Villus height, μm

1114

1179

1008

994

1214

1157

71.06

0.114

1100

1122

45.78

0.678

1054v

1197u

1082uv

52.95

0.065

 Villus width, μm

188

193

172

197

222

204

14.43

0.641

184

207

9.149

0.033

192

207

188

10.65

0.288

 Villus area, mm2

0.19

0.19

0.15B

0.16Y

0.24Z

0.22A,YZ

0.015

0.015

0.18

0.21

0.001

0.018

0.17

0.21

0.18

0.011

0.035

 Crypt depth, μm

135

125

137

120

133

137

7.952

0.314

132

130

4.795

0.701

127

129

137

5.713

0.388

 Villus height/crypt depth

8.57

9.85

7.68

8.53

9.56

8.54

0.808

0.721

8.70

8.88

0.495

0.769

8.55uv

9.70u

8.11v

0.585

0.093

 Goblet cells villus, n/200 μm

19.1

15.8

15.5

16.0

15.6

15.3

1.319

0.393

16.8

15.6

0.808

0.238

17.5

15.7

15.4

0.956

0.184

 Mucosa, μm

1356

1395

1243

1220

1471

1345

84.68

0.292

1331

1345

47.52

0.832

1288

1433

1294

58.62

0.139

 Submucosa, μm

33.9

33.0

34.8

29.8

34.4

34.7

1.956

0.302

33.9

33.0

1.929

0.537

32

34

35

1.414

0.294

 Tunica muscularis circular layer, μm

136

136

138

137

134

134

9.637

0.971

137

135

6.150

0.787

137

135

136

7.142

0.984

Ileum

 Villus height, μm

523

556

492

566

513

564

33.64

0.189

524

548

20.91

0.369

545

535

528

24.72

0.877

 Villus width, μm

155

153

165

174y

157

140z

8.434

0.034

157

157

4.869

0.947

164

155

152

5.964

0.351

 Villus area, mm2

0.07

0.08

0.07

0.09

0.07

0.08

0.006

0.379

0.07

0.08

0.003

0.363

0.08

0.07

0.08

0.004

0.541

 Crypt depth, μm

119

143

134

144

134

143

7.144

0.0721

132

140

4.125

0.159

132

138

138

5.051

0.562

 Villus height/crypt depth

4.56

3.89

3.72

3.97

3.90

3.97

0.245

0.184

4.05

3.94

0.156

0.567

4.26

3.89

3.84

0.183

0.148

 Goblet cells villus, n/200 μm

30

28

26

27

30

28

3.511

0.442

28

28

2.893

0.760

28

29

27

3.059

0.675

 Mucosa, μm

676

725

629

722

671

704

39.17

0.215

677

699

23.64

0.475

699

698

667

28.33

0.635

 Submucosa, μm

44.7

48.3

38.8

41.5

47.6

43.4

3.115

0.423

44.0

44.2

1.902

0.923

43.1uv

47.9u

41.1v

2.267

0.072

 Tunica muscularis circular layer, μm

277

270

239

227

278

264

24.08

0.238

262

256

14.97

0.770

252

274

252

17.70

0.541

  1. S, soybean meal; L; 15% of SBM crude protein substituted with HI larvae meal CP; S + 0 L, SBM + 0 HI larvae fat; S + 50 L, SBM + 50% HI larvae fat; S + 100 L, SBM+ 100% HI larvae fat; L + 0 L, HI larvae meal+ 0 HI larvae fat; L + 50 L, HI larvae meal+ 50% HI larvae fat; L + 100 L, HI larvae meal+ 100% HI larvae fat
  2. A,B Protein sources at the same HI larvae fat inclusion level differ if having different superscripts (P < 0.05)
  3. Y,Z HI larvae fat level within protein sources not sharing a common superscript differ (P < 0.05)
  4. y,z HI larvae fat level within HI larvae feeding not sharing a common superscript differ by trend (0.05 ≤ P ≤ 0.10)
  5. u,v indicate differences by trend (0.05 ≤ P ≤ 0.10) for the main effect of fat source
  6. 1post hoc test Tukey P > 0.10
  7. SE Standard error