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Table 8 Fatty acid composition of liver total lipids of pigs fed isonitrogenous diets without (CON) or with 5% insect meal (IM5) or 10% insect meal (IM10) for 4 weeks

From: Comprehensive evaluation of the metabolic effects of insect meal from Tenebrio molitor L. in growing pigs by transcriptomics, metabolomics and lipidomics

 

CON

IM5

IM10

P-value

Fatty acids, g/100 g total FAME

 14:0

0.21 ± 0.12

0.27 ± 0.07

0.20 ± 0.15

0.774

 15:0

0.41 ± 0.07

0.35 ± 0.06

0.39 ± 0.06

0.165

 16:0

14.2 ± 1.1

14.2 ± 1.1

14.2 ± 0.9

0.628

 16:1

0.42 ± 0.06

0.44 ± 0.04

0.44 ± 0.08

0.814

 17:0

2.10 ± 1.20

1.62 ± 0.46

1.68 ± 0.29

0.637

 17:1

0.47 ± 0.10

0.38 ± 0.09

0.38 ± 0.12

0.120

 18:0

29.6 ± 0.8

29.6 ± 1.5

30.3 ± 1.0

0.323

 18:1 t9

0.12 ± 0.05

0.15 ± 0.05

0.16 ± 0.06

0.096

 18:1n-9

11.1 ± 1.0

11.2 ± 1.0

11.3 ± 1.6

0.914

 18:2n-6

16.3 ± 1.1

16.2 ± 1.0

16.5 ± 1.6

0.796

 18:3n-6

0.31 ± 0.09

0.24 ± 0.06

0.30 ± 0.05

0.104

 18:3n-3

0.40 ± 0.10

0.33 ± 0.04

0.33 ± 0.10

0.163

 20:0

0.27 ± 0.11

0.34 ± 0.24

0.32 ± 0.06

0.144

 20:2n-6

0.49 ± 0.10

0.45 ± 0.04

0.48 ± 0.14

0.819

 20:3n-6

0.73 ± 0.11

0.70 ± 0.07

0.63 ± 0.14

0.001

 20:4n-6

18.2 ± 1.1

18.9 ± 0.8

18.2 ± 1.5

0.309

 22:0

0.30 ± 0.06

0.30 ± 0.07

0.34 ± 0.08

0.276

 20:5n-3

0.29 ± 0.09

0.24 ± 0.08

0.20 ± 0.06

0.067

 22:5n-3

1.90 ± 0.34

1.92 ± 0.45

1.94 ± 0.41

0.980

 22:6n-3

2.18 ± 0.42a

2.22 ± 0.27a

1.65 ± 0.36b

0.001

Product: substrate-ratios

 20:3n-6/18:2n-6

0.04 ± 0.01

0.04 ± 0.01

0.04 ± 0.01

0.075

 20:4n-6/18:2n-6

1.12 ± 0.11

1.17 ± 0.06

1.11 ± 0.15

0.445

 20:5n-3/18:3n-3

0.73 ± 0.18

0.72 ± 0.15

0.62 ± 0.14

0.224

 22:6n-3/22:5n-3

1.20 ± 0.35a

1.23 ± 0.38a

0.88 ± 0.27b

0.049

  1. Values are means ± SDs for n = 10 pigs per group. Means without a common superscript letter differ, P < 0.05
  2. Abbreviations: CON control group; FAME fatty acid methyl esters; IM5 insect meal 5% group; IM10 insect meal 10% group