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Table 6 Fillet proximate and fatty acid composition of mandarin fish fed the four experimental diets for 12 weeks

From: Total replacement of dietary fish oil with alternative lipid sources in a practical diet for mandarin fish, Siniperca scherzeri, juveniles

 

Experimental diets

FO

LO

SO

Lard

Proximate composition (% wet weight)

 Moisture

77.9 ± 0.8

79.1 ± 0.4

78.7 ± 1.2

77.6 ± 0.4

 Crude protein

18.1 ± 0.5

18.1 ± 0.8

17.6 ± 0.9

18.8 ± 0.6

 Crude lipid

1.44 ± 0.36

1.70 ± 0.27

1.36 ± 0.17

1.32 ± 0.24

 Ash

1.37 ± 0.16

1.03 ± 0.11

1.14 ± 0.09

1.46 ± 0.02

Fatty acid (% total fatty acid)

 14:0

2.54 ± 0.17b

1.84 ± 0.12a

1.45 ± 0.02a

1.68 ± 0.03a

 16:0

21.8 ± 0.5a

20.8 ± 0.1a

20.8 ± 0.2a

23.4 ± 0.7b

 18:0

5.30 ± 0.12a

5.91 ± 0.14ab

6.01 ± 0.28ab

6.64 ± 0.25b

 16:1n-7

5.61 ± 0.58b

2.42 ± 0.18a

2.49 ± 0.37a

4.94 ± 0.12b

 18:1n-9 (OA)1

21.5 ± 1.7a

21.2 ± 0.7a

20.3 ± 0.1a

27.98 ± 1.2b

 18:2n-6 (LA)2

4.90 ± 0.31a

7.38 ± 0.20b

15.86 ± 0.45c

6.29 ± 0.39ab

 18:3n-3 (ALA)3

4.90 ± 0.28b

10.47 ± 0.48c

2.78 ± 0.31a

1.67 ± 0.02a

 20:4n-6

1.92 ± 0.32

1.09 ± 0.04

1.09 ± 0.02

1.42 ± 0.04

 20:5n-3 (EPA)4

6.20 ± 0.31b

4.96 ± 0.05a

4.49 ± 0.13a

4.59 ± 0.38a

 22:5n-3

1.56 ± 0.15b

1.42 ± 0.05ab

1.30 ± 0.03ab

1.04 ± 0.13a

 22:6n-3 (DHA)5

18.2 ± 1.8

16.4 ± 1.0

15.7 ± 0.2

14.0 ± 1.9

  1. Values are mean of triplicate groups and presented as mean ± SE. Values with different superscripts in the same row are significantly different (P < 0.05). The lack of superscript letter indicates no significant differences among treatments
  2. FO fish oil, LO linseed oil, SO soybean oil
  3. 1Oleic acid
  4. 2Linoleic acid
  5. 3α-Linolenic acid
  6. 4Eicosapentaenoic acid
  7. 5Decosahexaenoic acid