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

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

	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 ± 0.17^b	1.84 ± 0.12^a	1.45 ± 0.02^a	1.68 ± 0.03^a
16:0	21.8 ± 0.5^a	20.8 ± 0.1^a	20.8 ± 0.2^a	23.4 ± 0.7^b
18:0	5.30 ± 0.12^a	5.91 ± 0.14^ab	6.01 ± 0.28^ab	6.64 ± 0.25^b
16:1n-7	5.61 ± 0.58^b	2.42 ± 0.18^a	2.49 ± 0.37^a	4.94 ± 0.12^b
18:1n-9 (OA)¹	21.5 ± 1.7^a	21.2 ± 0.7^a	20.3 ± 0.1^a	27.98 ± 1.2^b
18:2n-6 (LA)²	4.90 ± 0.31^a	7.38 ± 0.20^b	15.86 ± 0.45^c	6.29 ± 0.39^ab
18:3n-3 (ALA)³	4.90 ± 0.28^b	10.47 ± 0.48^c	2.78 ± 0.31^a	1.67 ± 0.02^a
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 ± 0.31^b	4.96 ± 0.05^a	4.49 ± 0.13^a	4.59 ± 0.38^a
22:5n-3	1.56 ± 0.15^b	1.42 ± 0.05^ab	1.30 ± 0.03^ab	1.04 ± 0.13^a
22:6n-3 (DHA)⁵	18.2 ± 1.8	16.4 ± 1.0	15.7 ± 0.2	14.0 ± 1.9

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
FO fish oil, LO linseed oil, SO soybean oil
¹Oleic acid
²Linoleic acid
³α-Linolenic acid
⁴Eicosapentaenoic acid
⁵Decosahexaenoic acid

ISSN: 2234-1757