Table 3. Lipid content and fatty acid profile (percentage of total fatty acids) of fish fillets.

	Fish dietary groups				ANOVA p-value	Kruskal–Wallis p-value
	1 (0%CO)	2 (20%CO)	3 (40%CO)	4 (60%CO)
Lipid content (% wet weight)	5.64 ± 1.74	5.70 ± 1.37	4.72 ± 1.80	4.18 ± 0.98	0.09
C14:0	2.65 ± 1.09	2.86 ± 1.52	1.81 ± 0.78	1.88 ± 0.43		0.12
C15:0	0.38 ± 0.26B	0.39 ± 0.14A	0.29 ± 0.09B	0.35 ± 0.19B		<0.001
C16:0	14.66 ± 4.00	13.86 ± 6.43	11.86 ± 5.01	11.92 ± 2.84	0.65
C17:0	0.51 ± 0.13	0.60 ± 0.29	0.55 ± 0.31	0.41 ± 0.15		0.25
C18:0	4.31 ± 0.91	4.06 ± 1.12	3.42 ± 1.43	4.33 ± 0.47		0.63
C20:0	0.45 ± 0.18	0.86 ± 1.34	0.36 ± 0.26	0.78 ± 1.14		0.50
Total saturated	22.97 ± 5.54	22.63 ± 5.15	18.29 ± 4.48	19.67 ± 4.49	0.99
C14:1n−7	0.17 ± 0.14AB	0.24 ± 0.18A	0.05 ± 0.08B	0.14 ± 0.17AB	0.006
C14:1n−5	0.31 ± 0.18	0.44 ± 0.40	0.32 ± 0.33	0.29 ± 0.26		0.82
C15:1n−5	0.14 ± 0.14	0.43 ± 0.41	0.39 ± 0.53	0.18 ± 0.22		0.06
C16:1n−7	4.98 ± 1.47	4.84 ± 1.96	3.50 ± 1.35	3.30 ± 0.85	0.06
C18:1n−5	0.33 ± 0.24	0.41 ± 0.32	0.50 ± 0.52	0.32 ± 0.26	0.78
C18:1n−7	3.19 ± 0.34A	2.81 ± 0.61AC	2.46 ± 0.38BC	2.32 ± 0.19BC		<0.001
C18:1n−9	22.89 ± 2.30Aab	19.58 ± 6.72aB	18.41 ± 5.81ABb	20.89 ± 2.40Aab		<0.001
C20:1n−9	0.40 ± 0.17	0.33 ± 0.20	0.53 ± 0.54	0.37 ± 0.23		0.57
C20:1n−7	1.64 ± 0.38	1.31 ± 0.63	1.38 ± 0.34	1.55 ± 0.36		0.39
C22:1n−11	1.43 ± 0.67	1.54 ± 1.03	1.24 ± 0.80	0.97 ± 0.32		0.22
C22:1n−9	0.66 ± 0.31	0.62 ± 0.19	0.59 ± 0.42	0.67 ± 0.28	0.87
Total monoenes	36.14 ± 6.68	32.55 ± 5.69	29.37 ± 5.32	31.00 ± 6.08		0.97
C18:2n−6	9.39 ± 1.19Bb	9.21 ± 2.98Bab	11.40 ± 3.63ABa	13.94 ± 1.27Aab	<0.001
C18:3n−6	0.00 ± 0.00Bab	0.00 ± 0.00Bab	0.29 ± 0.25ABb	0.70 ± 0.39Aa		<0.001
C20:2n−6	0.44 ± 0.22	0.83 ± 1.07	0.43 ± 0.30	0.51 ± 0.20	0.38
C20:3n−6	0.50 ± 0.26	0.81 ± 1.23	0.38 ± 0.30	0.42 ± 0.30		0.53
C20:4n−6	0.95 ± 0.21	0.63 ± 0.31	0.78 ± 0.18	0.69 ± 0.14		0.05
C22:5n−6	0.73 ± 0.46	1.35 ± 1.66	0.39 ± 0.28	0.51 ± 0.47		0.13
Total n-6 PUFA	12.01 ± 3.63	12.83 ± 3.49	13.67 ± 4.47	16.77 ± 5.46		0.63
C16:3n−3	0.21 ± 0.17	0.41 ± 0.32	0.49 ± 0.54	0.26 ± 0.22	0.37
C16:4n−3	0.51 ± 0.12	0.60 ± 0.35	0.59 ± 0.47	0.50 ± 0.31		0.61
C18:3n−3	1.73 ± 0.25B	4.33 ± 1.14BC	8.57 ± 2.86AC	12.16 ± 1.79AC		<0.001
C18:4n−3	1.04 ± 0.25	1.06 ± 0.39	1.06 ± 0.22	1.10 ± 0.29	0.99
C20:3n−3	0.25 ± 0.16b	0.39 ± 0.19ab	0.48 ± 0.17ab	0.60 ± 0.33a	0.01
C20:4n−3	1.01 ± 0.73	0.78 ± 0.20	0.73 ± 0.23	0.73 ± 0.21		0.55
C20:5n−3	6.86 ± 1.79a	5.57 ± 1.68a	5.34 ± 1.11ab	4.25 ± 0.97b		0.006
C22:5n−3	2.61 ± 1.06	2.99 ± 1.81	2.44 ± 0.72	1.92 ± 0.42	0.31
C22:6n−3	8.96 ± 3.62	7.09 ± 3.51	7.44 ± 1.46	6.40 ± 1.75	0.33
Total n-3 PUFA	23.18 ± 3.16	23.22 ± 2.54	27.14 ± 3.24	27.92 ± 3.92		0.98
Total PUFA	35.19 ± 3.24	36.05 ± 2.84	40.81 ± 3.64	44.69 ± 4.44		0.98
EPA + DHA	15.82 ± 5.27	12.66 ± 5.15	13.09 ± 2.01	10.91 ± 2.66	0.10
n − 3∕n − 6 ratio	1.93 ± 0.48	1.81 ± 0.48	1.99 ± 0.55	1.66 ± 0.32	0.35

Notes.

Data expressed as means ± SD (n = 9).

Different capital and small letters within row show significant differences among diets at p < 0.01 and p < 0.05, respectively.

Statistical differences were determined by one-way ANOVA with Tukey’s comparison test and by Kruskal–Wallis with Dunn’s test.