Genotype-specific responses in Atlantic salmon (Salmo salar) subject to dietary fish oil replacement by vegetable oil: a liver transcriptomic analysis

Table 4 Liver fatty acid composition (percentage of total fatty acids) of Atlantic salmon Lean and Fat family groups fed diets containing either FO or VO

Parameters	FO		VO		ANOVA
	Fat	Lean	Fat	Lean	Diet	Genotype	Diet×Gen
Fatty acid
Total saturated	25.8 ± 0.8	22.1 ± 1.5	19.1 ± 1.0	18.3 ± 1.0	<0.0001	<0.0001	0.0044
Total monoenes	23.8 ± 1.3	31.1 ± 2.5	40.8 ± 3.3	39.0 ± 2.5	<0.0001	0.0141	0.0002
18:2n-6	2.9 ± 0.1	3.0 ± 0.3	10.1 ± 0.2	10.4 ± 0.2	<0.0001	0.0317	ns
18:3n-6	0.1 ± 0.1	0.1 ± 0.1	0.1 ± 0.1	0.1 ± 0.0	ns	ns	ns
20:2n-6	0.5 ± 0.0	0.7 ± 0.0	1.6 ± 0.2	1.9 ± 0.1	<0.0001	<0.0001	ns
20:3n-6	0.4 ± 0.0	0.4 ± 0.0	1.3 ± 0.1	1.4 ± 0.1	<0.0001	ns	ns
20:4n-6	2.2 ± 0.2	1.9 ± 0.2	1.2 ± 0.1	1.4 ± 0.1	<0.0001	ns	0.0009
22:5n-6	0.2 ± 0.0	0.2 ± 0.1	0.1 ± 0.0	0.1 ± 0.0	<0.0001	ns	ns
Total n-6 PUFA	6.3 ± 0.3	6.3 ± 0.4	14.4 ± 0.3	15.3 ± 0.3	<0.0001	0.0031	0.0031
18:3n-3	1.0 ± 0.0	1.1 ± 0.2	4.3 ± 0.2	4.7 ± 0.2	<0.0001	0.0021	0.0466
18:4n-3	0.4 ± 0.1	0.4 ± 0.1	0.3 ± 0.0	0.3 ± 0.1	0.0104	ns	ns
20:3n-3	0.2 ± 0.0	0.3 ± 0.0	0.7 ± 0.1	0.7 ± 0.3	<0.0001	ns	ns
20:4n-3	1.6 ± 0.1	2.3 ± 0.3	1.1 ± 0.1	1.3 ± 0.1	<0.0001	<0.0001	0.0021
20:5n-3	8.6 ± 0.3	8.2 ± 0.4	4.7 ± 0.4	5.2 ± 0.4	<0.0001	ns	0.0085
22:5n-3	3.6 ± 0.2	4.4 ± 0.3	1.9 ± 0.2	2.1 ± 0.1	<0.0001	<0.0001	0.0025
22:6n-3	28.6 ± 1.0	23.7 ± 1.9	12.6 ± 1.5	13.1 ± 1.1	<0.0001	0.0011	0.0002
Total n-3 PUFA	44.1 ± 1.1	40.5 ± 1.5	25.7 ± 2.4	27.4 ± 1.4	<0.0001	ns	0.0009
Total PUFA	50.4 ± 1.2	46.8 ± 1.5	40.2 ± 2.6	42.8 ± 1.6	<0.0001	ns	0.0004

Results are means ± SD (n = 6) and p-values of two-way ANOVA are presented for factors 'diet', 'genotype' and interaction between both factors. ns, not significantly different (p > 0.05).

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