A Comparative Analysis of the Nutritional Quality of Salmon Species in Canada among Different Production Methods and Regions
Table 2
Nutritional, biochemical, mercury, and quality parameters of farmed Atlantic salmon in Canada raised in net pens compared to salmon raised in land-based closed contained-recirculating aquaculture systems (n = 8 for each type, mean ± standard deviation, presented on a wet weight basis)1.
Nutrient
Net pen
Land-based
p-Value
Moisture (%)
63.4 ± 7.9
61.9 ± 1.5
0.632
Protein (%)
20.3 ± 3.1
20.4 ± 0.9
0.944
Fat (%)
11.3 ± 4.1
11.9 ± 1.2
0.651
Cholesterol (%)
76.3 ± 35.0
78.9 ± 21.2
0.829
Mercury (µg/g)
Not detected
Not detected
–
Amino acids (g/100 g WW)
Threonine
0.89 ± 0.14
0.92 ± 0.04
0.490
Valine
1.23 ± 0.26
1.22 ± 0.10
0.953
Methionine
0.59 ± 0.0857
0.61 ± 0.02
0.501
Isoleucine
0.97 ± 0.15
1.02 ± 0.45
0.458
Leucine
1.51 ± 0.23
1.58 ± 0.06
0.431
Phenylalanine
0.84 ± 0.13
0.89 ± 0.05
0.300
Lysine
1.73 ± 0.27
1.80 ± 0.09
0.497
Histidine
0.55 ± 0.09
0.57 ± 0.02
0.592
Tryptophan
0.25 ± 0.04
0.22 ± 0.01
0.141
Arginine
1.16 ± 0.12
1.20 ± 0.05
0.567
Fatty acids (% of total fatty acids)
18 : 1n-9
36.5 ± 2.5
17.6 ± 3.1
<0.001
18 : 2n-6
17.7 ± 2.5
2.7 ± 1.8
<0.001
18 : 3n-3
3.6 ± 1.1
0.9 ± 0.2
<0.001
20 : 5n-3
3.2 ± 1.2
9.9 ± 1.8
<0.001
20 : 4n-6
0.5 ± 0.2
0.7 ± 0.4
0.164
22 : 6n-3
3.9 ± 0.6
11.4 ± 1.9
<0.001
ΣSFA2
17.8 ± 0.2
24.4 ± 1.0
<0.001
ΣMUFA3
46.5 ± 0.7
36.3 ± 3.4
<0.001
ΣPUFA4
35.4 ± 0.7
38.9 ± 3.5
0.015
Σn-3
14.1 ± 1.3
30.2 ± 4.3
<0.001
Σn-6
19.4 ± 2.5
4.4 ± 1.9
<0.001
n-3/n-6
0.7 ± 0.2
9.8 ± 8.6
0.010
EPA + DHA (g/100 g WW)5
0.70 ± 0.2
2.3 ± 0.5
<0.001
Color
L (lightness)
53.2 ± 2.5
55.5 ± 3.4
0.154
A (redness)
24.7 ± 4.8
30.1 ± 3.5
0.023
B (yellowness)
26.6 ± 3.6
31.8 ± 5.2
0.036
1Values are mean ± standard deviation. 2Saturated fatty acid. 3Monounsaturated fatty acid. 4Polyunsaturated fatty acid. 5Eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA)
