Does Genetic Background of Rainbow Trout Impact Growth and Feed Utilisation following Fishmeal Substitution by Partly Defatted Insect Meal (Hermetia illucens) or Microalgae Powder (Arthrospira platensis)?
Table 3
Apparent digestibility coefficients of dry matter (DM), crude protein (CP) and (semi-) essential amino acids in different strains of rainbow trout fed either a fishmeal based (control) or fishmeal-free diets (HM20, SP20).
Diet
Control
HM20
SP20
Breed
TL
HK3
HK7
HK8
TL
HK3
HK7
HK8
TL
HK3
HK7
HK8
DM
76.6
76.4
72.4
71.6
73.9
72.7
72.4
69.3
77.2
76.2
71.3
71.8
CP
89.9
89.5
84.8
82.5
86.1
84.9
84.4
79.5
88.1
87.5
81.7
81.2
Cys
87.1
86.9
78.6
77.5
85.8
85.0
81.0
77.3
88.6
88.6
81.6
80.6
Met
92.9
91.9
86.8
84.5
91.1
90.6
87.8
82.7
93.7
93.3
86.9
86.3
Thr
89.7
88.6
81.3
79.2
87.2
86.6
82.6
77.8
88.7
87.8
80.1
79.4
Val
89.8
89.5
82.8
80.4
88.1
87.0
84.2
80.4
87.5
86.2
79.0
77.9
Ileu
92.7
91.8
87.4
85.2
91.2
90.5
87.8
84.2
90.9
90.4
84.8
83.7
Leu
92.7
92.1
88.0
85.4
91.1
90.0
87.7
83.9
89.8
89.6
84.4
83.0
Tyr
92.8
92.8
87.4
84.5
92.2
91.6
89.3
86.0
91.4
91.7
85.1
85.0
Phe
94.2
93.7
90.0
87.9
93.9
93.1
91.3
88.1
94.1
94.1
89.4
88.8
Lys
92.2
91.3
86.0
83.0
89.4
88.3
85.4
79.7
92.1
91.9
84.3
83.3
His
91.8
91.1
85.1
83.1
89.7
88.5
86.0
83.0
91.8
92.2
85.5
85.1
Arg
94.7
94.5
90.5
88.2
93.7
93.2
91.1
87.5
85.9
85.9
80.6
80.1
Values could not be tested for statistical differences due to limitation of replicates. HM20 = fishmeal was completely substituted by Hermetia-meal; SP20 = fishmeal was completely substituted by spirulina-meal.
