Partial Replacement of Fishmeal with Duckweed (Spirodela polyrhiza) in Feed for Two Carnivorous Fish Species, Eurasian Perch (Perca fluviatilis) and Rainbow Trout (Oncorhynchus mykiss)
Table 10
Initial and final whole-body composition of rainbow trout (N = 4).
Initial fish
Final fish fed with
value
Control
DWD12
DWD24
DWD35
DWF12
DWF24
DWF35
SEM
DWD
DWF
Moisture (%)
79.6
71.4
70.6
74.4
76.0
73.2
74.0
76.6
0.67
0.001 (0.033)
0.005 (0.045)
Crude protein (g·100 g−1 FM
13.6
15.3
15.5
13.3
12.3
13.9
13.5
12.0
0.32
0.022 (0.011)
0.051 (0.014)
Crude lipids (g·100 g−1 FM)
4.89
7.95
8.43
6.47
6.24
7.71
7.45
6.61
0.32
0.007 (0.122)
0.092 (0.449)
Crude ash (g·100 g−1 FM)
1.54
1.86
2.16
2.07
2.08
1.84
1.90
1.73
0.047
0.031 (0.168)
0.074 (0.603)
Contrast analysis between initial and final fish = value; contrast analysis between control and duckweed fed fish = ( value).
