Table 1.
Formulation, approximate crude protein (CP) levels of ingredients and analysed composition of the experimental diets M (fishmeal and fish oil-based) and V (all fishmeal and fish oil replaced by plant protein and plant oil sources).
Figure 1.
Voluntary feed intake (FI) of the trout during the last week of acclimation when feeding diet M and over three consecutive periods of the 25-day V-challenge with diet V.
FI data represent means ± SEM (n = 4, except for C3M and C1V with n = 3) according nutritional history (M or V) and family (C1, C2, C3). For each period, the significance of the effects of nutritional history, family and their interaction (2-way ANOVA) is provided in the figure, * indicates a significant effect of nutritional history (V>M, p<0.05).
Table 2.
The body weight (BW) of the trout at the start of the V-challenge and body composition of the fish at the start and at the end of the V-challenge.
Table 3.
Data on growth, feed intake and nutrient utilization of the trout during the 25-day V-challenge.
Figure 2.
Specific growth rate (SGR) of the trout during the 25-day V-challenge according to the early nutritional history (M or V) and family (C1, C2, C3).
Values are means ± SEM (n = 4, except for C3M and C1V with n = 3). Dotted bars represent the effect of nutritional history (M or V) during the V-challenge, averaged over all three families (ALL, means ± SEM, n = 11). The significance of the effects of nutritional history, family (C2>C1>C3) and their interaction (2-way ANOVA) is added in the figure, * indicates a significant effect of nutritional history (V>M, p<0.05).
Figure 3.
Feed efficiency (FE) of the trout during the 25-day V-challenge according to the early nutritional history (M or V) and family (C1, C2, C3).
Values are means ± SEM (n = 4, except for C3M and C1V with n = 3). Dotted bars represent the effect of nutritional history (M or V) during the V-challenge, averaged over all three families (ALL, means ± SEM, n = 11). The significance of the effects of nutritional history, family (C2 = C1>C3) and their interaction (2-way ANOVA) is provided in the figure. * indicates a significant effect of nutritional history (V>M, p<0.05).
Figure 4.
Feed efficiency (FE) during the restricted V-challenge.
Two families of rainbow trout with nutritional history (M or V) received for 4 weeks diet V at 0.75% of their body weight (restricted feeding). Values are means ± SEM (n = 2). The significance of the effects of nutritional history, family (C2>C1) and interaction (P values, 2-way ANOVA) is provided in the results section, * shows a significant effect of nutritional history (V>M, p<0.05).