Dietary aquaculture by-product hydrolysates: impact on the transcriptomic response of the intestinal mucosa of European seabass (Dicentrarchus labrax) fed low fish meal diets

Table 1 Growth performances and survival rates of sea bass fed experimental diets over a 10-week period

DIET	FM5	FM20	FM5 + 5% TH	FM5 + 5% SH	FM5 + 5% MH
Initial BW (g)	2.2 ± 0.01	2.2 ± 0.01	2.2 ± 0 .01	2.3 ± 0.00	2.2 ± 0.01
Final BW (g)	11.7 ± 0.4^a	13.1 ± 0.3^b	13.9 ± 0.4^b	13.2 ± 0.5^b	13.0 ± 0.6^b
SGR (%)	2.5 ± 0.1^a	2.7 ± 0.1^b	2.8 ± 0.1^b	2.7 ± 0.1^b	2.7 ± 0.1^b
K factor	2.0 ± 0.03	2.0 ± 0.01	2.0 ± 0.02	2.0 ± 0.02	2.0 ± 0.03
Feed intake (g/kg ABW/d)	33.34 ± 1.46	30.40 ± 1.63	31.55 ± 1.41	30.60 ± 1.12	31.50 ± 0.94
FCR	1.95 ± 0.04^a	1.75 ± 0.05^b	1.83 ± 0.04^ab	1.79 ± 0.04^ab	1.82 ± 0.04^ab
SR (%)	93.0 ± 2.6	96.0 ± 0.9	96.0 ± 0.9	93.8 ± 0.8	97.0 ± 1.1

Values are the means of four replicate groups of 50 measurements each, presented as mean ± SEM. Lines with different superscript letters differ significantly according to Tukey’s multiple comparison test (P < 0.05). Abbreviations: FM5 5% fish meal diet, FM20 20% fish meal diet; TH tilapia hydrolysate diet, SH shrimp hydrolysate diet, MH mixed hydrolysate diet, BW body weight, SGR specific growth rate, ABW average body weight, FCR feed conversion ratio, SR survival rate

ISSN: 1471-2164