Table 3.

Growth performance and somatic indexes of juvenile gilthead seabream fed to visual satiety from February to May 2019 (13 weeks) with a control diet and four supplemented diets with 0.5% or 1% of the LB_Gb or LB_Gh microalgae-derived products.

	CTRL	LBGb0.5	LB Gb1	LBGh0.5	LBGh1	pa
Initial body weight (g)	12.55 ± 0.04	12.64 ± 0.11	12.45 ± 0.10	12.56 ± 0.06	12.54 ± 0.05	0.650
Final body weight (g)	38.12 ± 0.89	37.97 ± 0.86	36.95 ± 1.18	37.89 ± 0.62	39.12 ± 0.36	0.519
Final fork length (cm)	14.08 ± 0.21	14.01 ± 0.25	14.29 ± 0.25	14.15 ± 0.22	14.03 ± 0.21	0.909
CFb	1.32 ± 0.05	1.30 ± 0.02	1.30 ± 1.02	1.34 ± 0.04	1.30 ± 0.02	0.835
Weight gain (%)c	203.8 ± 6.8	200.5 ± 4.4	196.8 ± 8.3	199.2 ± 5.8	208.1 ± 2.5	0.703
SGR (%)d	1.27 ± 0.03	1.26 ± 0.02	1.25 ± 0.03	1.26 ± 0.02	1.30 ± 0.01	0.610
HSI (%)e	1.01 ± 0.05a	1.16 ± 0.04ab	1.24 ± 0.04b	1.10 ± 0.07a	1.11 ± 0.04a	0.037
ILI (%)f	96.58 ± 5.09a	110.3 ± 5.09ab	128.4 ± 8.55b	111.1 ± 8.55ab	134.5 ± 6.92b	< 0.001

Data on body weight, feed intake and growth indexes are the mean ± SEM of triplicate tanks. Data on somatic indexes are the mean ± SEM of 24 fish. Different superscript letters in each row indicate significant differences among dietary treatments based on one-way ANOVA and Tukey’s test (p < 0.05). CTRL: control; LB_Gb0.5: LB-GREENboost (0.5%); LB_Gb1: LB-GREENboost (1%); LB_Gh0.5: LB-GUThealth (0.5%); LB_Gh1: LB-GUThealth (1%).

^aValues resulting from one-way analysis of variance.

^bCondition factor = (100 × body weight)/fork length³.

^cWeight gain (%) = (100 × (body weigh increase)/initial body weight.

^dSpecific growth rate = 100 × (ln final body weight − ln initial body weight)/days.

^eHepatosomatic index = (100 × liver weight)/fish weight.

^fIntestine length index = (100 × intestine length)/fork length.