Comparative evaluation of sunflower oil and linseed oil as dietary ingredient for gilthead seabream (Sparus aurata) fingerlings | OCL

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Table 4

Growth and feed utilization indices (mean ± SD) of gilthead seabream fed either LO- or SFO-added diets for 9 weeks.

Index	CTRL	LO50	LO60	LO70	SFO50	SFO60	SFO70

Initial body weight (BW_i, g)	4.12 ± 0.03	4.20 ± 0.06	4.18 ± 0.05	4.13 ± 0.13	4.21 ± 0.10	4.15 ± 0.04	4.08 ± 0.01
Final body weight (BW_f, g)	23.90^a ± 0.30	22.88^ab ± 1.03	21.18^b ± 0.95	18.51^c ± 0.53	23.37^ab ± 0.63	22.05^b ± 0.94	20.13^c ± 0.12
Weight gain (WG, g)	19.78^a ± 0.33	18.68^ab ± 1.09	17.00^b ± 1.00	14.39^c ± 0.66	19.15^ab ± 0.66	17.93^b ± 0.98	15.99^c ± 0.12
Daily weight gain (DWG, g/d)	0.30^a ± 0.01	0.29^a ± 0.02	0.27^a ± 0.02	0.23^{b ∗} ± 0.02	0.30^a ± 0.03	0.28^ab ± 0.01	0.25^b ± 0.00
Feed intake (FI, g/fish)	33.10 ± 1.05	32.98 ± 2.49	32.35 ± 4.00	30.88 ± 2.71	33.43 ± 1.17	31.67 ± 2.46	29.05 ± 1.60
Daily feed intake (DFI, g/fish/d)	0.52 ± 0.02	0.51 ± 0.05	0.51 ± 0.03	0.49 ± 0.05	0.51 ± 0.05	0.48 ± 0.05	0.46 ± 0.02
Feed conversion ratio (FCR)	1.67^a ± 0.08	1.77^ab ± 0.26	1.91^ab ± 0.16	2.14^b ± 0.10	1.76^a ± 0.07	1.77^a ± 0.10	1.81^a ± 0.09
Protein efficiency ratio (PER)	1.24^a ± 0.06	1.17^ab ± 0.17	1.08^ab ± 0.01	0.94^b ± 0.06	1.19^a ± 0.04	1.16^a ± 0.07	1.13^a ± 0.06
Protein productive value (PPV)	23.30^a ± 1.11	19.93^ab ± 2.87	16.72^bc ± 0.17	14.10^{c ∗} ± 0.94	21.84^a ± 1.38	19.05^b ± 0.49	18.49^{b ∗} ± 0.89
Hepatosomatic index (HSI)	1.13 ± 0.02	1.19 ± 0.10	1.26 ± 0.33	1.26 ± 0.25	1.22 ± 0.23	1.27 ± 0.15	1.30 ± 0.30
Viscerosomatic index (VSI)	5.35^a ± 0.34	5.4^a1 ± 0.40	6.51^a ± 0.18	6.89^b ± 0.57	5.33^a ± 0.41	6.23^ab ± 0.33	6.59^b ± 0.46
Condition factor (K)	2.63 ± 0.60	2.39 ± 0.88	2.01 ± 0.42	1.88 ± 0.40	2.50 ± 0.37	2.21 ± 0.60	1.93 ± 0.35

Means (n = 60) in the same row, for either LO or SFO groups separately, with different letters are significantly different (P < 0.05, ^∗ highly significant P < 0.01).

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