Use of freeze-dried microalgae for rearing gilthead seabream, Sparus aurata L., larvae. II. Biochemical composition |
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Authors: | Nuria Navarro Manuel Yúfera Manuel García-Gallego |
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Institution: | (1) Instituto de Ciencias Marinas de Andalucía (CSIC), 11510 Puerto Real, Cádiz, Spain;(2) Present address: Instituto Mediterraneo de Estudios Avanzados (CSIC-UIB), 07190 Esporles, Palma de Mallorca, Spain;(3) Facultad de Ciencias, Dpto. Biología Animal y Ecología, Universidad de Granada, Avda. Fuente Nueva s/n, 18001 Granada, Spain |
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Abstract: | The objectives of this study were to test whether freeze-dried microalgae are nutritionally adequate for rearing rotifers as food for gilthead seabream larvae. The elemental composition (C, N, H) and fatty acid composition were analysed in larvae of gilthead seabream, Sparus aurata L., rotifers Brachionus plicatilis and Brachionus rotundiformis and freeze-dried microalgae Nannochloropsis oculata. Four larval feeding treatments were tested: (A) larvae fed rotifers cultivated with freeze-dried microalgae and daily addition of freeze-dried microalgae to the larval tanks; (B) larvae fed rotifers cultivated with freeze-dried microalgae and daily addition of live microalgae to the larval tanks; (C) larvae fed rotifers cultivated with freeze-dried microalgae, without addition of microalgae to the larval tank and (D) larvae fed rotifers cultivated with live microalgae and daily addition of live microalgae to the larval tanks. No significant differences were observed between the biochemical composition of larvae with treatment A (with freeze-dried microalgae) and the composition of larvae in treatment D that were obtained with the acceptable methods for culture systems (with live microalgae). |
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Keywords: | elemental composition fatty acid composition freeze-dried microalgae rotifers Sparus aurata |
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