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Titolo:
Pilot evaluation of freeze-dried microalgae in the mass rearing of gilthead seabream (Sparus aurata) larvae
Autore:
Canavate, JP; Fernandez-Diaz, C;
Indirizzi:
CICEM El Toruno, E-11500 Cadiz, Spain CICEM El Toruno Cadiz Spain E-11500 ICEM El Toruno, E-11500 Cadiz, Spain CSIC, Inst Ciencias Marinas Andalucia, E-11510 Puerto Real, Cadiz, Spain CSIC Puerto Real Cadiz Spain E-11510 a, E-11510 Puerto Real, Cadiz, Spain
Titolo Testata:
AQUACULTURE
fascicolo: 3-4, volume: 193, anno: 2001,
pagine: 257 - 269
SICI:
0044-8486(20010215)193:3-4<257:PEOFMI>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
MARINE UNICELLULAR ALGAE; FATTY-ACID COMPOSITION; SCOPHTHALMUS-MAXIMUS L; ROTIFER BRACHIONUS; CULTURE; GROWTH; NANNOCHLOROPSIS; TURBOT; WATER; AQUACULTURE;
Keywords:
Sparus aurata; algae; freeze-dried; larvae; enrichment; rotifers; seabream;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Fernandez-Diaz, C CICEM El Toruno, POB 16, E-11500 Cadiz, Spain CICEM El Toruno POB 16 Cadiz Spain E-11500 Cadiz, Spain
Citazione:
J.P. Canavate e C. Fernandez-Diaz, "Pilot evaluation of freeze-dried microalgae in the mass rearing of gilthead seabream (Sparus aurata) larvae", AQUACULTURE, 193(3-4), 2001, pp. 257-269

Abstract

The replacement of live microalgae by freeze-dried Nannochloropsis gaditana (B3 strain) and Isochrysis galbana (T-ISO strain) in the mass rearing of larval seabream (Sparus aurata) was studied. Total substitution of live N. gaditana by freeze-dried cells in 1 m(3) larval tanks produced similar growth and survival in larvae reared from first feeding until day 43 with threedifferent types of rotifer enrichment. Differences in growth of larvae were only due to the type of enrichment used to feed rotifers prior to their addition to larval tanks. This was regardless of the presence of live or freeze-dried N. gaditana in the larval tanks. Specific growth rate (G) of larvae was significantly enhanced (G = 0.106 +/- 0.001; P < 0.05) with a commercial enricher compared to N. gaditana (G = 0.099 +/- 0.003) as rotifer enricher. Feeding the rotifers with freeze-dried I. galbana produced the same larval growth rate (G = 0.109 +/- 0.002; P > 0.05) as the commercial enricher, indicating the high nutritional value of these algae in a freeze-dried state. Larval survival was similar in all treatments. Water quality, in terms of dissolved oxygen and pH, was also similar in the different treatments. Ammonia concentration was higher (P < 0.05) when freeze-dried N. gaditana was added to the larval tanks, but only during the first 15 days of culture, when no water exchange was used. Nitrite did not vary (P > 0.05) during the first 15 days, but increased more for live N. gaditana from day 16 onwards. Results of this study indicate the potential for a complete replacementof live microalgae by freeze-dried microalgae throughout the whole processof mass rearing seabream larvae. (C) 2001 Elsevier Science B.V. All rightsreserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 09:38:14