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Effect of dietary (n-3) highly unsaturated fatty acids on growth and survival of fat snook (Centropomus parallelus, Pisces: Centropomidae) larvae during first feeding
Seiffert, M. E. B; Cerqueira, V. R; Madureira, L. A. S.
  • Seiffert, M. E. B; Universidade Federal de Santa Catarina. Centro de Ciências Agrárias. Departamento de Aquicultura. Florianópolis. BR
  • Cerqueira, V. R; Universidade Federal de Santa Catarina. Centro de Ciências Agrárias. Departamento de Aquicultura. Florianópolis. BR
  • Madureira, L. A. S; Universidade Federal de Santa Catarina. Centro de Ciências Físicas e Matemáticas. Departamento de Química. Central de Análises. Florianópolis. BR
Braz. j. med. biol. res ; 34(5): 645-651, May 2001. tab
Artigo em Inglês | LILACS | ID: lil-285861
ABSTRACT
The effect of rotifers, Brachionus rotundiformis (S-type), fed three different diets A (rotifer fed Nannochloropsis oculata), B (rotifer fed N. oculata and baker's yeast, 11), and C (rotifer fed N. oculata and baker's yeast, 11, and enriched with SelcoFACE="Symbol">â), was evaluated based on the survival, growth and swim bladder inflation rate of fat snook larvae. Rotifers of treatment A had higher levels (4.58 mg/g dry weight) of eicosapentaenoic acid (EPA) than B (1.81 mg/g dry weight), and similar levels (0.04 and 0.06 mg/g dry weight, respectively) of docosahexaenoic acid (DHA). Rotifers of treatment C had the highest levels of EPA (13.2 mg/g dry weight) and DHA (6.08 mg/g dry weight). Fat snook eggs were obtained by spawning induction with human chorionic gonadotropin. Thirty hours after hatching, 30 larvae/liter were stocked in black cylindric-conical tanks (36-liter capacity). After 14 days of culture, there were no significant differences among treatments. Mean standard length was 3.13 mm for treatment A, 3.17 mm for B, and 3.39 mm for C. Mean survival rates were very low (2.7 percent for treatment A, 2.3 percent for B, and 1.8 percent for C). Swim bladder inflation rates were 34.7 percent for treatment A, 27.1 percent for B, and 11.9 percent for C. The lack of differences in growth and survival among treatments showed that the improvement of the dietary value of rotifer may not have been sufficient to solve the problem of larval rearing. Some other factor, probably pertaining to the quality of the larvae, may have negatively influenced survival
Assuntos
Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Gorduras Insaturadas na Dieta / Dieta / Ácidos Graxos Insaturados / Peixes / Ração Animal Limite: Animais Idioma: Inglês Revista: Braz. j. med. biol. res Assunto da revista: Biologia / Medicina Ano de publicação: 2001 Tipo de documento: Artigo / Documento de projeto País de afiliação: Brasil Instituição/País de afiliação: Universidade Federal de Santa Catarina/BR

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Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Gorduras Insaturadas na Dieta / Dieta / Ácidos Graxos Insaturados / Peixes / Ração Animal Limite: Animais Idioma: Inglês Revista: Braz. j. med. biol. res Assunto da revista: Biologia / Medicina Ano de publicação: 2001 Tipo de documento: Artigo / Documento de projeto País de afiliação: Brasil Instituição/País de afiliação: Universidade Federal de Santa Catarina/BR