USE OF Spirulina platensis AS FOOD SUPPLEMENT DURING NILE TILAPIA (CHITRALADA STRAIN) SEX REVERSAL IN SALT WATER

Authors

  • Ricardo Lafaiete Moreira Universidade Federal do Ceará
  • Rafael Rômulo de Oliveira Martins Universidade Federal do Ceará
  • Wladimir Ronald Lobo Farias Universidade Federal do Ceará

DOI:

https://doi.org/10.5216/cab.v12i1.9612

Keywords:

Aquaculture

Abstract

This study aimed to evaluate the Spirulina platensis influence as a food supplement in Nile tilapia post-larvae grown in saline water. The experiment consisted of two treatments with three replicates. In first one the animals were fed ration containing the androgen 17 ? - methyltestosterone and S. platensis, and in the other only diet with the hormone. At the end of the reversal (28 days), tilapia that received S. platensis showed average weights of 1.17 ± 0.16 g, significantly superior to the animals fed only ration, which reached an average weight of 0.62 ± 0.38 g (P < 0.05); however, survival rates showed no significant difference (P < 0.05). At the end of the experiment (78 days), fish gonadal analysis showed indices of 47.5% of males for fish reared without microalgae and 59.09% for fish reared with S. platensis. It was conclude that Nile tilapia showed good growth and survival rate in the presence of S. platensis, compared to the fish fed only diet in saline water. However, it was not possible to obtain acceptable rates of sex reversal after the administration of masculinizing hormone through the diet.

KEYWORDS: Microalgae, Oreochromis, sexual reversion, salinity, 17?- metiltestosterona.

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Author Biographies

Ricardo Lafaiete Moreira, Universidade Federal do Ceará

Possui graduação (2001-2006) e mestrado (2006-2008) em Engenharia de Pesca e Recursos Pesqueiros pela Universidade Federal do Ceará, atualmente é aluno de Doutorado desta mesma instituição. Foi professor substituto do Departamento Engenharia de Pesca - UFC, de 2007 a 2009, ministrando as disciplinas: Princípios da Ciência Pesqueira, Tecnologia Pesqueira I , Biologia Pesqueira III e Navegação II. Participa de pesquisas nas áreas de pesca, carcinicultura, piscicultura, maricultura e algocultura. Atualmente , é colaborador do Laboratório de Biotecnologia Aplicada a Aqüicultura - GENAQUA, desenvolvendo pesquisas com monitoramento e melhoramento genético da tilápia do Nilo, Oreochromis niloticus variedade Chitralada.

Rafael Rômulo de Oliveira Martins, Universidade Federal do Ceará

Engenheiro de Pesca formado pelo Departamento de Engenharia de Pesca da Universidade Federal do Ceará.

Wladimir Ronald Lobo Farias, Universidade Federal do Ceará

Possui graduação em Engenharia de Pesca pela Universidade Federal do Ceará (1993), mestrado em Bioquímica pela Universidade Federal do Ceará (1995) e doutorado em Química Biológica pela Universidade Federal do Rio de Janeiro (2000). Atualmente é professor adjunto III da Universidade Federal do Ceará. Tem experiência na área de Bioquímica, com ênfase em Glicídeos, atuando principalmente nos seguintes temas: algas marinhas, polissacarídeos sulfatados, atividade biológica de polissacarídeos sulfatados e aqüicultura integrada

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Published

2011-03-31

How to Cite

MOREIRA, R. L.; MARTINS, R. R. de O.; FARIAS, W. R. L. USE OF Spirulina platensis AS FOOD SUPPLEMENT DURING NILE TILAPIA (CHITRALADA STRAIN) SEX REVERSAL IN SALT WATER. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 12, n. 1, p. 76–82, 2011. DOI: 10.5216/cab.v12i1.9612. Disponível em: https://revistas.ufg.br/vet/article/view/9612. Acesso em: 25 nov. 2024.

Issue

Vol. 12 No. 1 (2011)

Section

Animal Production

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