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DOI | 10.3856/VOL42-ISSUE3-FULLTEXT-4 | ||||||
Año | 2014 | ||||||
Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
The aim of this study was to evaluate the effect of the addition of Navicula sp. on plankton composition and postlarvae growth of Litopenaeus vannamei reared in culture tanks with zero water exchange systems. Four treatments were considered: zero water exchange (ZWE); ZWE with the addition of feed (ZWE-F); ZWE with the addition of Navicula sp. (ZWE-N) and ZWE with the addition of feed and Navicula sp. (ZWE-FN), all in triplicate. Shrimp of 17.7 +/- 0.02 mg were stocked at a density of 2500 shrimp m(-3) and microalgae added on the 1st, 5th and 15th day at a density of 5x10(4) cell mL(-1). The shrimp were fed a commercial feed composed by 42% crude protein four times a day except in the ZWE treatment. For data analysis we used Cochran, Shapiro-Wilk, ANOVA, Tukey and Student-t tests (P < 0.05). The most frequent genera were: Anabaena, Arcella, Asplanchma, Bosmina, Brachionus, Cylindrotheca, Daphnia, Fragilaria, Hemiaulus, Keratella, Orthoseira, Oscillatoria, Phymatodocis, Rhabdonema, Skeletonema, Sckizothrix and Ulothrix. Significant differences between treatments were observed for TAN, NO2-N, alkalinity, final weight, weight gain, final biomass, biomass gain, feed conversion ratio, specific growth rate and survival. The ZWE-FN treatment showed better production parameters, indicating the benefits of the addition of Navicula sp. as a natural food source for L. vannamei postlarvae in zero water exchange systems.
Ord. | Autor | Género | Institución - País |
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1 | Ferreira-Marinho, Yllana | - |
Univ Fed Rural Pernambuco - Brasil
Universidade Federal Rural de Pernambuco - Brasil |
2 | Brito, Luis Otavio | Hombre |
Inst Agron Pernambuco - Brasil
Instituto Agronômico - Brasil Instituto Agronômico de Pernambuco - Brasil |
3 | Figueiredo da Silva, Clarissa Vilela | Mujer |
Univ Fed Rural Pernambuco - Brasil
Universidade Federal Rural de Pernambuco - Brasil |
4 | dos Santos, Itala Gabriela Sobral dos | Mujer |
Univ Fed Rural Pernambuco - Brasil
Universidade Federal Rural de Pernambuco - Brasil |
5 | Olivera-Galvez, Alfredo | Hombre |
Univ Fed Rural Pernambuco - Brasil
Universidade Federal Rural de Pernambuco - Brasil |
Fuente |
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Conselho Nacional de Desenvolvimento Científico e Tecnológico |
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) |
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) |
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior |
Financiadora de Estudos e Projetos |
Financiadora de Estudos e Projetos (FINEP) |
Agradecimiento |
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The authors are grateful for the financial support provided by the Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) and Financiadora de Estudos e Projetos (FINEP). Thanks are also to anonymous referees for their valuable suggestions. Alfredo Olivera is a CNPq research fellow. |