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Effect of diatom supplementation during the nursery rearing of Litopenaeus vannamei (Boone, 1931) in a heterotrophic culture system |
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| Authors: | Leandro Cesar Godoy Clarisse Odebrecht Eduardo Ballester Tatiana Germano Martins Wilson Wasielesky Jr. |
| Affiliation: | 1. Programa de P??s-Gradua??o em Aquicultura, Laborat??rio de Ecologia do Fitoplancton e Microorganismos Marinhos, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil 3. Laborat??rio de Aquacultura, Universidade Federal do Rio Grande do Sul, Av. Bento Gon?alves, Porto Alegre, 7712, Brazil 2. Laborat??rio de Carcinicultura, Universidade Federal do Paran??, Palotina, PR, Brazil |
| Abstract: | Bio-floc shrimp culture systems have been investigated in an attempt to optimize water use and prevent the discharge of effluent into the environment. The importance of microalgae in maintaining water quality and nutrition of the shrimp is well known in conventional systems; however, its maintenance amid bio-flocs and its role in the shrimp performance in this system are still poorly understood. The aim of this study was to evaluate the contribution of diatoms in the performance of Litopenaeus vannamei reared during the nursery phase in intensive system with minimal water exchange. Shrimp (0.31?±?0.10?g) were reared among diatoms, bio-flocs and the combination of the two forming the mixture medium. The survival of shrimp was high in all treatments (90?C97%). However, the shrimp reared among diatoms showed higher weight gain (P? |
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