SciELO - Scientific Electronic Library Online

 
vol.43 número3Cultivo de larvas y juveniles de almeja voladora Euvola vogdesi (Pteroida: Pectinidae)Mercurio total en hembras del tiburón bironche, Rhizoprionodon longurio y en sus embriones índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Latin american journal of aquatic research

versión On-line ISSN 0718-560X

Resumen

SUITA, Sabrina M; BALLESTER, Eduardo L.C; ABREU, Paulo C  y  WASIELESKY JR, Wilson. Dextrose as carbon source in the culture of Litopenaeus vannamei (Boone, 1931) in a zero exchange system. Lat. Am. J. Aquat. Res. [online]. 2015, vol.43, n.3, pp.526-533. ISSN 0718-560X.  http://dx.doi.org/10.3856/vol43-issue3-fulltext-13.

This work compared the use of dextrose and molasses as carbon sources for biofloc development, water quality maintenance, microorganism composition and growth performance of Litopenaeus vannamei juveniles in biofloc technology (BFT). Two treatments, dextrose and molasses, were tested with four replicates each. Carbon was added to achieve a C:N-AT (N-(NH3+NH4+)) ratio of 6:1. Physical and chemical water quality variables were monitored daily, and shrimp growth was estimated through periodic biometry. After 30 days, survival, final biomass, and feeding conversion rate (FCR) were determined. Dissolved organic carbon, chlorophyll-a, floc volume, total ammonia, nitrite, nitrate and phosphate concentrations, and microorganisms (qualified by groups), were measured every three days. Water quality variables remained within acceptable levels throughout the experimental period, except for nitrite, which reached higher levels than recommended for this species. The use of dextrose resulted in higher water transparency, which influenced the remaining centric diatoms. A superior shrimp performance was observed at this treatment, presumably because of variations on the microbial community. Therefore, it is concluded that the addition of dextrose results in a superior growth performance of L. vannamei when cultured in BFT systems.

Palabras clave : Litopenaeus vannamei; bioflocs; nitrogen; microorganisms; microalgae; aquaculture.

        · resumen en Español     · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons