Effects of nitrate toxicity in the Pacific white shrimp, Litopenaeus vannamei, reared with biofloc technology (BFT)

Furtado, Plínio Schmidt; Campos, Bruno Ribeiro de; Serra, Fabiane P.; Klosterhoff, Marta da Costa; Romano, Luís Alberto; Wasielesky, Wilson

doi:10.1007/s10499-014-9817-z

Cited by 99 publications

(49 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The mean values obtained for ammonia, nitrite and nitrate remained within the range considered as safe for the performance and survival of the shrimp (Lin & Chen, 2001, 2003Furtado et al, 2015).…”

Section: Discussionsupporting

confidence: 53%

Addition of sodium nitrite and biofilm in a Litopenaeus vannamei biofloc culture system

Lara

Furtado

Hostins

et al. 2016

lajar

View full text Add to dashboard Cite

ABSTRACT. This study evaluates the effects of the previous addition of sodium nitrite (NaNO2) and biofilm in a Litopenaeus vannamei biofloc culture. Five treatments were tested in 180 L -tanks: NaNO2 (-20) addition of NaNO2 for 20 days before stocking and without artificial substrates; NaNO2+B (-20) addition of NaNO2 for 20 days before stocking, with 150% additional artificial substrates; NaNO2 (Stocking) addition of NaNO2 at stocking and no artificial substrates; NaNO2 +B (Stocking) addition of NaNO2 at stocking, with 150% additional artificial substrates and; Control, without NaNO2 addition and without artificial substrates. The study was carried out in two phases: shrimps (0.21 ± 0.08 g) were stocked at a density of 400 ind m ) for 18 more days (grow-out). The turbidity and seattleable solids were higher in treatments without artificial substrates, independently of the addition of NaNO2. The ammonia and nitrite were lower in control, and the nitrate concentrations were higher in treatments with addition of NaNO2 without biofilm. At the end of the nursery, the survival was lower in treatment NaNO2 (-20), and at the end of grow-out the final biomasses were higher in treatments with addition of NaNO2 at the stocking day. In conclusion, the use of a dose of NaNO2 at the stocking day could increase the nitrite-oxidizing bacteria, and the biofilm may contribute to the reduction in suspended particles in water, enhancing shrimp production in biofloc technology system. Keywords: Litopenaeus vannamei, shrimp, biofloc, nitrogen, artificial substrates. Adición de nitrito de sodio y biofilm a un sistema de cultivo biofloc deLitopenaeus vannamei RESUMEN. Se evaluó los efectos de la adición previa de nitrito de sodio (NaNO2) y biofilm al cultivo de Litopenaeus vannamei en sistema biofloc. Se analizaron cinco tratamientos en estanques de 180 L: NaNO2 (-20) adición de NaNO2 durante 20 días antes de la siembra y sin sustratos artificiales; NaNO2+B (-20) adición de NaNO2 durante 20 días antes de la siembra y con 150% de adición de sustratos artificiales; NaNO2 (Stocking) adición de NaNO2 en la siembra y sin sustratos artificiales; NaNO2 +B (Stocking) adición de NaNO2 en la siembra y con 150% de adición de sustratos artificiales; Control sin adición de NaNO2 y sin substratos artificiales. La densidad de siembra utilizada inicialmente fue de 400 ind m -2 / 1.100 ind m -3 durante 30 días (precría). Después de este periodo, los camarones fueron sembrados a 120 ind m -2 /400 ind m -3 por más de 18 días (engorde). La turbidez y los sólidos sedimentables fueron más elevados en los tratamientos sin sustratos artificiales, independientemente de la adición del NaNO2. Las concentraciones de amonio y nitrito fueron inferiores en el control, y las concentraciones de nitrato fueron mayores con la adición de NaNO2 y sin sustratos artificiales. Después del periodo de pre-cría, la supervivencia fue menor en el tratamiento NaNO2 (-20), y al final del período de engorde las biomasas fueron más altas en los tratamientos con adición de NaNO2 en la...

show abstract

Section: Discussionsupporting

confidence: 53%

Addition of sodium nitrite and biofilm in a Litopenaeus vannamei biofloc culture system

Lara

Furtado

Hostins

et al. 2016

lajar

View full text Add to dashboard Cite

show abstract

“…In this study, although the average concentrations of nitrite have been higher in the BL treatment, it is important to highlight that due to the duration of the rearing (33 days), it cannot follow a complete nitrification process that normally occurs in the BFT systems, leading only to a final high concentration of nitrate. Furtado et al (2015b) indicate acceptable concentrations of nitrate up to 177 mg L -1 in BFT culture. The values observed in this study did not reach this concentration, which do not affect the shrimp growth.…”

Section: Discussionmentioning

confidence: 96%

The use of different aerators on Litopenaeus vannamei biofloc culture system: effects on water quality, shrimp growth and biofloc composition

et al. 2016

Self Cite

View full text Add to dashboard Cite

This study evaluated the effects of different aeration types on water quality, shrimp growth and biofloc composition in a Litopenaeus vannamei culture. The study was conducted with three treatments: (1) PR-propeller aspirator pump aerator; (2) VP-vertical pump aerator; and (3) BL-diffused air blower. The study was performed in a greenhouse with nine 35,000-L rectangular tanks. Water quality parameters (temperature, salinity, dissolved oxygen, pH, ammonia, nitrite, nitrate, settleable and suspended solids) were measured along the 33 experimental days. Moreover, samples were collected to quantify the microorganisms present in the tanks. At the end of the study, samples of the biofloc of each tank were collected to proximal analysis. Throughout the experiment, the temperature, pH, salinity and alkalinity were maintained within the recommended levels for L. vannamei. The propeller treatment showed a concentration of total ammonia above the recommended levels and lower densities of ciliates and flagellates, most likely because of inadequate biofloc formation in this treatment. The final weight was higher in the blower and propeller treatments. However, survival was lower in the propeller treatment compared to the other treatments. The results of this study suggest that diffused air systems (air blower) improve the formation of biofloc and growth performance of L. vannamei.

show abstract

“…Dissolved oxygen and pH in the tanks also remained within the recommended levels for L. vannamei (Furtado et al, ; Van Wyk & Scarpa, ; Zhang, Pan, Chen, & Wang, ). Likewise, the other water quality variables (ammonia, nitrite, nitrate, alkalinity, salinity, biofloc volume and total suspended solids) were at concentrations considered ideal for the culture of L. vannamei (Furtado et al, ; Furtado et al ; Gaona, Almeida, Viau, Poersch, & Wasielesky, ; Lin & Chen ; Lin & Chen ; Maicá , Borba, & Wasielesky, ).…”

Section: Discussionmentioning

confidence: 99%

Effect of feeding frequency on growth and digestive enzyme activity in Litopenaeus vannamei during the grow‐out phase in biofloc system

et al. 2019

View full text Add to dashboard Cite

The present study evaluated the effects of feeding frequency during the grow‐out phase of Litopenaeus vannameiin biofloc system. The experiment comprised of four treatments with three replicates each, corresponding to the following feeding frequencies: one (8:00 a.m.), two (8:00 a.m. and 4:00 p.m.), three (8:00 a.m., 12:00 p.m. and 4:00 p.m.) and four times a day (8:00 a.m., 10:00 a.m., 12:00 p.m. and 4:00 p.m.). Zootechnical performance and digestive enzyme activity were monitored for 63 days. At the end of the experiment, the highest survival rates were found for the individuals fed three and four times a day. Wet weight gain (6.63 g) and specific growth rate (3.46% per day) of the individuals fed three times a day were significantly higher compared to animals fed one and four times a day, but did not differ significantly to the group fed twice a day (6.15 g and 3.46% per day, respectively). The digestive enzyme activities were not affected by the feeding frequency, but negative correlations were found between these activities and shrimp weight. It is recommended that L. vannamei should be fed three times a day during the grow‐out phase in a biofloc system under the conditions used in this study.

show abstract

Effects of nitrate toxicity in the Pacific white shrimp, Litopenaeus vannamei, reared with biofloc technology (BFT)

Cited by 99 publications

References 26 publications

Addition of sodium nitrite and biofilm in a Litopenaeus vannamei biofloc culture system

Addition of sodium nitrite and biofilm in a Litopenaeus vannamei biofloc culture system

The use of different aerators on Litopenaeus vannamei biofloc culture system: effects on water quality, shrimp growth and biofloc composition

Effect of feeding frequency on growth and digestive enzyme activity in Litopenaeus vannamei during the grow‐out phase in biofloc system

Contact Info

Product

Resources

About