Antioxidant and oxidative damage responses in different organs of Pacific white shrimpLitopenaeus vannamei(Boone, 1931) reared in a biofloc technology system

Abstract

Shrimp (Litopenaeus vannamei) reared in a conventional seawater (SW) aquarium system SW were compared with those raised in a biofloc technology (BFT) system. After 30 days, the L. vannamei shrimp were euthanized and samples of gills, hepatopancreas and muscle were dissected. Statistical analysis was performed using bi-factorial ANOVA, with the factors of the treatment (shrimp reared in SW or in a BFT system) and organs (gills, hepatopancreas and muscles). No differences (p > 0.05) in glutathione-S-transferase activity were observed between shrimp reared in SW and shrimp reared in BFT (p < 0.05). Glutathione levels were lower (p < 0.05) in the gills and hepatopancreas of shrimp reared in the BFT system, suggesting changes in the antioxidant composition of these organs. Lipid peroxidation levels were higher in the hepatopancreas than in muscle in shrimp reared in SW (p < 0.05) and this difference was not observed in organisms reared in the BFT system (p > 0.05). Overall, the results showed that rearing shrimp in the BFT system altered both their antioxidant and oxidative damage responses. This indicates that some microbial communities in BFT systems can influence the redox state of L. vannamei.

Effect of biofloc technology on water quality and feed utilization in the cultivation of gibel carp (Carassius auratus gibeliovar. CAS III)

“…The PRE and PhRE of P24 + B and P29 + B were higher than those of P34 + B and P34, and the SGR and FCR of P34 were also higher than P34 + B. Some previous studies had also demonstrated similar results that biofloc did not improve the growth performance of cultured animals (Dauda et al, 2018;Kumar et al, 2017;Little et al, 2008;Martins, Flores, Porto, Wasielesky, & Monserrat, 2015;Nootong, Pavasant, & Powtongsook, 2011). Above all, the water quality of high-protein fed tanks was worse than that of low-protein fed tanks in the biofloc-based system Xu, Pan, Zhao, et al, 2012).…”

“…Some previous studies had also demonstrated similar results that biofloc did not improve the growth performance of cultured animals (Dauda et al, 2018;Kumar et al, 2017;Little et al, 2008;Martins, Flores, Porto, Wasielesky, & Monserrat, 2015;Nootong, Pavasant, & Powtongsook, 2011). Some previous studies had also demonstrated similar results that biofloc did not improve the growth performance of cultured animals (Dauda et al, 2018;Kumar et al, 2017;Little et al, 2008;Martins, Flores, Porto, Wasielesky, & Monserrat, 2015;Nootong, Pavasant, & Powtongsook, 2011).…”

Use of biofloc technology in shrimp aquaculture: a comprehensive review, with emphasis on the last decade

“…Biofloc microbial communities can also affect the antioxidant and oxidative damage responses in shrimp grown in BFT system. For instance, glutathione (GSH) concentration in the gills and hepatopancreas was lower in BFT-raised L. vannamei than in those reared in traditional, seawater system (da Silva Martins et al 2015). Glutathione peroxidase was upregulated only in BFT group; superoxide dismutase (SOD) expression was lower in BFT-reared shrimp than those grown in recirculating system without biofloc (Soto-Alcal a et al 2019).…”

Growth, antioxidant system, and immunological status of shrimp in bioflocs and clear water culture systems

“…Based on its composition characteristics, bioflocs should present an antioxidant activity (Ju et al, 2008;Martins et al, 2015) and also stimulate digestive enzyme activities, improving feed utilization and increasing dietary antioxidant assimilation.…”

“…The assimilation of nitrogen compounds by heterotrophic bacteria in BFT allows the same water to be used for several production cycles with no negative environmental impact (Krummenauer, 2014). In addition, the BFT system can promote an enhancement in the immune cellular response and antioxidant status of shrimp Martins et al, 2015). The immune and antioxidant systems play an important role in animal physiology and are crucial to control their health and growth performance.…”