Zootechnical performance, biochemical response, and chromaticity in Pacific white shrimp (Litopenaeus vannamei) (Boone, 1931) after the inclusion of lyophilized açaí (Euterpe oleracea) in the diet

Effects of Lyophilized Açaí (Euterpe oleracea) Supplementation on Oxidative Damage and Intestinal Histology in Juvenile Shrimp Penaeus vannamei Reared in Biofloc Systems

“…The results of the present study demonstrated that the daily addition of 80 mg açaí L −1 to P. vannamei cultivation in a BFT system increased ammonia levels and decreased nitrate concentrations (Table 1), corroborating the results observed by Colombo et al [27]. Considering the protein content of açaí-8.1% to 10.5% [7,26]ally to the ration provided, it is possible that the ingestion of both by shrimp in the 80 mg açaí L −1 treatment contributed to an increase in ammonia excretion [46][47][48]. Another hypothesis is the possible inhibition of the action of nitrifying bacteria owing to the action of antioxidants present in the fruit.…”

“…Similar values have been reported by Wasielesky et al [21], Fernandes Da Silva et al [52], and Reis et al [53] that reported 44.85%, 45.50%, and 53.68% of ash in bioflocs from the cultivation of P. vannamei juveniles, respectively. According to studies by Silva et al [26] and Odendaal and Schauss [7] the pulp of lyophilized açaí has an ash content of around 3.03% to 3.80%. In this context, the gradual decrease in the ash content of the bioflocs from the 20 mg açaí L −1 treatment was due to the accumulation of lyophilized açaí in the BFT system, which was incorporated into the biomass of the bioflocs.…”

“…Recently, studies have been conducted on the application of lyophilized açaí in biofloc systems. In a study by Silva et al [26], açaí was included directly in the diet composition of P. vannamei juveniles, at four concentrations tested (control, 2.5%, 5.0%, and 10.0% w/w). Although there were no effects on growth, the accumulation of flavonoids in the bioflocs and gills of the 5.0% açaí treatment group demonstrated the ability of bioflocs to absorb the antioxidants present in this fruit.…”

The role of açaí ( Euterpe oleracea Mart. 1824) as a chemoprotective agent in the evaluation of antioxidant defence, oxidative damage and histology of juvenile shrimp Litopenaeus vannamei (BOONE, 1931) exposed to ammonia

“…The results of the growth parameters indicated that the use of açaí was not a limiting factor for the development of L. vannamei since there were no differences between the parameters and survival was 98% for both treatments (Table ). Corroborating with these results, Silva et al (, submitted) did not observe significant differences in the growth and survival of L. vannamei fed with different levels of inclusion of açaí. It is important to highlight that in the present study, even the inclusion of açaí being concomitant with the reduction of fish oil used in the diet, the parameters of growth were not affected.…”

“…The experimental diets were prepared in isoproteic and isoenergetic form, with a protein content of 35% of crude protein and 9% of lipids (Table ). Two diets were formulated, one without the inclusion of açaí (control diet—CD) and another with the inclusion of the lyophilized açaí fruit (10% W/W) (açaí diet—AD), based on the study of Silva et al (, submitted). The açaí E. oleracea used in the ration was obtained from the Amazonia Comércio de Açaí Liofilizado e Exportação LTDA, located in Belém—PA, Brazil.…”