Primary Nutritional Content of Bio-Flocs Cultured with Different Organic Carbon Sources and Salinity

By J. Ekasari, R. Crab, W. Verstraete. 2010

197 citations recorded by the source corpus.

Application of bio-flocs technology (BFT) in aquaculture offers a solution to avoid environmental impact of high nutrient discharges and to reduce the use of artificial feed. In BFT, excess of nutrients in aquaculture systems are converted into microbial biomass, which can be consumed by the cultured animals as a food source. In this experiment, upconcentrated pond water obtained from the drum filter of a freshwater tilapia farm was used for bio-flocs reactors. Two carbon sources, sugar and glycerol, were used as the first variable, and two different levels of salinity, 0 and 30 ppt, were used as the second variable. Bio-flocs with glycerol as a carbon source had higher total n-6 PUFAs (19.1 ± 2.1 and 22.3 ± 8.6 mg/g DW at 0 and 30 ppt, respectively) than that of glucose (4.0 ± 0.1 and 12.6 ± 2.5 mg/g DW at 0 and 30 ppt). However, there was no effect of carbon source or salinity on crude protein, lipid, and total n-3 PUFAs contents of the bio-flocs.

Subfields: Aquatic Science

View Paper: https://www.semanticscholar.org/paper/3a8490457691d8c0dd043785e080cf319e3c9498

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In Aquatic Science

1. G. Cuzon
2. G. Gaxiola
3. Anli Wang
4. S. Maryam
5. Yan-fang Wei
6. M. Emerenciano
7. Shaoan Liao
8. Widanarni

Citations in the corpus

• The utilization of sodium bicarbonate, calcium carbonate or hydroxide in biofloc system: water quality, growth performance and oxidative stress of Nile tilapia (Oreochromis niloticus) (2017, background): “However, the ash content was more elevated and previous researcheswithNile tilapia have demonstrated ash values between 7 and 40% (Azim et al., 2007; Ekasari et al., 2010; López-Elías and Moreno-Arias, 2015).”
• Floc contribution on spawning performance of blue shrimp Litopenaeus stylirostris (2012, background): “Scale are given by *, ** and *** that represent low, intermediate and high levels or effects; DO, dissolved oxygen;1 Ju et al. (2008); 2Azim and Little (2008), Crab et al. (2010) and Ekasari et al. (2010); ?, unclear levels.”
• Evaluation of Biofloc Technology Application on Water Quality and Production Performance of Red Tilapia Oreochromis sp. Cultured at Different Stocking Densities (2012, background): “The effect of biofloc on reproduction of aquatic organism has been recorded recently, where blue shrimp broodstock cultured in bioflocs system showed a better spawning performance than that of earthen pond (Emerenciano et al. 2011).”
• Effect of dietary supplementation of biofloc on growth performance and digestive enzyme activities in Penaeus monodon (2013, result): “The lower crude protein level noticed in the harvested biofloc compared to earlier findings (Crab et al., 2010; Ekasari et al., 2010)may be due to differences in bacteria taking part in floc formation (Rittmann and McCarty, 2001).”
• The effect of different carbon sources on the nutritional composition, microbial community and structure of bioflocs (2016, background): “It can provide nutrients such as “native protein” (Emerenciano et al., 2011), lipids (Wasielesky et al., 2006), amino acids (Ju et al., 2008) and fatty acids (Izquierdo et al., 2006; Ekasari et al., 2010) in the form of diverse microorganisms.”