The effect of different carbon sources on the nutritional value of bioflocs, a feed for Macrobrachium rosenbergii postlarvae

By R. Crab, Bram Chielens, M. Wille, Peter Bossier, W. Verstraete. 2010

373 citations recorded by the source corpus.

A 15-day lab-scale experiment was performed to determine the possible use of bioflocs as a feed for Macrobrachium rosenbergii postlarvae. The bioflocs were grown on acetate, glycerol and glucose. A glycerol-fed reactor was initially inoculated with a Bacillus spores mixture. The highest protein content was obtained in the (glycerol+Bacillus) bioflocs, i.e. 58 +/- 9% dry weight (DW). The glycerol and acetate bioflocs showed a lower, but similar content (42-43% DW) and glucose bioflocs contained 28 +/- 3% DW. Higher total n-6 fatty acid contents were observed in the glycerol and (glycerol+Bacillus) bioflocs. The vitamin C content was variable, up to 54 mu g ascorbic acid g-1 DW in the glycerol bioflocs. Bioflocs were fed to M. rosenbergii postlarvae as the sole feed. High survival levels were obtained in the (glycerol+Bacillus) and glucose groups, i.e. 75 +/- 7% and 70 +/- 0% respectively. This was significantly higher than the starvation control (0% survival after 15 days). This indicated that the prawns were able to feed on the bioflocs. These results are in accordance with the biofloc's nutritional parameters and suggest that the choice of the carbon source used for growing bioflocs is of prime importance.

Subfields: Aquatic Science, Ecology

View Paper: https://www.semanticscholar.org/paper/3b51ba273d6a83883288b5139369018e59c99d76

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Citations in the corpus

Effect of dietary supplementation of biofloc on growth performance and digestive enzyme activities in Penaeus monodon (2013, methodology): “For instance, Crab et al. (2010) observed that biofloc developed from glycerol inoculated with Bacillus contained higher protein (58% CP) than biofloc developed fromglycerol, acetate (42–43% CP) and glucose (28%CP).”
Biofloc technology in aquaculture: Beneficial effects and future challenges (2012, background): “In addition to the advantages of biofloc technology discussed above, Crab et al. (2010b) have recently shown that biofloc technology constitutes a possible alternative measure to fight pathogenic bacteria in aquaculture.”
Biofloc contribution to antioxidant defence status, lipid nutrition and reproductive performance of broodstock of the shrimp Litopenaeus stylirostris: Consequences for the quality of eggs and larvae (2016, background): “Thus Crab et al. (2010), unlike in our study, found a lower lipid content (2.3 to 5.4% of DM) and only a trace of n-3 FA (0.4 to 0.7 mg.g-1).”
Evaluation of Biofloc Technology Application on Water Quality and Production Performance of Red Tilapia Oreochromis sp. Cultured at Different Stocking Densities (2012, background): “…friendly aquaculture system, and has been applied both at laboratory and commercial scale for various aquaculture species such as tilapia (Avnimelech 2007; Azim & Little 2008; Crab et al. 2009), shrimp (Burford et al. 2004; Hari et al. 2004; Taw 2010), sturgeon and snook (Serfling 2006).”
Biofloc Technology (BFT): A Tool for Water Quality Management in Aquaculture (2017, background): “[16] evaluated the effect of different carbon sources for Macrobrachium rosenbergii postlarvae.”