Effects of organic carbon sources on water quality, microbial flocs protein and performance of Macrobrachium rosenbergii post‐larvae reared in biofloc and synbiotic systems

Different strategies for supplying organic carbon in biofloc and synbiotic were tested for Macrobrachium rosenbergii port‐larvae (PL). The prawn (0.01 ± 0.002 g) were stocked (0.8 PL L−1) during 35 days in an experimental design with five treatments and four replicates: Ct = control; M = molasses (B...

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Veröffentlicht in:Aquaculture research 2022-02, Vol.53 (2), p.388-397
Hauptverfasser: Santos, Robson Batista, Coelho Filho, Petrônio Alves, Gonçalves, Alex Pereira, Santos, Rafaela Alves, Lins Rodrigues, Mariana, Souza Correia, Eudes, Oliveira, Valdemir Queiroz, Brito, Luis Otavio
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container_issue 2
container_start_page 388
container_title Aquaculture research
container_volume 53
creator Santos, Robson Batista
Coelho Filho, Petrônio Alves
Gonçalves, Alex Pereira
Santos, Rafaela Alves
Lins Rodrigues, Mariana
Souza Correia, Eudes
Oliveira, Valdemir Queiroz
Brito, Luis Otavio
description Different strategies for supplying organic carbon in biofloc and synbiotic were tested for Macrobrachium rosenbergii port‐larvae (PL). The prawn (0.01 ± 0.002 g) were stocked (0.8 PL L−1) during 35 days in an experimental design with five treatments and four replicates: Ct = control; M = molasses (BFT); Mf = molasses pre‐treated with Bacillus spp. without and with aeration (synbiotic); RB = rice bran (BFT); and RBf = raw rice bran pre‐treated with Bacillus spp., without and with aeration (synbiotic). The prawns were fed five times a day with a feed containing 40% crude protein. Water quality variables remained within the range considered suitable for the species, and the synbiotic reduced the mean values of settleable solids. The protein content of microbial flocs (dry weight) differed among RBf (34.07 ± 0.54%) and RB (29.77 ± 0.48%), but was higher in M (43.27 ± 0.76%). The prawns submitted to RBf presented the best combination of results for variables final weight (122.85 ± 12.50 mg) and weekly weight gain (22.26 ± 2.97 mg). Thus, RBf treatments (synbiotic) in addition to maintaining water quality variables at acceptable levels can improve growth of M. rosenbergii post‐larvae.
doi_str_mv 10.1111/are.15580
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The prawn (0.01 ± 0.002 g) were stocked (0.8 PL L−1) during 35 days in an experimental design with five treatments and four replicates: Ct = control; M = molasses (BFT); Mf = molasses pre‐treated with Bacillus spp. without and with aeration (synbiotic); RB = rice bran (BFT); and RBf = raw rice bran pre‐treated with Bacillus spp., without and with aeration (synbiotic). The prawns were fed five times a day with a feed containing 40% crude protein. Water quality variables remained within the range considered suitable for the species, and the synbiotic reduced the mean values of settleable solids. The protein content of microbial flocs (dry weight) differed among RBf (34.07 ± 0.54%) and RB (29.77 ± 0.48%), but was higher in M (43.27 ± 0.76%). The prawns submitted to RBf presented the best combination of results for variables final weight (122.85 ± 12.50 mg) and weekly weight gain (22.26 ± 2.97 mg). Thus, RBf treatments (synbiotic) in addition to maintaining water quality variables at acceptable levels can improve growth of M. rosenbergii post‐larvae.</abstract><cop>Oxford</cop><pub>Hindawi Limited</pub><doi>10.1111/are.15580</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-6971-3020</orcidid><orcidid>https://orcid.org/0000-0002-8203-7864</orcidid><orcidid>https://orcid.org/0000-0003-4957-9626</orcidid><oa>free_for_read</oa></addata></record>
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source Wiley Online Library Journals Frontfile Complete
subjects Aeration
Bacillus
Biofloc technology
bioflocs
Carbon sources
Decapoda
Design of experiments
Dry weight
Experimental design
Freshwater crustaceans
Larvae
Macrobrachium rosenbergii
Marine crustaceans
Microorganisms
Molasses
Organic carbon
Prawns
pre‐treated
Proteins
Rice
rice bran
Settleable solids
synbiotic
Syrups & sweeteners
Water quality
Weekly
title Effects of organic carbon sources on water quality, microbial flocs protein and performance of Macrobrachium rosenbergii post‐larvae reared in biofloc and synbiotic systems
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