Effect of molasses addition at C:N ratio of 20:1 on the water quality and growth performance of giant freshwater prawn (Macrobrachium rosenbergii)

Miao, Shuyan; Sun, Longsheng; Bu, Hongyi; Zhu, Jinyu

doi:10.1007/s10499-017-0124-3

Cited by 19 publications

(14 citation statements)

References 40 publications

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“…The survival of giant prawn in the present study was in a range of 83 to 88% and was not significantly different amongst treatments ( p > 0.05). The growth and survival of the prawn in the present study were comparable to that reported in previous studies (Ballester et al, 2017; Miao et al, 2017; Pérez‐Fuentes et al, 2013). However, the final weight, specific growth rate, feed efficiency and protein retention of giant prawn housed in the control system without microalgae addition were higher than those with microalgae addition.…”

Section: Discussionsupporting

confidence: 92%

“…Giant prawn Macrobrachium rosenbergii is an important freshwater prawn species in Southeast Asia. Previous studies have reported that the application of biofloc technology in freshwater prawn culture could bring about beneficial effects on the prawn's growth and health performance, water quality and water utilization (Miao et al, 2017; Pérez‐Fuentes et al, 2013; Rohmana et al, 2014). This study aimed to evaluate the influence of microalgae addition in bioflocsystems on the physical characteristics and functionality of bioflocs, and the growth and health performance of giant prawn.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Chlorella sp. and Ankistrodesmus sp. addition on biofloc system performance in giant prawn culture

et al. 2021

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This study aimed to evaluate the influence of microalgae addition on the physical and functionality of bioflocs and the growth and health performance of giant prawn (Macrobrachium rosenbergii). Three biofloc‐based giant prawn culture systems were compared that is biofloc system without microalgae addition as a control, biofloc system with Chlorella sp. addition and biofloc system with Ankistrodesmus sp. addition. Giant prawn juveniles (2.00 ± 0.10 g) were randomly distributed into 12 units of outdoor fibre tanks (500 L in capacity) at a density of 40 juvenile per tank and maintained for 60 days. Molasses was added at an estimated C/N ratio of 6, and each microalga was added once a week at a density of about 105 cell/mL. The addition of microalgae in biofloc systems did not affect the prawn's survival and immune parameters as well as its robustness against hypoxia stress (p > 0.05). Alkalinity in the microalgae‐added biofloc systems was significantly higher (p < 0.05) than that of the control, whereas total ammonia nitrogen (TAN), nitrite, nitrate, total phosphate and dissolved phosphate were not significantly different amongst the treatments. The addition of Chlorella sp. and Ankistrodesmus sp. resulted in 11% and 18% higher size of biofloc particles, respectively, and altered the fatty acid profile of bioflocs, but did not affect the protein content. In conclusion, Chlorella sp. and Ankistrodesmus sp. addition could increase the particle size and alter the fatty acid profile of bioflocs, but did not affect the water quality and the growth performance of giant prawn in biofloc systems.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Evaluation of Chlorella sp. and Ankistrodesmus sp. addition on biofloc system performance in giant prawn culture

et al. 2021

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“…Our study indicates that addition of molasses improves shrimp pond water quality in terms of pH, heterotrophic bacterial numbers, inorganic nutrient concentrations and quality of bio-flocs. These data support possible application of molasses in P. vannamei farming as reported to be successfully applied in Penaeus monodon ( Panjaitan 2010 ) and Macrobrachium rosenbergii ( Miao et al . 2017 ).…”

Section: Discussionsupporting

confidence: 80%

“…Even though molasses did not increase total quantity of bio-flocs, it augmented carbohydrate contents in bio-flocs significantly. In shrimp aquaculture, molasses has been used to increase C/N ratio to form nutritive bio-flocs ( Avnimelech 2015 ; Miao et al . 2017 ).…”

Section: Discussionmentioning

confidence: 99%

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Addition of Molasses Ameliorates Water and Bio-Floc Quality in Shrimp Pond Water

Alfiansah¹,

Harder²,

Slater³

et al. 2022

TLSR

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Suspended particulate matter, phytoplankton and bacteria can be exploited to form larger aggregates, so-called bio-flocs. These serve as feeds for cultured shrimps, govern inorganic nutrients and load bacteria including pathogens. The current study aimed to simulate aggregate formation from available particulate matter in shrimp pond water and investigate quality of aggregates as well as possible impact to the pond water. Molasses was added to cylindrical tanks containing shrimp pond waters, and the tanks were rolled for 48 h. Besides water quality (inorganic nutrients and physical parameters), the researchers investigated and separated bacterial community compositions (BCC) to free-living (FL) and bio-flocs/particle-attached (PA) bacteria via 16S rRNA amplicon sequencing, and measured macro-molecules contents (carbohydrates, lipids and proteins) in the bio-flocs. Molasses addition increased bacterial numbers in the bio-flocs to two-fold higher than the FL’s. Moreover, potential probiotics such as Halomonas, Psychrobacter, Mesonia and Chromohalobacter were detected associated to bio-flocs and dominated the BCC. In contrast, bio-flocs without molasses showed 4-fold less carbohydrates and harboured elevated potential pathogens such as Vibrio and Alteromonas. Results show that molasses (at C/N ratio 1:2) increases pH (to 8.2 ± 0.09 and 8.0 ± 0.04 after 24 h and 48 h, respectively) in pond water, improving beneficial biofloc formation. Molasses also increased carbohydrates and proteins in bio-flocs and maintained abundances of beneficial bacteria resulting in low inorganic nutrient concentrations. Thus, molasses is suitable for shrimp farming to improve rearing processes.

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Improvement of biofloc quality and growth of Macrobrachium rosenbergii in biofloc systems by Chlorella addition

et al. 2021

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Effect of molasses addition at C:N ratio of 20:1 on the water quality and growth performance of giant freshwater prawn (Macrobrachium rosenbergii)

Cited by 19 publications

References 40 publications

Evaluation of Chlorella sp. and Ankistrodesmus sp. addition on biofloc system performance in giant prawn culture

Evaluation of Chlorella sp. and Ankistrodesmus sp. addition on biofloc system performance in giant prawn culture

Addition of Molasses Ameliorates Water and Bio-Floc Quality in Shrimp Pond Water

Improvement of biofloc quality and growth of Macrobrachium rosenbergii in biofloc systems by Chlorella addition

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