Application of different doses of calcium hydroxide in the farming shrimp Litopenaeus vannamei with the biofloc technology (BFT)

Furtado, Plínio Schmidt; Gaona, Carlos Augusto Prata; Poersch, Luís; Wasielesky, Wilson

doi:10.1007/s10499-013-9723-9

Cited by 38 publications

(24 citation statements)

References 24 publications

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“…Hydrated lime (Ca(OH) 2 ) was added at 10% (by weight) of the daily feed allotment throughout the study to maintain the alkalinity at about 100 mg/L and pH 7.5 (Furtado et al, 2013).…”

Section: Experimental Conditionsmentioning

confidence: 99%

Effects of two commercial feeds with high and low crude protein content on the performance of white shrimp Litopenaeus vannamei raised in an integrated biofloc system with the seaweed Gracilaria birdiae

Brito

Leonidas

Abreu

et al. 2018

Span. j. agric. res.

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A trial was conducted for 42 days to evaluate the effects of two commercial feeds with high and low crude protein content on the performance of white shrimp Litopenaeus vannamei cultivated in an integrated biofloc system with the seaweed Gracilaria birdiae. The experiment had a 2 × 2 factorial design (a biofloc monoculture or an integrated system with 32% (low) or 40% (high) crude protein content) with the following treatments: IS32 (an integrated system using low protein commercial feed); IS40 (an integrated system using high protein commercial feed); M32 (a monoculture system using low protein commercial feed); and M40 (a monoculture system using high protein commercial feed), all in triplicate. Shrimp individuals (0.23 ± 0.04 g) were stocked at a density of 500 shrimp/m 3 and no water exchange was carried out during the experimental period. No significant influence (p > 0.05) was found to be caused by the integrated system or the crude protein levels on water quality. However, a significant influence (p < 0.05) was found for final weight (3.21-4.12 g), weight gain (2.97-3.89 g), yield (1.39-1.96 kg/m 3 ) and feed conversion ratio (1.47-1.74). Growth was similar in IS32, M40 and IS40, indicating that crude protein levels can be reduced with no adverse effect on shrimp performance variables in integrated biofloc systems with G. birdiae.Additional keywords: growth; nutrition; seaweed; shrimp; water quality. Abbreviations used: FCR (feed conversion ratio); IS32 (an integrated system using low protein commercial feed); IS40 (an integrated system using high protein commercial feed); M32 (a monoculture system using low protein commercial feed); M40 (a monoculture system using high protein commercial feed); PL (postlarvae); TSS (total suspended solids).Authors' contributions: All authors contributed equally to this work (conception; acquisition, analysis, interpretation of data; drafting of the manuscript; critical revision of the manuscript and statistical analysis).Citation: Brito, L. O.; Junior, L. C.; Abreu, J. L.; Severi, W.; Moraes, L. B. S.; Galvez, A. O. (2018). Effects of two commercial feeds with high and low crude protein content on the performance of white shrimp Litopenaeus vannamei raised in an integrated biofloc system with the seaweed Gracilaria birdiae.

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“…Hydrated lime (Ca(OH) 2 ) was added at 10% (by weight) of the daily feed allotment throughout the study to maintain the alkalinity at about 100 mg/L and pH 7.5 (Furtado et al, 2013).…”

Section: Experimental Conditionsmentioning

confidence: 99%

Effects of two commercial feeds with high and low crude protein content on the performance of white shrimp Litopenaeus vannamei raised in an integrated biofloc system with the seaweed Gracilaria birdiae

Brito

Leonidas

Abreu

et al. 2018

Span. j. agric. res.

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“…However, silica lye is a good alternative for increasing the pH when reducing the toxicity of aluminium is needed [54]. Furtado et al [55] applied calcium hydroxide to a bio-floc system. Calcium hydroxide of around 10%-20% of the daily feed offered was applied, which increased the pH and alkalinity levels in aquaculture systems without causing negative effects on the bacterial community present in a bio-floc system.…”

Section: Hydroxidesmentioning

confidence: 99%

Taxonomy of Means and Ends in Aquaculture Production—Part 2: The Technical Solutions of Controlling Solids, Dissolved Gasses and pH

Vilbergsson

Oddsson

Unnþórsson

2016

Water

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Abstract:In engineering design, knowing the relationship between the means (technique) and the end (desired function or outcome) is essential. The means in Aquaculture are technical solutions like airlifts that are used to achive desired functionality (an end) like controlling dissolved gasses. In previous work, the authors identified possible functions by viewing aquaculture production systems as transformation processes in which inputs are transformed by treatment techniques (means) and produce outputs (ends). The current work creates an overview of technical solutions of treatment functions for both design and research purposes. A comprehensive literature review of all areas of technical solutions is identified and categorized into a visual taxonomy of the treatment functions for controlling solids, controlling dissolved gasses and controlling pH alkalinity and hardness. This article is the second in a sequence of four and partly presents the treatments functions in the taxonomy. The other articles in this series present complementary aspects of this research: Part 1, A transformational view on aquaculture and functions divided into input, treatment and output functions; Part 2, The current taxonomy paper; Part 3, The second part of the taxonomy; and Part 4, Mapping of the means (techniques) for multiple treatment functions.

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“…This way, sensitive species are protected from DO variations. The consumption of alkalinity by heterotrophic and nitrifying bacteria present in bio-floc causes a reduction in alkalinity and pH in the system [53]. The taxonomy (Figure 11) classifies bio-floc either as inside or outside the culture unit.…”

Section: Bio-floc Treatmentmentioning

confidence: 99%

Taxonomy of Means and Ends in Aquaculture Production—Part 3: The Technical Solutions of Controlling N Compounds, Organic Matter, P Compounds, Metals, Temperature and Preventing Disease

Vilbergsson

Oddsson

Unnþórsson

2016

Water

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This is the third part of the taxonomy of technical solutions and treatment functions in aquaculture. This article builds on the premiss that the aquaculture production system can be viewed as a transformation process with three sets of functions, input, treatment and output. This work creates an overview of all of the technical solutions of treatment functions for the purpose of both design and further research. This is done with a comprehensive literature review where all technical solutions are identified and then categorized into a taxonomy. The result is a visual taxonomy of the treatment functions controlling N compounds, organic matter, P compounds, metals, temperature and preventing disease. A total taxonomy is finally presented where the results from Part 2 and Part 3 (this part) have been combined.

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Application of different doses of calcium hydroxide in the farming shrimp Litopenaeus vannamei with the biofloc technology (BFT)

Cited by 38 publications

References 24 publications

Effects of two commercial feeds with high and low crude protein content on the performance of white shrimp Litopenaeus vannamei raised in an integrated biofloc system with the seaweed Gracilaria birdiae

Effects of two commercial feeds with high and low crude protein content on the performance of white shrimp Litopenaeus vannamei raised in an integrated biofloc system with the seaweed Gracilaria birdiae

Taxonomy of Means and Ends in Aquaculture Production—Part 2: The Technical Solutions of Controlling Solids, Dissolved Gasses and pH

Taxonomy of Means and Ends in Aquaculture Production—Part 3: The Technical Solutions of Controlling N Compounds, Organic Matter, P Compounds, Metals, Temperature and Preventing Disease

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