Cultivo De Camarões Em Sistema De Bioflocos No Brasil: Uma Alternativa Sustentável Às Intensificações Na Aquicultura

Costa, Bruna Bitencourt da; Júnior, Danilo Pedro Streit

doi:10.32360/acmar.v51i2.20507

Cited by 3 publications

(1 citation statement)

References 37 publications

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“…Intensive systems are characterized by high-stocking densities (25-300 fish m −3 ), which affect growth performance [5,11,[13][14][15][16][17][18]. Therefore, an important management factor is to select the optimal stocking density in the three tilapia (nursery, pre-grow-out, and grow-out) culture stages, because this factor determines growth and other productive variables of economic interest [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Modeling Nile Tilapia Heterogeneous Growth under Different Stocking Densities during Pre-Grow-Out Stage

Fuentes-Andraca,

Araneda-Padilla,

Domínguez-May

et al. 2023

Aquaculture Research

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The heterogeneous and homogeneous growth (HmG) assumptions in an intensive tilapia Oreochromis niloticus pre-grow-out production were evaluated under the different stocking scenarios. Four growth models (von Bertalanffy, Logistic, Pütter, and Gompertz) were tested and modified to include the effect of stocking density and growth difference. Models with homogeneous growth were fitted using a nonlinear regression, while heterogeneous growth (HtG) models were parameterized using quantile (0.05, 0.15, 0.25, 0.50, 0.75, 0.85, and 0.95) regression. According to goodness of fit and validation, the models that best fit homogeneous and HtG were Logistic and von Bertalanffy, respectively, which confirm the existence of the dense dependency effect on growth performance. Density and growth have an inversely proportional relationship. Quantile regression provided greater efficiency in predicting growth of the different groups of individuals in the population. The results obtained can be used by the aquaculture farmer to select stocking management strategies and optimal transfer time for tilapia juveniles.

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Section: Introductionmentioning

confidence: 99%

Modeling Nile Tilapia Heterogeneous Growth under Different Stocking Densities during Pre-Grow-Out Stage

Fuentes-Andraca,

Araneda-Padilla,

Domínguez-May

et al. 2023

Aquaculture Research

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Aquaponia

Souza

Oliveira²,

Nakauth

et al. 2022

Nexus - Revista De Extensão Do IFAM

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Esse relato de experiência tem como objetivo apresentar o sistema aquapônico, um sistema de produção agroalimentar que integra a hidroponia com a aquicultura: suas características, componentes principais e formas de montagem, além da sua aplicação como ferramenta didática. Em seguida são apresentados os relatos de uso e aplicação do sistema em atividades de ensino, pesquisa e extensão nos campi do IFAM de São Gabriel da Cachoeira, Itacoatiara, Parintins e Manacapuru. Essas atividades vêm sendo desenvolvidas nos campi do IFAM desde o ano de 2010 e tem como resultados projetos de iniciação científica, Projetos de Conclusão de Curso Técnico, ações de extensão e divulgação da Ciência e Tecnologia.

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The Effects of Predominantly Chemoautotrophic Versus Heterotrophic Biofloc Systems on Nitrifying Bacteria, Planktonic Microorganisms, and Growth of Penaeus vannamei, and Oreochromis niloticus in an Integrated Multitrophic Culture

Sena,

Krummenauer,

Wasielesky

et al. 2024

Fishes

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The aim of this study was to evaluate the effect of predominantly chemoautotrophic and heterotrophic biofloc systems on ammonia-oxidizing bacteria (AOB), nitrite-oxidizing bacteria (NOB), and planktonic microorganisms in an integrated Penaeus vannamei and Oreochromis niloticus integrated multitrophic culture. Shrimp and tilapia were stocked at a density of 400 shrimp m−2 and 45 fish m−3, respectively. The trial consisted of two biofloc treatments, with three replicates each: chemoautotrophic and heterotrophic. The identification and quantification of the planktonic microorganisms (ciliates, flagellates, microalgae, and total bacteria) and nitrifying bacteria were carried out through direct counting and fluorescence in situ hybridization, respectively. At the end of the trial, heterotrophic treatment had resulted in higher total abundance of bacteria. The relative abundance of AOB and NOB in relation to the total abundance was less than 0.1% for both treatments. The system was dominated by flagellates in both treatment groups. The abundance of microalgae and ciliates was higher with chemoautotrophic treatment. After 43 days, the shrimp weights were higher in the chemoautotrophic group, while the final weights of the tilapia were not significantly different between the two treatments. The type of biofloc system (Chemoautotrophic vs. Heterotrophic) did not significantly alter the establishment of AOB and NOB in a Penaeus vannamei and Oreochromis niloticus integrated multitrophic culture. The two treatments proved to be equally efficient for maintaining good water quality, but the chemoautotrophic treatment resulted in better shrimp growth. Thus, our study demonstrated that chemoautotrophic biofloc is a promising approach in integrated multitrophic aquaculture.

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Cultivo De Camarões Em Sistema De Bioflocos No Brasil: Uma Alternativa Sustentável Às Intensificações Na Aquicultura

Cited by 3 publications

References 37 publications

Modeling Nile Tilapia Heterogeneous Growth under Different Stocking Densities during Pre-Grow-Out Stage

Modeling Nile Tilapia Heterogeneous Growth under Different Stocking Densities during Pre-Grow-Out Stage

Aquaponia

The Effects of Predominantly Chemoautotrophic Versus Heterotrophic Biofloc Systems on Nitrifying Bacteria, Planktonic Microorganisms, and Growth of Penaeus vannamei, and Oreochromis niloticus in an Integrated Multitrophic Culture

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