Influência da densidade de estocagem no cultivo de juvenis de robalo-flecha mantidos em laboratório

Souza-Filho, José Jerônimo de; Cerqueira, Vinícius Ronzani

doi:10.1590/s0100-204x2003001100010

Cited by 16 publications

(10 citation statements)

References 9 publications

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“…Snook, along with other heavily exploited commercial species such as Lutjanus (Lutjanidae) and Epinephelus (Serranidae), are candidates for aquaculture development, as pointed out by Souza-Filho and Cerqueira (2003). Thus, knowledge on such target commercial species is urgent for both management and aquaculture development.…”

Section: Preliminary Data On Common Snook Centropomus Undecimalis (Cmentioning

confidence: 99%

Local knowledge and training towards management

Begossi

2008

Environ Dev Sustain

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The urgency of managing marine resources is based on the fact that half of the world stocks are fully exploited, excluding those stocks that are already depleted. Artisanal fisheries in Brazil, both inland and coastal, are responsible for about half of the country's catches. Therefore, management of local artisanal fisheries is a necessity that provides an additional benefit, considering the observation that decentralization and the use of local ecological knowledge (LEK) in management have given better results than centralized, top-down management. In this study, a third system of knowledge-based on practice and training-is built from the local and scientific systems of knowledge, and a method to accomplish practical steps in local management is shown. Four elements are considered for the process of linking systems towards management: (1) an understanding of the natural environment of the fishery and on the use of natural resources by locals; (2) the knowledge of the marine area used by fishers, i.e., location of fishing spots for each species; (3) the understanding of fisher behavior, e.g., using tools from optimal foraging theory; and (4) the knowledge fishers have of the biology and ecology of species and their LEK, based on studies of the ethnobiology, ethnoecology, and ethnotaxonomy of fish. Considering the availability of publications on topics 1 and 2, illustrative cases are shown using optimal foraging models in Itaipu Beach, Rio de Janeiro and São Paulo Bagre, Cananéia, São Paulo, and using common snook, Centropomus undecimalis, as an example for a target species. Finally, local programs including training courses using both scientific and local knowledge are proposed within coastal artisanal fisheries.

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Section: Preliminary Data On Common Snook Centropomus Undecimalis (Cmentioning

confidence: 99%

Local knowledge and training towards management

Begossi

2008

Environ Dev Sustain

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“…Em uma simulação de custo de produção, esse acrescimento de 0,43 kg de ração para cada kg produzido com a Ração A pode representar uma diferença de custos com ração de R$ 17.200,00, considerando uma produção de 10 toneladas de peixe por ano e o preço da ração de R$ 4,00 por kg. Um estudo avaliando a influência da densidade de estocagem no cultivo de juvenis de robalo-flecha mantidos em laboratório encontrou taxas de conversão alimentar de 1,88, 2,06 e 2,30, inversamente proporcional à densidade de estocagem empregada (Souza-Filho & Cerqueira, 2003). Contudo, taxas de conversão alimentar próximas a 1, ou até inferiores, são reportadas por alguns autores para o robalo-flecha (Tucker Jr., 1987).…”

Section: Resultsunclassified

Desempenho Zootécnico E Rendimento De Filé Do Robalo-Flecha Alimentado Com Diferentes Dietas Comerciais

David

Pinho

Correia

et al. 2019

ACMAR

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O objetivo do trabalho foi avaliar o efeito de diferentes dietas comerciais no desempenho zootécnico, nos índices organossomáticos e no rendimento de carcaça e filé do robalo- flecha. Diferentes rações comerciais para peixes carnívoros foram comparadas: Ração A (46,6% PB e 9,8% EE) e Ração B (60,6% PB e 13,3% EE), na engorda do robalo-flecha. Foram estocados juvenis de robalo-flecha com peso inicial de 355,40 ± 52,30 g, à densidade.de 15 peixes m-3 (5,33 ± 0,12 kg m-3), sob salinidade de 15 g L-1, em três tanques de 200 L com três réplicas. Os tratamentos foram compostos por dois sistemas de recirculação de água independentes. Ao final do experimento, observaram-se diferenças significativas em todos.os parâmetros zootécnicos analisados, exceto comprimento padrão, com melhores resultados.para peixes alimentados com a Ração B. Para essa ração, os peixes atingiram peso.médio final de 501,10 ± 64,10 g, proporcionando o dobro de taxa de crescimento e melhor conversão alimentar aparente (1,17 ± 0,13), entretanto apresentaram maiores valores de gordura visceral e índice hepatossomático em relação à Ração A. Os rendimentos de carcaça e filé analisados não apresentaram diferenças significativas entre os tratamentos. Os resultados indicam que, nessas condições experimentais, a ração contendo 60,6% PB e 13,3% EE garante melhor desempenho zootécnico do robalo-flecha cultivado durante 42 dias na fase de engorda. Palavras-chave: piscicultura marinha, Centropomus undecimalis, nutrição, engorda.

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“…Disparities observed in the growth responses of C. undecimalis between studies can be attributed to differences in rearing methods, culture systems (i.e., stocking densities, green versus clear water), and fish body weight, which frequently results in hierarchical dominance and food competition. In general, there is a lack of scientifically rigorous studies on the nutritional requirements of this species, which further contributes to the variations observed in results (Tucker, 1987;Higby and Beulig, 1988;Bagley et al 1994;Souza-Filho and Cerqueira, 2003). However, the common snook reportedly shows superior performance in comparison with other fish species of the family Centropomidae (Rubio et al, 2003;Tucker and Kennedy, 2003;ZarzaMeza et al, 2006a,b).…”

Section: Discussionmentioning

confidence: 99%

Effect of dietary amino acid composition from proteins alternative to fishmeal on the growth of juveniles of the common snook, Centropomus undecimalis

Silvão

Nunes

2017

R. Bras. Zootec.

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-This study investigated the effect of dietary amino acid composition from proteins alternative to fishmeal on the growth performance of the common snook, Centropomus undecimalis. ) and achieved the lowest body weight (31.1±6.62 and 33.3±10.20 vs 40.4±13.18 g) and the highest feed conversion ratio (3.69±0.29 and 3.11±0.51 vs 2.33±0.34) when fed SPC and basal diets compared with PBM, respectively. Retention of dietary crude protein varied from 36 to 38% for fish fed the basal and SPC diets, but exceeded 51% in fish fed PBM. Results indicate a greater ability of the common snook to gain weight and increase retention of nutrients when dietary protein is of terrestrial animal origin. Dietary protein from PBM yields a more balanced dietary amino acid composition relative to fish muscle, but possibly in excess of the species requirements.

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Influência da densidade de estocagem no cultivo de juvenis de robalo-flecha mantidos em laboratório

Cited by 16 publications

References 9 publications

Local knowledge and training towards management

Local knowledge and training towards management

Desempenho Zootécnico E Rendimento De Filé Do Robalo-Flecha Alimentado Com Diferentes Dietas Comerciais

Effect of dietary amino acid composition from proteins alternative to fishmeal on the growth of juveniles of the common snook, Centropomus undecimalis

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