Cage culture of tambaqui (Colossoma macropomum) in a central Amazon floodplain lake

Gomes, Levy Carvalho; Chagas, Edsandra Campos; Martins-Junior, Heitor; Roubach, Rodrigo; Ono, Eduardo Akifumi; Lourenco, J. N. de P.

doi:10.1016/j.aquaculture.2005.08.020

Cited by 89 publications

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“…O custo com alimentação para os peixes produzidos com taxa de alimentação de 1% do peso vivo/dia foi de U$ 0,79, sendo estes peixes vendidos no mercado de Manaus por U$ 1,89 kg -1 . O custo com ração representou 59% do custo total de produção do tambaqui criado em tanque-rede, no mesmo lago, na densidade de 20 peixes m -3 (GOMES et al, 2006). Desta forma, utilizou-se esse trabalho como referência para calcular o custo total de produção e obteve-se que apenas os peixes criados com 1% do peso vivo dia -1 apresentam custo de total de produção (U$ 1,34) inferior ao preço de venda.…”

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Produtividade de tambaqui criado em tanque-rede com diferentes taxas de alimentação

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Section: Resultsunclassified

Produtividade de tambaqui criado em tanque-rede com diferentes taxas de alimentação

et al. 2007

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“…This result agrees with a common observation for every enterprise, variable costs gain importance as the production process is optimized. Conversely, the fixed costs participation tends to decrease in the cost composition because their use is optimized (Gomes et al, 2006;Bjornsson et al, 2012).…”

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“…Thus, the increase of stocking density is desirable since it translates into increased yield per unit area/volume and reduced costs thus yielding better economic indicators. Gomes et al (2006) also stated that profitability and revenue indicators increase with stocking density; however, when density starts to affect production negatively, these indicators also tend to be affected by increasing at a slower pace, stabilizing and even decreasing. Despite the fact that low stocking densities provide better growth rates, in most fish species (Souza-Filho & Cerqueira, 2003;Santos et al, 2007), productivity tends to be low, thus making the activity less profitable (Gomes et al, 2006).…”

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Effect of stocking density on economic performance for Colossoma macropomum (Cuvier, 1816), juvenile in earthen ponds

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ABSTRACT. The seeding rate is a factor that affects water quality, biological, physiological parameters, incidence of parasites and economic indicators. 72,000 fish of ± 1.9 ± 0.1 cm and 0.4 ± 0.01 g were planted in 12 ponds of 600 m² in densities of 5, 10 and 15 fish m -2 . The fish were fed twice a day until apparent satiation, with a commercial feed with 36% crude protein, for 56 days. The cost was determined based on the total production cost and total operational cost, showing unit values per hectare of water surface. Performance indicators were compared with ANOVA test with polynomial regression. The final number of fish showed a positive linear behavior, while the other performance parameters were not affected by density, thus suggesting that the pond's maximum stocking density was not reached. On investment and production costs the most representative items were nursery building and fry acquisition, respectively, which denotes that increasing seeding density positively affected the production process, improving all the economic indicators. Keywords: Colossoma macropomum, tambaqui, fish-farming, performance, economic evaluation, production cost, Brazil. Efecto de la densidad de siembra sobre el rendimiento económico de juveniles deColossoma macropomum (Cuvier, 1816) en estanques RESUMEN. La densidad de siembra es un factor que afecta la calidad del agua, indicadores biológicos, parámetros fisiológicos, incidencia de parásitos e indicadores económicos. 72,000 peces de 1,9 ± 0,01 cm y 0,4 ± 0,01 g, fueron sembrados en 12 estanques de 600 m² en densidades de siembra de 5, 10 y 15 peces m -2 . Los peces fueron alimentados dos veces al día hasta su aparente saciedad, con alimento comercial con 36% proteína bruta por 56 días. El costo fue determinado con base al costo total y costo operacional de producción, mostrando los valores en unidad por hectárea de superficie de agua. Los indicadores de rendimiento fueron comparados con la prueba de ANOVA con regresión polinómica. El número final de peces mostró un comportamiento lineal positivo, mientras que los otros parámetros de rendimiento no fueron afectados por la densidad de siembra, sugiriendo que la máxima densidad de siembra de los estanques no se alcanzó. En la inversión y en los costos de producción los elementos más representativos fueron la construcción de viveros y la adquisición de alevines, respectivamente. De esta manera, se determinó que el aumento de la densidad de siembra afectó positivamente el proceso de producción, mejorando todos los indicadores económicos. Palabras clave: Colossoma macropomum, cachama negra, piscicultura, rendimiento, evaluación económica, costo de producción, Brasil.

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“…(COELHO & CYRINO, 2006), African catfish Clarias gariepinus (HENGSAWAT et al, 1997), and panga Pangasius sutchi (RAHMAN et al, 2006). The same relationship was also observed during grow-out of tambaqui in net pens but with results showing positive net margin only in the high stocking density (GOMES et al, 2006).…”

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confidence: 62%

“…Assessment of physiological indicators of stress is an important tool to understand adaptation processes in fish (GOMES et al, 2006). Glucose is a primary source of energy in fish, and an increase in glucose levels in the blood occurs as a secondary response to stress (BRAUN et al, 2010).…”

Section: Initial Weight (G) -----------------------------------------mentioning

confidence: 99%

Stocking density during the initial grow-out phase of tambatinga in net pens

et al. 2016

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Cage culture of tambaqui (Colossoma macropomum) in a central Amazon floodplain lake

Cited by 89 publications

References 20 publications

Produtividade de tambaqui criado em tanque-rede com diferentes taxas de alimentação

Produtividade de tambaqui criado em tanque-rede com diferentes taxas de alimentação

Effect of stocking density on economic performance for Colossoma macropomum (Cuvier, 1816), juvenile in earthen ponds

Stocking density during the initial grow-out phase of tambatinga in net pens

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