A system to optimize fish production: a case study of semi intensive Colossoma macropomum (Osteichthyes, Serrasalmidae) aquaculture

Abstract

Aquaculture is a fast growth activity in the world, but needs continued improvement in the conduct of management. In this sense, we highlight the Amazon basin, which has important species of fish as Colossoma macropomum with incipient production to meet the demand of the consumer market. Since that problem identified, we applied a Markovian decision process aiming to develop an optimization system to maximize the yield of the C. macropomum aquaculture. Were used mathematical algorithms were simulated with layout scenarios with 5 and 10 ponds, representing different size aquaculture farms. The transition between the growth phases was considered a stochastic process to satisfy the Markov property as per a sequential queuing through growth phases. The main goal was to define the target weight mix for the market and their optimal levels that optimize the production. The highest profitabilities were US$9,608 and 15,385 for 5 and 10 ponds layout scenarios, respectively, with a target weight mix harvest of 0.5 kg and 1 kg; 0.5 kg, 1 kg and 2 kg, respectively. The results showed the number of months for discounted the fixed monthly cost, about the cycle time that lasted of 5, 7 and 11 months, as well as the optimization was defined with the time at the fingerlings stage fixed for 50 days, possible to be improved.

Custo de implantação, planejamento zootécnico e econômico de pisciculturas de pequeno porte

“…P2, 79,7% P3 e 82,6% na P4, sendo essas comumente encontradas em outros trabalhos (BRABO et al, 2017;LEONARDO et al, 2018;LIMA et al, 2018;SHARMA et al, 2018;CRAVEIRO et al, 2019). Indicando que os resultados encontrados estão dentro do padrão adotado em outras propriedades e sistemas de produção.…”

Análise econômica da produção de peixes nativos em piscicultura arrendada na microrregião do Alto Pantanal, estado do Mato Grosso.

“…Além do pagamento do arrendamento, foi possível verificar que, na tabela 3, entre os itens que compõem o COE, a ração é a que representa maior despesa (66,8%), confirmando a importância que a CAA e o preço da ração têm sobre o custo de produção, dados comumente apresentados em outras pesquisas (BELCHIOR; DALCHIA-VON, 2017;CRAVEIRO et al, 2019;SHARMA et al, 2018).…”

The farming and husbandry ofColossoma macropomum: From Amazonian waters to sustainable production

“…Current tambaqui farming practices aim at higher productivity with minimal environmental impact, relying on mathematical models to support decision‐making in farm management 74,82,83 . Intensive pond production of tambaqui is the most profitable system, but because it depends on intrinsic regional conditions—including weather, prices of agricultural inputs and market conditions, including the currency exchange rate—it may experience peaks and troughs in yield and profitability 79,80,84 .…”

“…Current tambaqui farming practices aim at higher productivity with minimal environmental impact, relying on mathematical models to support decision-making in farm management. 74,82,83 Intensive pond production of tambaqui is the most profitable system, but because it depends on intrinsic regional conditions-including weather, prices of agricultural inputs and market conditions, including the currency exchange rate-it may experience peaks and troughs in yield and profitability. 79,80,84 Pedroza Filho et al 85 Characterizing the production system of tambaqui requires considering aspects inherent to regional climatic differences and the high degree of adaptability of tambaqui, which, with the exception of southern-most regions of South America, can be produced at commercial scale with technical-economic feasibility.…”