Economic analysis of family trout farming in Southern Brazil

Barbosa, Andressa Steffen; Pereira, R.G.; Rodrigues, Laurindo André; Casaca, Jorge de Matos; Valenti, Wagner C.; Fabregat, Thiago El Hadi Perez

doi:10.1007/s10499-020-00580-7

Cited by 11 publications

(6 citation statements)

References 7 publications

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“…The low retention observed in the present study was due to the purchases of major inputs (including feed and ngerlings) from other municipalities and states, minimizing local purchases for basic maintenance items from local retail, as well as occasional lodging for members, fuel, ice and other items of low impact on the local economy. This is especially relevant since feed and ngerlings usually show the highest proportions of total operating costs in sh farming activities (Barbosa et al 2020). However, local retention of income becomes 90% on the state level, showing that minimal nancial resources are destined to other states.…”

Section: Discussionmentioning

confidence: 99%

Sustainability of Farming Nile Tilapia in Net-Cages in a Reservoir of the Brazilian Semi-Arid Region During an Extended Drought Event

Henry-Silva

Cacho

Moura

et al. 2022

Preprint

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Stakeholders in the aquaculture industry are currently seeking the development of sustainable production systems and methodologies to measure sustainability. The present study evaluated the environmental, social and economic dimensions of sustainability of a net-cage tilapia production system with two stocking densities implemented in a reservoir in the semi-arid northeast region of Brazil during an extended drought event. The three dimensions of sustainability were evaluated through a set of 33 indicators. The Internal Rates of Return were below the Minimum Attractive Rates of Return and the Net Present Value indicator was negative for both stocking densities, showing no attractive financial benefits and no capital return capable of generating sufficient annual profits and revenues to keep the system in operation over time. The activity improved the local food supply and quality of animal protein in the state where the enterprise is carried out. Compensation of labor represented 22 and 24% of the production costs with 125 and 100 fish/m3, respectively. Various age groups and ethnic groups were represented among the employees, but the enterprise was operated only by men. Phosphorus accumulations were 2.1 and 2.0 kg/tonne and particulate material accumulations of 110 and 100 kg/tonne for 125 fish/m3 and 100 fish/m3, respectively. The prolonged drought conditions that occur in the Brazilian semiarid region can compromise the environmental, economic and social sustainability of fish farming in reservoirs in the region.

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Section: Discussionmentioning

confidence: 99%

Sustainability of Farming Nile Tilapia in Net-Cages in a Reservoir of the Brazilian Semi-Arid Region During an Extended Drought Event

Henry-Silva

Cacho

Moura

et al. 2022

Preprint

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“…A intensificação dos sistemas de produção aquícola é inevitável, visando suprir a crescente demanda por proteína animal mundial. Atrelado a isso, a constante busca por novas tecnologias que tornem os cultivos autossustentáveis, vêm sendo a resposta para uma maior produtividade (Barbosa et al, 2020). Sendo assim, uma das alternativas é a utilização do sistema de bioflocos (BFT) e o uso de recirculação de água (RAS) em cultivo com água clara.…”

Section: Palavras-chaveunclassified

“…Ingrediente este, cada vez mais oneroso e menos disponível mundialmente. Neste sentido, a busca por ingredientes alternativos é imprescindível (Barbosa et al, 2020). A spirulina (Arthrospira platensis) é uma excelente opção, pois apresenta um teor proteico elevado além de outros nutrientes essenciais aos peixes (Zhang et al, 2019).…”

Section: Referênciasunclassified

“…Isso será possível já que a spirulina é uma excelente fonte de proteína vegetal, com potencial para incrementar o crescimento e melhorar a resposta imune dos peixes (Zhang et al, 2019). Com isso, também será possível reduzir o uso da farinha de peixe das dietas aquícolas, ingrediente cada vez mais oneroso e menos disponível mundialmente (Barbosa et al, 2020). Ainda neste sentido, acredita-se que o sistema de cultivo BFT otimize o crescimento e a saúde dos alevinos, em relação ao AC, devido aos agregados microbianos presentes nesse meio de cultivo.…”

Section: Referênciasunclassified

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11º Seminário de Ensino, Pesquisa e Extensão da Udesc Oeste – 11º SEPE e 4º Encontro da Pós-graduação da Udesc Oeste - 4º EPG

2022

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O 11º Seminário de Ensino, Pesquisa e Extensão da Udesc Oeste/CEO (11º SEPE) e 4º Encontro da Pós-Graduação da Udesc Oeste/CEO (4º EPG), realizou-se nos dias 23 e 24 de novembro de 2021, de forma online. O evento proporcionou aos acadêmicos de Graduação e Pós-graduação da Udesc Oeste/CEO, a oportunidade de expor seus trabalhos, oriundos de projetos de pesquisa da Graduação e Pós-Graduação, projetos de Ensino e projetos de Extensão, através da escrita (resumo expandido) e apresentação de vídeo publicado no Youtube, por meio do canal da Udesc Oeste.

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“…Feed costs can reach up to 60% of operational expenses in intensive fish production systems (Barbosa et al, 2020). Fish meal is important in aquaculture diets as a protein source with high biological value.…”

Section: Introductionmentioning

confidence: 99%

Mixed culture microorganisms fermented soybean meal improves productive performance and intestinal health of Nile tilapia ( Oreochromis niloticus ) juveniles fed plant‐based diets in a biofloc system

Picoli

Marques

Oliveira

et al. 2022

Aquaculture Research

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This study aimed to evaluate the effect of plant‐based diets containing different inclusion levels (7%, 14%, 21% and 28%) of mixed culture microorganisms fermented soybean meal (FSBM) on the zootechnical performance and intestinal health of juvenile Nile tilapia (Oreochromis niloticus) reared in a biofloc system. The FSBM diets were compared with a positive control diet with fish meal and a negative control diet with no animal protein. All diets were isoprotein (33% CP) and isoenergetic (4300 kcal GE/kg). The design was completely randomized with four replications and the experiment lasted 54 days. Juveniles (1.635 ± 0.198 g) were distributed in 24 tanks (70 L) at a density of seven animals per tank. Fermentation increased probiotic microorganisms count (lactic acid bacteria 4.75 ± 0.21 log CFU g−1 and yeast 3.30 ± 0.54 log CFU g−1) and improved nutritional characteristics of FSBM. In fish fed the diet containing 7% FSBM, growth performance did not differ from fish fed the fish meal diet. FSBM inclusion improved the food efficiency of plant‐based diets. The inclusions above 21% of FSBM increased the intestinal villi height. In the inclusion of 28% of FSBM, the goblet cell was higher compared to that of the other plant‐based diets. The inclusion of 7% FSBM allows a total replacement of fish meal without compromising the growth performance of the animals.

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Economic analysis of family trout farming in Southern Brazil

Cited by 11 publications

References 7 publications

Sustainability of Farming Nile Tilapia in Net-Cages in a Reservoir of the Brazilian Semi-Arid Region During an Extended Drought Event

Sustainability of Farming Nile Tilapia in Net-Cages in a Reservoir of the Brazilian Semi-Arid Region During an Extended Drought Event

11º Seminário de Ensino, Pesquisa e Extensão da Udesc Oeste – 11º SEPE e 4º Encontro da Pós-graduação da Udesc Oeste - 4º EPG

Mixed culture microorganisms fermented soybean meal improves productive performance and intestinal health of Nile tilapia ( Oreochromis niloticus ) juveniles fed plant‐based diets in a biofloc system

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