Sustainability assessment of commercial Brazilian organic and conventional broiler production systems under an Emergy analysis perspective

Nacimento, Rafael Araújo; Moreno, Danny Alexander Rojas; Luiz, Vitória Toffolo; Almeida, Taynara Freitas Avelar de; Rezende, Vanessa Theodoro; Andreta, Joice Maria Bazerla; Mendes, Cecília Mitie Ifuki; Giannetti, Biagio F.; Gameiro, Augusto Hauber

doi:10.1016/j.jclepro.2022.132050

Cited by 9 publications

(6 citation statements)

References 34 publications

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“…Consequently, this method is used in a rather narrow circle of academics, mainly in the US, Brazil, China or Italy (Ulgiati et al, 1994;Chen et al, 2006;Xu et al, 2023;Brown et al, 2022;Nacimento et al, 2022). In Poland, few academics have addressed the problem of applying emergy estimation, mainly in the area of agriculture (Kuczuk, 2017;Kuczuk et al, 2023;Jankowiak & Miedziejko, 2009;Lewandowska-Czarnecka, 2019).…”

Section: Ren = R/emmentioning

confidence: 99%

Broiler production from the perspective of emergy analysis - environmental impact scenarios

KUCZUK,

POSPOLITA

2024

EiS

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Poultry meat consumption is a significant element in Poland's overall food consumption. Economic considerations mean that both nationally and globally, conventional intensive rearing dominates. Nevertheless, environmental and health aspects or the will to treat animals humanely make pro-environmental rearing systems increasingly common. The purpose of this article is an environmental analysis of an example farm engaged in intensive rearing of slaughtered poultry (so-called baseline production). For the analysed production, the following scenarios of changes were proposed: (a) conventional rearing based on the use of own fodder, and (b) organic rearing using free range and own organic fodder. An emergy approach was applied in this analysis. Comparison of different production systems using emergy analysis made it possible to show the scale of environmental resource commitment for baseline and scenario-based productions, and to determine the amount of renewable and non-renewable emergy consumed per unit of production. Through the use of selected emergy indicators, e.g.: Environmental Loading Ratio (ELR), Emergy Yield Ratio (EYR), the environmental impact for each case was determined. For the ecological system scenario, the need to change production parameters (stocking rate, maximum poultry house area, free range) was taken into account. The results of the emergy-based indicators showed that the baseline production places the greatest burden on the environment and is the least sustainable. The organic system is the opposite; however, due to production limitations and the lower production efficiency achieved, it may not be economically viable to orient a farm exclusively to the organic system. In an environmental assessment, the information obtained can provide valuable guidance to agricultural producers. They can help make informed decisions on natural resource management to achieve environmental security. The results are also important for political decision-makers in creating policies for more sustainable agricultural production. The results obtained are discussed, pointing out the importance of the analysis used mainly from an environmental point of view.

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Section: Ren = R/emmentioning

confidence: 99%

Broiler production from the perspective of emergy analysis - environmental impact scenarios

KUCZUK,

POSPOLITA

2024

EiS

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“…To calculate the EER indicator, initially, the emergy accounting model was used to evaluate the emergy flows according to Nacimento et al [39] (Figure 5). The model was filled using data previously recorded from the Embrapa Suínos e Aves reports [40,41].…”

Section: Estimating a Holistic View-based Payment For The Broiler Sma...mentioning

confidence: 99%

“…evaluate the emergy flows according to Nacimento et al [39] (Figure 5). The model was filled using data previously recorded from the Embrapa Suínos e Aves reports [40,41].…”

Section: Estimating a Holistic View-based Payment For The Broiler Sma...mentioning

confidence: 99%

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Hidden Costs Associated with Smallholder Family-Based Broiler Production: Accounting for the Intangibles

Nacimento,

Canever,

Almeida

et al. 2023

Sustainability

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The contractual relationship between the processing firm and the broiler smallholder presents incessant conflicts of interest and inequality due to technical and economic discrepancies, leading to an undervaluation of the producers’ remuneration. This study aims to deepen the discussion on searching for a more balanced monetary exchange between processing firms and broiler smallholders based on scientific aspects. For this, the emergy theory and its concepts are used while considering a representative broiler production system at Concórdia, Brazil. The results indicate the importance of including cultural information in the emergy-based model calculation, which achieved the highest emergy contribution (~63%; transformity = 1.73 × 108 sej/J) for the broiler smallholder. On the other hand, the cultural information was not sufficient to increase the sustainability of the broiler production system. The results show an imbalance in the monetary exchange between the processing firm and broiler smallholder from both perspectives (the economic and emergy-based ones), which indicates higher values (USD 0.32/broiler and EmUSD 1.62/broiler) than the practiced payment value of USD 0.24/broiler. Evaluating the “(eco)cost” from an emergy-based accounting perspective recognizes that production depends not only on tangible physical resources but also on knowledge, skills and information (“iceberg of value” thinking). Policy and decision makers must therefore consider the promotion of public policies that subside initiatives, including social and environmental welfare programs.

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“…Os sistemas intensivos de produção de frangos de corte, comparados a outros sistemas de produção, são geralmente identificados como ambientalmente mais eficientes (NACIMENTO et al, 2022). Ainda assim, face ao crescimento do setor, tem sido impulsionada uma maior preocupação sobre a avicultura de corte e o seu impacto no ambiente e na saúde humana (MARTINELLI et al, 2020;MOTTET;TEMPIO, 2017).…”

Section: Introductionunclassified

Análise ambiental e econômica de sistemas de produção de frangos de corte

Braga

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O estudo sobre os aspectos ambientais, energéticos e econômicos em processos agrícolas são importantes para o desenvolvimento de alternativas sustentáveis em sistemas de produção de alimentos. Neste trabalho foram avaliados os impactos ambientais a partir da avaliação de ciclo de vida (ACV), o uso de energia e os custos econômicos em sistemas de produção de frangos de corte na região sudeste do estado de Minas Gerais, Brasil. Foram analisados quatro cenários de sistemas intensivos de criação de frangos de corte, divididos em galpões com sistema de ventilação por pressão positiva e negativa, com e sem sistemas fotovoltaicos de geração distribuída de energia elétrica. Na ACV foi considerada a unidade funcional de 1 kg de frango vivo e a fronteira de estudo do tipo cradle-to-gate studies. Os resultados para a categoria de impacto ambiental de emissões de gases de efeito estufa variaram de 2,52 kg CO2-eq a 2,92 kg CO2-eq nos cenários analisados. O potencial de acidificação e de eutrofização também foram considerados na avaliação dos impactos ambientais. Os sistemas de produção de frangos de corte com sistemas fotovoltaicos podem reduzir entre 2,58 t CO2-eq e 4,96 t CO2-eq anualmente, além de apresentarem no estudo os melhores índices de eficiência energética. Em relação a análise econômica, todos os cenários avaliados mostraram-se viáveis economicamente no ponto de vista do produtor rural, entretanto os galpões com sistemas de ventilação por pressão positiva apresentaram os menores resultados no índice de relação custo-benefício. O subsistema de produção de ração foi a fase de ciclo de vida que mais contribuiu para o potencial de aquecimento global e em relação ao aspecto energético, representando cerca de 82% da demanda de entrada total de energia da produção de frangos de corte. Em todos os cenários avaliados os maiores custos de produção estão associados à casca de café (36,5%), matéria prima da cama de frango, e às manutenções das instalações (23,1%). Os resultados também mostraram que a adoção de sistemas fotovoltaicos nos sistemas de produção de frangos de corte pode reduzir os custos com energia elétrica de 19,4% a 26,5% ao ano. Em relação à confiabilidade dos dados do inventário de ciclo de vida, foram avaliadas as incertezas a partir da análise de Monte Carlo junto ao SimaPro®. Verificou-se que a adoção de sistemas fotovoltaicos na produção de frangos de corte em galpões com sistema de ventilação por pressão negativa reduzem os impactos ambientais, são mais eficientes energeticamente e colaboram para uma maior rentabilidade e manutenção da avicultura de corte na região estudada. Palavras-chave: Avaliação do ciclo de vida. Custos econômicos. Emissões de gases de efeito estufa. Energia. Geração distribuída.

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Sustainability assessment of commercial Brazilian organic and conventional broiler production systems under an Emergy analysis perspective

Cited by 9 publications

References 34 publications

Broiler production from the perspective of emergy analysis - environmental impact scenarios

Broiler production from the perspective of emergy analysis - environmental impact scenarios

Hidden Costs Associated with Smallholder Family-Based Broiler Production: Accounting for the Intangibles

Análise ambiental e econômica de sistemas de produção de frangos de corte

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