Análise energética em sistema de produção de suínos com aproveitamento dos desejos como biofertilizante em pastagem

Souza, Cássio Vinicius de; Campos, Alessandro Torres; Bueno, Osmar de Carvalho; Silva, Enilson B.

doi:10.1590/s0100-69162009000400005

Cited by 14 publications

(28 citation statements)

References 18 publications

(21 reference statements)

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“…These results are corroborated by ANGONESE et al (2006), & SANTOS & LUCAS JUNIOR (2004) and SOUZA et al (2009) that also showed higher consumption in the category of direct energy. In Table 6, it is shown the preponderance of direct energy through ration (80.57%) used as animals´ food.…”

Section: Resultssupporting

confidence: 74%

“…Thus, the importance of energy balance in agricultural systems has been demonstrated by several researchers (ANGONESE et al 2,006;BIAGGIONI & BOVOLENTA, 2010;CAMPOS et al 2,009;CAMPOS et al 2005;CAMPOS et al 2,004 ;CAMPOS et al, 2003;FRIGO et al, 2011;JASPER et al, 2010;MELO et al, 2007;SANTOS & LUCAS JÚNIOR, 2004;SOUZA et al, 2009), and is based on the physical principle of energy conservation, also known as the first principle of thermodynamics, i.e., the energy variation in a process can be explained by the energy balance, i.e. energy inputs and outputs (ANGONESE et al, 2006).…”

Section: Introductionmentioning

confidence: 94%

“…Regarding the calculation of the energy consumed by machinery and equipment, the methodology used was the one by ANGONESE et al (2006), CAMPOS et al (2009), CAMPOS et al (2004, CAMPOS et al (2003) and JASPER et al (2010), which consists in applying a depreciation method based on energy, like the economic depreciation, that, based on the machinery and equipment mass depreciates them during their lifespan. In Table 2, the ratio of machines and implements used in the studied system is shown.…”

Section: • Piglets and Pigs For Slaughter (Quantity Kg Of Natural Mamentioning

confidence: 99%

“…However, it is important to consider that the entire production process generates waste and all waste stores energy and, in this context, production systems, including the pig holdings, can store such waste into energy, lowering production costs and operating with an energy-balanced way (SANTOS & LUCAS JÚNIOR, 2004;SOUZA et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…The analysis of agro ecosystems from the perspective of their energy flows can be an instrument for assessing the energy balance in swine production systems (ANGONESE et al, 2006;SOUZA et al, 2009) and are related-indicators of energy, besides they constitute promising technical approach to evaluate and investigate problems related to energy efficiency and sustainability of agricultural systems (ANGONESE et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Energetic efficiency of a deep bed swine production system

et al. 2012

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ABSTRACT:The aim of this work was to evaluate the energy flows of a commercial production system of swine deep bed in its finishing phase, located in Juiz de Fora, in the State of Minas Gerais, Brazil. Thus, an energy efficiency study was carried out by monitoring a lot of animals, during a 94-day period. The energy rate of each compound involved in the production process was quantified and the matrixes of energy consumption were determined in the form of animal feeding, electrical energy, piglets, material used as deep bed, human labor, equipment, swine buildings, production of alive swine for slaughter, organic fertilizer production (swine deep bed or swine deep litter). From the direct input energy, 80.57% correspond to animal feeding, 11.90% to pigs for slaughter and 6.76% to piglets, while from the energy output 53.45% correspond to the terminating swine and 46.55% to organic fertilizer (swine deep bed). By the results obtained, we can conclude that such production system has corresponded to an industrial and highly specialized agro ecosystem, importing a great part of the energy consumed in the production process, with 41% of energy efficiency. KEYWORDS:Energy input and output, swine buildings, alternative management, sustainability of biosystems. EFICIÊNCIA ENERGÉTICA DE UM SISTEMA DE PRODUÇÃO DE SUÍNOS EMCAMA SOBREPOSTA RESUMO: O objetivo deste trabalho foi avaliar os fluxos de energia de um sistema comercial de produção de suínos em cama sobreposta da fase de terminação, localizado em Juiz de Fora -MG. Para tanto, realizou-se estudo de eficiência energética, por meio do acompanhamento de um lote de animais, durante o período de 94 dias. Quantificou-se o coeficiente energético de cada componente envolvido no processo de produção e determinaram-se as matrizes de consumo energético nas formas de ração, energia elétrica, leitões, material usado como cama, mão de obra, equipamentos, instalações, produção de suínos vivos, e produção de adubo orgânico (cama sobreposta de suíno). Da energia direta de entrada, 80,57% correspondem à ração, 11,90% à serragem e 6,76% aos leitões. Da energia de saída, 53,45% referem-se aos suínos para abate e 46,55% ao adubo orgânico (cama sobreposta de suíno). Pelos resultados obtidos, pode-se concluir que o sistema de produção em questão se enquadrou nas características de um agroecossistema industrial, altamente especializado, importando grande parte da energia consumida no processo de produção e apresentando eficiência energética de 41%. PALAVRAS-CHAVE:Balanço de energia, instalações para suínos, manejo alternativo, sustentabilidade de biossistemas.

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Section: Resultssupporting

confidence: 74%

Section: Introductionmentioning

confidence: 94%

Section: • Piglets and Pigs For Slaughter (Quantity Kg Of Natural Mamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Energetic efficiency of a deep bed swine production system

et al. 2012

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Energy Sustainability in Viticulture in a Hot Climate Region in Brazil

de Souza,

Ventura,

de Souza

et al. 2024

Applied Fruit Science

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Energy and land use in worldwide agriculture: an application of life cycle energy and cluster analysis

Ghisellini

Setti

Ulgiati

2015

Environ Dev Sustain

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Agriculture is expected to provide food in a sustainable manner while also partially contributing to the energy problem as well as to bio-material supply. Moreover, fossil fuels scarcity calls for an increase of energy efficiency in agricultural processes. This study evaluates patterns, trends, driving factors and trade-offs of energy use in selected agricultural systems and aims at grouping them into clusters with similar energy and social performances. Results show that in 2010 the highest power densities and energy intensities of production are found by crop sector of cluster 5 (China: 59.19 GJ/ha, 15.29 MJ/kg dm) and cluster 3 (Japan: 50.11 GJ/ha, 12.32 MJ/kg dm) as well as by livestock sector of cluster 3 (Japan: 328.47 GJ/ha, 103.08 MJ/kg dm), while the lowest values in clusters 2 and 4, including selected developing countries and USA. Cluster 3 (Japan) also shows the lowest energy intensity of economic value of crops (2.75 MJ/$), while cluster 5 (China) the highest one (23.96 MJ/$). Cluster analysis also sheds light on trends, identifying two groups: cluster 1*, gathering most European countries, USA and Japan, characterized by a decreasing trend of all energy indicators; and cluster 2*, including developing countries, the Netherlands and Spain, characterized by an increasing trend of indicators. Results highlight the importance of an integrated framework for evaluating energy use as well as of a multi-criteria approach to understand the trade-offs and interplay of performance indicators

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Análise energética em sistema de produção de suínos com aproveitamento dos desejos como biofertilizante em pastagem

Cited by 14 publications

References 18 publications

Energetic efficiency of a deep bed swine production system

Energetic efficiency of a deep bed swine production system

Energy Sustainability in Viticulture in a Hot Climate Region in Brazil

Energy and land use in worldwide agriculture: an application of life cycle energy and cluster analysis

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