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Registros recuperados: 25 | |
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Canning, Patrick N.; Charles, Ainsley; Huang, Sonja; Polenske, Karen R.; Waters, Arnold. |
Energy is an important input in growing, processing, packaging, distributing, storing, preparing, serving, and disposing of food. Analysis using the two most recent U.S. benchmark input-output accounts and a national energy data system shows that in the United States, use of energy along the food chain for food purchases by or for U.S. households increased between 1997 and 2002 at more than six times the rate of increase in total domestic energy use. This increase in food-related energy flows is over 80 percent of energy flow increases nationwide over the period. The use of more energy-intensive technologies throughout the U.S. food system accounted for half of this increase, with the remainder attributed to population growth and higher real... |
Tipo: Report |
Palavras-chave: Energy use; Energy technologies; Food expenditures; Input-output analysis; Population change; Structural decomposition analysis; Supply chain analysis; Resource /Energy Economics and Policy. |
Ano: 2010 |
URL: http://purl.umn.edu/59381 |
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Mattioli,Matheus C.; Campos,Alessandro T.; Yanagi Junior,Tadayuki; Marin,Diego B.; Eugênio,Tony M. C.; Costa Junior,José E. V.. |
ABSTRACT The objective of this study was to evaluate the sustainability of a broiler chicken production system, with confinement in Darkhouse sheds, by energetic analysis. Energy flows of a complete production cycle, 56 days, were considered, of which the energy inputs and outputs were computed in direct and indirect forms, by estimating the energy coming from the quantity of feed, water, machinery and equipment, human labor, sheds, silos, among other components of the productive system, multiplied by their respective energetic coefficients. The total energy demand of a system in a production cycle for the production of 1 kg of live chicken and its energy efficiency coefficient were determined. The studied system had energy conversion coefficient of 95%,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sustainability; Input-output analysis; Livestock buildings and environment; Aviculture; Broiler chicken facilities. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000900648 |
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Registros recuperados: 25 | |
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