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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
08/07/2013 |
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Data da última atualização: |
06/03/2015 |
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Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
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Autoria: |
AVILA, V. S. de; COLDEBELLA, A.; FIGUEIREDO, E. A. P. de; BELLAVER, C.; BRUM, P. A. R. de. |
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Afiliação: |
VALDIR SILVEIRA DE AVILA, CNPSA; ARLEI COLDEBELLA, CNPSA; ELSIO ANTONIO PEREIRA DE FIGUEIREDO, CNPSA; CLAUDIO BELLAVER, CNPSA; PAULO ANTONIO RABENSCHLAG DE BRUM, CNPSA. |
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Título: |
Alternativas de sistemas de alimentação na criação do frango de corte colonial Embrapa 041. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Concórdia: EMBRAPA-CNPSA, 2003 |
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Páginas: |
3 |
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Série: |
(EMBRAPA-CNPSA.Comunicado técnico, 336) |
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Idioma: |
Português |
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Palavras-Chave: |
Embrapa 041; Frango colonial. |
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Thesagro: |
Alimentação; Criação. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/85643/1/DCOT-336.pdf
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Marc: |
LEADER 00662nam a2200217 a 4500
001 1961621
005 2015-03-06
008 2003 bl uuuu u0uu1 u #d
100 1 $aAVILA, V. S. de
245 $aAlternativas de sistemas de alimentação na criação do frango de corte colonial Embrapa 041.$h[electronic resource]
260 $aConcórdia: EMBRAPA-CNPSA$c2003
300 $a3
490 $a(EMBRAPA-CNPSA.Comunicado técnico, 336)
650 $aAlimentação
650 $aCriação
653 $aEmbrapa 041
653 $aFrango colonial
700 1 $aCOLDEBELLA, A.
700 1 $aFIGUEIREDO, E. A. P. de
700 1 $aBELLAVER, C.
700 1 $aBRUM, P. A. R. de
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Registro original: |
Embrapa Suínos e Aves (CNPSA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Pecuária Sudeste. |
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Data corrente: |
04/05/2016 |
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Data da última atualização: |
21/03/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
CARDOSO, A. S.; BERNDT, A.; LEYTEM, A.; ALVES, B. J. R.; CARVALHO, I. das N. O. de; SOARES, L. H. de B.; URQUIAGA, S.; BODDEY, R. M. |
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Afiliação: |
ABMAEL S. CARDOSO, UNESP, JABOTICABAL, SP; ALEXANDRE BERNDT, CPPSE; APRIL LEYTEM, USDA, KIMBERLY, USA; BRUNO JOSE RODRIGUES ALVES, CNPAB; ISABEL DAS N. O. DE CARVALHO, BOLSISTA EMBRAPA AGROBIOLOGIA; LUIS HENRIQUE DE BARROS SOARES, CNPAB; SEGUNDO SACRAMENTO U CABALLERO, CNPAB; ROBERT MICHAEL BODDEY, CNPAB. |
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Título: |
Impact of the intensification of beef production in Brazil on grenhouse gas emissions and land use. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Agricultural Systems, Essex, v. 143, p. 86-96, 2016. |
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DOI: |
10.1016/j.agsy.2015.12.007 |
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Idioma: |
Inglês |
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Conteúdo: |
Brazil has the largest herd of beef cattle in the world, estimated at approximately 200 million animals. Production is predominantly pasture-based and low input and hence time to slaughter is long, which promotes high methane (CH4) emissions per kg of product. The objective of this study was to investigate the impact of increasing animal productivity using fertilizers, forage legumes, supplements and concentrates, on the emissions of greenhouse gases (GHGs) in five scenarios for beef production in Brazil. A life cycle analysis (LCA) approach, from birth of calves to mature animals ready for slaughter at the farm gate, was utilized using Tier 2 methodologies of the IPCC and the results expressed in equivalents of carbon dioxide (CO2eq) per kg of carcass produced. Fossil CO2 emitted in the production of supplements, feeds and fertilizers was included using standard LCA techniques. The first four scenarios were based solely on cattle production on pasture, ranging from degraded Brachiaria pastures, through to a mixed legume/Brachiaria pasture and improved N-fertilized pastures of Guinea grass (Panicum maximum). Scenario 5 was the most intensive and was also based on an N-fertilized Guinea grass pasture, but with a 75-day finishing period in confinement with total mixed ration (TMR). Across the scenarios from 1 to 5 the increase in digestibility promoted a reduction in the forage intake per unit of animal weight gain and a concomitant reduction in CH4 emissions. For the estimation of nitrous oxide (N2O) emissions from animal excreta, emission factors from a study in the Cerrado region were utilized which postulated lower emission from dung than from urine and much lower emissions in the long dry season in this region. The greatest impact of intensification of the beef production systems was a 7-fold reduction of the area necessary for production from 320 to 45 m2/kg carcass. Carcass production increased from 43 to 65 Mg per herd across the scenarios from 1 to 5, and total emissions per kg carcass were estimated to be reduced from 58.3 to 29.4 kg CO2eq/kg carcass. Even though animal weight gain was lower in the mixed grass-legume scenario (3) than for the N-fertilized Guinea grass pastures (scenarios 4 and 5) GHG emissions per kg carcass were similar as the legume N2 fixation input had no fossil-fuel cost. A large source of uncertainty for the construction of such LCAs was the lack of data for enteric CH4 emissions from cattle grazing tropical forages. MenosBrazil has the largest herd of beef cattle in the world, estimated at approximately 200 million animals. Production is predominantly pasture-based and low input and hence time to slaughter is long, which promotes high methane (CH4) emissions per kg of product. The objective of this study was to investigate the impact of increasing animal productivity using fertilizers, forage legumes, supplements and concentrates, on the emissions of greenhouse gases (GHGs) in five scenarios for beef production in Brazil. A life cycle analysis (LCA) approach, from birth of calves to mature animals ready for slaughter at the farm gate, was utilized using Tier 2 methodologies of the IPCC and the results expressed in equivalents of carbon dioxide (CO2eq) per kg of carcass produced. Fossil CO2 emitted in the production of supplements, feeds and fertilizers was included using standard LCA techniques. The first four scenarios were based solely on cattle production on pasture, ranging from degraded Brachiaria pastures, through to a mixed legume/Brachiaria pasture and improved N-fertilized pastures of Guinea grass (Panicum maximum). Scenario 5 was the most intensive and was also based on an N-fertilized Guinea grass pasture, but with a 75-day finishing period in confinement with total mixed ration (TMR). Across the scenarios from 1 to 5 the increase in digestibility promoted a reduction in the forage intake per unit of animal weight gain and a concomitant reduction in CH4 emissions. For the estimati... Mostrar Tudo |
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Palavras-Chave: |
Beef production; Brachiaria spp; Forage legume; Life cycle analysis; Life-cycle analysis. |
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Categoria do assunto: |
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L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/156565/1/1-s2.0-S0308521X15300652-main.pdf
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Marc: |
LEADER 03303naa a2200277 a 4500
001 2065398
005 2019-03-21
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1016/j.agsy.2015.12.007$2DOI
100 1 $aCARDOSO, A. S.
245 $aImpact of the intensification of beef production in Brazil on grenhouse gas emissions and land use.
260 $c2016
520 $aBrazil has the largest herd of beef cattle in the world, estimated at approximately 200 million animals. Production is predominantly pasture-based and low input and hence time to slaughter is long, which promotes high methane (CH4) emissions per kg of product. The objective of this study was to investigate the impact of increasing animal productivity using fertilizers, forage legumes, supplements and concentrates, on the emissions of greenhouse gases (GHGs) in five scenarios for beef production in Brazil. A life cycle analysis (LCA) approach, from birth of calves to mature animals ready for slaughter at the farm gate, was utilized using Tier 2 methodologies of the IPCC and the results expressed in equivalents of carbon dioxide (CO2eq) per kg of carcass produced. Fossil CO2 emitted in the production of supplements, feeds and fertilizers was included using standard LCA techniques. The first four scenarios were based solely on cattle production on pasture, ranging from degraded Brachiaria pastures, through to a mixed legume/Brachiaria pasture and improved N-fertilized pastures of Guinea grass (Panicum maximum). Scenario 5 was the most intensive and was also based on an N-fertilized Guinea grass pasture, but with a 75-day finishing period in confinement with total mixed ration (TMR). Across the scenarios from 1 to 5 the increase in digestibility promoted a reduction in the forage intake per unit of animal weight gain and a concomitant reduction in CH4 emissions. For the estimation of nitrous oxide (N2O) emissions from animal excreta, emission factors from a study in the Cerrado region were utilized which postulated lower emission from dung than from urine and much lower emissions in the long dry season in this region. The greatest impact of intensification of the beef production systems was a 7-fold reduction of the area necessary for production from 320 to 45 m2/kg carcass. Carcass production increased from 43 to 65 Mg per herd across the scenarios from 1 to 5, and total emissions per kg carcass were estimated to be reduced from 58.3 to 29.4 kg CO2eq/kg carcass. Even though animal weight gain was lower in the mixed grass-legume scenario (3) than for the N-fertilized Guinea grass pastures (scenarios 4 and 5) GHG emissions per kg carcass were similar as the legume N2 fixation input had no fossil-fuel cost. A large source of uncertainty for the construction of such LCAs was the lack of data for enteric CH4 emissions from cattle grazing tropical forages.
653 $aBeef production
653 $aBrachiaria spp
653 $aForage legume
653 $aLife cycle analysis
653 $aLife-cycle analysis
700 1 $aBERNDT, A.
700 1 $aLEYTEM, A.
700 1 $aALVES, B. J. R.
700 1 $aCARVALHO, I. das N. O. de
700 1 $aSOARES, L. H. de B.
700 1 $aURQUIAGA, S.
700 1 $aBODDEY, R. M.
773 $tAgricultural Systems, Essex$gv. 143, p. 86-96, 2016.
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Embrapa Pecuária Sudeste (CPPSE) |
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