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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
02/10/2021 |
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Data da última atualização: |
02/10/2021 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
MACIEL, I. C. de F.; ALVARENGA, R. C.; CAMPANHA, M. M.; GONTIJO NETO, M. M. |
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Afiliação: |
ISABELLA CRISTINA DE FARIA MACIEL; RAMON COSTA ALVARENGA, CNPMS; MONICA MATOSO CAMPANHA, CNPMS; MIGUEL MARQUES GONTIJO NETO, CNPMS. |
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Título: |
Greenhouse gas emissions by cattle reared in an integrated croplivestock system and finished in feedlot. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
In: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FORESTRY SYSTEMS, 2., 2021. Proceedings reference... Brasília, DF: Embrapa, 2021. |
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Páginas: |
p. 85-91. |
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ISBN: |
978-65-994135-4-4 |
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Idioma: |
Inglês |
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Notas: |
WCCLF.
Evento online. |
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Conteúdo: |
Beef cattle is one of the main sources of GHG in the agricultural sector, however, it is possible to implement improvements in this segment to mitigate GHG emissions. Beef production in an integrated crop-livestock system can achieve a positive carbon balance, but feedlot systems generally offers both lower area requirements and GHG emissions per kilogram of meat produced than traditional systems. In this way, beef cattle production systems that associate well-managed grass systems, with the supply of diets in the finishing phase is an alternative to increase the productivity of the system, in addition to contributing to the reduction of GHG emissions per kg of meat produced. Cattle excreta are also sources of GHG emissions to the atmosphere, mainly nitrous oxide (N2O) and methane (CH4), but considerably less is known on their environmental impact. Thence, the objective of the study was to evaluate the enteric methane production from two breed compositions as well as GHG emissions from beef cattle excreta in a feedlot system. Methane production (kg/period) was 19% lower in Nellore (NEL) than Angus x Nellore crossbred (AN) in grazing, and no difference was observed in feedlot. The NEL had less CH4 intensity (CH4/BW) in grazing but greater CH4 per unit of ADG in the feedlot compared to AN. Breed composition did not influence the CH4 yield (CH4/DMI) in either phase, despite the difference in feedlot DMI (kg day-¹). Regarding to the GHG emission from excreta deposition, the occurrence of rainfall was determinant of very high N2O fluxes either for urine or feces. Individual excreta were characterized by a period of small but significant fluxes, followed by a period of indistinguishable fluxes at the background level, and then a third period after rainfall portrayed the large impact of excreta on GHG emissions from the feedlot. MenosBeef cattle is one of the main sources of GHG in the agricultural sector, however, it is possible to implement improvements in this segment to mitigate GHG emissions. Beef production in an integrated crop-livestock system can achieve a positive carbon balance, but feedlot systems generally offers both lower area requirements and GHG emissions per kilogram of meat produced than traditional systems. In this way, beef cattle production systems that associate well-managed grass systems, with the supply of diets in the finishing phase is an alternative to increase the productivity of the system, in addition to contributing to the reduction of GHG emissions per kg of meat produced. Cattle excreta are also sources of GHG emissions to the atmosphere, mainly nitrous oxide (N2O) and methane (CH4), but considerably less is known on their environmental impact. Thence, the objective of the study was to evaluate the enteric methane production from two breed compositions as well as GHG emissions from beef cattle excreta in a feedlot system. Methane production (kg/period) was 19% lower in Nellore (NEL) than Angus x Nellore crossbred (AN) in grazing, and no difference was observed in feedlot. The NEL had less CH4 intensity (CH4/BW) in grazing but greater CH4 per unit of ADG in the feedlot compared to AN. Breed composition did not influence the CH4 yield (CH4/DMI) in either phase, despite the difference in feedlot DMI (kg day-¹). Regarding to the GHG emission from excreta deposition, the occu... Mostrar Tudo |
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Palavras-Chave: |
Bovine excreta; Excreta bovina; Metano entérico. |
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Thesagro: |
Fezes; Gado de Corte; Metano. |
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Thesaurus Nal: |
Beef cattle; Methane. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/226594/1/Greenhouse-gas.pdf
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Marc: |
LEADER 02740nam a2200277 a 4500
001 2134995
005 2021-10-02
008 2021 bl uuuu u00u1 u #d
020 $a978-65-994135-4-4
100 1 $aMACIEL, I. C. de F.
245 $aGreenhouse gas emissions by cattle reared in an integrated croplivestock system and finished in feedlot.$h[electronic resource]
260 $aIn: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FORESTRY SYSTEMS, 2., 2021. Proceedings reference... Brasília, DF: Embrapa$c2021
300 $ap. 85-91.
500 $aWCCLF. Evento online.
520 $aBeef cattle is one of the main sources of GHG in the agricultural sector, however, it is possible to implement improvements in this segment to mitigate GHG emissions. Beef production in an integrated crop-livestock system can achieve a positive carbon balance, but feedlot systems generally offers both lower area requirements and GHG emissions per kilogram of meat produced than traditional systems. In this way, beef cattle production systems that associate well-managed grass systems, with the supply of diets in the finishing phase is an alternative to increase the productivity of the system, in addition to contributing to the reduction of GHG emissions per kg of meat produced. Cattle excreta are also sources of GHG emissions to the atmosphere, mainly nitrous oxide (N2O) and methane (CH4), but considerably less is known on their environmental impact. Thence, the objective of the study was to evaluate the enteric methane production from two breed compositions as well as GHG emissions from beef cattle excreta in a feedlot system. Methane production (kg/period) was 19% lower in Nellore (NEL) than Angus x Nellore crossbred (AN) in grazing, and no difference was observed in feedlot. The NEL had less CH4 intensity (CH4/BW) in grazing but greater CH4 per unit of ADG in the feedlot compared to AN. Breed composition did not influence the CH4 yield (CH4/DMI) in either phase, despite the difference in feedlot DMI (kg day-¹). Regarding to the GHG emission from excreta deposition, the occurrence of rainfall was determinant of very high N2O fluxes either for urine or feces. Individual excreta were characterized by a period of small but significant fluxes, followed by a period of indistinguishable fluxes at the background level, and then a third period after rainfall portrayed the large impact of excreta on GHG emissions from the feedlot.
650 $aBeef cattle
650 $aMethane
650 $aFezes
650 $aGado de Corte
650 $aMetano
653 $aBovine excreta
653 $aExcreta bovina
653 $aMetano entérico
700 1 $aALVARENGA, R. C.
700 1 $aCAMPANHA, M. M.
700 1 $aGONTIJO NETO, M. M.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
03/08/2001 |
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Data da última atualização: |
08/06/2018 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
MARRIEL, I. E.; VASCONCELLOS, C. A.; FRANCA, G. E. de; SANTANA, D. P.; KONZEN, E. A.; OLIVEIRA, A. C. de. |
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Afiliação: |
IVANILDO EVODIO MARRIEL, CNPMS; DERLI PRUDENTE SANTANA, CNPMS; ANTONIO CARLOS DE OLIVEIRA, CNPMS. |
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Título: |
Perfil metabólico da comunidade microbiana como indicador da qualidade biológica do solo. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE CIENCIA DO SOLO, 28., 2001, Londrina. Ciência do solo: fator de produtividade competitiva com sustentabilidade. Londrina: SBCS, 2001. p. 73. |
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Idioma: |
Português |
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Palavras-Chave: |
Diversidade; Diversity; Heath; Metabolic; Metabolica; Sustainable; Sustentabilidade. |
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Thesagro: |
Saúde; Solo. |
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Thesaurus NAL: |
soil. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/52943/1/Perfil-metabolico.pdf
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Marc: |
LEADER 00896nam a2200277 a 4500
001 1485009
005 2018-06-08
008 2001 bl uuuu u00u1 u #d
100 1 $aMARRIEL, I. E.
245 $aPerfil metabólico da comunidade microbiana como indicador da qualidade biológica do solo.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE CIENCIA DO SOLO, 28., 2001, Londrina. Ciência do solo: fator de produtividade competitiva com sustentabilidade. Londrina: SBCS, 2001. p. 73.$c2001
650 $asoil
650 $aSaúde
650 $aSolo
653 $aDiversidade
653 $aDiversity
653 $aHeath
653 $aMetabolic
653 $aMetabolica
653 $aSustainable
653 $aSustentabilidade
700 1 $aVASCONCELLOS, C. A.
700 1 $aFRANCA, G. E. de
700 1 $aSANTANA, D. P.
700 1 $aKONZEN, E. A.
700 1 $aOLIVEIRA, A. C. de
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Embrapa Milho e Sorgo (CNPMS) |
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