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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
17/02/2017 |
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Data da última atualização: |
30/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CUNHA, C. S.; LOPES, N. L.; VELOSO, C. M.; JACOVINE, L. A. G.; TOMICH, T. R.; PEREIRA, L. G. R.; MARCONDES, M. I. |
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Afiliação: |
C. S. CUNHA, UFV/VIÇOSA; N. L. LOPES, UFV/VIÇOSA; C. M. VELOSO, UFV/VIÇOSA; L. A. G. JACOVINE, UFV/VIÇOSA; THIERRY RIBEIRO TOMICH, CNPGL; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL; M. I. MARCONDES, UFV/VIÇOSA. |
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Título: |
Greenhouse gases inventory and carbon balance of two dairy systems obtained from two methane-estimation methods. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Science of The Total Environment, v. 571, p. 744-754, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract The adoption of carbon inventories for dairy farms in tropical countries based on models developed from animals and diets of temperate climates is questionable. Thus, the objectives of this study were to estimate enteric methane (CH4) emissions through the SF6 tracer gas technique and through equations proposed by the Intergovernmental Panel on Climate Change (IPCC) Tier 2 and to calculate the inventory of greenhouse gas (GHG) emissions from two dairy systems. In addition, the carbon balance of these properties was estimated using enteric CH4 emissions obtained using both methodologies. In trial 1, the CH4 emissions were estimated from seven Holstein dairy cattle categories based on the SF6 tracer gas technique and on IPCC equations. The categories used in the study were prepubertal heifers (n = 6); pubertal heifers (n = 4); pregnant heifers (n = 5); high-producing (n = 6); medium-producing (n = 5); low-producing (n = 4) and dry cows (n = 5). Enteric methane emission was higher for the category comprising prepubertal heifers when estimated by the equations proposed by the IPCC Tier 2. However, higher CH4 emissions were estimated by the SF6 technique in the categories including medium- and high-producing cows and dry cows. Pubertal heifers, pregnant heifers, and low-producing cows had equal CH4 emissions as estimated by both methods. In trial 2, two dairy farms were monitored for one year to identify all activities that contributed in any way to GHG emissions. The total emission from Farm 1 was 3.21 t CO2e/animal/yr, of which 1.63 t corresponded to enteric CH4. Farm 2 emitted 3.18 t CO2e/animal/yr, with 1.70 t of enteric CH4. IPCC estimations can underestimate CH4 emissions from some categories while overestimate others. However, considering the whole property, these discrepancies are offset and we would submit that the equations suggested by the IPCC properly estimate the total CH4 emission and carbon balance of the properties. Thus, the IPCC equations should be utilized with caution, and the herd composition should be analysed at the property level. When the carbon stock in pasture and other crops was considered, the carbon balance suggested that both farms are sustainable for GHG, by both methods. On the other hand, carbon balance without carbon stock, by both methods, suggests that farms emit more carbon than the system is capable of stock. MenosAbstract The adoption of carbon inventories for dairy farms in tropical countries based on models developed from animals and diets of temperate climates is questionable. Thus, the objectives of this study were to estimate enteric methane (CH4) emissions through the SF6 tracer gas technique and through equations proposed by the Intergovernmental Panel on Climate Change (IPCC) Tier 2 and to calculate the inventory of greenhouse gas (GHG) emissions from two dairy systems. In addition, the carbon balance of these properties was estimated using enteric CH4 emissions obtained using both methodologies. In trial 1, the CH4 emissions were estimated from seven Holstein dairy cattle categories based on the SF6 tracer gas technique and on IPCC equations. The categories used in the study were prepubertal heifers (n = 6); pubertal heifers (n = 4); pregnant heifers (n = 5); high-producing (n = 6); medium-producing (n = 5); low-producing (n = 4) and dry cows (n = 5). Enteric methane emission was higher for the category comprising prepubertal heifers when estimated by the equations proposed by the IPCC Tier 2. However, higher CH4 emissions were estimated by the SF6 technique in the categories including medium- and high-producing cows and dry cows. Pubertal heifers, pregnant heifers, and low-producing cows had equal CH4 emissions as estimated by both methods. In trial 2, two dairy farms were monitored for one year to identify all activities that contributed in any way to GHG emissions. The to... Mostrar Tudo |
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Palavras-Chave: |
Carbon equivalent; Methane emission. |
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Thesaurus Nal: |
dairy cattle; greenhouse gases; milk production; ruminants. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03189naa a2200265 a 4500
001 2064606
005 2023-01-30
008 2016 bl uuuu u00u1 u #d
100 1 $aCUNHA, C. S.
245 $aGreenhouse gases inventory and carbon balance of two dairy systems obtained from two methane-estimation methods.$h[electronic resource]
260 $c2016
520 $aAbstract The adoption of carbon inventories for dairy farms in tropical countries based on models developed from animals and diets of temperate climates is questionable. Thus, the objectives of this study were to estimate enteric methane (CH4) emissions through the SF6 tracer gas technique and through equations proposed by the Intergovernmental Panel on Climate Change (IPCC) Tier 2 and to calculate the inventory of greenhouse gas (GHG) emissions from two dairy systems. In addition, the carbon balance of these properties was estimated using enteric CH4 emissions obtained using both methodologies. In trial 1, the CH4 emissions were estimated from seven Holstein dairy cattle categories based on the SF6 tracer gas technique and on IPCC equations. The categories used in the study were prepubertal heifers (n = 6); pubertal heifers (n = 4); pregnant heifers (n = 5); high-producing (n = 6); medium-producing (n = 5); low-producing (n = 4) and dry cows (n = 5). Enteric methane emission was higher for the category comprising prepubertal heifers when estimated by the equations proposed by the IPCC Tier 2. However, higher CH4 emissions were estimated by the SF6 technique in the categories including medium- and high-producing cows and dry cows. Pubertal heifers, pregnant heifers, and low-producing cows had equal CH4 emissions as estimated by both methods. In trial 2, two dairy farms were monitored for one year to identify all activities that contributed in any way to GHG emissions. The total emission from Farm 1 was 3.21 t CO2e/animal/yr, of which 1.63 t corresponded to enteric CH4. Farm 2 emitted 3.18 t CO2e/animal/yr, with 1.70 t of enteric CH4. IPCC estimations can underestimate CH4 emissions from some categories while overestimate others. However, considering the whole property, these discrepancies are offset and we would submit that the equations suggested by the IPCC properly estimate the total CH4 emission and carbon balance of the properties. Thus, the IPCC equations should be utilized with caution, and the herd composition should be analysed at the property level. When the carbon stock in pasture and other crops was considered, the carbon balance suggested that both farms are sustainable for GHG, by both methods. On the other hand, carbon balance without carbon stock, by both methods, suggests that farms emit more carbon than the system is capable of stock.
650 $adairy cattle
650 $agreenhouse gases
650 $amilk production
650 $aruminants
653 $aCarbon equivalent
653 $aMethane emission
700 1 $aLOPES, N. L.
700 1 $aVELOSO, C. M.
700 1 $aJACOVINE, L. A. G.
700 1 $aTOMICH, T. R.
700 1 $aPEREIRA, L. G. R.
700 1 $aMARCONDES, M. I.
773 $tScience of The Total Environment$gv. 571, p. 744-754, 2016.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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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 Soja. |
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Data corrente: |
14/10/1992 |
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Data da última atualização: |
27/03/2015 |
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Autoria: |
HOMECHIN, M. |
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Afiliação: |
MARTIN HOMECHIN, CNPSo. |
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Título: |
Controle biológico de patógenos da soja. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Londrina: EMBRAPA-CNPSO, 1984. |
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Páginas: |
5 p. |
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Série: |
(EMBRAPA-CNPSO. Pesquisa em Andamento, 7). |
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ISSN: |
0100-7306 |
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Idioma: |
Português |
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Conteúdo: |
Microrganismos e plantas podem agir como reguladores ou mesmo exterminadores de outros, atuando em antagonismo ou competição. O controle biológico de microrganismos fitopatogênicos usualmente envolve a redução da sua atividade pela introdução de antagonistas, os quais atuam no processo doença pela interferência na germinação de microesclerócios, com ou sem degradação destes, pela inibição do desenvolvimento e do crescimento micelial, através da produção de antibióticos voláteis ou não, pelo entrelaçamento de hifasm, como é o caso do fungo antagônico Trichoderma sp. ou prevenindo o hospedeiro contra a penetração do patógeno. |
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Palavras-Chave: |
Brasil; Disease; Fungus; Paraná; Soybean. |
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Thesagro: |
Controle Biológico; Doença; Fungo; Soja. |
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Thesaurus NAL: |
biological control; fungi. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/77932/1/CNPSO-PESQ.-AND.-07-84.pdf
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Marc: |
LEADER 01317nam a2200277 a 4500
001 1444391
005 2015-03-27
008 1984 bl uuuu u0uu1 u #d
022 $a0100-7306
100 1 $aHOMECHIN, M.
245 $aControle biológico de patógenos da soja.
260 $aLondrina: EMBRAPA-CNPSO$c1984
300 $a5 p.
490 $a(EMBRAPA-CNPSO. Pesquisa em Andamento, 7).
520 $aMicrorganismos e plantas podem agir como reguladores ou mesmo exterminadores de outros, atuando em antagonismo ou competição. O controle biológico de microrganismos fitopatogênicos usualmente envolve a redução da sua atividade pela introdução de antagonistas, os quais atuam no processo doença pela interferência na germinação de microesclerócios, com ou sem degradação destes, pela inibição do desenvolvimento e do crescimento micelial, através da produção de antibióticos voláteis ou não, pelo entrelaçamento de hifasm, como é o caso do fungo antagônico Trichoderma sp. ou prevenindo o hospedeiro contra a penetração do patógeno.
650 $abiological control
650 $afungi
650 $aControle Biológico
650 $aDoença
650 $aFungo
650 $aSoja
653 $aBrasil
653 $aDisease
653 $aFungus
653 $aParaná
653 $aSoybean
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Registro original: |
Embrapa Soja (CNPSO) |
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