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Registros recuperados : 34 | |
6. | | BEELEN, P. M. G.; BERCHIELLI, T. T.; ARAUJO FILHO, J. A. de; OLIVEIRA, S. G. de. Characterization of condensed tannins from native legumes of the brazilian Northeastern Semi-arid. Scientia Agricola, Piracicaba, v. 63, n. 6, p. 522-528, nov./dez., 2006. Biblioteca(s): Embrapa Caprinos e Ovinos. |
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13. | | OLIVEIRA, S. G. de; BERCHIELLI, T. T.; PEDREIRA, M. S.; PRIMAVESI, O.; FRIGHETTO, R. T. S.; LIMA, M. A. de. Effect of tannin levels in sorghum silage and concentrate supplementation on apparent digestibility and methane emission in beef cattle. Animal Feed Science and Technology, Amsterdam, v.135, 3-4, p.236-248, 2007. Biblioteca(s): Embrapa Meio Ambiente. |
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14. | | KIILL, L. H. P.; DRUMOND, M. A.; LIMA, P. C. F.; OLIVEIRA, S. G. de; OLIVEIRA, V. R. de. Como manejar a Caatinga? Brasília, DF: Embrapa Informação Tecnológica, [2004]. 19 p. il. (ABC da agricultura familiar. Preservação e uso da Caatinga, 2). Autoria: OLIVEIRA [i.e. ALBUQUERQUE], S. G. de. Título da série na capa: Conservação, preservação e uso da Caatinga. Biblioteca(s): Embrapa Agropecuária Oeste; Embrapa Amazônia Ocidental; Embrapa Gado de Corte; Embrapa Meio-Norte; Embrapa Milho e Sorgo; Embrapa Pantanal; Embrapa Unidades Centrais. |
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15. | | PEDREIRA, M. dos S.; BERCHIELLI, T. T.; OLIVEIRA, S. G. de; PRIMAVESI, O.; LIMA, M. A.; FRIGHETTO, R. Produção de metano e concentração de ácidos gráxos voláteis ruminal em bovinos alimentados com diferentes relações de volumoso: concentrado. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 41., 2004, Campo Grande, MS. Anais... Campo Grande: SBZ, 2004. 5 f. 1 CD-ROM. Biblioteca(s): Embrapa Pecuária Sudeste. |
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17. | | BERCHIELLI, T. T.; PEDREIRA, M. dos S.; OLIVEIRA, S. G. de O.; PRIMAVESI, O.; LIMAS, M.; FRIGUETO, R. Determinação da produção de metano e PH ruminal em bovinos de corte alimentados com diferentes relações volumoso: concentrado. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 40., 2003, Santa Maria, RS. Anais... Santa Maria: SBZ, 2003. 1 CD-ROM. 6f. Biblioteca(s): Embrapa Pecuária Sudeste. |
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19. | | KIILL, L. H. P.; DRUMOND, M. A.; LIMA, P. C. F.; OLIVEIRA, S. G. de; OLIVEIRA, V. R. de. O que é a Caatinga e por que conservá-la? Brasília, DF: Embrapa Informação Tecnológica, [2004]. 18 p. il. (ABC da Agricultura familiar. Preservação e uso da Caatinga, 1). Autoria: OLIVEIRA [i.e. ALBUQUERQUE], S. G. de. Título da série na capa: Conservação, preservação e uso da Caatinga. Biblioteca(s): Embrapa Agropecuária Oeste; Embrapa Meio-Norte; Embrapa Milho e Sorgo. |
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20. | | PEDREIRA, M. S.; PRIMAVESI, O.; LIMA, M. A. de; FRIGHETTO, R. T. S.; OLIVEIRA, S. G. de; BERCHIELLI, T. T. Ruminal methane emission by dairy cattle in southeast Brazil. Scientia Agricola, Piracicaba, v. 66, n. 6, p. 742-750, 2009. Biblioteca(s): Embrapa Meio Ambiente. |
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Registros recuperados : 34 | |
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Registro Completo
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
Data corrente: |
04/01/2010 |
Data da última atualização: |
15/03/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
PEDREIRA, M. dos S.; PRIMAVESI, O. M. A. S. P. R.; LIMA, M. A. de; FRIGHETTO, R. T. S.; OLIVEIRA, S. G. de; BERCHIELLI, T. T. |
Afiliação: |
MÁRCIO DOS SANTOS PEDREIRA, UESB - ITAPETINGA, BA; ODO MARIA ARTUR S P R PRIMAVESI, CPPSE; MAGDA APARECIDA DE LIMA, CNPMA; ROSA TOYOKO SHIRAISHI FRIGHETTO, CNPMA; SIMONE GISELE DE OLIVEIRA, UFPR - CURITIBA; TELMA TEREZINHA BERCHIELLI, UNESP - JABOTICABAL. |
Título: |
Ruminal methane emission by dairy cattle in Southeast Brazil |
Ano de publicação: |
2009 |
Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 66, n. 6, p. 742-750, dec. 2009. |
DOI: |
https://doi.org/10.1590/S0103-90162009000600004 |
Idioma: |
Inglês |
Conteúdo: |
Ruminal gases, particularly methane, generated during the fermentative process in rumen, represent a partial loss of feed energy and are also pointed to as an important factors in greenhouse effect. This study aimed at quantifying methane (CH4) emission rates from lactating and dry cows and heifers, 24 month-old in average, on pasture under Southeast Brazil tropical conditions, using the tracer gas technique, sulphur hexafluoride (SF6), four animals per category, distributed in four blocks. Measurements were performed in February and June, 2002, with Holstein and Brazilian Dairy Crossbred (Holstein ¾ x Gir (Zebu) ¼), maintained on fertilized Tanzania-grass (Panicum maximum Jacq. cv. Tanzania) and fertilized Brachiaria-grass (Brachiaria decumbens cv. Basilisk) pastures. Heifers of both breeds were maintained on unfertilized Brachiaria-grass to simulate conditions of extensive cattle farming systems. CH4 and SF6 levels were measured with gas chromatography. Differences in CH4 emissions were measured (p < 0.05) for genetical groups. Holstein produced more methane (299.3 g day-1) than the Crossbred (264.2 g day-1). Lactating cows produced more methane (353.8 g day-1) than dry cows (268.8 g day-1) and heifers (222.6 g day-1). Holstein, with greater milk production potential, produced less CH4 (p < 0.05) per unit of dry matter intake (19.1 g kg-1) than the Crossbred (22.0 g kg-1). Methane emission by heifers grazing fertilized pasture (intensive system) was 222.6 g day-1, greater (p < 0.05) than that of heifers on unfertilized pasture (179.2 g day-1). Methane emission varied as function of animal category and management intensity of production system. MenosRuminal gases, particularly methane, generated during the fermentative process in rumen, represent a partial loss of feed energy and are also pointed to as an important factors in greenhouse effect. This study aimed at quantifying methane (CH4) emission rates from lactating and dry cows and heifers, 24 month-old in average, on pasture under Southeast Brazil tropical conditions, using the tracer gas technique, sulphur hexafluoride (SF6), four animals per category, distributed in four blocks. Measurements were performed in February and June, 2002, with Holstein and Brazilian Dairy Crossbred (Holstein ¾ x Gir (Zebu) ¼), maintained on fertilized Tanzania-grass (Panicum maximum Jacq. cv. Tanzania) and fertilized Brachiaria-grass (Brachiaria decumbens cv. Basilisk) pastures. Heifers of both breeds were maintained on unfertilized Brachiaria-grass to simulate conditions of extensive cattle farming systems. CH4 and SF6 levels were measured with gas chromatography. Differences in CH4 emissions were measured (p < 0.05) for genetical groups. Holstein produced more methane (299.3 g day-1) than the Crossbred (264.2 g day-1). Lactating cows produced more methane (353.8 g day-1) than dry cows (268.8 g day-1) and heifers (222.6 g day-1). Holstein, with greater milk production potential, produced less CH4 (p < 0.05) per unit of dry matter intake (19.1 g kg-1) than the Crossbred (22.0 g kg-1). Methane emission by heifers grazing fertilized pasture (intensive system) was 222.6 g day-1, greater ... Mostrar Tudo |
Palavras-Chave: |
Grupo genético; Hexafluoreto de enxofre; Manejo alimentar. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/38331/1/PROCI-2009.00289.pdf
|
Marc: |
LEADER 02415naa a2200229 a 4500 001 1579298 005 2023-03-15 008 2009 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1590/S0103-90162009000600004$2DOI 100 1 $aPEDREIRA, M. dos S. 245 $aRuminal methane emission by dairy cattle in Southeast Brazil$h[electronic resource] 260 $c2009 520 $aRuminal gases, particularly methane, generated during the fermentative process in rumen, represent a partial loss of feed energy and are also pointed to as an important factors in greenhouse effect. This study aimed at quantifying methane (CH4) emission rates from lactating and dry cows and heifers, 24 month-old in average, on pasture under Southeast Brazil tropical conditions, using the tracer gas technique, sulphur hexafluoride (SF6), four animals per category, distributed in four blocks. Measurements were performed in February and June, 2002, with Holstein and Brazilian Dairy Crossbred (Holstein ¾ x Gir (Zebu) ¼), maintained on fertilized Tanzania-grass (Panicum maximum Jacq. cv. Tanzania) and fertilized Brachiaria-grass (Brachiaria decumbens cv. Basilisk) pastures. Heifers of both breeds were maintained on unfertilized Brachiaria-grass to simulate conditions of extensive cattle farming systems. CH4 and SF6 levels were measured with gas chromatography. Differences in CH4 emissions were measured (p < 0.05) for genetical groups. Holstein produced more methane (299.3 g day-1) than the Crossbred (264.2 g day-1). Lactating cows produced more methane (353.8 g day-1) than dry cows (268.8 g day-1) and heifers (222.6 g day-1). Holstein, with greater milk production potential, produced less CH4 (p < 0.05) per unit of dry matter intake (19.1 g kg-1) than the Crossbred (22.0 g kg-1). Methane emission by heifers grazing fertilized pasture (intensive system) was 222.6 g day-1, greater (p < 0.05) than that of heifers on unfertilized pasture (179.2 g day-1). Methane emission varied as function of animal category and management intensity of production system. 653 $aGrupo genético 653 $aHexafluoreto de enxofre 653 $aManejo alimentar 700 1 $aPRIMAVESI, O. M. A. S. P. R. 700 1 $aLIMA, M. A. de 700 1 $aFRIGHETTO, R. T. S. 700 1 $aOLIVEIRA, S. G. de 700 1 $aBERCHIELLI, T. T. 773 $tScientia Agricola, Piracicaba$gv. 66, n. 6, p. 742-750, dec. 2009.
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