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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
22/03/1996 |
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Data da última atualização: |
22/03/1996 |
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Autoria: |
LEDOUX, P.; LOBATO, R. C. |
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Título: |
Contribuicao ao estudo bio-ecologico de Cassia grandis L.f. (Leguminosae). |
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Ano de publicação: |
1968 |
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Fonte/Imprenta: |
Ciencia e Cultura, v.20, n.2, p.502-503, jun. 1968. |
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Idioma: |
Português |
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Notas: |
Investigacoes de fitogeografia e de ecologia experimental nas savans equatoriais do Amapa, n.2. Resumo da comunicacao. |
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Conteúdo: |
Demonstrou-se a possibilidade de obter, na savana equatorial do Amapa, exemplares de C. grandis de 115 cm de algura, aproximadamente 12 meses apos o plantio de semente selecionadas, pre-tatadas, de idade de cerca de 60 dias, semeadas logo no inicio da estacao das chuvas. |
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Palavras-Chave: |
Amapa; Savana. |
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Thesagro: |
Cerrado. |
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Thesaurus Nal: |
Cassia grandis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00882naa a2200193 a 4500
001 1551205
005 1996-03-22
008 1968 bl --- 0-- u #d
100 1 $aLEDOUX, P.
245 $aContribuicao ao estudo bio-ecologico de Cassia grandis L.f. (Leguminosae).
260 $c1968
500 $aInvestigacoes de fitogeografia e de ecologia experimental nas savans equatoriais do Amapa, n.2. Resumo da comunicacao.
520 $aDemonstrou-se a possibilidade de obter, na savana equatorial do Amapa, exemplares de C. grandis de 115 cm de algura, aproximadamente 12 meses apos o plantio de semente selecionadas, pre-tatadas, de idade de cerca de 60 dias, semeadas logo no inicio da estacao das chuvas.
650 $aCassia grandis
650 $aCerrado
653 $aAmapa
653 $aSavana
700 1 $aLOBATO, R. C.
773 $tCiencia e Cultura$gv.20, n.2, p.502-503, jun. 1968.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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URL |
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
04/01/2010 |
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Data da última atualização: |
15/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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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. |
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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. |
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Título: |
Ruminal methane emission by dairy cattle in Southeast Brazil |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 66, n. 6, p. 742-750, dec. 2009. |
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DOI: |
https://doi.org/10.1590/S0103-90162009000600004 |
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Idioma: |
Inglês |
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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 |
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Palavras-Chave: |
Grupo genético; Hexafluoreto de enxofre; Manejo alimentar. |
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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/38331/1/PROCI-2009.00289.pdf
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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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