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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
14/01/2010 |
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Data da última atualização: |
02/06/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PEDREIRA, M. S.; PRIMAVESI, O.; LIMA, M. A. de; FRIGHETTO, R. T. S.; OLIVEIRA, S. G. de; BERCHIELLI, T. T. |
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Afiliação: |
MÁRIO DOS SANTOS PEDREIRA, UESB; ODO PRIMAVESI, CPPSE; MAGDA APARECIDA DE LIMA, CNPMA; ROSA TOYOKO SHIRAISHI FRIGHETTO, CNPMA; SIMONE GISELE DE OLIVEIRA, UFPR; TELMA TERESINHA BERCHIELLI, FCAV/UNESP. |
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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, 2009. |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT: 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 (CH 4) 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 (SF 6), 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. CH 4 and SF 6 levels were measured with gas chromatography. Differences in CH4 emissions were measured (p < 0.05) for genetical groups. Holstein produced more methane (299.3g 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. MenosABSTRACT: 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 (CH 4) 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 (SF 6), 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. CH 4 and SF 6 levels were measured with gas chromatography. Differences in CH4 emissions were measured (p < 0.05) for genetical groups. Holstein produced more methane (299.3g 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 da... Mostrar Tudo |
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Thesagro: |
Metano; Pecuária. |
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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/143782/1/2009AP-11.pdf
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Marc: |
LEADER 02280naa a2200205 a 4500
001 1580379
005 2016-06-02
008 2009 bl uuuu u00u1 u #d
100 1 $aPEDREIRA, M. S.
245 $aRuminal methane emission by dairy cattle in southeast Brazil.$h[electronic resource]
260 $c2009
520 $aABSTRACT: 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 (CH 4) 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 (SF 6), 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. CH 4 and SF 6 levels were measured with gas chromatography. Differences in CH4 emissions were measured (p < 0.05) for genetical groups. Holstein produced more methane (299.3g 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.
650 $aMetano
650 $aPecuária
700 1 $aPRIMAVESI, O.
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, 2009.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos; Embrapa Algodão. |
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Data corrente: |
05/01/2001 |
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Data da última atualização: |
24/05/2012 |
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Autoria: |
ARRIEL, N. H. C.; VIEIRA, D. J.; ANDRADE, F. P. de; BOUTY, F. de A. C.; COUTINHO, J. L. B.; AMIM, S. M. F.; ANTONIASSI, R.; FIRMINO, P. de T.; GUEDES, A. R.; ALENCAR, A. R. de; BIDO, L. |
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Título: |
Melhoramento genetico do gergelim para o nordeste. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Campina Grande: EMBRAPA-CNPA, 1999. |
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Páginas: |
10p. |
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Série: |
(EMBRAPA. CNPA. Comunicado Tecnico, 106) |
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Idioma: |
Português |
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Conteúdo: |
Através dos trabalhos de difusão e transferência das tecnologias geradas e adaptadas pela Embrapa Algodão, como o uso de cultivar e espaçamento recomendado pela pesquisa, os produtores têm obtido melhores rendimentos, passando de 300 a 500/ha para 600 a 800 kg/ha, havendo casos em que chegou-se a produzir em condições de sequeiro 1200 kg/ha, de acordo com informacões da Área de Transferência de Tecnologia do Centro. Descrição das cultivares de gergelim desenvolvidas pela Embrapa Algodão. |
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Palavras-Chave: |
Adaptabilidade; Adaptability; Brasil; Genetic breeding; Genetic variability; Melhoramento genetico; Nordeste; Northeast; Sesame; Variabilidade genetica. |
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Thesagro: |
Gergelim; Melhoramento Genético Vegetal; Sesamum Indicum; Variedade. |
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Thesaurus NAL: |
Brazil; breeding; varieties. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/59993/1/COMTEC106.pdf
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Marc: |
LEADER 01700nam a2200457 a 4500
001 1271614
005 2012-05-24
008 1999 bl uuuu u0uu1 u #d
100 1 $aARRIEL, N. H. C.
245 $aMelhoramento genetico do gergelim para o nordeste.
260 $aCampina Grande: EMBRAPA-CNPA$c1999
300 $a10p.
490 $a(EMBRAPA. CNPA. Comunicado Tecnico, 106)
520 $aAtravés dos trabalhos de difusão e transferência das tecnologias geradas e adaptadas pela Embrapa Algodão, como o uso de cultivar e espaçamento recomendado pela pesquisa, os produtores têm obtido melhores rendimentos, passando de 300 a 500/ha para 600 a 800 kg/ha, havendo casos em que chegou-se a produzir em condições de sequeiro 1200 kg/ha, de acordo com informacões da Área de Transferência de Tecnologia do Centro. Descrição das cultivares de gergelim desenvolvidas pela Embrapa Algodão.
650 $aBrazil
650 $abreeding
650 $avarieties
650 $aGergelim
650 $aMelhoramento Genético Vegetal
650 $aSesamum Indicum
650 $aVariedade
653 $aAdaptabilidade
653 $aAdaptability
653 $aBrasil
653 $aGenetic breeding
653 $aGenetic variability
653 $aMelhoramento genetico
653 $aNordeste
653 $aNortheast
653 $aSesame
653 $aVariabilidade genetica
700 1 $aVIEIRA, D. J.
700 1 $aANDRADE, F. P. de
700 1 $aBOUTY, F. de A. C.
700 1 $aCOUTINHO, J. L. B.
700 1 $aAMIM, S. M. F.
700 1 $aANTONIASSI, R.
700 1 $aFIRMINO, P. de T.
700 1 $aGUEDES, A. R.
700 1 $aALENCAR, A. R. de
700 1 $aBIDO, L.
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Registro original: |
Embrapa Algodão (CNPA) |
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