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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
21/01/2008 |
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Data da última atualização: |
21/01/2008 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
SOUZA SOBRINHO, F. de; MAGALHÃES, J. R.; VENÂNCIO, D. de F. A.; MARCATO, R.; AUAD, A. M.; PEREIRA, A. V.; LÉDO, F. J. da S.; FONSECA, C. S. |
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Afiliação: |
Fausto de Souza Sobrinho, Embrapa Gado de Leite; José Ronaldo Magalhães, Embrapa Gado de Leite; Daniele de Fátima Alves Venâncio, CES-JF; R. Marcato, UFJF; Alexander Machado Auad, Embrapa Gado de Leite; Antônio Vander Pereira, Embrapa Gado de Leite; Francisco José da Silva Lédo, Embrapa Gado de Leite; Cristiane Souza Fonseca, Embrapa Gado de Leite. |
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Título: |
Variabilidade dentro de Brachiaria ruziziensis para tolerância ao alumínio tóxico em solução nutritiva. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: REUNIÓN ASOCIACÓN LATINOAMERICANA DE PRODUCCIÓN ANIMAL, 20., REUNIÓN ASOCIACIÓN PERUANA DE PRODUCCIÓN ANIMAL, 30., CONGRESO INTERNACIONAL DE GANADERIA DOBLE PROPOSITO, 5., 2007, Cuzco. Anais... Cuzco: ALPA/APPA, 2007. 1 CD. |
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Idioma: |
Português |
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Palavras-Chave: |
Estresse abiótico; melhoramento de forrageiras. |
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Thesagro: |
Forragem. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00886naa a2200229 a 4500
001 1595346
005 2008-01-21
008 2007 bl --- 0-- u #d
100 1 $aSOUZA SOBRINHO, F. de
245 $aVariabilidade dentro de Brachiaria ruziziensis para tolerância ao alumínio tóxico em solução nutritiva.
260 $c2007
650 $aForragem
653 $aEstresse abiótico
653 $amelhoramento de forrageiras
700 1 $aMAGALHÃES, J. R.
700 1 $aVENÂNCIO, D. de F. A.
700 1 $aMARCATO, R.
700 1 $aAUAD, A. M.
700 1 $aPEREIRA, A. V.
700 1 $aLÉDO, F. J. da S.
700 1 $aFONSECA, C. S.
773 $tIn: REUNIÓN ASOCIACÓN LATINOAMERICANA DE PRODUCCIÓN ANIMAL, 20., REUNIÓN ASOCIACIÓN PERUANA DE PRODUCCIÓN ANIMAL, 30., CONGRESO INTERNACIONAL DE GANADERIA DOBLE PROPOSITO, 5., 2007, Cuzco. Anais... Cuzco: ALPA/APPA, 2007. 1 CD.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
21/12/2020 |
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Data da última atualização: |
22/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SAKAMOTO, L. S.; BERNDT, A.; PEDROSO, A. de F.; LEMES, A. P.; AZENHA, M. V.; ALVES, T. C.; RODRIGUES, P. H. M.; CORTE, R. R.; LEME, P. R.; OLIVEIRA, P. P. A. |
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Afiliação: |
Leandro S. Sakamoto, USP; ALEXANDRE BERNDT, CPPSE; ANDRE DE FARIA PEDROSO, CPPSE; Amanda P. Lemes, USP; Mariana V. Azenha, USP; TERESA CRISTINA ALVES, CPPSE; Paulo H. M. Rodrigues, USP; Rosana R. Corte, USP; Paulo R. Leme, USP; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE. |
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Título: |
Pasture intensification in beef cattle production can affect methane emission intensity. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Journal of Animal Science, v. 98, n. 10, p. 1?15, sep. 2020. |
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DOI: |
10.1093/jas/skaa309 |
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Idioma: |
Inglês |
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Conteúdo: |
Increasing greenhouse gas (GHG) emissions from anthropogenic activities have contributed to global warming and consequently to climate change. Among all sources of emissions, the agricultural sector accounts for just under a quarter, mainly because of the intensification of food production systems necessary to supply the growing demand of the population. As ruminal fermentation is the largest source of methane emission in the livestock industry, emission by cattle has become the focus of studies. The aim of this study was to evaluate enteric methane emission and emission intensities of Nellore cattle at different ages submitted to levels of intensification of the grazing system. Twenty-four animals per cycle (age of 21.8 and 13.1 mo in cycles 1 and 2, respectively) were randomly distributed across different grazing systems: irrigated pasture with a high stocking rate (IHS), dryland pasture with a high stocking rate (DHS), recovering dryland pasture with a moderate stocking rate (DMS), and degraded pasture with a low stocking rate (DP). Methane emission was measured using the sulfur hexafluoride technique in each season of the cycle. Intensive systems provided higher yields of good-quality forage as well as superior animal performance when compared with DP. Methane yields were different between seasons and cycles. Methane emissions per average daily weight gain and dry matter digestible intake were different between treatments. Differences in the results were observed when they were analyzed per hectare, with the highest gain yield (P = 0.0134), stocking rate, weight gain, carcass production, and total methane emission (P < 0.0001) being found for the intensive systems. There were no differences in emissions per weight gain or carcass production between production systems, while a difference was observed between cycles (P = 0.0189 and P = 0.0255, respectively), resulting in lower emission intensities for younger animals. We conclude that more intensive systems resulted in a higher kilograms production of carcass per hectare; however, animals at 19 mo of age raised in the IHS and DMS systems had a lower emission intensity in kilogram of CO2-eq. per kilogram of carcass. Moderate intensification (DMS) using animals at about 19 mo of age might be an effective strategy to mitigate GHG emissions from Brazilian tropical pastures. Further studies are needed to understand the relationship between increasing productivity and decreasing environmental impacts, especially methane emission from ruminants. MenosIncreasing greenhouse gas (GHG) emissions from anthropogenic activities have contributed to global warming and consequently to climate change. Among all sources of emissions, the agricultural sector accounts for just under a quarter, mainly because of the intensification of food production systems necessary to supply the growing demand of the population. As ruminal fermentation is the largest source of methane emission in the livestock industry, emission by cattle has become the focus of studies. The aim of this study was to evaluate enteric methane emission and emission intensities of Nellore cattle at different ages submitted to levels of intensification of the grazing system. Twenty-four animals per cycle (age of 21.8 and 13.1 mo in cycles 1 and 2, respectively) were randomly distributed across different grazing systems: irrigated pasture with a high stocking rate (IHS), dryland pasture with a high stocking rate (DHS), recovering dryland pasture with a moderate stocking rate (DMS), and degraded pasture with a low stocking rate (DP). Methane emission was measured using the sulfur hexafluoride technique in each season of the cycle. Intensive systems provided higher yields of good-quality forage as well as superior animal performance when compared with DP. Methane yields were different between seasons and cycles. Methane emissions per average daily weight gain and dry matter digestible intake were different between treatments. Differences in the results were observed when th... Mostrar Tudo |
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Palavras-Chave: |
Enteric fermentation; Sustainability. |
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Thesagro: |
Bos Indicus; Gado Nelore. |
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Thesaurus NAL: |
Grasslands; Sulfur hexafluoride. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 03439naa a2200313 a 4500
001 2128493
005 2020-12-22
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1093/jas/skaa309$2DOI
100 1 $aSAKAMOTO, L. S.
245 $aPasture intensification in beef cattle production can affect methane emission intensity.$h[electronic resource]
260 $c2020
520 $aIncreasing greenhouse gas (GHG) emissions from anthropogenic activities have contributed to global warming and consequently to climate change. Among all sources of emissions, the agricultural sector accounts for just under a quarter, mainly because of the intensification of food production systems necessary to supply the growing demand of the population. As ruminal fermentation is the largest source of methane emission in the livestock industry, emission by cattle has become the focus of studies. The aim of this study was to evaluate enteric methane emission and emission intensities of Nellore cattle at different ages submitted to levels of intensification of the grazing system. Twenty-four animals per cycle (age of 21.8 and 13.1 mo in cycles 1 and 2, respectively) were randomly distributed across different grazing systems: irrigated pasture with a high stocking rate (IHS), dryland pasture with a high stocking rate (DHS), recovering dryland pasture with a moderate stocking rate (DMS), and degraded pasture with a low stocking rate (DP). Methane emission was measured using the sulfur hexafluoride technique in each season of the cycle. Intensive systems provided higher yields of good-quality forage as well as superior animal performance when compared with DP. Methane yields were different between seasons and cycles. Methane emissions per average daily weight gain and dry matter digestible intake were different between treatments. Differences in the results were observed when they were analyzed per hectare, with the highest gain yield (P = 0.0134), stocking rate, weight gain, carcass production, and total methane emission (P < 0.0001) being found for the intensive systems. There were no differences in emissions per weight gain or carcass production between production systems, while a difference was observed between cycles (P = 0.0189 and P = 0.0255, respectively), resulting in lower emission intensities for younger animals. We conclude that more intensive systems resulted in a higher kilograms production of carcass per hectare; however, animals at 19 mo of age raised in the IHS and DMS systems had a lower emission intensity in kilogram of CO2-eq. per kilogram of carcass. Moderate intensification (DMS) using animals at about 19 mo of age might be an effective strategy to mitigate GHG emissions from Brazilian tropical pastures. Further studies are needed to understand the relationship between increasing productivity and decreasing environmental impacts, especially methane emission from ruminants.
650 $aGrasslands
650 $aSulfur hexafluoride
650 $aBos Indicus
650 $aGado Nelore
653 $aEnteric fermentation
653 $aSustainability
700 1 $aBERNDT, A.
700 1 $aPEDROSO, A. de F.
700 1 $aLEMES, A. P.
700 1 $aAZENHA, M. V.
700 1 $aALVES, T. C.
700 1 $aRODRIGUES, P. H. M.
700 1 $aCORTE, R. R.
700 1 $aLEME, P. R.
700 1 $aOLIVEIRA, P. P. A.
773 $tJournal of Animal Science$gv. 98, n. 10, p. 1?15, sep. 2020.
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