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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
31/08/2018 |
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Data da última atualização: |
10/09/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CONGIO, G. F. S.; BATALHA, C. D. A.; CHIAVEGATO, M. B.; BERNDT, A.; OLIVEIRA, P. P. A.; FRIGHETTO, R. T. S.; MAXWELL, T. M. R.; GREGORINI, P.; SILVA, S. C. da. |
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Afiliação: |
GUILHERMO FRANCKLIN DE SOUZA CONGIO, ESALQ-USP; CAMILA DELVEAUX RAUJO BATALHA, ESALQ-USP; MARILIA BARBOSA CHIAVEGATO, ESALQ-USP; ALEXANDRE BERNDT, CPPSE; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; ROSA TOYOKO SHIRAISHI FRIGHETTO, CNPMA; THOMA M R MAXWELL, Lincoln University; PABLO GREGORINI, Lincoln University; SILA C DA SILVA, ESALQ-USP. |
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Título: |
Strategic grazing management towards sustainable intensification at tropical pasture-based dairy systems. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Science of the Total Environment, v. 636, p. 872-880, 2018. |
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DOI: |
https://doi.org/10.1016/j.scitotenv.2018.04.301 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Agricultural systems are responsible for environmental impacts that can be mitigated through the adoption of more sustainable principles. Our objective was to investigate the influence of two pre-grazing targets (95% and maximum canopy light interception during pasture regrowth; LI95% and LIMax, respectively) on sward structure and herbage nutritive value of elephant grass cv. Cameroon, and dry matter intake (DMI), milk yield, stocking rate, enteric methane (CH4) emissions by Holstein?×?Jersey dairy cows. We hypothesized that grazing strategies modifying the sward structure of elephant grass (Pennisetum purpureum Schum.) improves nutritive value of herbage, increasing DMI and reducing intensity of enteric CH4 emissions, providing environmental and productivity benefits to tropical pasture-based dairy systems. Results indicated that pre-sward surface height was greater for LIMax (?135?cm) than LI95% (?100?cm) and can be used as a reliable field guide for monitoring sward structure. Grazing management based on LI95% criteria improved herbage nutritive value and grazing efficiency, allowing greater DMI, milk yield and stocking rate by dairy cows. Daily enteric CH4 emission was not affected; however, cows grazing elephant grass at LI95% were more efficient and emitted 21% less CH4/kg of milk yield and 18% less CH4/kg of DMI. The 51% increase in milk yield per hectare overcame the 29% increase in enteric CH4 emissions per hectare in LI95% grazing management. Thereby the same resource allocation resulted in a 16% mitigation of the main greenhouse gas from pasture-based dairy systems. Overall, strategic grazing management is an environmental friendly practice that improves use efficiency of allocated resources through optimization of processes evolving plant, ruminant and their interface, and enhances milk production efficiency of tropical pasture-based systems. MenosAbstract: Agricultural systems are responsible for environmental impacts that can be mitigated through the adoption of more sustainable principles. Our objective was to investigate the influence of two pre-grazing targets (95% and maximum canopy light interception during pasture regrowth; LI95% and LIMax, respectively) on sward structure and herbage nutritive value of elephant grass cv. Cameroon, and dry matter intake (DMI), milk yield, stocking rate, enteric methane (CH4) emissions by Holstein?×?Jersey dairy cows. We hypothesized that grazing strategies modifying the sward structure of elephant grass (Pennisetum purpureum Schum.) improves nutritive value of herbage, increasing DMI and reducing intensity of enteric CH4 emissions, providing environmental and productivity benefits to tropical pasture-based dairy systems. Results indicated that pre-sward surface height was greater for LIMax (?135?cm) than LI95% (?100?cm) and can be used as a reliable field guide for monitoring sward structure. Grazing management based on LI95% criteria improved herbage nutritive value and grazing efficiency, allowing greater DMI, milk yield and stocking rate by dairy cows. Daily enteric CH4 emission was not affected; however, cows grazing elephant grass at LI95% were more efficient and emitted 21% less CH4/kg of milk yield and 18% less CH4/kg of DMI. The 51% increase in milk yield per hectare overcame the 29% increase in enteric CH4 emissions per hectare in LI95% grazing management. Thereby the... Mostrar Tudo |
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Palavras-Chave: |
Canopy light interception; Elephant grass; Enteric methane emissions; Herbage quality; Land-use improvement; Milk production efficiency. |
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Thesagro: |
Capim Elefante; Efeito Estufa; Gado Leiteiro; Impacto Ambiental; Pastagem; Pastejo; Produção Leiteira. |
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Thesaurus Nal: |
Animal feeding; Dairy cattle; Grazing management; Greenhouse gas emissions; Methane; Milk yield. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03267naa a2200457 a 4500
001 2094870
005 2018-09-10
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.scitotenv.2018.04.301$2DOI
100 1 $aCONGIO, G. F. S.
245 $aStrategic grazing management towards sustainable intensification at tropical pasture-based dairy systems.$h[electronic resource]
260 $c2018
520 $aAbstract: Agricultural systems are responsible for environmental impacts that can be mitigated through the adoption of more sustainable principles. Our objective was to investigate the influence of two pre-grazing targets (95% and maximum canopy light interception during pasture regrowth; LI95% and LIMax, respectively) on sward structure and herbage nutritive value of elephant grass cv. Cameroon, and dry matter intake (DMI), milk yield, stocking rate, enteric methane (CH4) emissions by Holstein?×?Jersey dairy cows. We hypothesized that grazing strategies modifying the sward structure of elephant grass (Pennisetum purpureum Schum.) improves nutritive value of herbage, increasing DMI and reducing intensity of enteric CH4 emissions, providing environmental and productivity benefits to tropical pasture-based dairy systems. Results indicated that pre-sward surface height was greater for LIMax (?135?cm) than LI95% (?100?cm) and can be used as a reliable field guide for monitoring sward structure. Grazing management based on LI95% criteria improved herbage nutritive value and grazing efficiency, allowing greater DMI, milk yield and stocking rate by dairy cows. Daily enteric CH4 emission was not affected; however, cows grazing elephant grass at LI95% were more efficient and emitted 21% less CH4/kg of milk yield and 18% less CH4/kg of DMI. The 51% increase in milk yield per hectare overcame the 29% increase in enteric CH4 emissions per hectare in LI95% grazing management. Thereby the same resource allocation resulted in a 16% mitigation of the main greenhouse gas from pasture-based dairy systems. Overall, strategic grazing management is an environmental friendly practice that improves use efficiency of allocated resources through optimization of processes evolving plant, ruminant and their interface, and enhances milk production efficiency of tropical pasture-based systems.
650 $aAnimal feeding
650 $aDairy cattle
650 $aGrazing management
650 $aGreenhouse gas emissions
650 $aMethane
650 $aMilk yield
650 $aCapim Elefante
650 $aEfeito Estufa
650 $aGado Leiteiro
650 $aImpacto Ambiental
650 $aPastagem
650 $aPastejo
650 $aProdução Leiteira
653 $aCanopy light interception
653 $aElephant grass
653 $aEnteric methane emissions
653 $aHerbage quality
653 $aLand-use improvement
653 $aMilk production efficiency
700 1 $aBATALHA, C. D. A.
700 1 $aCHIAVEGATO, M. B.
700 1 $aBERNDT, A.
700 1 $aOLIVEIRA, P. P. A.
700 1 $aFRIGHETTO, R. T. S.
700 1 $aMAXWELL, T. M. R.
700 1 $aGREGORINI, P.
700 1 $aSILVA, S. C. da
773 $tScience of the Total Environment$gv. 636, p. 872-880, 2018.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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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 Amazônia Oriental. |
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Data corrente: |
03/12/2013 |
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Data da última atualização: |
20/10/2022 |
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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: |
BAKER, I. T.; HARPER, A. B.; ROCHA, H. R. da; DENNING, A. S.; ARAUJO, A. C.; BORMA, L. S.; FREITAS, H. C.; GOULDE, M. L.; MANZI, A. O.; MILLER, S. D.; NOBRE, A. D.; RESTREPO-COUPE, N.; SALESKA, S. R.; STÖCKLI, R.; RANDOW, C. von; WOFSY, S. C. |
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Afiliação: |
COLORADO STATE UNIVERSITY; COLORADO STATE UNIVERSITY; HUMBERTO R. DA ROCHA, USP; COLORADO STATE UNIVERSITY; ALESSANDRO CARIOCA DE ARAUJO, CPATU; INPE; USP; UNIVERSITY OF CALIFORNIA; INPA; State University of New York at Albany; INPA / INPE; NATALIA RESTREPO-COUPE, UNIVERSITY OF ARIZONA / UNIVERSITY OF TECHNOLOGY; UNIVERSITY OF ARIZONA; Climate Services, Climate Analysis, MeteoSwiss; CELSO VON RANDOW, INPE; HARVARD UNIVERSITY. |
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Título: |
Surface ecophysiological behavior across vegetation and moisture gradients in tropical South America. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Agricultural and Forest Meteorology, v. 182-183, p. 177-188, Dec. 2013. |
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DOI: |
http://dx.doi.org/10.1016/j.agrformet.2012.11.015 |
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Idioma: |
Inglês |
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Conteúdo: |
Surface ecophysiology at five sites in tropical South America across vegetation and moisture gradients is investigated. From the moist northwest (Manaus) to the relatively dry southeast (Pé de Gigante, state of São Paulo) simulated seasonal cycles of latent and sensible heat, and carbon flux produced with the Simple Biosphere Model (SiB3) are confronted with observational data. In the northwest, abundant moisture is available, suggesting that the ecosystem is light-limited. In these wettest regions, Bowen ratio is consistently low, with little or no annual cycle. Carbon flux shows little or no annual cycle as well; efflux and uptake are determined by high-frequency variability in light and moisture availability. Moving downgradient in annual precipitation amount, dry season length is more clearly defined. In these regions, a dry season sink of carbon is observed and simulated. This sink is the result of the combination of increased photosynthetic production due to higher light levels, and decreased respiratory efflux due to soil drying. The differential response time of photosynthetic and respiratory processes produce observed annual cycles of net carbon flux. In drier regions, moisture and carbon fluxes are in-phase; there is carbon uptake during seasonal rains and efflux during the dry season. At the driest site, there is also a large annual cycle in latent and sensible heat flux. |
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Palavras-Chave: |
América do Sul; Ciclo do carbono; Ecofisiologia. |
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Thesaurus NAL: |
Amazonia. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/93479/1/Carioca1.pdf
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Marc: |
LEADER 02472naa a2200361 a 4500
001 1972831
005 2022-10-20
008 2013 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.agrformet.2012.11.015$2DOI
100 1 $aBAKER, I. T.
245 $aSurface ecophysiological behavior across vegetation and moisture gradients in tropical South America.$h[electronic resource]
260 $c2013
520 $aSurface ecophysiology at five sites in tropical South America across vegetation and moisture gradients is investigated. From the moist northwest (Manaus) to the relatively dry southeast (Pé de Gigante, state of São Paulo) simulated seasonal cycles of latent and sensible heat, and carbon flux produced with the Simple Biosphere Model (SiB3) are confronted with observational data. In the northwest, abundant moisture is available, suggesting that the ecosystem is light-limited. In these wettest regions, Bowen ratio is consistently low, with little or no annual cycle. Carbon flux shows little or no annual cycle as well; efflux and uptake are determined by high-frequency variability in light and moisture availability. Moving downgradient in annual precipitation amount, dry season length is more clearly defined. In these regions, a dry season sink of carbon is observed and simulated. This sink is the result of the combination of increased photosynthetic production due to higher light levels, and decreased respiratory efflux due to soil drying. The differential response time of photosynthetic and respiratory processes produce observed annual cycles of net carbon flux. In drier regions, moisture and carbon fluxes are in-phase; there is carbon uptake during seasonal rains and efflux during the dry season. At the driest site, there is also a large annual cycle in latent and sensible heat flux.
650 $aAmazonia
653 $aAmérica do Sul
653 $aCiclo do carbono
653 $aEcofisiologia
700 1 $aHARPER, A. B.
700 1 $aROCHA, H. R. da
700 1 $aDENNING, A. S.
700 1 $aARAUJO, A. C.
700 1 $aBORMA, L. S.
700 1 $aFREITAS, H. C.
700 1 $aGOULDE, M. L.
700 1 $aMANZI, A. O.
700 1 $aMILLER, S. D.
700 1 $aNOBRE, A. D.
700 1 $aRESTREPO-COUPE, N.
700 1 $aSALESKA, S. R.
700 1 $aSTÖCKLI, R.
700 1 $aRANDOW, C. von
700 1 $aWOFSY, S. C.
773 $tAgricultural and Forest Meteorology$gv. 182-183, p. 177-188, Dec. 2013.
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Embrapa Amazônia Oriental (CPATU) |
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