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| 1. |  | REIN. T. A.; DUXBURY, J. M. Modeling the soil organic carbon, texture and mineralogy relations in the profile of oxisols from the Brazilian Cerrado. In: SIMPÓSIO NACIONAL CERRADO, 9.; SIMPÓSIO INTERNACIONAL SAVANAS TROPICAIS, 2., 2008, Brasília, DF. Desafios e estratégias para o equilíbrio entre sociedade, agronegócio e recursos naturais: anais... Planaltina, DF: Embrapa Cerrados, 2008. 1 CD-ROM.| Biblioteca(s): Embrapa Cerrados. |
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| 10. | | KLAUSNER, S. D.; SUHET, A. R.; DUXBURY, J. M. Estimating Nitrogen Mineralization in a "Cerrado" Dark-Red Latosol, by Laboratory Incubation, and the Effect of Soil Sample Disturbance. Pesquisa Agropecuária Brasileira, Brasília, V. 25, n.4, p. 617-623, abr.1990| Biblioteca(s): Embrapa Unidades Centrais. |
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| 14. | | LADHA, J. K.; HILL, J. E.; DUXBURY, J. M.; GUPTA, R. K.; BURESH, R. J. (ed.). Improving the productivity and sustainability of rice-wheat systems: issues and impacts. Madison: ASA: CSSA: SSSA, 2003. 231 p. (ASA. Special Publication, 65). Proceedings of an international symposium cosponsored by Division A-6 (International Agronomy), the International Rice Research Institute (IRRI), and Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), held at the 2001 Annual...| Biblioteca(s): Embrapa Arroz e Feijão. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
06/08/2018 |
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Data da última atualização: |
06/08/2018 |
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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: |
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 2093915
005 2018-08-06
008 2018 bl --- 0-- 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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