|
|
![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Florestas; Embrapa Pecuária Sudeste. |
Data corrente: |
22/11/2017 |
Data da última atualização: |
15/12/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
PONTES, L. da S.; BARRO, R. S.; SAVIAN, J. V.; BERNDT, A.; MOLETTA, J. L.; PORFIRIO-DA-SILVA, V.; BAYER, C.; CARVALHO, P. C. de F. |
Afiliação: |
Laíse da Silveira Pontes, IAPAR; Raquel Santiago Barro, UFRGS; Jean Victor Savian, UFRGS; ALEXANDRE BERNDT, CPPSE; José Luiz Moletta, IAPAR; VANDERLEY PORFIRIO DA SILVA, CNPF; Cimélio Bayer, UFRGS; Paulo César de Faccio Carvalho, UFRGS. |
Título: |
Performance and methane emissions by beef heifer grazing in temperate pastures and in integrated crop-livestock systems: the effect of shade and nitrogen fertilization. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Agriculture, Ecosystems and Environment, v. 253, p. 90-97, feb. 2018. |
DOI: |
doi.org/10.1016/j.agee.2017.11.009 |
Idioma: |
Inglês |
Conteúdo: |
Methane (CH4) emissions from enteric fermentation by cattle are the main source of greenhouse gases in livestock systems, but scarce information is available on the effect of production scenarios on CH4 emissions. The objective of this study was to assess animal performance and CH4 emissions by beef heifers grazing in a mixed Lolium multiflorum ×Avena strigosa pasture in two different types of integrated systems, crop-livestock only (CL) or crop-livestock-tree (CLT), and with two nitrogen (N) supply levels (90 and 180 kg N ha−1, N90 and N180, respectively). The study was performed during the winter season (i.e., stocking season) over three years (2012?2014). Pasture shading by 6- to 8-year-old trees in the CLT system led to a reduction in the total annual herbage accumulation of approximately 2.6 Mg dry matter ha−1 (−51%) and a reduction in winter carrying capacity of 0.5 stock units ha−1 in comparison to the CL system. Average daily gain (ADG) was reduced by 32% in CLT compared to CL. Average CH4 emissions were 163 ± 9.12 g CH4 day−1 in heifers with an initial average live weight (LW) of approximately 250 kg. Emissions of CH4 per kg of LW did not differ between treatments (P > 0.05) with a mean of 0.58 ± 0.030 g kg−1. However, there were significant differences between treatments and among years when CH4 was expressed in g kg ADG−1 and kg ha−1 day−1. Per unit area, CH4 production ranged between 0.51 ± 0.05 (CLT N180) and 0.86 ± 0.12 kg ha−1 day−1 (CL N180). Possible strategies to reduce losses in animal production in the CLT systems are discussed, as well as the potential of C sequestration by woody biomass of eucalyptus trees to mitigate CH4 emissions. MenosMethane (CH4) emissions from enteric fermentation by cattle are the main source of greenhouse gases in livestock systems, but scarce information is available on the effect of production scenarios on CH4 emissions. The objective of this study was to assess animal performance and CH4 emissions by beef heifers grazing in a mixed Lolium multiflorum ×Avena strigosa pasture in two different types of integrated systems, crop-livestock only (CL) or crop-livestock-tree (CLT), and with two nitrogen (N) supply levels (90 and 180 kg N ha−1, N90 and N180, respectively). The study was performed during the winter season (i.e., stocking season) over three years (2012?2014). Pasture shading by 6- to 8-year-old trees in the CLT system led to a reduction in the total annual herbage accumulation of approximately 2.6 Mg dry matter ha−1 (−51%) and a reduction in winter carrying capacity of 0.5 stock units ha−1 in comparison to the CL system. Average daily gain (ADG) was reduced by 32% in CLT compared to CL. Average CH4 emissions were 163 ± 9.12 g CH4 day−1 in heifers with an initial average live weight (LW) of approximately 250 kg. Emissions of CH4 per kg of LW did not differ between treatments (P > 0.05) with a mean of 0.58 ± 0.030 g kg−1. However, there were significant differences between treatments and among years when CH4 was expressed in g kg ADG−1 and kg ha−1 day−1. Per unit area, CH4 production ranged between 0.51 ± 0.05 (CLT N180) and... Mostrar Tudo |
Palavras-Chave: |
Black oat; C3 grasses; Eucalyptus dunnii; Gases de efeito estufa; ILPF; Italian ryegrass. |
Thesagro: |
Avena Strigosa; Lolium Multiflorum; Metano; Pastagem; Pecuária. |
Thesaurus Nal: |
Beef cattle; Greenhouse gases; Pastures. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02923naa a2200385 a 4500 001 2086617 005 2023-12-15 008 2018 bl uuuu u00u1 u #d 024 7 $adoi.org/10.1016/j.agee.2017.11.009$2DOI 100 1 $aPONTES, L. da S. 245 $aPerformance and methane emissions by beef heifer grazing in temperate pastures and in integrated crop-livestock systems$bthe effect of shade and nitrogen fertilization.$h[electronic resource] 260 $c2018 520 $aMethane (CH4) emissions from enteric fermentation by cattle are the main source of greenhouse gases in livestock systems, but scarce information is available on the effect of production scenarios on CH4 emissions. The objective of this study was to assess animal performance and CH4 emissions by beef heifers grazing in a mixed Lolium multiflorum ×Avena strigosa pasture in two different types of integrated systems, crop-livestock only (CL) or crop-livestock-tree (CLT), and with two nitrogen (N) supply levels (90 and 180 kg N ha−1, N90 and N180, respectively). The study was performed during the winter season (i.e., stocking season) over three years (2012?2014). Pasture shading by 6- to 8-year-old trees in the CLT system led to a reduction in the total annual herbage accumulation of approximately 2.6 Mg dry matter ha−1 (−51%) and a reduction in winter carrying capacity of 0.5 stock units ha−1 in comparison to the CL system. Average daily gain (ADG) was reduced by 32% in CLT compared to CL. Average CH4 emissions were 163 ± 9.12 g CH4 day−1 in heifers with an initial average live weight (LW) of approximately 250 kg. Emissions of CH4 per kg of LW did not differ between treatments (P > 0.05) with a mean of 0.58 ± 0.030 g kg−1. However, there were significant differences between treatments and among years when CH4 was expressed in g kg ADG−1 and kg ha−1 day−1. Per unit area, CH4 production ranged between 0.51 ± 0.05 (CLT N180) and 0.86 ± 0.12 kg ha−1 day−1 (CL N180). Possible strategies to reduce losses in animal production in the CLT systems are discussed, as well as the potential of C sequestration by woody biomass of eucalyptus trees to mitigate CH4 emissions. 650 $aBeef cattle 650 $aGreenhouse gases 650 $aPastures 650 $aAvena Strigosa 650 $aLolium Multiflorum 650 $aMetano 650 $aPastagem 650 $aPecuária 653 $aBlack oat 653 $aC3 grasses 653 $aEucalyptus dunnii 653 $aGases de efeito estufa 653 $aILPF 653 $aItalian ryegrass 700 1 $aBARRO, R. S. 700 1 $aSAVIAN, J. V. 700 1 $aBERNDT, A. 700 1 $aMOLETTA, J. L. 700 1 $aPORFIRIO-DA-SILVA, V. 700 1 $aBAYER, C. 700 1 $aCARVALHO, P. C. de F. 773 $tAgriculture, Ecosystems and Environment$gv. 253, p. 90-97, feb. 2018.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registro Completo
Biblioteca(s): |
Embrapa Hortaliças; Embrapa Meio-Norte. |
Data corrente: |
13/12/2012 |
Data da última atualização: |
13/12/2012 |
Tipo da produção científica: |
Circular Técnica |
Autoria: |
MAROUELLI, W. A.; BRAGA, M. B.; ANDRADE JUNIOR, A. S. de. |
Afiliação: |
WALDIR APARECIDO MAROUELLI, CNPH; MARCOS BRANDAO BRAGA, CNPH; ADERSON SOARES DE ANDRADE JUNIOR, CPAMN. |
Título: |
Irrigação na cultura da melancia. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Brasília, DF: Embrapa, 2012. |
Série: |
(Embrapa Hortaliças. Circular técnica, 108). |
ISSN: |
1415-3033 |
Idioma: |
Português |
Palavras-Chave: |
Irrigação subsuperficial. |
Thesagro: |
Irrigação localizada; Irrigação por aspersão; Irrigação por sulco; Melancia. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/72287/1/ct-1081.pdf
|
Marc: |
LEADER 00621nam a2200205 a 4500 001 1942564 005 2012-12-13 008 2012 bl uuuu u0uu1 u #d 022 $a1415-3033 100 1 $aMAROUELLI, W. A. 245 $aIrrigação na cultura da melancia.$h[electronic resource] 260 $aBrasília, DF: Embrapa$c2012 490 $a(Embrapa Hortaliças. Circular técnica, 108). 650 $aIrrigação localizada 650 $aIrrigação por aspersão 650 $aIrrigação por sulco 650 $aMelancia 653 $aIrrigação subsuperficial 700 1 $aBRAGA, M. B. 700 1 $aANDRADE JUNIOR, A. S. de
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Hortaliças (CNPH) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|