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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
22/05/2018 |
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Data da última atualização: |
25/02/2019 |
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Autoria: |
FRANZONI, A. P. S.; GLORIA, J. R. da; COSTA, A. L. B. de S. A.; MARTINS, R. A.; AMARAL, T. F.; AZEVEDO, R. A. de; CAMPOS, E. F.; COELHO, S. G. |
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Afiliação: |
Ana Paula Saldanha Franzoni, Universidade Federal de Minas Gerais/Escola de Veterinária; Joana Ribeiro da Gloria, Universidade Federal de Minas Gerais/Escola de Veterinária; Anna Luiza Belli de Souza Alves Costa, Universidade Federal de Minas Gerais/Escola de Veterinária; Ronaldo Alves Martins, Universidade Federal de Minas Gerais/Escola de Veterinária; Thiago Fernandes Amaral, Faculdade Alis de Bom Despach; Rafael Alves de Azevedo, Universidade Federal de Minas Gerais/Escola de Veterinária; Ernane Ferreira Campos, ReHagro; Sandra Gesteira Coelho, Universidade Federal de Minas Gerais/Escola de Veterinária. |
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Título: |
Metabolic and hormone profiles of Holstein x Gyr cows during pre- and postpartum. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 3, p. 371-377, mar. 2018. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Perfis metabólico e hormonal de vacas Girolando em pré e pós-parto. |
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Conteúdo: |
The objective of this work was to describe the effect of genetic composition on body condition score (BCS), on total lactation production, and on metabolic and hormone profiles of Holstein x Gyr cows under the same pre- and postpartum management conditions. The genetic groups ½ (n=8), ¾ (n=10), and ?? (n=10) Holstein x Gyr (HG) were evaluated within the same farm, and all of them showed typical lactation curves. The time required to reach peak production did not differ between groups. The groups also did not differ as to time to reach the lowest BCS after calving or to recover BCS after calving, nor as to their BCS values in the week of first ovulation, number of weeks required for first ovulation, and service period. However, ½ HG cows had higher BCS at calving, but also greater BCS loss postpartum. Total lactation production and plasma insulin concentrations of ¾ HG cows postpartum were similar to those of cows specifically selected for milk production. Using parameters obtained with Holstein cows to determine management conditions in farms with crossbred cows can have unwanted consequences, since these animals have different metabolic and hormone profiles. |
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Palavras-Chave: |
GH; IGF-1; Período de transição. |
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Thesagro: |
Bos Indicus; Bos Taurus; Curva de Lactação. |
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Thesaurus Nal: |
Cattle; Lactation curve; Zebu. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/177465/1/Metabolic-and-hormone-profiles-of-Holstein.pdf
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Marc: |
LEADER 02186naa a2200325 a 4500
001 2091832
005 2019-02-25
008 2018 bl uuuu u00u1 u #d
100 1 $aFRANZONI, A. P. S.
245 $aMetabolic and hormone profiles of Holstein x Gyr cows during pre- and postpartum.$h[electronic resource]
260 $c2018
500 $aTítulo em português: Perfis metabólico e hormonal de vacas Girolando em pré e pós-parto.
520 $aThe objective of this work was to describe the effect of genetic composition on body condition score (BCS), on total lactation production, and on metabolic and hormone profiles of Holstein x Gyr cows under the same pre- and postpartum management conditions. The genetic groups ½ (n=8), ¾ (n=10), and ?? (n=10) Holstein x Gyr (HG) were evaluated within the same farm, and all of them showed typical lactation curves. The time required to reach peak production did not differ between groups. The groups also did not differ as to time to reach the lowest BCS after calving or to recover BCS after calving, nor as to their BCS values in the week of first ovulation, number of weeks required for first ovulation, and service period. However, ½ HG cows had higher BCS at calving, but also greater BCS loss postpartum. Total lactation production and plasma insulin concentrations of ¾ HG cows postpartum were similar to those of cows specifically selected for milk production. Using parameters obtained with Holstein cows to determine management conditions in farms with crossbred cows can have unwanted consequences, since these animals have different metabolic and hormone profiles.
650 $aCattle
650 $aLactation curve
650 $aZebu
650 $aBos Indicus
650 $aBos Taurus
650 $aCurva de Lactação
653 $aGH
653 $aIGF-1
653 $aPeríodo de transição
700 1 $aGLORIA, J. R. da
700 1 $aCOSTA, A. L. B. de S. A.
700 1 $aMARTINS, R. A.
700 1 $aAMARAL, T. F.
700 1 $aAZEVEDO, R. A. de
700 1 $aCAMPOS, E. F.
700 1 $aCOELHO, S. G.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 53, n. 3, p. 371-377, mar. 2018.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
15/12/2009 |
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Data da última atualização: |
08/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - B |
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Autoria: |
KELLER, M.; VARNER, R.; DIAS, J. D.; SILVA, H.; CRILL, P.; OLIVEIRA JUNIOR, R. C. de; ASNER, G. P. |
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Afiliação: |
MICHAEL KELLER, International Institute of Tropical Forestry, USDA Forest Service / University of New Hampshire; RUTH VARNER, University of New Hampshire; JADSON D. DIAS, Fundação Floresta Tropical; HUDSON SILVA, University of New Hampshire / Fundação Floresta Tropical; PATRICK CRILL, University of New Hampshire / Stockholm University; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; GREGORY P. ASNER, Stanford University. |
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Título: |
Soil-atmosphere exchange of nitrous oxide, nitric oxide, methane, and carbon dioxide in logged and undisturbed forest in the Tapajos National Forest, Brazil. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Earth Interactions, v. 9, n. 23, p. 1-28, Nov. 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
Selective logging is an extensive land use in the Brazilian Amazon region. The soil?atmosphere fluxes of nitrous oxide (N2O), nitric oxide (NO), methane (CH4), and carbon dioxide (CO2) are studied on two soil types (clay Oxisol and sandy loam Ultisol) over two years (2000?01) in both undisturbed forest and forest recently logged using reduced impact forest management in the Tapajos National Forest, near Santarem, Para, Brazil. In undisturbed forest, annual soil?atmosphere fluxes of N2O (mean ± standard error) were 7.9 ± 0.7 and 7.0 ± 0.6 ng N cm?2 h?1 for the Oxisol and 1.7 ± 0.1 and 1.6 ± 0.3 ng N cm?2 h?1 for the Ultisol for 2000 and 2001, respectively. The annual fluxes of NO from undisturbed forest soil in 2001 were 9.0 ± 2.8 ng N cm?2 h?1 for the Oxisol and 8.8 ± 5.0 ng N cm?2 h?1 for the Ultisol. Consumption of CH4 from the atmosphere dominated over production on undisturbed forest soils. Fluxes averaged ?0.3 ± 0.2 and ?0.1 ± 0.9 mg CH4 m?2 day?1 on the Oxisol and ?1.0 ± 0.2 and ?0.9 ± 0.3 mg CH4 m?2 day?1 on the Ultisol for years 2000 and 2001. For CO2 in 2001, the annual fluxes averaged 3.6 ± 0.4 ?mol m?2 s?1 on the Oxisol and 4.9 ± 1.1 ?mol m?2 s?1 on the Ultisol. We measured fluxes over one year each from two recently logged forests on the Oxisol in 2000 and on the Ultisol in 2001. Sampling in logged areas was stratified from greatest to least ground disturbance covering log decks, skid trails, tree-fall gaps, and forest matrix. Areas of strong soil compaction, especially the skid trails and logging decks, were prone to significantly greater emissions of N2O, NO, and especially CH4. In the case of CH4, estimated annual emissions from decks reached extremely high rates of 531 ± 419 and 98 ± 41 mg CH4 m?2 day?1, for Oxisol and Ultisol sites, respectively, comparable to wetland emissions in the region. We calculated excess fluxes from logged areas by subtraction of a background forest matrix or undisturbed forest flux and adjusted these fluxes for the proportional area of ground disturbance. Our calculations suggest that selective logging increases emissions of N2O and NO from 30% to 350% depending upon conditions. While undisturbed forest was a CH4 sink, logged forest tended to emit methane at moderate rates. Soil?atmosphere CO2 fluxes were only slightly affected by logging. The regional effects of logging cannot be simply extrapolated based upon one site. We studied sites where reduced impact harvest management was used while in typical conventional logging ground damage is twice as great. Even so, our results indicate that for N2O, NO, and CH4, logging disturbance may be as important for regional budgets of these gases as other extensive land-use changes in the Amazon such as the conversion of forest to cattle pasture. MenosSelective logging is an extensive land use in the Brazilian Amazon region. The soil?atmosphere fluxes of nitrous oxide (N2O), nitric oxide (NO), methane (CH4), and carbon dioxide (CO2) are studied on two soil types (clay Oxisol and sandy loam Ultisol) over two years (2000?01) in both undisturbed forest and forest recently logged using reduced impact forest management in the Tapajos National Forest, near Santarem, Para, Brazil. In undisturbed forest, annual soil?atmosphere fluxes of N2O (mean ± standard error) were 7.9 ± 0.7 and 7.0 ± 0.6 ng N cm?2 h?1 for the Oxisol and 1.7 ± 0.1 and 1.6 ± 0.3 ng N cm?2 h?1 for the Ultisol for 2000 and 2001, respectively. The annual fluxes of NO from undisturbed forest soil in 2001 were 9.0 ± 2.8 ng N cm?2 h?1 for the Oxisol and 8.8 ± 5.0 ng N cm?2 h?1 for the Ultisol. Consumption of CH4 from the atmosphere dominated over production on undisturbed forest soils. Fluxes averaged ?0.3 ± 0.2 and ?0.1 ± 0.9 mg CH4 m?2 day?1 on the Oxisol and ?1.0 ± 0.2 and ?0.9 ± 0.3 mg CH4 m?2 day?1 on the Ultisol for years 2000 and 2001. For CO2 in 2001, the annual fluxes averaged 3.6 ± 0.4 ?mol m?2 s?1 on the Oxisol and 4.9 ± 1.1 ?mol m?2 s?1 on the Ultisol. We measured fluxes over one year each from two recently logged forests on the Oxisol in 2000 and on the Ultisol in 2001. Sampling in logged areas was stratified from greatest to least ground disturbance covering log decks, skid trails, tree-fall gaps, and forest matrix. Areas of strong soil compaction, esp... Mostrar Tudo |
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Palavras-Chave: |
Trace gas. |
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Thesagro: |
Floresta Tropical. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/103525/1/ei1252E1.pdf
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Marc: |
LEADER 03484naa a2200217 a 4500
001 1578048
005 2022-06-08
008 2005 bl uuuu u00u1 u #d
100 1 $aKELLER, M.
245 $aSoil-atmosphere exchange of nitrous oxide, nitric oxide, methane, and carbon dioxide in logged and undisturbed forest in the Tapajos National Forest, Brazil.$h[electronic resource]
260 $c2005
520 $aSelective logging is an extensive land use in the Brazilian Amazon region. The soil?atmosphere fluxes of nitrous oxide (N2O), nitric oxide (NO), methane (CH4), and carbon dioxide (CO2) are studied on two soil types (clay Oxisol and sandy loam Ultisol) over two years (2000?01) in both undisturbed forest and forest recently logged using reduced impact forest management in the Tapajos National Forest, near Santarem, Para, Brazil. In undisturbed forest, annual soil?atmosphere fluxes of N2O (mean ± standard error) were 7.9 ± 0.7 and 7.0 ± 0.6 ng N cm?2 h?1 for the Oxisol and 1.7 ± 0.1 and 1.6 ± 0.3 ng N cm?2 h?1 for the Ultisol for 2000 and 2001, respectively. The annual fluxes of NO from undisturbed forest soil in 2001 were 9.0 ± 2.8 ng N cm?2 h?1 for the Oxisol and 8.8 ± 5.0 ng N cm?2 h?1 for the Ultisol. Consumption of CH4 from the atmosphere dominated over production on undisturbed forest soils. Fluxes averaged ?0.3 ± 0.2 and ?0.1 ± 0.9 mg CH4 m?2 day?1 on the Oxisol and ?1.0 ± 0.2 and ?0.9 ± 0.3 mg CH4 m?2 day?1 on the Ultisol for years 2000 and 2001. For CO2 in 2001, the annual fluxes averaged 3.6 ± 0.4 ?mol m?2 s?1 on the Oxisol and 4.9 ± 1.1 ?mol m?2 s?1 on the Ultisol. We measured fluxes over one year each from two recently logged forests on the Oxisol in 2000 and on the Ultisol in 2001. Sampling in logged areas was stratified from greatest to least ground disturbance covering log decks, skid trails, tree-fall gaps, and forest matrix. Areas of strong soil compaction, especially the skid trails and logging decks, were prone to significantly greater emissions of N2O, NO, and especially CH4. In the case of CH4, estimated annual emissions from decks reached extremely high rates of 531 ± 419 and 98 ± 41 mg CH4 m?2 day?1, for Oxisol and Ultisol sites, respectively, comparable to wetland emissions in the region. We calculated excess fluxes from logged areas by subtraction of a background forest matrix or undisturbed forest flux and adjusted these fluxes for the proportional area of ground disturbance. Our calculations suggest that selective logging increases emissions of N2O and NO from 30% to 350% depending upon conditions. While undisturbed forest was a CH4 sink, logged forest tended to emit methane at moderate rates. Soil?atmosphere CO2 fluxes were only slightly affected by logging. The regional effects of logging cannot be simply extrapolated based upon one site. We studied sites where reduced impact harvest management was used while in typical conventional logging ground damage is twice as great. Even so, our results indicate that for N2O, NO, and CH4, logging disturbance may be as important for regional budgets of these gases as other extensive land-use changes in the Amazon such as the conversion of forest to cattle pasture.
650 $aFloresta Tropical
653 $aTrace gas
700 1 $aVARNER, R.
700 1 $aDIAS, J. D.
700 1 $aSILVA, H.
700 1 $aCRILL, P.
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aASNER, G. P.
773 $tEarth Interactions$gv. 9, n. 23, p. 1-28, Nov. 2005.
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Embrapa Amazônia Oriental (CPATU) |
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