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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
24/08/2016 |
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Data da última atualização: |
14/09/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MARQUES, J. D. de O.; LUIZÃO, F. J.; TEIXEIRA, W. G.; VITEL, C. M.; MARQUES, E. M. de A. |
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Afiliação: |
JEAN DALMO DE OLIVEIRA MARQUES, IFAM; FLÁVIO JESUS LUIZÃO, INPA; WENCESLAU GERALDES TEIXEIRA, CNPS; CLAUDIA MARIE VITEL, INPA; ELIZALANE MOURA DE ARAÚJO MARQUES, IFAM. |
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Título: |
Soil organic carbon, carbon stock and their relationships to physical attributes under forest soils in Central Amazonia. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Revista Árvore, Viçosa, MG, v. 40, n. 2, p. 197-208, mar./abr. 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
The soil carbon under Amazonian forests has an important roles in global changing, making information on the soil content and depths of these stocks are considerable interest in efforts to quantify soil carbon emissions to the atmosphere.This study quantified the content and soil organic carbon stock under primary forest up to 2 m depth, at different topographic positions, at Cuieiras Biological Reserve, Manaus/ ZF2, km 34, in the Central Amazon, evaluating the soil attributes that may influence the permanence of soil carbon. Soil samples were collected along a transect of 850 m on topographic gradient Oxisol (plateau), Ultisol (slope) and Spodosol (valley). The stocks of soil carbon were obtained by multiplying the carbon content, soil bulk density and trickiness of soil layers. The watershed was delimited by using STRM and IKONOS images and the carbon contend obtained in the transects was extrapolated as a way to evaluate the potential for carbon stocks in an area of 2678.68 ha. The total SOC was greater in Oxisol followed by Spodosol and Ultisol. It was found direct correlations between the SOC and soil physical attributes. Among the clay soils (Oxisol and Ultisol), the largest stocks of carbon were observed in Oxisol at both the transect (90 to 175.5 Mg C ha-1) as the level of watershed (100.2 to 195.2 Mg C ha-1). The carbon stocks under sandy soil (Spodosol) was greater to clay soils along the transect (160-241 Mg C ha-1) and near them in the Watershed (96.90 to 146.01 Mg C ha-1). MenosThe soil carbon under Amazonian forests has an important roles in global changing, making information on the soil content and depths of these stocks are considerable interest in efforts to quantify soil carbon emissions to the atmosphere.This study quantified the content and soil organic carbon stock under primary forest up to 2 m depth, at different topographic positions, at Cuieiras Biological Reserve, Manaus/ ZF2, km 34, in the Central Amazon, evaluating the soil attributes that may influence the permanence of soil carbon. Soil samples were collected along a transect of 850 m on topographic gradient Oxisol (plateau), Ultisol (slope) and Spodosol (valley). The stocks of soil carbon were obtained by multiplying the carbon content, soil bulk density and trickiness of soil layers. The watershed was delimited by using STRM and IKONOS images and the carbon contend obtained in the transects was extrapolated as a way to evaluate the potential for carbon stocks in an area of 2678.68 ha. The total SOC was greater in Oxisol followed by Spodosol and Ultisol. It was found direct correlations between the SOC and soil physical attributes. Among the clay soils (Oxisol and Ultisol), the largest stocks of carbon were observed in Oxisol at both the transect (90 to 175.5 Mg C ha-1) as the level of watershed (100.2 to 195.2 Mg C ha-1). The carbon stocks under sandy soil (Spodosol) was greater to clay soils along the transect (160-241 Mg C ha-1) and near them in the Watershed (96.90 to 146.01 ... Mostrar Tudo |
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Palavras-Chave: |
Floresta amazônica; Propriedades físicas do solo. |
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Thesagro: |
Carbono. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/146691/1/2016-023.pdf
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Marc: |
LEADER 02189naa a2200205 a 4500
001 2051599
005 2020-09-14
008 2016 bl uuuu u00u1 u #d
100 1 $aMARQUES, J. D. de O.
245 $aSoil organic carbon, carbon stock and their relationships to physical attributes under forest soils in Central Amazonia.$h[electronic resource]
260 $c2016
520 $aThe soil carbon under Amazonian forests has an important roles in global changing, making information on the soil content and depths of these stocks are considerable interest in efforts to quantify soil carbon emissions to the atmosphere.This study quantified the content and soil organic carbon stock under primary forest up to 2 m depth, at different topographic positions, at Cuieiras Biological Reserve, Manaus/ ZF2, km 34, in the Central Amazon, evaluating the soil attributes that may influence the permanence of soil carbon. Soil samples were collected along a transect of 850 m on topographic gradient Oxisol (plateau), Ultisol (slope) and Spodosol (valley). The stocks of soil carbon were obtained by multiplying the carbon content, soil bulk density and trickiness of soil layers. The watershed was delimited by using STRM and IKONOS images and the carbon contend obtained in the transects was extrapolated as a way to evaluate the potential for carbon stocks in an area of 2678.68 ha. The total SOC was greater in Oxisol followed by Spodosol and Ultisol. It was found direct correlations between the SOC and soil physical attributes. Among the clay soils (Oxisol and Ultisol), the largest stocks of carbon were observed in Oxisol at both the transect (90 to 175.5 Mg C ha-1) as the level of watershed (100.2 to 195.2 Mg C ha-1). The carbon stocks under sandy soil (Spodosol) was greater to clay soils along the transect (160-241 Mg C ha-1) and near them in the Watershed (96.90 to 146.01 Mg C ha-1).
650 $aCarbono
653 $aFloresta amazônica
653 $aPropriedades físicas do solo
700 1 $aLUIZÃO, F. J.
700 1 $aTEIXEIRA, W. G.
700 1 $aVITEL, C. M.
700 1 $aMARQUES, E. M. de A.
773 $tRevista Árvore, Viçosa, MG$gv. 40, n. 2, p. 197-208, mar./abr. 2016.
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Embrapa Solos (CNPS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
11/05/2017 |
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Data da última atualização: |
11/05/2017 |
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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: |
FRANCO, S. M.; TAVERNARI, F. de C.; MAIA, R. C.; BARROS, V. R. S. M.; ALBINO, L. F. T.; ROSTAGNO, H. S.; LELIS, G. R.; CALDERANO, A. A.; DILGER, R. N. |
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Afiliação: |
SEBASTIAN M., Premex S.A.; FERNANDO DE CASTRO TAVERNARI, CNPSA; ROSANA CARDOSO MAIA, UFV; VICTOR R. S. M. BARROS, UFV; LUIZ FERNANDO TEIXEIRA ALBINO, UFV; HORÁCIO SANTIAGO ROSTAGNO, UFV; GUILHERME RODRIGUES LELIS, UFV; ARELE ARLINDO CALDERANO, UFV; RYAN NEIL DILGER, University of Illinois. |
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Título: |
Estimation of optimal ratios of digestible phenylalanine + tyrosine, histidine, and leucine to digestible lysine for performance and breast yield in broilers. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Poultry Science, v. 96, p. 829-837, 2017. |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT Three experiments were carried out to estimate the optimal ratios of digestible phenylalanine + tyrosine (Phe + Tyr), histidine (His), and leucine (Leu) relative to digestible lysine (Lys) for performance and carcass criteria of Cobb-500 broilers from 8 to 17 d of age. In each experiment, 160 male chicks were allocated to a completely randomized experimental design with eight replicate pens, each receiving five dietary treatments. A common, semi-purified basal diet was formulated to meet all dietary recommendations except for those of the tested amino acids (i.e., Phe + Tyr, His, and Leu). Growth performance and carcass characteristics data were analyzed using various requirement-estimation models, including 95% of the quadratic regression, linear response plateau (LRP; i.e., stepwise regression), LRP-to-quadratic regression ratio; and quadratic broken line (QBL). Graded digestible Phe + Tyr ratios elicited a quadratic response (P < 0.05) in body weight gain and linear responses (P < 0.05) in breast and breast fillet weights. Linear effects (P < 0.05) were also observed when graded ratios of digestible His were fed for feed intake and weight gain, and quadratic responses (P < 0.05) were noted for feed conversion ratio and breast and breast fillet weights and yields. Graded Leu ratios elicited quadratic responses (P < 0.05) in feed intake, weight gain, and breast and breast fillet weight and yield. Based on growth and carcass parameters, the estimated ideal digestible ratios of Phe + Tyr, His, and Leu relative to digestible Lys were 112, 38, and 104%, respectively, for broiler chicks raised from 8 to 17 d of age. MenosABSTRACT Three experiments were carried out to estimate the optimal ratios of digestible phenylalanine + tyrosine (Phe + Tyr), histidine (His), and leucine (Leu) relative to digestible lysine (Lys) for performance and carcass criteria of Cobb-500 broilers from 8 to 17 d of age. In each experiment, 160 male chicks were allocated to a completely randomized experimental design with eight replicate pens, each receiving five dietary treatments. A common, semi-purified basal diet was formulated to meet all dietary recommendations except for those of the tested amino acids (i.e., Phe + Tyr, His, and Leu). Growth performance and carcass characteristics data were analyzed using various requirement-estimation models, including 95% of the quadratic regression, linear response plateau (LRP; i.e., stepwise regression), LRP-to-quadratic regression ratio; and quadratic broken line (QBL). Graded digestible Phe + Tyr ratios elicited a quadratic response (P < 0.05) in body weight gain and linear responses (P < 0.05) in breast and breast fillet weights. Linear effects (P < 0.05) were also observed when graded ratios of digestible His were fed for feed intake and weight gain, and quadratic responses (P < 0.05) were noted for feed conversion ratio and breast and breast fillet weights and yields. Graded Leu ratios elicited quadratic responses (P < 0.05) in feed intake, weight gain, and breast and breast fillet weight and yield. Based on growth and carcass parameters, the estimated ideal digestibl... Mostrar Tudo |
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Palavras-Chave: |
Digestible amino acid; Peito de frango. |
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Thesagro: |
Aminoácido; Digestibilidade; Enzima; Frango de corte; Nutrição animal; Sistema de produção. |
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Thesaurus NAL: |
Animal nutrition; Breast meat; Broiler chickens; Digestibility; Histidine; Leucine; phenylalanine; Poultry production; tyrosine. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02882naa a2200421 a 4500
001 2069526
005 2017-05-11
008 2017 bl uuuu u00u1 u #d
100 1 $aFRANCO, S. M.
245 $aEstimation of optimal ratios of digestible phenylalanine + tyrosine, histidine, and leucine to digestible lysine for performance and breast yield in broilers.$h[electronic resource]
260 $c2017
520 $aABSTRACT Three experiments were carried out to estimate the optimal ratios of digestible phenylalanine + tyrosine (Phe + Tyr), histidine (His), and leucine (Leu) relative to digestible lysine (Lys) for performance and carcass criteria of Cobb-500 broilers from 8 to 17 d of age. In each experiment, 160 male chicks were allocated to a completely randomized experimental design with eight replicate pens, each receiving five dietary treatments. A common, semi-purified basal diet was formulated to meet all dietary recommendations except for those of the tested amino acids (i.e., Phe + Tyr, His, and Leu). Growth performance and carcass characteristics data were analyzed using various requirement-estimation models, including 95% of the quadratic regression, linear response plateau (LRP; i.e., stepwise regression), LRP-to-quadratic regression ratio; and quadratic broken line (QBL). Graded digestible Phe + Tyr ratios elicited a quadratic response (P < 0.05) in body weight gain and linear responses (P < 0.05) in breast and breast fillet weights. Linear effects (P < 0.05) were also observed when graded ratios of digestible His were fed for feed intake and weight gain, and quadratic responses (P < 0.05) were noted for feed conversion ratio and breast and breast fillet weights and yields. Graded Leu ratios elicited quadratic responses (P < 0.05) in feed intake, weight gain, and breast and breast fillet weight and yield. Based on growth and carcass parameters, the estimated ideal digestible ratios of Phe + Tyr, His, and Leu relative to digestible Lys were 112, 38, and 104%, respectively, for broiler chicks raised from 8 to 17 d of age.
650 $aAnimal nutrition
650 $aBreast meat
650 $aBroiler chickens
650 $aDigestibility
650 $aHistidine
650 $aLeucine
650 $aphenylalanine
650 $aPoultry production
650 $atyrosine
650 $aAminoácido
650 $aDigestibilidade
650 $aEnzima
650 $aFrango de corte
650 $aNutrição animal
650 $aSistema de produção
653 $aDigestible amino acid
653 $aPeito de frango
700 1 $aTAVERNARI, F. de C.
700 1 $aMAIA, R. C.
700 1 $aBARROS, V. R. S. M.
700 1 $aALBINO, L. F. T.
700 1 $aROSTAGNO, H. S.
700 1 $aLELIS, G. R.
700 1 $aCALDERANO, A. A.
700 1 $aDILGER, R. N.
773 $tPoultry Science$gv. 96, p. 829-837, 2017.
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