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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
21/02/2005 |
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Data da última atualização: |
15/09/2009 |
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Autoria: |
ALVAREZ V. V. H.; MELLO, J. W. V. de; DIAS, L. E. |
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Título: |
Acidez do solo. |
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Ano de publicação: |
0 |
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Fonte/Imprenta: |
Brasília: ABEAS, s.d. |
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Páginas: |
61 p. |
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Série: |
(ABEAS. Curso de Fertilidade e Manejo de Solos. Módulo 4: Acidez do Solo). |
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Idioma: |
Português |
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Conteúdo: |
Natureza química da reação do solo. Conceito ácido-base. Fontes de acidez no solo. Grupos ácidos dos minerais de argila. Grupos ácidos da matéria orgânica. Ácidos solúveis. Fontes de alcalinidade no solo. Capacidade tampão do pH do solo. Causas da acidificação progressiva dos solos. Medição da reação do solo. Métodos potenciométricos. Valores físicos-químicos de pH - 0,5 pCa e pH - 0,33 pAl. Outras determinações analíticas relacionadas com a reação do solo. Problemas causados pela acidez do solo. Efeitos diretos e indiretos do pH. Alumínio em solos ácidos. Saturação de alumínio e crescimento de plantas. Calagem. Determinação da necessidade decalagem dos solos. Método das curvas de incubação com CaCO3. Método de neutralização do Al tocável. Método da solução tampão SMP (SCHOMAKER, McLEAN e PRATT). Método do pH e do teor de matéria orgânica do solo. Método da saturação de bases. Método do Al e Ca e Mg trocáveis. Escolha do método para estimar a necessidade de calagem. Quantidade de calcário a ser usada. Escolha o corretivo a aplicar. Época e modo de aplicação do calcário. Supercalagem. Uso de gesso agrícola. Gesso agrícola como fonte de Ca e S para as culturas. Correção de camadas subsuperficiais visando a melhoria do ambiente radicular. Evitar a formação de camadas adensadas em solos muito intemperizados. Correção de solos sódicos. |
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Palavras-Chave: |
Soil acidity. |
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Thesagro: |
Acidez do Solo; Fertilidade do Solo; Manejo do Solo. |
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Thesaurus Nal: |
soil fertility; soil management; soil pH. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02057nam a2200241 a 4500
001 1627662
005 2009-09-15
008 bl uuuu 00u1 u #d
100 1 $aALVAREZ V. V. H.
245 $aAcidez do solo.
260 $aBrasília: ABEAS, s.d.$c0
300 $a61 p.
490 $a(ABEAS. Curso de Fertilidade e Manejo de Solos. Módulo 4: Acidez do Solo).
520 $aNatureza química da reação do solo. Conceito ácido-base. Fontes de acidez no solo. Grupos ácidos dos minerais de argila. Grupos ácidos da matéria orgânica. Ácidos solúveis. Fontes de alcalinidade no solo. Capacidade tampão do pH do solo. Causas da acidificação progressiva dos solos. Medição da reação do solo. Métodos potenciométricos. Valores físicos-químicos de pH - 0,5 pCa e pH - 0,33 pAl. Outras determinações analíticas relacionadas com a reação do solo. Problemas causados pela acidez do solo. Efeitos diretos e indiretos do pH. Alumínio em solos ácidos. Saturação de alumínio e crescimento de plantas. Calagem. Determinação da necessidade decalagem dos solos. Método das curvas de incubação com CaCO3. Método de neutralização do Al tocável. Método da solução tampão SMP (SCHOMAKER, McLEAN e PRATT). Método do pH e do teor de matéria orgânica do solo. Método da saturação de bases. Método do Al e Ca e Mg trocáveis. Escolha do método para estimar a necessidade de calagem. Quantidade de calcário a ser usada. Escolha o corretivo a aplicar. Época e modo de aplicação do calcário. Supercalagem. Uso de gesso agrícola. Gesso agrícola como fonte de Ca e S para as culturas. Correção de camadas subsuperficiais visando a melhoria do ambiente radicular. Evitar a formação de camadas adensadas em solos muito intemperizados. Correção de solos sódicos.
650 $asoil fertility
650 $asoil management
650 $asoil pH
650 $aAcidez do Solo
650 $aFertilidade do Solo
650 $aManejo do Solo
653 $aSoil acidity
700 1 $aMELLO, J. W. V. de
700 1 $aDIAS, L. E.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
10/12/2019 |
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Data da última atualização: |
10/12/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
COSTA, H.; SALIBA, E.; GALVANI, D. B.; BOMFIM, M. A. D.; LANA, A. M.; BORGES, A. L.; LANDIM, A.; FACIOLA, A. |
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Afiliação: |
HÉLIO COSTA, Universidade Federal de Minas Gerais (UFMG) - Belo Horizonte, MG, Brazil; ELOISA SALIBRA, Universidade Federal de Minas Gerais (UFMG) - Belo Horizonte, MG, Brazil; DIEGO BARCELOS GALVANI, CNPC; MARCO AURELIO DELMONDES BOMFIM, CNPC; ÂNGELA MARIA LANA, Universidade Federal de Minas Gerais (UFMG) - Belo Horizonte, MG, Brazil; ANA LUIZA BORGES, Universidade Federal de Minas Gerais (UFMG) - Belo Horizonte, MG, Brazil; ALINE LANDIM, Vale do Acaraú State University (UVA) - Sobral, CE, Brazil; ANTONIO FACIOLA, Department of Animal Sciences, University of Florida, Gainesville. |
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Título: |
Effects of zinc sulfate or propylene glycol on intake, digestibility, and forage selection by grazing sheep in a semi-arid region during the rainy season. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Animals, v. 9, n. 11, E867, 2019. |
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DOI: |
10.3390/ani9110867 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The objective of this study was to determine intake, nutrient availability, and animal selection of major forage species in sheep supplemented with zinc sulfate or propylene glycol in Caatinga-native pastures during the rainy season. Twenty-four mixed Santa Inês sheep, all non-castrated males, with initial weight of 19.3 ± 2.52 kg and 4 ± 0.35 months of age, were distributed in a complete randomized design into three treatments: Control (CT)-concentrate supplemented at 0.7% of body weight; CT + 300 mg of Zn day-1; CT + 2.5 mL of propylene glycol/kg LW0.75·day-1. Measurements were done in four periods during the rainy season, with 28 days of interval between each measurement. Differences were observed in the composition of the ruminal extrusa samples from pastures for crude protein (CP) (192 to 131 g kg-1), in vitro dry matter digestibility (IVDMD) (537 to 441 g kg-1), and in vitro organic matter digestibility (IVOMD) (468 to 359 g kg-1) in March and June, respectively. There was no effect for treatments, neither for the treatment x period interaction on organic matter (OM), CP, and fibrous fraction intake (p > 0.05). Organic matter intake (OMI) was, on average 23.9% greater in March compared to June. CP intake decreased monthly (p < 0.05). Fibrous fraction intake was greater in March (p < 0.05), with reductions of 34.8, 33.3, and 39.4% in June, respectively, for neutral detergent fiber (NDF), acid detergent fiber (ADF), and cellulose (CEL) fractions. There was no effect of treatments (p > 0.05) on selection of vegetal species present in the pasture. On the other hand, the proportion between ingested species changed over the experimental period. Greater intakes were found in April compared to May, except for Zizyphus joazeiro intake, which was greater in March (p < 0.05). In conclusion, based on the finding of this study, Zn and propylene glycol (PG) supplementation did not improve sheep nutrient intake when grazing Caatinga-native pasture in the rainy season. Caatinga-native pasture biomass has adequate protein and digestible organic matter levels during early rainy season. Over this period, however, the advanced maturity of the plants and the reduced availability of pasture may result in variations of intake by the animals. In the months of April to June, a reduced energy supply is caused by reduced nutritive values of pastures, which contributes to inefficient protein utilization and reduced feed intake. MenosAbstract: The objective of this study was to determine intake, nutrient availability, and animal selection of major forage species in sheep supplemented with zinc sulfate or propylene glycol in Caatinga-native pastures during the rainy season. Twenty-four mixed Santa Inês sheep, all non-castrated males, with initial weight of 19.3 ± 2.52 kg and 4 ± 0.35 months of age, were distributed in a complete randomized design into three treatments: Control (CT)-concentrate supplemented at 0.7% of body weight; CT + 300 mg of Zn day-1; CT + 2.5 mL of propylene glycol/kg LW0.75·day-1. Measurements were done in four periods during the rainy season, with 28 days of interval between each measurement. Differences were observed in the composition of the ruminal extrusa samples from pastures for crude protein (CP) (192 to 131 g kg-1), in vitro dry matter digestibility (IVDMD) (537 to 441 g kg-1), and in vitro organic matter digestibility (IVOMD) (468 to 359 g kg-1) in March and June, respectively. There was no effect for treatments, neither for the treatment x period interaction on organic matter (OM), CP, and fibrous fraction intake (p > 0.05). Organic matter intake (OMI) was, on average 23.9% greater in March compared to June. CP intake decreased monthly (p < 0.05). Fibrous fraction intake was greater in March (p < 0.05), with reductions of 34.8, 33.3, and 39.4% in June, respectively, for neutral detergent fiber (NDF), acid detergent fiber (ADF), and cellulose (CEL) fractions. There was no e... Mostrar Tudo |
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Palavras-Chave: |
Native pasture; Raça Santa Inês; Ruminal extrusa sample; Selectivity; Supplementary feeding. |
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Thesagro: |
Caatinga. |
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Thesaurus NAL: |
Animal nutrition; Feed intake; Forage quality; Mixed grazing; Nutrient availability; Sheep feeding; Tannins. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03556naa a2200373 a 4500
001 2116516
005 2019-12-10
008 2019 bl uuuu u00u1 u #d
024 7 $a10.3390/ani9110867$2DOI
100 1 $aCOSTA, H.
245 $aEffects of zinc sulfate or propylene glycol on intake, digestibility, and forage selection by grazing sheep in a semi-arid region during the rainy season.$h[electronic resource]
260 $c2019
520 $aAbstract: The objective of this study was to determine intake, nutrient availability, and animal selection of major forage species in sheep supplemented with zinc sulfate or propylene glycol in Caatinga-native pastures during the rainy season. Twenty-four mixed Santa Inês sheep, all non-castrated males, with initial weight of 19.3 ± 2.52 kg and 4 ± 0.35 months of age, were distributed in a complete randomized design into three treatments: Control (CT)-concentrate supplemented at 0.7% of body weight; CT + 300 mg of Zn day-1; CT + 2.5 mL of propylene glycol/kg LW0.75·day-1. Measurements were done in four periods during the rainy season, with 28 days of interval between each measurement. Differences were observed in the composition of the ruminal extrusa samples from pastures for crude protein (CP) (192 to 131 g kg-1), in vitro dry matter digestibility (IVDMD) (537 to 441 g kg-1), and in vitro organic matter digestibility (IVOMD) (468 to 359 g kg-1) in March and June, respectively. There was no effect for treatments, neither for the treatment x period interaction on organic matter (OM), CP, and fibrous fraction intake (p > 0.05). Organic matter intake (OMI) was, on average 23.9% greater in March compared to June. CP intake decreased monthly (p < 0.05). Fibrous fraction intake was greater in March (p < 0.05), with reductions of 34.8, 33.3, and 39.4% in June, respectively, for neutral detergent fiber (NDF), acid detergent fiber (ADF), and cellulose (CEL) fractions. There was no effect of treatments (p > 0.05) on selection of vegetal species present in the pasture. On the other hand, the proportion between ingested species changed over the experimental period. Greater intakes were found in April compared to May, except for Zizyphus joazeiro intake, which was greater in March (p < 0.05). In conclusion, based on the finding of this study, Zn and propylene glycol (PG) supplementation did not improve sheep nutrient intake when grazing Caatinga-native pasture in the rainy season. Caatinga-native pasture biomass has adequate protein and digestible organic matter levels during early rainy season. Over this period, however, the advanced maturity of the plants and the reduced availability of pasture may result in variations of intake by the animals. In the months of April to June, a reduced energy supply is caused by reduced nutritive values of pastures, which contributes to inefficient protein utilization and reduced feed intake.
650 $aAnimal nutrition
650 $aFeed intake
650 $aForage quality
650 $aMixed grazing
650 $aNutrient availability
650 $aSheep feeding
650 $aTannins
650 $aCaatinga
653 $aNative pasture
653 $aRaça Santa Inês
653 $aRuminal extrusa sample
653 $aSelectivity
653 $aSupplementary feeding
700 1 $aSALIBA, E.
700 1 $aGALVANI, D. B.
700 1 $aBOMFIM, M. A. D.
700 1 $aLANA, A. M.
700 1 $aBORGES, A. L.
700 1 $aLANDIM, A.
700 1 $aFACIOLA, A.
773 $tAnimals$gv. 9, n. 11, E867, 2019.
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Embrapa Caprinos e Ovinos (CNPC) |
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