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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
29/07/2025 |
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Autoria: |
BROMFIELD, S. M.; JONES, O. L. |
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Título: |
The effect of sheep on the recycling of phosphorus in hayed-off pastures. |
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Ano de publicação: |
1970 |
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Fonte/Imprenta: |
Australian Journal Agricultural Research, v. 21, n. 5, p. 699-711, 1970. |
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DOI: |
https://doi.org/10.1071/AR9700699 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The mineralization of plant organic phosphorus during digestion by sheep was examined by comparing the intake of inorganic and organic phosphorus from a range of feeds with that excreted in the dung. Up to 80% of the organic phosphorus in spring feed was mineralized but net mineralization did not occur in hayed-off summer feeds. Under field and laboratory conditions inorganic phosphorus leached slowly from intact dung pellets. Laboratory studies showed that in general a larger proportion was leached from summer samples than from either spring or autumn samples. Light crushing increased the rate of leaching in the initial stages. The unleached inorganic phosphorus was completely soluble in dilute acid and slightly soluble in water. The recovery of inorganic phosphorus indicated that mineralization of organic phosphorus had not occurred to any extent within the dung during 6 months' decomposition and leaching. Most of the organic phosphorus resisted leaching and net mineralization but a little was extracted in the first leachate. This stable organic phosphorus was soluble in sodium hydroxide but not in dilute acid. The effects of grazing on the availability of inorganic phosphorus and the accumulation of organic phosphorus in pastures are discussed in the light of these results. |
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Palavras-Chave: |
Nutricao mineral. |
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Thesagro: |
Fósforo; Ovino. |
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Thesaurus Nal: |
Ruminant nutrition; Sheep. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01923naa a2200205 a 4500
001 1522929
005 2025-07-29
008 1970 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1071/AR9700699$2DOI
100 1 $aBROMFIELD, S. M.
245 $aThe effect of sheep on the recycling of phosphorus in hayed-off pastures.$h[electronic resource]
260 $c1970
520 $aAbstract: The mineralization of plant organic phosphorus during digestion by sheep was examined by comparing the intake of inorganic and organic phosphorus from a range of feeds with that excreted in the dung. Up to 80% of the organic phosphorus in spring feed was mineralized but net mineralization did not occur in hayed-off summer feeds. Under field and laboratory conditions inorganic phosphorus leached slowly from intact dung pellets. Laboratory studies showed that in general a larger proportion was leached from summer samples than from either spring or autumn samples. Light crushing increased the rate of leaching in the initial stages. The unleached inorganic phosphorus was completely soluble in dilute acid and slightly soluble in water. The recovery of inorganic phosphorus indicated that mineralization of organic phosphorus had not occurred to any extent within the dung during 6 months' decomposition and leaching. Most of the organic phosphorus resisted leaching and net mineralization but a little was extracted in the first leachate. This stable organic phosphorus was soluble in sodium hydroxide but not in dilute acid. The effects of grazing on the availability of inorganic phosphorus and the accumulation of organic phosphorus in pastures are discussed in the light of these results.
650 $aRuminant nutrition
650 $aSheep
650 $aFósforo
650 $aOvino
653 $aNutricao mineral
700 1 $aJONES, O. L.
773 $tAustralian Journal Agricultural Research$gv. 21, n. 5, p. 699-711, 1970.
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Embrapa Caprinos e Ovinos (CNPC) |
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| 1. |  | FREIRE, G. A. P.; VENTURA, D. J.; FOTOPOULOS, I. G.; ROSA, D. M.; AGUIAR, R. G.; ARAUJO, A. C. de. Dinâmica de serapilheira em uma área de floresta de terra firme, Amazônia Ocidental. Nativa, v. 8, n. 3, p. 323-328, 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
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| 3. | | COSTA, F. F.; OLIVEIRA JUNIOR, R. C. de; ALMEIDA, D. R. A. de; ROSA, D. M.; SILVA, K. E. da; TONINI, H.; BELDINI, T. P.; SANTOS, D. B. dos; GUEDES, M. C. Terrestrial LiDAR technology to evaluate the vertical structure of stands of Bertholletia excelsa Bonpl., a species symbol of conservation through sustainable use in the brazilian Amazon. Sustainability, v. 17, n. 13, article 6049, 2025.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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| 4. | | SMITH, M. N.; SCHITTI, J.; GONÇALVES, N.; MINOR, D.; ALMEIDA, D. R. A. de; ROCHA, D. G.; ARAGÓN, S.; MENIN, M.; GUEDES, M. C.; TONINI, H.; SILVA, K. E. da; ROSA, D. M.; NELSON, B. W.; CORDEIRO, C. L. O.; OLIVEIRA JUNIOR, R. C. de; SHAO, G.; SOUZA, M. S.; MCMAHON, S.; ALMEIDA, D.; ARAGÃO, L. E. O. C.; LIMA, N. Z. de; OLIVEIRA, G. de; ASSIS, R. L. de; CAMARGO, J. L.; MESQUITA, R. G.; SALESKA, S. R.; BRESHEARS, D. D.; COSTA, F. R. C.; STARK, S. C. Variations in Amazonian forest canopy structure and light environments across environmental and disturbance gradients. In: AGU FALL MEETING, 2019, San Francisco. Anais... San Francisco: AGU, 2019. Paper 499657.| Tipo: Resumo em Anais de Congresso |
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| 5. | | SMITH, M. N.; STARK, S. C.; TAYLOR, T. C.; SCHIETTI, J.; ALMEIDA, D. R. A. de; ARAGÓN, S.; TORRALVO, K.; LIMA, A. P.; OLIVEIRA, G. de; ASSIS, R. L. de; LEITOLD, V.; PONTES-LOPES, A.; SCOLES, R.; VIEIRA, L. C. de S.; RESENDE, A. F.; COPPOLA, A. I.; BRANDÃO, D. O.; SILVA JUNIOR, J. de A.; LOBATO, L. F.; FREITAS, W.; ALMEIDA, D.; SOUZA, M. S.; MINOR, D. M.; VILLEGAS, J. C.; LAW, D. J.; GONÇALVES, N.; ROCHA, D. G. da; GUEDES, M. C.; TONINI, H.; SILVA, K. E. da; HAREN, J. van; ROSA, D. M.; VALLE, D. F. do; CORDEIRO, C. L.; LIMA, N. Z. de; SHAO, G.; MENOR, I. O.; CONTI, G.; FLORENTINO, A. P.; MONTTI, L.; ARAGÃO, L. E. O. C.; McMAHON, S. M.; PARKER, G. G.; BRESHEARS, D. D.; COSTA, A. C. L. da; MAGNUSSON, W. E.; MESQUITA, R.; CAMARGO, J. L. C.; OLIVEIRA JUNIOR, R. C. de; CAMARGO, P. B. de; SALESKA, S. R.; NELSON, B. W. Diverse anthropogenic disturbances shift Amazon forests along a structural spectrum. Frontiers in Ecology an the Environment, v. 21, n. 1, p. 24-32, 2023.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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| Registros recuperados : 5 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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