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Registro Completo |
Biblioteca(s): |
Embrapa Florestas; Embrapa Rondônia. |
Data corrente: |
05/04/2005 |
Data da última atualização: |
05/04/2005 |
Autoria: |
BARBOSA, R. I.; FERREIRA, C. A. C. |
Título: |
Biomassa acima do solo de um ecossistema de "campina" em Roraima, norte da Amazônia Brasileira. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
Acta Amazonica, Manaus, v. 34, n. 4, p. 577-586, out./dez. 2004. |
Idioma: |
Português |
Palavras-Chave: |
Campina; fitomassa; Roraima. |
Thesagro: |
Biomassa. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00502naa a2200169 a 4500 001 1310444 005 2005-04-05 008 2004 bl uuuu u00u1 u #d 100 1 $aBARBOSA, R. I. 245 $aBiomassa acima do solo de um ecossistema de "campina" em Roraima, norte da Amazônia Brasileira. 260 $c2004 650 $aBiomassa 653 $aCampina 653 $afitomassa 653 $aRoraima 700 1 $aFERREIRA, C. A. C. 773 $tActa Amazonica, Manaus$gv. 34, n. 4, p. 577-586, out./dez. 2004.
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Registro original: |
Embrapa Florestas (CNPF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
04/06/2020 |
Data da última atualização: |
05/06/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
CRUZ, C. C. T. da; PEREIRA, E. I.; SATO, P. S.; GUIMARÃES, G. G. F.; SOUZA, G. B. de; BERNARDI, A. C. de C.; RIBEIRO, C. |
Afiliação: |
Camila Conceição Tomé da Cruz, UFSCar; Elaine Inácio Pereira, UFSCar; Patrícia Suemi Sato, UFSCar; Gelton Geraldo Fernandes Guimarães, Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina; GILBERTO BATISTA DE SOUZA, CPPSE; ALBERTO CARLOS DE CAMPOS BERNARDI, CPPSE; CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
Título: |
Analysis of NH3-N slow release systems for fiber digestibility of low-quality forage: in vitro approach. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Scientia Agricola, v.77, n.5, e20180383, 2020. |
ISSN: |
1678-992X |
DOI: |
http://dx.doi.org/10.1590/1678-992x-2018-0383 |
Idioma: |
Inglês |
Conteúdo: |
Urea is a common non-protein supplement used in ruminant feed; however, excessive consumption may lead to poisoning by NH3. Although the slow release of urea into the rumen has shown to be an essential aspect for ruminant feed, to date only a few studies have addressed this matter. In this study we examined the influence of five different NH3-N slow release systems based on clay-urea nanocomposites on the fiber digestibility of low-quality forage (sugarcane straw) in vitro. Physical properties of nanocomposites were evaluated and their effects on digestibility were tested in vitro using pristine urea as a positive control (level of 1 % of DM of sugarcane straw sample) and sugarcane (with no additives) as a negative control. Ammonia release and digestibility were evaluated at 12, 24, 36, 48, 72 and 96-h. Generally, all nanocomposites increased (p < 0.05) digestibility of fiber over control under all the conditions stipulated, but the samples with hydrogel content were more expressive. We concluded that an ideal release rate and optimum environment for microbial synthesis are necessary to maximize the digestion of sugarcane. |
Palavras-Chave: |
Non protein nitrogen; Ruminants feed; Slow release urea. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 01932naa a2200253 a 4500 001 2123051 005 2020-06-05 008 2020 bl uuuu u00u1 u #d 022 $a1678-992X 024 7 $ahttp://dx.doi.org/10.1590/1678-992x-2018-0383$2DOI 100 1 $aCRUZ, C. C. T. da 245 $aAnalysis of NH3-N slow release systems for fiber digestibility of low-quality forage$bin vitro approach.$h[electronic resource] 260 $c2020 520 $aUrea is a common non-protein supplement used in ruminant feed; however, excessive consumption may lead to poisoning by NH3. Although the slow release of urea into the rumen has shown to be an essential aspect for ruminant feed, to date only a few studies have addressed this matter. In this study we examined the influence of five different NH3-N slow release systems based on clay-urea nanocomposites on the fiber digestibility of low-quality forage (sugarcane straw) in vitro. Physical properties of nanocomposites were evaluated and their effects on digestibility were tested in vitro using pristine urea as a positive control (level of 1 % of DM of sugarcane straw sample) and sugarcane (with no additives) as a negative control. Ammonia release and digestibility were evaluated at 12, 24, 36, 48, 72 and 96-h. Generally, all nanocomposites increased (p < 0.05) digestibility of fiber over control under all the conditions stipulated, but the samples with hydrogel content were more expressive. We concluded that an ideal release rate and optimum environment for microbial synthesis are necessary to maximize the digestion of sugarcane. 653 $aNon protein nitrogen 653 $aRuminants feed 653 $aSlow release urea 700 1 $aPEREIRA, E. I. 700 1 $aSATO, P. S. 700 1 $aGUIMARÃES, G. G. F. 700 1 $aSOUZA, G. B. de 700 1 $aBERNARDI, A. C. de C. 700 1 $aRIBEIRO, C. 773 $tScientia Agricola$gv.77, n.5, e20180383, 2020.
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