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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
20/04/2015 |
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Data da última atualização: |
12/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RIBEIRO JÚNIOR, G. de O.; VELASCO, F. O.; FARIA JÚNIOR, W. G. de; TEIXEIRA, A. de M.; MACHADO, F. S.; MAGALHÃES, F. A.; JAYME, D. G.; GONÇALVES, L. C. |
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Afiliação: |
G. DE O. RIBEIRO JÚNIOR, UFMG; F. O. VELASCO, UFMG; W. G. DE FARIA JÚNIOR, UFRR; A. DE M. TEIXEIRA, UFU; FERNANDA SAMARINI MACHADO, CNPGL; F. A. MAGALHÃES, UFMG; D. G. JAYME, UFMG; L. C. GONÇALVES, UFMG. |
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Título: |
In situ degradation kinetic of Andropogon gayanus grass silages harvested at three stages of maturity. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, v. 66, n. 6, p. 1883-1890, 2014. |
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DOI: |
https://doi.org/10.1590/1678-6780 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT - Maturity is considered the primary factor affecting the nutritive value of forages. The aim of this study was to evaluate and compare dry matter (DM), crude protein (CP) and neutral detergent fiber (NDF) ruminal degradation kinetics of Andropogon gayanus grass silages harvested at three stages of maturity (56, 84 and 112 d). Dried and ground silage samples (5 mm) were incubated in nylon bags inside the rumen for 0, 6, 12, 24, 48, 72 and 96 h to estimate the kinetics of ruminal DM, CP and NDF degradation. The ruminal kinetic parameters of the silages from each treatment (56, 84 and 112 d of regrowth) in each animal (5 cows) were determined by the model: y = a + b(1 ? e?c(t?L)). The parameters generated by the model were analyzed as randomized block design, with grass regrowth age as the fixed effect and animal the as random effect (blocks). The grass silage ensiled with 56 days of regrowth had the highest (P<0.05) effective degradability of DM and NDF calculated for fractional rate of particulate passage of 2%/h. All silages had low CP soluble fraction (<25.4%) and effective degradability calculated for fractional rate of particulate passage of 2%/h (<40.1%). A greater (P<0.05) NDF lag time was observed for the silages ensiled with 84 and 112d compared to the silage produced with 56d of regrowth. The ruminal degradation kinetics of Andropogon gayanus grass silages showed that the grass ensiled with 56 days of regrowth had higher nutritional value. RESUMO - Maturity is considered the primary factor affecting the nutritive value of forages. The aim of this study was to evaluate and compare dry matter (DM), crude protein (CP) and neutral detergent fiber (NDF) ruminal degradation kinetics of Andropogon gayanus grass silages harvested at three stages of maturity (56, 84 and 112 d). Dried and ground silage samples (5 mm) were incubated in nylon bags inside the rumen for 0, 6, 12, 24, 48, 72 and 96 h to estimate the kinetics of ruminal DM, CP and NDF degradation. The ruminal kinetic parameters of the silages from each treatment (56, 84 and 112 d of regrowth) in each animal (5 cows) were determined by the model: y = a + b(1 ? e?c(t?L)). The parameters generated by the model were analyzed as randomized block design, with grass regrowth age as the fixed effect and animal the as random effect (blocks). The grass silage ensiled with 56 days of regrowth had the highest (P<0.05) effective degradability of DM and NDF calculated for fractional rate of particulate passage of 2%/h. All silages had low CP soluble fraction (<25.4%) and effective degradability calculated for fractional rate of particulate passage of 2%/h (<40.1%). A greater (P<0.05) NDF lag time was observed for the silages ensiled with 84 and 112d compared to the silage produced with 56d of regrowth. The ruminal degradation kinetics of Andropogon gayanus grass silages showed that the grass ensiled with 56 days of regrowth had higher nutritional value. MenosABSTRACT - Maturity is considered the primary factor affecting the nutritive value of forages. The aim of this study was to evaluate and compare dry matter (DM), crude protein (CP) and neutral detergent fiber (NDF) ruminal degradation kinetics of Andropogon gayanus grass silages harvested at three stages of maturity (56, 84 and 112 d). Dried and ground silage samples (5 mm) were incubated in nylon bags inside the rumen for 0, 6, 12, 24, 48, 72 and 96 h to estimate the kinetics of ruminal DM, CP and NDF degradation. The ruminal kinetic parameters of the silages from each treatment (56, 84 and 112 d of regrowth) in each animal (5 cows) were determined by the model: y = a + b(1 ? e?c(t?L)). The parameters generated by the model were analyzed as randomized block design, with grass regrowth age as the fixed effect and animal the as random effect (blocks). The grass silage ensiled with 56 days of regrowth had the highest (P<0.05) effective degradability of DM and NDF calculated for fractional rate of particulate passage of 2%/h. All silages had low CP soluble fraction (<25.4%) and effective degradability calculated for fractional rate of particulate passage of 2%/h (<40.1%). A greater (P<0.05) NDF lag time was observed for the silages ensiled with 84 and 112d compared to the silage produced with 56d of regrowth. The ruminal degradation kinetics of Andropogon gayanus grass silages showed that the grass ensiled with 56 days of regrowth had higher nutritional value. RESUMO - Maturity... Mostrar Tudo |
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Palavras-Chave: |
Gamba grass; Maturity; Preserved forage; Ruminal degradability; Tropical grass. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/122515/1/Cnpgl-2014-ArqBrasMedVetZ-In-situ.pdf
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Marc: |
LEADER 03871naa a2200277 a 4500
001 2013820
005 2022-08-12
008 2014 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/1678-6780$2DOI
100 1 $aRIBEIRO JÚNIOR, G. de O.
245 $aIn situ degradation kinetic of Andropogon gayanus grass silages harvested at three stages of maturity.$h[electronic resource]
260 $c2014
520 $aABSTRACT - Maturity is considered the primary factor affecting the nutritive value of forages. The aim of this study was to evaluate and compare dry matter (DM), crude protein (CP) and neutral detergent fiber (NDF) ruminal degradation kinetics of Andropogon gayanus grass silages harvested at three stages of maturity (56, 84 and 112 d). Dried and ground silage samples (5 mm) were incubated in nylon bags inside the rumen for 0, 6, 12, 24, 48, 72 and 96 h to estimate the kinetics of ruminal DM, CP and NDF degradation. The ruminal kinetic parameters of the silages from each treatment (56, 84 and 112 d of regrowth) in each animal (5 cows) were determined by the model: y = a + b(1 ? e?c(t?L)). The parameters generated by the model were analyzed as randomized block design, with grass regrowth age as the fixed effect and animal the as random effect (blocks). The grass silage ensiled with 56 days of regrowth had the highest (P<0.05) effective degradability of DM and NDF calculated for fractional rate of particulate passage of 2%/h. All silages had low CP soluble fraction (<25.4%) and effective degradability calculated for fractional rate of particulate passage of 2%/h (<40.1%). A greater (P<0.05) NDF lag time was observed for the silages ensiled with 84 and 112d compared to the silage produced with 56d of regrowth. The ruminal degradation kinetics of Andropogon gayanus grass silages showed that the grass ensiled with 56 days of regrowth had higher nutritional value. RESUMO - Maturity is considered the primary factor affecting the nutritive value of forages. The aim of this study was to evaluate and compare dry matter (DM), crude protein (CP) and neutral detergent fiber (NDF) ruminal degradation kinetics of Andropogon gayanus grass silages harvested at three stages of maturity (56, 84 and 112 d). Dried and ground silage samples (5 mm) were incubated in nylon bags inside the rumen for 0, 6, 12, 24, 48, 72 and 96 h to estimate the kinetics of ruminal DM, CP and NDF degradation. The ruminal kinetic parameters of the silages from each treatment (56, 84 and 112 d of regrowth) in each animal (5 cows) were determined by the model: y = a + b(1 ? e?c(t?L)). The parameters generated by the model were analyzed as randomized block design, with grass regrowth age as the fixed effect and animal the as random effect (blocks). The grass silage ensiled with 56 days of regrowth had the highest (P<0.05) effective degradability of DM and NDF calculated for fractional rate of particulate passage of 2%/h. All silages had low CP soluble fraction (<25.4%) and effective degradability calculated for fractional rate of particulate passage of 2%/h (<40.1%). A greater (P<0.05) NDF lag time was observed for the silages ensiled with 84 and 112d compared to the silage produced with 56d of regrowth. The ruminal degradation kinetics of Andropogon gayanus grass silages showed that the grass ensiled with 56 days of regrowth had higher nutritional value.
653 $aGamba grass
653 $aMaturity
653 $aPreserved forage
653 $aRuminal degradability
653 $aTropical grass
700 1 $aVELASCO, F. O.
700 1 $aFARIA JÚNIOR, W. G. de
700 1 $aTEIXEIRA, A. de M.
700 1 $aMACHADO, F. S.
700 1 $aMAGALHÃES, F. A.
700 1 $aJAYME, D. G.
700 1 $aGONÇALVES, L. C.
773 $tArquivo Brasileiro de Medicina Veterinária e Zootecnia$gv. 66, n. 6, p. 1883-1890, 2014.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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| Registros recuperados : 10 | |
| 2. |  | CARVALHO, W. T. V.; GONÇALVES, L. C.; RODRIGUES, J. A. S.; TEIXEIRA, A. M.; FARIA JÚNIOR, W. G. de; RIBEIRO, M. H. Perfil fermentativo das silagens de seis genótipos de sorgo (Sorghum bicolor (L.) Moench): frações fibrosas. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 44., 2007, Jaboticabal. O avanço científico e tecnológico na produção animal: anais. Jaboticabal: Sociedade Brasileira de Zootecnia: UNESP, Faculdade de Ciências Agrárias e Veterinárias, 2007. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 3. | | CARVALHO, W. T. V.; RODRIGUES, J. A. S.; CASTRO, G. H. de F.; RIBEIRO JUNIOR, G. de O.; GONÇALVES, L. C.; FARIA JUNIOR, W. G. de. Perfil fermentativo das silagens de seis genótipos de sorgo (Sorghum bicolor (L.) Moench): matéria seca, pH e nitrogênio amoniacal. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 44., 2007, Jaboticabal. O avanço científico e tecnológico na produção animal: anais. Jaboticabal: Sociedade Brasileira de Zootecnia: UNESP, Faculdade de Ciências Agrárias e Veterinárias, 2007. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 4. | | GONÇALVES, L. C.; FARIA JÚNIOR, W. G. de; SOUSA, L. F.; PEREIRA, L. G. R.; GUIMARÃES JÚNIOR, R.; JAYME, D. G. Produção de volumosos no semi-árido mineiro. In: SIMPÓSIO DE PESQUISA EM CIÊNCIAS AGRÁRIAS NO SEMI-ÁRIDO MINEIRO, 1., 2007, Janaúba. Desenvolvimento sustentável regional: anais. Janaúba: Unimontes, 2007. p. 376-418.| Tipo: Artigo em Anais de Congresso / Nota Técnica | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Cerrados. |
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| 5. | | FARIA JUNIOR, W. G. de; COLODO, J. C. N.; FARIA, W. G. de; GONÇALVES, L. C.; BORGES, I.; RODRIGUES, J. A. dos S.; RODRIGUEZ, N. M.; BORGES, A. L. da C. C.; SALIBA, E. de O. S. Frações fibrosas das silagens do sorgo BRS-610 em sete idades de corte. In: SIMPÓSIO INTERNACIONAL SOBRE CAPRINOS E OVINOS DE CORTE, 3; FEIRA NACIONAL DO AGRONEGÓCIO DA CAPRINO-OVINOCULTURA DE CORTE, 2007, João Pessoa. Anais... João Pessoa: EMEPA-PB, 2007.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 6. | | FARIA JUNIOR, W. G. de; GONÇALVES, L. C.; JAYME, D. G.; CARVALHO, W. T. V.; RODRIGUES, J. A. S.; BORGES, I.; RODRIGUEZ, N. M.; BORGES, A. L. da C. C.; SALIBA, E. O. S. Qualidade da silagem do sorgo forrageiro BRS-610 em estádios de maturação. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 43., 2006, João Pessoa. Anais... João Pessoa: SBZ: UFPB, 2006. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 7. | | RIBEIRO JÚNIOR, G. de O.; VELASCO, F. O.; FARIA JÚNIOR, W. G. de; TEIXEIRA, A. de M.; MACHADO, F. S.; MAGALHÃES, F. A.; JAYME, D. G.; GONÇALVES, L. C. In situ degradation kinetic of Andropogon gayanus grass silages harvested at three stages of maturity. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, v. 66, n. 6, p. 1883-1890, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 8. | | FARIA JÚNIOR, W. G. de; COLODO, J. C. N.; JAYME, C. G.; FARIA, W. G. de; GONÇALVES, L. C.; BORGES, I.; RODRIGUES, J. A. dos S.; RODRIGUEZ, N. M.; BORGES, A. L. da C. C.; SALIBA, E. de O. S. Digestibilidade "in vitro" Daisy II (ANKOM): comparação de meios. In: SIMPÓSIO INTERNACIONAL SOBRE CAPRINOS E OVINOS DE CORTE, 3; FEIRA NACIONAL DO AGRONEGÓCIO DA CAPRINO-OVINOCULTURA DE CORTE, 2007, João Pessoa. Anais... João Pessoa: EMEPA-PB, 2007.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 9. | | TEIXEIRA, A. de M.; RIBEIRO JÚNIOR, G. de O.; VELASCO, F. O.; FARIA JÚNIOR, W. G. de; RODRIGUEZ, N. M.; RODRIGUES, J. A. S.; McALLISTER, T.; GONÇALVES, L. C. Intake and digestibility of sorghum (Sorghum bicolor, L. Moench) silages with different tannin contents in sheep. Revista Brasileira de Zootecnia, Viçosa, MG, v. 43, n. 1, p. 14-19, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 10. | | FARIA JUNIOR, W. G. de; GONÇALVES, L. C.; JAYME, D. G.; CASTRO, G. H. de F.; TEIXEIRA, A. de M.; RODRIGUES, J. A. S.; BORGES, I.; RODRIGUEZ, N. M.; BORGES, A. L. da C. C.; SALIBA, E. O. S. Momento de colheita do sorgo forrageiro BRS-610. I. Características agronômicas. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 43., 2006, João Pessoa. Anais... João Pessoa: SBZ: UFPB, 2006. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 10 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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