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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 : 13 | |
| 1. |  | MAGALHÃES, F. A.; GONÇALVES, L. C.; JAYME, D. G.; CRUZ, D. S. G.; TOMICH, T. R.; FERREIRA, P. D. S. Cana-de-açucar ensilada: revisão de literatura. In: Conferência Universitária de Referência Rural e Acadêmica do Leite, 1., 2012, Montes Claros. Artigos técnicos... Montes Claros: UFMG, 2012. p. 38-44.| Biblioteca(s): Embrapa Gado de Leite. |
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| 3. | | TOMICH, T. R.; FERREIRA, P. D. S.; MAGALHÃES, F. A.; VELASCO, F. O.; JAYME, D. G.; GONÇALVES, L. C. Parte aérea da mandioca para gado leiteiro: revisão de literatura. In: Conferência Universitária de Referência Rural e Acadêmica do Leite, 1., 2012, Montes Claros. Artigos técnicos... Montes Claros: UFMG, 2012. p. 147-154.| Biblioteca(s): Embrapa Gado de Leite. |
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| 4. | | VELASCO, F. O.; GONÇALVES, L. C.; JAYME, D. G.; MAGALHÃES, F. A.; TOMICH, T. R.; FERREIRA, P. D. S. Os taninos e seu efeito sobre a produção de metano ruminal: revisão de literatura. In: Conferência Universitária de Referência Rural e Acadêmica do Leite, 1., 2012, Montes Claros. Artigos técnicos... Montes Claros: UFMG, 2012. p. 134-139.| Biblioteca(s): Embrapa Gado de Leite. |
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| 5. | | MAGALHÃES, F. A.; GONÇALVES, L. C.; VELASCO, F. O.; RAMIRES, M. A.; JAYME, D. G.; FARIA JR, W. G. DE; TEIXEIRA, A. DE C.; MACHADO, F. S. Cinética de fermentação ruminal do feno do capim Brachiaria decumbens cortado em tres diferentes idades. In: Congresso Brasileiro de Zootecnia, 21., 2011, Maceió. Anais...| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 6. | | VELASCO, F. O.; GONÇALVES, L. C.; MAGALHAES, F. A.; RAMIREZ, M. A.; JAYME, D. G.; MACHADO, F. S.; POSSAS, F. P.; FARIA JR. W. G. DE. Consumo voluntario e digestibilidade das frações fibrosas do capim Brachiaria decumbens verde em tres idades de corte. In: Congresso Brasileiro de Zootecnia, 21., 2011, Maceió. Anais...| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 7. | | MARTINS, C. E.; CÓSER, A. C.; SOUZA, A. D. de; FRANCO, P. R. V.; MAGALHÃES, F. A. R.; LEMOS, A. de M.; BERNARDO, W. F. (ed.). Tecnologias alternativas para a produção de leite e derivados em bases sustentáveis. Juiz de Fora: Embrapa Gado de Leite, 2004. 142 p. Trabalhos apresentados ao 6 Minas Leite, 2004, Juiz de Fora.| Biblioteca(s): Embrapa Gado de Leite. |
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| 8. | | PIRES, M. de F. A.; LANGE, C. C.; BORGES, C. A. V.; DINIZ, F. H.; SEABRA, J. C. F. S.; MARTINS, C. E.; MAGALHÃES, F. A. R.; LEMOS, A. de M.; MAGALHAES JUNIOR, W. C. P. de; VICENTINI, N. M. Caracterização do Queijo Artesanal de Alagoa - MG: parâmetros físicos, físicoquímicos, microbiológicos e sensoriais. Juiz de Fora: Embrapa Gado de Leite, 2019. 37 p. il.; color (Embrapa Gado de Leite. Boletim de Pesquisa e Desenvolvimento, 41).| Tipo: Boletim de Pesquisa e Desenvolvimento |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 9. | | MAGALHÃES, F. A.; GONÇALVES, L. C.; PEREIRA, L. G. R.; CRUZ, D. S. G.; PIRES NETO, O. de S.; ABREU, D. C. de; JAYME, D. G.; TEIXEIRA, A. de M. Degradabilidade efetiva da matéria seca da silagem do capim Brachiaria decumbens em diferentes idades de corte. In: CONGRESSO INTERNACIONAL DO LEITE, 12.; WORKSHOP DE POLÍTICAS PÚBLICAS, 12.; SIMPÓSIO DE SUSTENTABILIDADE DA ATIVIDADE LEITEIRA, 13., 2013, Porto Velho. Anais... Brasília, DF: Embrapa, 2013. 3 p. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 10. | | MAGALHÃES, F. A.; GONÇALVES, L. C.; PEREIRA, L. G. R.; VELASCO, F. O.; PIRES NETO, O. de S.; CRUZ, D. S. G.; ABREL, D. C. de; TEIXEIRA, A. de M. Degradabilidade in vitro da silagem do capim Brachiaria decumbens em diferentes idades de corte. In: CONGRESSO INTERNACIONAL DO LEITE, 12.; WORKSHOP DE POLÍTICAS PÚBLICAS, 12.; SIMPÓSIO DE SUSTENTABILIDADE DA ATIVIDADE LEITEIRA, 13., 2013, Porto Velho. Anais... Brasília, DF: Embrapa, 2013. 3 p. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 11. | | MAGALHÃES, F. A.; GONÇALVES, L. C.; PEREIRA, L. G. R.; VELASCO, F. O.; PIRES NETO, O. de S.; CRUZ, D. S. G.; ABREL, D. C. de; TEIXEIRA, A. de M. Perdas energéticas e eficiência de utilização da energia da silagem do capim Brachiaria decumbens em diferentes idades de corte. In: CONGRESSO INTERNACIONAL DO LEITE, 12.; WORKSHOP DE POLÍTICAS PÚBLICAS, 12.; SIMPÓSIO DE SUSTENTABILIDADE DA ATIVIDADE LEITEIRA, 13., 2013, Porto Velho. Anais... Brasília, DF: Embrapa, 2013. 3 p. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 12. | | MAGALHÃES, F. A.; GONÇALVES, L. C.; PEREIRA, L. G. R.; VELASCO, F. O.; PIRES NETO, O. de S.; CRUZ, D. S. G.; ABREL, D. C. de; JAYME, D. G. Produção acumulada de gases pela técnica in vitro da silagem do capim Brachiaria decumbens em diferentes idades de corte. In: CONGRESSO INTERNACIONAL DO LEITE, 12.; WORKSHOP DE POLÍTICAS PÚBLICAS, 12.; SIMPÓSIO DE SUSTENTABILIDADE DA ATIVIDADE LEITEIRA, 13., 2013, Porto Velho. Anais... Brasília, DF: Embrapa, 2013. 3 p. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 13. | | 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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| Registros recuperados : 13 | |
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