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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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Embrapa Gado de Leite (CNPGL) |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
13/11/2012 |
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Data da última atualização: |
05/08/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 5 |
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Autoria: |
FERNANDES, C. P. C.; BRAZ, A. J. B. P.; PROCOPIO, S. de O.; DAN, H. de A.; BRAZ, G. B. P.; BARROSO, A. L. de L.; MENEZES, C. C. E. de; SIMON, G. A.; BRAZ, L. B. P. |
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Afiliação: |
CAMILA PEREIRA CAIXETA FERNANDES, FESURV; ANTÔNIO JOAQUIM BRAGA PEREIRA BRAZ, FESURV; SERGIO DE OLIVEIRA PROCOPIO, CNPSO; HUGO DE ALMEIDA DAN, UEM; GUILHERME BRAGA PEREIRA BRAZ, UEM; ALBERTO LEÃO DE LEMOS BARROSO, FESURV; CARLOS CÉSAR EVANGELISTA DE MENEZES, FESURV; GUSTAVO ANDRÉ SIMON, FESURV; LUCAS BRAGA PEREIRA BRAZ, FESURV. |
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Título: |
Seletividade de herbicidas registrados para uso em pré e pós-emergência na cultura da cana-de-açúcar ao feijoeiro-comum. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Revista Trópica - Ciências Agrárias e Biológicas, v. 6, n. 2, p. 8-21, 2012. |
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Idioma: |
Português |
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Conteúdo: |
RESUMO: O trabalho teve como objetivo avaliar a seletividade dos principais herbicidas registrados para uso na cultura da cana-de-açúcar, aplicados em pré ou pós-emergência, ao feijoeiro-comum (cultivar Pérola). Na modalidade de pré-emergência os herbicidas avaliados foram: ametryn (2.500 g ha-1), tebuthiuron (800 g ha-1), [hexazinone + diuron] (237,6 + 842,4 g ha-1), metribuzin (1.440 g ha-1), clomazone (800 g ha-1), isoxaflutole (112,5 g ha-1), sulfentrazone (600 g ha-1), imazapic (105 g ha-1), trifluralin (1.800 g ha-1) e s-metolachlor (1.920 g ha-1), mais uma testemunha sem aplicação. Já na modalidade de pós-emergência os tratamentos foram: MSMA (1.440 g ha-1), MSMA + diuron (1.080 + 420 g ha-1), [hexazinone + diuron] (237,6 + 842,4 g ha-1), metribuzin (1.440 g ha-1), ametryn (1.500 g ha-1), [ametryn + trifloxysulfuron sodium] (1.280 + 32,4 g ha-1), halosulfuron (112,5 g ha-1), 2,4-D (1.005 g ha-1) e mesotrione (120 g ha-1), mais uma testemunha. Foram avaliadas a fitointoxicação, estande de plantas, altura de plantas, matéria verde e seca da parte aérea, número de plantas na colheita, altura de inserção da primeira vagem e produtividade de grãos. Observou-se que nenhum herbicida avaliado é seletivo ao feijão, nas aplicações em pré ou pós-emergência, pois todos reduzem significativamente a produtividade de grãos. ABSTRACT: Selectivity of pre and postemergence herbicides registered for use in sugarcane to common beans. This work was aimed at evaluating the selectivity of main herbicides registered for use in sugar cane at pre or postemergence applied at beans (?Carioca? Group ? cultivar ?Pérola?). At preemergence treatments evaluated consisted of: ametryn (2,500 g ha-1), tebuthiuron (800 g ha-1), [hexazinone + diuron] (237.6 + 842.4 g ha-1), metribuzin (1,440 g ha-1), clomazone (800 g ha-1), isoxaflutole (112.5 g ha-1), sulfentrazone (600 g ha-1), imazapic (105 g ha-1), trifluralin (1,800 g ha-1), S-metolachlor (1,920 g ha-1), and a check without herbicide application. At postemergence treatments evaluated were: MSMA (1,440 g ha-1), MSMA + diuron (1,080 + 420 g ha-1), [hexazinone + diuron] (237.6 + 842.4 g ha-1), metribuzin (1,440 g ha-1), ametryn (1,500 g ha-1), [ametryn + trifloxysulfuron sodium] (1,280 + 32.4 g ha-1), halosulfuron (112.5 g ha-1), 2.4-D (1,005 g ha-1), mesotrione (120 g ha-1), as wells as a check without herbicide application. Phytointoxication, plant stand, plant height, green and dry matter of shoots, number of plants at harvest, height of first pod insertion, and grain yield were evaluated. No herbicide analyzed is selective to beans, at pre or postemergence applications once they significantly reduce grain yield. MenosRESUMO: O trabalho teve como objetivo avaliar a seletividade dos principais herbicidas registrados para uso na cultura da cana-de-açúcar, aplicados em pré ou pós-emergência, ao feijoeiro-comum (cultivar Pérola). Na modalidade de pré-emergência os herbicidas avaliados foram: ametryn (2.500 g ha-1), tebuthiuron (800 g ha-1), [hexazinone + diuron] (237,6 + 842,4 g ha-1), metribuzin (1.440 g ha-1), clomazone (800 g ha-1), isoxaflutole (112,5 g ha-1), sulfentrazone (600 g ha-1), imazapic (105 g ha-1), trifluralin (1.800 g ha-1) e s-metolachlor (1.920 g ha-1), mais uma testemunha sem aplicação. Já na modalidade de pós-emergência os tratamentos foram: MSMA (1.440 g ha-1), MSMA + diuron (1.080 + 420 g ha-1), [hexazinone + diuron] (237,6 + 842,4 g ha-1), metribuzin (1.440 g ha-1), ametryn (1.500 g ha-1), [ametryn + trifloxysulfuron sodium] (1.280 + 32,4 g ha-1), halosulfuron (112,5 g ha-1), 2,4-D (1.005 g ha-1) e mesotrione (120 g ha-1), mais uma testemunha. Foram avaliadas a fitointoxicação, estande de plantas, altura de plantas, matéria verde e seca da parte aérea, número de plantas na colheita, altura de inserção da primeira vagem e produtividade de grãos. Observou-se que nenhum herbicida avaliado é seletivo ao feijão, nas aplicações em pré ou pós-emergência, pois todos reduzem significativamente a produtividade de grãos. ABSTRACT: Selectivity of pre and postemergence herbicides registered for use in sugarcane to common beans. This work was aimed at evaluating the selectivity of m... Mostrar Tudo |
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Palavras-Chave: |
Cana-de-açúcar. |
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Thesagro: |
Erva daninha; Feijão; Herbicida. |
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Thesaurus NAL: |
Beans; Herbicides; Sugarcane; Weeds. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/70060/1/seletividade.rev.tropica.6.2.2012.pdf
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Marc: |
LEADER 03646naa a2200313 a 4500
001 1939640
005 2017-08-05
008 2012 bl uuuu u00u1 u #d
100 1 $aFERNANDES, C. P. C.
245 $aSeletividade de herbicidas registrados para uso em pré e pós-emergência na cultura da cana-de-açúcar ao feijoeiro-comum.$h[electronic resource]
260 $c2012
520 $aRESUMO: O trabalho teve como objetivo avaliar a seletividade dos principais herbicidas registrados para uso na cultura da cana-de-açúcar, aplicados em pré ou pós-emergência, ao feijoeiro-comum (cultivar Pérola). Na modalidade de pré-emergência os herbicidas avaliados foram: ametryn (2.500 g ha-1), tebuthiuron (800 g ha-1), [hexazinone + diuron] (237,6 + 842,4 g ha-1), metribuzin (1.440 g ha-1), clomazone (800 g ha-1), isoxaflutole (112,5 g ha-1), sulfentrazone (600 g ha-1), imazapic (105 g ha-1), trifluralin (1.800 g ha-1) e s-metolachlor (1.920 g ha-1), mais uma testemunha sem aplicação. Já na modalidade de pós-emergência os tratamentos foram: MSMA (1.440 g ha-1), MSMA + diuron (1.080 + 420 g ha-1), [hexazinone + diuron] (237,6 + 842,4 g ha-1), metribuzin (1.440 g ha-1), ametryn (1.500 g ha-1), [ametryn + trifloxysulfuron sodium] (1.280 + 32,4 g ha-1), halosulfuron (112,5 g ha-1), 2,4-D (1.005 g ha-1) e mesotrione (120 g ha-1), mais uma testemunha. Foram avaliadas a fitointoxicação, estande de plantas, altura de plantas, matéria verde e seca da parte aérea, número de plantas na colheita, altura de inserção da primeira vagem e produtividade de grãos. Observou-se que nenhum herbicida avaliado é seletivo ao feijão, nas aplicações em pré ou pós-emergência, pois todos reduzem significativamente a produtividade de grãos. ABSTRACT: Selectivity of pre and postemergence herbicides registered for use in sugarcane to common beans. This work was aimed at evaluating the selectivity of main herbicides registered for use in sugar cane at pre or postemergence applied at beans (?Carioca? Group ? cultivar ?Pérola?). At preemergence treatments evaluated consisted of: ametryn (2,500 g ha-1), tebuthiuron (800 g ha-1), [hexazinone + diuron] (237.6 + 842.4 g ha-1), metribuzin (1,440 g ha-1), clomazone (800 g ha-1), isoxaflutole (112.5 g ha-1), sulfentrazone (600 g ha-1), imazapic (105 g ha-1), trifluralin (1,800 g ha-1), S-metolachlor (1,920 g ha-1), and a check without herbicide application. At postemergence treatments evaluated were: MSMA (1,440 g ha-1), MSMA + diuron (1,080 + 420 g ha-1), [hexazinone + diuron] (237.6 + 842.4 g ha-1), metribuzin (1,440 g ha-1), ametryn (1,500 g ha-1), [ametryn + trifloxysulfuron sodium] (1,280 + 32.4 g ha-1), halosulfuron (112.5 g ha-1), 2.4-D (1,005 g ha-1), mesotrione (120 g ha-1), as wells as a check without herbicide application. Phytointoxication, plant stand, plant height, green and dry matter of shoots, number of plants at harvest, height of first pod insertion, and grain yield were evaluated. No herbicide analyzed is selective to beans, at pre or postemergence applications once they significantly reduce grain yield.
650 $aBeans
650 $aHerbicides
650 $aSugarcane
650 $aWeeds
650 $aErva daninha
650 $aFeijão
650 $aHerbicida
653 $aCana-de-açúcar
700 1 $aBRAZ, A. J. B. P.
700 1 $aPROCOPIO, S. de O.
700 1 $aDAN, H. de A.
700 1 $aBRAZ, G. B. P.
700 1 $aBARROSO, A. L. de L.
700 1 $aMENEZES, C. C. E. de
700 1 $aSIMON, G. A.
700 1 $aBRAZ, L. B. P.
773 $tRevista Trópica - Ciências Agrárias e Biológicas$gv. 6, n. 2, p. 8-21, 2012.
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