Microbial populations, fermentative profile and chemical composition of signalgrass silages at different regrowth ages
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | http://dx.doi.org/10.1590/S1516-35982011000400007 http://www.locus.ufv.br/handle/123456789/14485 |
Resumo: | Microbial populations, pH, ammonium nitrogen/total nitrogen (N-NH3) ratio, concentrations of lactic acid, acetic acid and butyric acid and the chemical composition of Brachiaria decumbens cv. Basiliski silages at different regrowth ages (30, 40, 50, 60 and 70 days) were evaluated by using 2-kg capacity laboratory silos. It was used a 5 × 6 factorial scheme (5 regrowth ages × 6 fermentation periods) in a complete random design, with three replicates. The fermentation periods were 1, 3, 7, 14, 28 and 56 days. Lactic acid bacteria populations were recorded in fresh forage varying from 3.93 (30 days of regrowth) to 5.51 (70 days of regrowth) log colony-forming units (cfu)/g forage. Maximum populations of these microorganisms were recorded in the silages on the seventh day of fermentation (8.69 log cfu/g silage). Enterobacteria populations persisted until the 28th day, with maximum values found as early as the first day of fermentation (7.89 log cfu/g silage). Levels of DM, NDF, ADF and ADIN increased linearly whereas values of CP decreased linearly with age of regrowth of the plants. There was a linear reduction in the levels of DM, CP and NDF and linear increase in the levels of ADIN over the period of fermentation. N-NH3 level decreased and increased linearly with regrowth age and fermentation period, respectively. The pH decreased exponentially with fermentation period. Lactic acid increased and butyric acid decreased linearly with regrowth age. The predominant Lactobacillus plantarum species in signalgrass plants is Lactobacillus plantarum. |
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Microbial populations, fermentative profile and chemical composition of signalgrass silages at different regrowth agesAcetic acidButyric acidEnterobacteriaLactic acidLactic acid bacteriaMicrobial populations, pH, ammonium nitrogen/total nitrogen (N-NH3) ratio, concentrations of lactic acid, acetic acid and butyric acid and the chemical composition of Brachiaria decumbens cv. Basiliski silages at different regrowth ages (30, 40, 50, 60 and 70 days) were evaluated by using 2-kg capacity laboratory silos. It was used a 5 × 6 factorial scheme (5 regrowth ages × 6 fermentation periods) in a complete random design, with three replicates. The fermentation periods were 1, 3, 7, 14, 28 and 56 days. Lactic acid bacteria populations were recorded in fresh forage varying from 3.93 (30 days of regrowth) to 5.51 (70 days of regrowth) log colony-forming units (cfu)/g forage. Maximum populations of these microorganisms were recorded in the silages on the seventh day of fermentation (8.69 log cfu/g silage). Enterobacteria populations persisted until the 28th day, with maximum values found as early as the first day of fermentation (7.89 log cfu/g silage). Levels of DM, NDF, ADF and ADIN increased linearly whereas values of CP decreased linearly with age of regrowth of the plants. There was a linear reduction in the levels of DM, CP and NDF and linear increase in the levels of ADIN over the period of fermentation. N-NH3 level decreased and increased linearly with regrowth age and fermentation period, respectively. The pH decreased exponentially with fermentation period. Lactic acid increased and butyric acid decreased linearly with regrowth age. The predominant Lactobacillus plantarum species in signalgrass plants is Lactobacillus plantarum.Foram avaliadas as populações microbianas, o pH, a relação nitrogênio amoniacal/nitrogênio total (N-NH3), as concentrações de ácidos láctico, acético e butírico e a composição bromatológica de silagens de Brachiaria decumbens cv. Basiliski de cinco idades de rebrotação (30, 40, 50, 60 e 70 dias) utilizando-se silos laboratoriais de 2 kg de capacidade. Utilizou-se um esquema fatorial 5 × 6 (5 idades de rebrotação × 6 períodos de fermentação), em um delineamento inteiramente casualizado, com três repetições. Os períodos de fermentação foram 1, 3, 7, 14, 28 e 56 dias. Na forragem fresca, foram registradas populações de bactérias do ácido láctico variando entre 3,93 (30 dias de rebrotação) e 5,51 (70 dias de rebrotação) log unidades formadoras de colônia (ufc)/g de forragem. Nas silagens, foram registradas populações máximas desses microrganismos no sétimo dia de fermentação (8,69 log ufc/g de silagem). As populações de enterobactérias persistiram até o 28º dia, com os valores máximos observados logo no primeiro dia de fermentação (7,89 log ufc/g de silagem). Os teores de MS, FDN, FDA e NIDA aumentaram linearmente, enquanto os de PB diminuíram linearmente com a idade de rebrotação das plantas. Houve redução linear dos teores de MS, PB e FDN e aumento linear dos teores de NIDA com o avanço do período fermentativo. O teor de N-NH3 decresceu e aumentou linearmente com a idade de rebrotação e com o período de fermentação, respectivamente. O pH decresceu exponencialmente com o período de fermentação. Os teores de ácido láctico aumentaram e os de ácido butírico decresceram linearmente com a idade de rebrotação. A espécie de Lactobacillus predominante em plantas de capim-braquiária é o Lactobacillus plantarum.Revista Brasileira de Zootecnia2017-12-06T16:02:44Z2017-12-06T16:02:44Z2010-10-29info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlepdfapplication/pdf1806-9290http://dx.doi.org/10.1590/S1516-35982011000400007http://www.locus.ufv.br/handle/123456789/14485engv. 40, n. 4, p. 747-755, Apr. 2011Santos, Edson MauroPereira, Odilon GomesGarcia, RasmoFerreira, Celia Lucia de Luces FortesOliveira, Juliana Silva deSilva, Thiago Carvalho daRosa, Lilian Oliveirainfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFV2024-07-12T07:10:45Zoai:locus.ufv.br:123456789/14485Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452024-07-12T07:10:45LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.none.fl_str_mv |
Microbial populations, fermentative profile and chemical composition of signalgrass silages at different regrowth ages |
title |
Microbial populations, fermentative profile and chemical composition of signalgrass silages at different regrowth ages |
spellingShingle |
Microbial populations, fermentative profile and chemical composition of signalgrass silages at different regrowth ages Santos, Edson Mauro Acetic acid Butyric acid Enterobacteria Lactic acid Lactic acid bacteria |
title_short |
Microbial populations, fermentative profile and chemical composition of signalgrass silages at different regrowth ages |
title_full |
Microbial populations, fermentative profile and chemical composition of signalgrass silages at different regrowth ages |
title_fullStr |
Microbial populations, fermentative profile and chemical composition of signalgrass silages at different regrowth ages |
title_full_unstemmed |
Microbial populations, fermentative profile and chemical composition of signalgrass silages at different regrowth ages |
title_sort |
Microbial populations, fermentative profile and chemical composition of signalgrass silages at different regrowth ages |
author |
Santos, Edson Mauro |
author_facet |
Santos, Edson Mauro Pereira, Odilon Gomes Garcia, Rasmo Ferreira, Celia Lucia de Luces Fortes Oliveira, Juliana Silva de Silva, Thiago Carvalho da Rosa, Lilian Oliveira |
author_role |
author |
author2 |
Pereira, Odilon Gomes Garcia, Rasmo Ferreira, Celia Lucia de Luces Fortes Oliveira, Juliana Silva de Silva, Thiago Carvalho da Rosa, Lilian Oliveira |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Santos, Edson Mauro Pereira, Odilon Gomes Garcia, Rasmo Ferreira, Celia Lucia de Luces Fortes Oliveira, Juliana Silva de Silva, Thiago Carvalho da Rosa, Lilian Oliveira |
dc.subject.por.fl_str_mv |
Acetic acid Butyric acid Enterobacteria Lactic acid Lactic acid bacteria |
topic |
Acetic acid Butyric acid Enterobacteria Lactic acid Lactic acid bacteria |
description |
Microbial populations, pH, ammonium nitrogen/total nitrogen (N-NH3) ratio, concentrations of lactic acid, acetic acid and butyric acid and the chemical composition of Brachiaria decumbens cv. Basiliski silages at different regrowth ages (30, 40, 50, 60 and 70 days) were evaluated by using 2-kg capacity laboratory silos. It was used a 5 × 6 factorial scheme (5 regrowth ages × 6 fermentation periods) in a complete random design, with three replicates. The fermentation periods were 1, 3, 7, 14, 28 and 56 days. Lactic acid bacteria populations were recorded in fresh forage varying from 3.93 (30 days of regrowth) to 5.51 (70 days of regrowth) log colony-forming units (cfu)/g forage. Maximum populations of these microorganisms were recorded in the silages on the seventh day of fermentation (8.69 log cfu/g silage). Enterobacteria populations persisted until the 28th day, with maximum values found as early as the first day of fermentation (7.89 log cfu/g silage). Levels of DM, NDF, ADF and ADIN increased linearly whereas values of CP decreased linearly with age of regrowth of the plants. There was a linear reduction in the levels of DM, CP and NDF and linear increase in the levels of ADIN over the period of fermentation. N-NH3 level decreased and increased linearly with regrowth age and fermentation period, respectively. The pH decreased exponentially with fermentation period. Lactic acid increased and butyric acid decreased linearly with regrowth age. The predominant Lactobacillus plantarum species in signalgrass plants is Lactobacillus plantarum. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-10-29 2017-12-06T16:02:44Z 2017-12-06T16:02:44Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
1806-9290 http://dx.doi.org/10.1590/S1516-35982011000400007 http://www.locus.ufv.br/handle/123456789/14485 |
identifier_str_mv |
1806-9290 |
url |
http://dx.doi.org/10.1590/S1516-35982011000400007 http://www.locus.ufv.br/handle/123456789/14485 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
v. 40, n. 4, p. 747-755, Apr. 2011 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
pdf application/pdf |
dc.publisher.none.fl_str_mv |
Revista Brasileira de Zootecnia |
publisher.none.fl_str_mv |
Revista Brasileira de Zootecnia |
dc.source.none.fl_str_mv |
reponame:LOCUS Repositório Institucional da UFV instname:Universidade Federal de Viçosa (UFV) instacron:UFV |
instname_str |
Universidade Federal de Viçosa (UFV) |
instacron_str |
UFV |
institution |
UFV |
reponame_str |
LOCUS Repositório Institucional da UFV |
collection |
LOCUS Repositório Institucional da UFV |
repository.name.fl_str_mv |
LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV) |
repository.mail.fl_str_mv |
fabiojreis@ufv.br |
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1822610609282220032 |