Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing.

Detalhes bibliográficos
Autor(a) principal: FERREIRA, D. A.
Data de Publicação: 2018
Outros Autores: GONÇALVES, L. C., RODRIGUES, J. A. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1091872
Resumo: Greater ruminal degradability has been reported in mutant plants with brown midrib (bmr). The aim of this study was to evaluate the in situ degradability of dry matter (DM), neutral detergent fibre (NDF) and crude protein (CP) in the experimental sorghum-sudangrass bmr hybrids BR007 x Tx2784bmr and Tx635x Tx2785bmr, conventional experimental hybrids CMSxS206 x Tx2784 and Tx636 x Tx2785, and the control hybrid BRS801, harvested 51 days after planting. Three sheep with ruminal cannulae were used. The experimental design was of randomised complete blocks in subdivided lots. The mean values for DM and NDF disappearance were higher in the bmr hybrids after 6 h incubation. These plants had a higher rate of degradation (mean value of 6.93%/h) for fraction b of the DM compared to conventional plants (mean value of 5.73%/h), and greater effective DM degradability. The mean values for effective NDF degradability at passage rates of 2, 5 and 8%/h were 72.7% and 62.0%, 56.1% and 45.6%, and 47.1% and 37.3% for the bmr and conventional hybrids respectively. The experimental mutant hybrids showed higher values for effective CP degradability in relation to the remainder, however, the differences were more subtle in relation to those seen for DM and NDF. The results of the present work show the potential of using sorghum-sudangrass bmr hybrids in systems of ruminant production with high nutritional requirements.
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spelling Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing.Sorghum sudanensePlanta ForrageiraRuminanteSorghum BicolorGreater ruminal degradability has been reported in mutant plants with brown midrib (bmr). The aim of this study was to evaluate the in situ degradability of dry matter (DM), neutral detergent fibre (NDF) and crude protein (CP) in the experimental sorghum-sudangrass bmr hybrids BR007 x Tx2784bmr and Tx635x Tx2785bmr, conventional experimental hybrids CMSxS206 x Tx2784 and Tx636 x Tx2785, and the control hybrid BRS801, harvested 51 days after planting. Three sheep with ruminal cannulae were used. The experimental design was of randomised complete blocks in subdivided lots. The mean values for DM and NDF disappearance were higher in the bmr hybrids after 6 h incubation. These plants had a higher rate of degradation (mean value of 6.93%/h) for fraction b of the DM compared to conventional plants (mean value of 5.73%/h), and greater effective DM degradability. The mean values for effective NDF degradability at passage rates of 2, 5 and 8%/h were 72.7% and 62.0%, 56.1% and 45.6%, and 47.1% and 37.3% for the bmr and conventional hybrids respectively. The experimental mutant hybrids showed higher values for effective CP degradability in relation to the remainder, however, the differences were more subtle in relation to those seen for DM and NDF. The results of the present work show the potential of using sorghum-sudangrass bmr hybrids in systems of ruminant production with high nutritional requirements.Deborah Alves Ferreira; Lúcio Carlos Gonçalves; JOSE AVELINO SANTOS RODRIGUES, CNPMS.FERREIRA, D. A.GONÇALVES, L. C.RODRIGUES, J. A. S.2018-05-24T00:51:33Z2018-05-24T00:51:33Z2018-05-2320182018-05-24T00:51:33Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleRevista Ciência Agronômica, Fortaleza, v. 49, n. 1, p. 141-149, jan./mar. 2018.http://www.alice.cnptia.embrapa.br/alice/handle/doc/109187210.5935/1806-6690.20180016enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2018-05-24T00:51:39Zoai:www.alice.cnptia.embrapa.br:doc/1091872Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542018-05-24T00:51:39Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing.
title Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing.
spellingShingle Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing.
FERREIRA, D. A.
Sorghum sudanense
Planta Forrageira
Ruminante
Sorghum Bicolor
title_short Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing.
title_full Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing.
title_fullStr Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing.
title_full_unstemmed Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing.
title_sort Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing.
author FERREIRA, D. A.
author_facet FERREIRA, D. A.
GONÇALVES, L. C.
RODRIGUES, J. A. S.
author_role author
author2 GONÇALVES, L. C.
RODRIGUES, J. A. S.
author2_role author
author
dc.contributor.none.fl_str_mv Deborah Alves Ferreira; Lúcio Carlos Gonçalves; JOSE AVELINO SANTOS RODRIGUES, CNPMS.
dc.contributor.author.fl_str_mv FERREIRA, D. A.
GONÇALVES, L. C.
RODRIGUES, J. A. S.
dc.subject.por.fl_str_mv Sorghum sudanense
Planta Forrageira
Ruminante
Sorghum Bicolor
topic Sorghum sudanense
Planta Forrageira
Ruminante
Sorghum Bicolor
description Greater ruminal degradability has been reported in mutant plants with brown midrib (bmr). The aim of this study was to evaluate the in situ degradability of dry matter (DM), neutral detergent fibre (NDF) and crude protein (CP) in the experimental sorghum-sudangrass bmr hybrids BR007 x Tx2784bmr and Tx635x Tx2785bmr, conventional experimental hybrids CMSxS206 x Tx2784 and Tx636 x Tx2785, and the control hybrid BRS801, harvested 51 days after planting. Three sheep with ruminal cannulae were used. The experimental design was of randomised complete blocks in subdivided lots. The mean values for DM and NDF disappearance were higher in the bmr hybrids after 6 h incubation. These plants had a higher rate of degradation (mean value of 6.93%/h) for fraction b of the DM compared to conventional plants (mean value of 5.73%/h), and greater effective DM degradability. The mean values for effective NDF degradability at passage rates of 2, 5 and 8%/h were 72.7% and 62.0%, 56.1% and 45.6%, and 47.1% and 37.3% for the bmr and conventional hybrids respectively. The experimental mutant hybrids showed higher values for effective CP degradability in relation to the remainder, however, the differences were more subtle in relation to those seen for DM and NDF. The results of the present work show the potential of using sorghum-sudangrass bmr hybrids in systems of ruminant production with high nutritional requirements.
publishDate 2018
dc.date.none.fl_str_mv 2018-05-24T00:51:33Z
2018-05-24T00:51:33Z
2018-05-23
2018
2018-05-24T00:51:33Z
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 Revista Ciência Agronômica, Fortaleza, v. 49, n. 1, p. 141-149, jan./mar. 2018.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1091872
10.5935/1806-6690.20180016
identifier_str_mv Revista Ciência Agronômica, Fortaleza, v. 49, n. 1, p. 141-149, jan./mar. 2018.
10.5935/1806-6690.20180016
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1091872
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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reponame_str Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
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repository.name.fl_str_mv Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv cg-riaa@embrapa.br
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