Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing.
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , |
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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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 |
eu_rights_str_mv |
openAccess |
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) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
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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1817695513622872064 |