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

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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Bibliographic Details
Main Authors: FERREIRA, D. A., GONÇALVES, L. C., RODRIGUES, J. A. S.
Other Authors: Deborah Alves Ferreira; Lúcio Carlos Gonçalves; JOSE AVELINO SANTOS RODRIGUES, CNPMS.
Format: Artigo de periódico biblioteca
Language:English
eng
Published: 2018-05-23
Subjects:Sorghum sudanense, Planta Forrageira, Ruminante, Sorghum Bicolor,
Online Access:http://www.alice.cnptia.embrapa.br/alice/handle/doc/1091872
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spelling dig-alice-doc-10918722018-05-24T00:51:39Z Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing. FERREIRA, D. A. GONÇALVES, L. C. RODRIGUES, J. A. S. Deborah Alves Ferreira; Lúcio Carlos Gonçalves; JOSE AVELINO SANTOS RODRIGUES, CNPMS. Sorghum sudanense Planta Forrageira Ruminante Sorghum Bicolor 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. 2018-05-24T00:51:33Z 2018-05-24T00:51:33Z 2018-05-23 2018 2018-05-24T00:51:33Z Artigo de periódico 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 en eng openAccess
institution EMBRAPA
collection DSpace
country Brasil
countrycode BR
component Bibliográfico
access En linea
databasecode dig-alice
tag biblioteca
region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language English
eng
topic Sorghum sudanense
Planta Forrageira
Ruminante
Sorghum Bicolor
Sorghum sudanense
Planta Forrageira
Ruminante
Sorghum Bicolor
spellingShingle Sorghum sudanense
Planta Forrageira
Ruminante
Sorghum Bicolor
Sorghum sudanense
Planta Forrageira
Ruminante
Sorghum Bicolor
FERREIRA, D. A.
GONÇALVES, L. C.
RODRIGUES, J. A. S.
Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing.
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.
author2 Deborah Alves Ferreira; Lúcio Carlos Gonçalves; JOSE AVELINO SANTOS RODRIGUES, CNPMS.
author_facet Deborah Alves Ferreira; Lúcio Carlos Gonçalves; JOSE AVELINO SANTOS RODRIGUES, CNPMS.
FERREIRA, D. A.
GONÇALVES, L. C.
RODRIGUES, J. A. S.
format Artigo de periódico
topic_facet Sorghum sudanense
Planta Forrageira
Ruminante
Sorghum Bicolor
author FERREIRA, D. A.
GONÇALVES, L. C.
RODRIGUES, J. A. S.
author_sort FERREIRA, D. A.
title Ruminal degradability of brown-midrib sorghum-sudangrass hybrids for cutting and grazing.
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.
publishDate 2018-05-23
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1091872
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