Forage yield and nutritive value of Panicum maximum genotypes in the Brazilian savannah
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | https://www.revistas.usp.br/sa/article/view/78533 |
Resumo: | The narrow genetic variability of grasslands and the incidence of new biotic and abiotic stresses have motivated the selection of new Panicum maximum genotypes for use as forage for beef cattle in the Brazilian savannah. This study aimed to evaluate forage yield and nutritive value of P. maximum genotypes including 14 accessions (PM30 to PM43), four intraspecific hybrids (PM44 to PM47) and six cultivars (Aruana, Massai, Milênio, Mombaça, Tanzania and Vencedor), examining 24 genotypes over two years (2003 and 2004). Milênio cultivar was the genotype with the highest dry matter yield (DMY) in both years (18.4 t ha-1 and 20.9 t ha-1, respectively) although it presented a high proportion of stems (~ 30%). Genotypes that showed higher Leaf DMY in both years were the accession PM34 (14.7 t ha-1) and the hybrid PM46 (14.0 t ha-1), while Mombaça and Tanzania yielded 12.5 and 11.0 t ha-1, respectively. Leaf organic matter digestibility and leaf DMY for PM40 and PM46 genotypes exceeded the mean (>; 656 g kg-1 and >; 11.7 t ha-1, respectively). For this reason, PM40 and PM46 can be considered promising P. maximum genotypes for use as forage for grazing systems in the Brazilian savannah. |
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Forage yield and nutritive value of Panicum maximum genotypes in the Brazilian savannah The narrow genetic variability of grasslands and the incidence of new biotic and abiotic stresses have motivated the selection of new Panicum maximum genotypes for use as forage for beef cattle in the Brazilian savannah. This study aimed to evaluate forage yield and nutritive value of P. maximum genotypes including 14 accessions (PM30 to PM43), four intraspecific hybrids (PM44 to PM47) and six cultivars (Aruana, Massai, Milênio, Mombaça, Tanzania and Vencedor), examining 24 genotypes over two years (2003 and 2004). Milênio cultivar was the genotype with the highest dry matter yield (DMY) in both years (18.4 t ha-1 and 20.9 t ha-1, respectively) although it presented a high proportion of stems (~ 30%). Genotypes that showed higher Leaf DMY in both years were the accession PM34 (14.7 t ha-1) and the hybrid PM46 (14.0 t ha-1), while Mombaça and Tanzania yielded 12.5 and 11.0 t ha-1, respectively. Leaf organic matter digestibility and leaf DMY for PM40 and PM46 genotypes exceeded the mean (>; 656 g kg-1 and >; 11.7 t ha-1, respectively). For this reason, PM40 and PM46 can be considered promising P. maximum genotypes for use as forage for grazing systems in the Brazilian savannah. Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2014-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/7853310.1590/S0103-90162014000100003Scientia Agricola; v. 71 n. 1 (2014); 23-29Scientia Agricola; Vol. 71 Núm. 1 (2014); 23-29Scientia Agricola; Vol. 71 No. 1 (2014); 23-291678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/78533/82588Copyright (c) 2015 Scientia Agricolainfo:eu-repo/semantics/openAccessFernandes, Francisco DuarteRamos, Allan Kardec BragaJank, LianaCarvalho, Marcelo AyresMartha Jr., Geraldo BuenoBraga, Gustavo José2014-04-02T20:07:56Zoai:revistas.usp.br:article/78533Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2014-04-02T20:07:56Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Forage yield and nutritive value of Panicum maximum genotypes in the Brazilian savannah |
title |
Forage yield and nutritive value of Panicum maximum genotypes in the Brazilian savannah |
spellingShingle |
Forage yield and nutritive value of Panicum maximum genotypes in the Brazilian savannah Fernandes, Francisco Duarte |
title_short |
Forage yield and nutritive value of Panicum maximum genotypes in the Brazilian savannah |
title_full |
Forage yield and nutritive value of Panicum maximum genotypes in the Brazilian savannah |
title_fullStr |
Forage yield and nutritive value of Panicum maximum genotypes in the Brazilian savannah |
title_full_unstemmed |
Forage yield and nutritive value of Panicum maximum genotypes in the Brazilian savannah |
title_sort |
Forage yield and nutritive value of Panicum maximum genotypes in the Brazilian savannah |
author |
Fernandes, Francisco Duarte |
author_facet |
Fernandes, Francisco Duarte Ramos, Allan Kardec Braga Jank, Liana Carvalho, Marcelo Ayres Martha Jr., Geraldo Bueno Braga, Gustavo José |
author_role |
author |
author2 |
Ramos, Allan Kardec Braga Jank, Liana Carvalho, Marcelo Ayres Martha Jr., Geraldo Bueno Braga, Gustavo José |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Fernandes, Francisco Duarte Ramos, Allan Kardec Braga Jank, Liana Carvalho, Marcelo Ayres Martha Jr., Geraldo Bueno Braga, Gustavo José |
description |
The narrow genetic variability of grasslands and the incidence of new biotic and abiotic stresses have motivated the selection of new Panicum maximum genotypes for use as forage for beef cattle in the Brazilian savannah. This study aimed to evaluate forage yield and nutritive value of P. maximum genotypes including 14 accessions (PM30 to PM43), four intraspecific hybrids (PM44 to PM47) and six cultivars (Aruana, Massai, Milênio, Mombaça, Tanzania and Vencedor), examining 24 genotypes over two years (2003 and 2004). Milênio cultivar was the genotype with the highest dry matter yield (DMY) in both years (18.4 t ha-1 and 20.9 t ha-1, respectively) although it presented a high proportion of stems (~ 30%). Genotypes that showed higher Leaf DMY in both years were the accession PM34 (14.7 t ha-1) and the hybrid PM46 (14.0 t ha-1), while Mombaça and Tanzania yielded 12.5 and 11.0 t ha-1, respectively. Leaf organic matter digestibility and leaf DMY for PM40 and PM46 genotypes exceeded the mean (>; 656 g kg-1 and >; 11.7 t ha-1, respectively). For this reason, PM40 and PM46 can be considered promising P. maximum genotypes for use as forage for grazing systems in the Brazilian savannah. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-02-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/78533 10.1590/S0103-90162014000100003 |
url |
https://www.revistas.usp.br/sa/article/view/78533 |
identifier_str_mv |
10.1590/S0103-90162014000100003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/78533/82588 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2015 Scientia Agricola info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2015 Scientia Agricola |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
dc.source.none.fl_str_mv |
Scientia Agricola; v. 71 n. 1 (2014); 23-29 Scientia Agricola; Vol. 71 Núm. 1 (2014); 23-29 Scientia Agricola; Vol. 71 No. 1 (2014); 23-29 1678-992X 0103-9016 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1800222792022491136 |