Bromatological evaluation of eleven corn cultivars harvested at two cutting heights

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dc.contributor.authorCaetano, Hamilton [UNESP]
dc.contributor.authorOliveira, Mauro Dal Secco de [UNESP]
dc.contributor.authorFreitas Júnior, José Esler de [UNESP]
dc.contributor.authorRêgo, Aníbal Coutinho do [UNESP]
dc.contributor.authorCarvalho, Marina Vieira de
dc.contributor.authorRennó, Francisco Palma
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2013-09-30T20:12:35Z
dc.date.accessioned2014-05-20T13:42:26Z
dc.date.available2013-09-30T20:12:35Z
dc.date.available2014-05-20T13:42:26Z
dc.date.issued2012-01-01
dc.description.abstractThe objective of this study was to evaluate the chemical composition and dry matter in vitro digestibility of stem, leaf, straw, cob and kernel fractions of eleven corn (Zea mays) cultivars, harvested at two cutting heights. The experiment was designed as randomized blocks, with three replicates, in a 2 × 11 factorial arrangement (eleven cultivars and two cutting heights). The corn cultivars evaluated were D 766, D 657, D 1000, P 3021, P 3041, C 805, C 333, AG 5011, FOR 01, CO 9621 and BR 205, harvested at a low cutting height (5 cm above ground) and a high cutting height (5 cm below the first ear insertion). Cutting height influenced the dry matter content of the stem fraction, which was lower (23.95%) in plants harvested at the low, than in plants harvested at the high cutting height (26.28%). The kernel fraction had the highest dry matter in vitro digestibility (85.13%), while cultivars did not differ between each other. Cob and straw were the fractions with the highest level of neutral detergent fiber (80.74 and 79.77%, respectively) and the lowest level of crude protein (3.84% and 3.69%, respectively). The leaf fraction had the highest crude protein content, both for plants of low and high cuttings (15.55% and 16.20%, respectively). The increase in the plant cutting height enhanced the dry matter content and dry matter in vitro digestibility of stem fraction, but did not affect the DM content of the leaf fraction.en
dc.description.affiliationUniversidade Estadual Paulista Departamento de Apoio, Produção e Saúde Animal
dc.description.affiliationUniversidade Estadual Paulista Departamento de Zootecnia
dc.description.affiliationUniversidade de São Paulo Faculdade de Medicina Veterinária e Zootecnia Departamento de Nutrição e Produção Animal
dc.description.affiliationUnespUniversidade Estadual Paulista Departamento de Apoio, Produção e Saúde Animal
dc.description.affiliationUnespUniversidade Estadual Paulista Departamento de Zootecnia
dc.identifierhttp://dx.doi.org/10.1590/S1516-35982012000100002
dc.identifier.citationRevista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 41, n. 1, p. 11-17, 2012.
dc.identifier.doi10.1590/S1516-35982012000100002
dc.identifier.fileS1516-35982012000100002.pdf
dc.identifier.issn1516-3598
dc.identifier.lattes0996823699631250
dc.identifier.scieloS1516-35982012000100002
dc.identifier.urihttp://hdl.handle.net/11449/14759
dc.identifier.wosWOS:000300431700002
dc.language.isoeng
dc.publisherSociedade Brasileira de Zootecnia
dc.relation.ispartofRevista Brasileira de Zootecnia
dc.relation.ispartofsjr0,337
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectForageen
dc.subjectin vitro digestibilityen
dc.subjectruminanten
dc.subjectZea maysen
dc.titleBromatological evaluation of eleven corn cultivars harvested at two cutting heightsen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/rbz/paboutj.htm
unesp.author.lattes0601409166324969
unesp.author.lattes0996823699631250
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Medicina Veterinária, Araçatubapt
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

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Artigos - Apoio, Produção e Saúde Animal - FMVA
Artigos - Zootecnia - FCAV