Chemical composition and digestibility of sugarcane harvested at two periods of the year

de Carvalho M.V., Rodrigues P.H.M., Lima M.L.P., dos ANJOS I.A., Landell M.G.A., dos Santos M.V. and Prada e Silva L.F. (2010) Chemical composition and digestibility of sugarcane harvested at two periods of the year. Brazilian Journal of Veterinary Research and Animal Science, 47 4: 298-306. doi:10.11606/issn.1678-4456.bjvras.2010.26829


Author de Carvalho M.V.
Rodrigues P.H.M.
Lima M.L.P.
dos ANJOS I.A.
Landell M.G.A.
dos Santos M.V.
Prada e Silva L.F.
Title Chemical composition and digestibility of sugarcane harvested at two periods of the year
Translated title Composição bromatológica e digestibilidade de cana-de-açúcar colhida em duas épocas do ano
Language of Title por
Journal name Brazilian Journal of Veterinary Research and Animal Science   Check publisher's open access policy
Language of Journal Name eng
ISSN 1413-9596
Publication date 2010-01-01
Sub-type Article (original research)
DOI 10.11606/issn.1678-4456.bjvras.2010.26829
Open Access Status DOI
Volume 47
Issue 4
Start page 298
End page 306
Total pages 9
Place of publication Sao Paulo, Brazil
Publisher Universidade de Sao Paulo * Faculdade de Medicina Veterinaria e Zootecnia
Language por
Formatted abstract
The objectives of this study were to evaluate the effect of time of harvest on chemical composition and in vitro digestibility of sugarcane genotypes, to compare chemical composition and in vitro digestibility of the stem and leaf fractions, and to determine possible correlations between chemical composition and in vitro digestibility of the whole plant in sugarcane genotypes. Nine genotypes were harvested in May and September of 2006. In May, only the whole-plant fraction was analyzed, in September the genotypes were separated in stems, leaves or whole-plant for determination of chemical composition, sucrose (POL) and in vitro digestibility. Stems had lower neutral detergent fiber (NDF) and lignin in the DM, and greater in vitro dry matter digestibility (IVDMD) than leaves. However, stems had lower in vitro NDF digestibility (IVNDFD), higher lignin in the NDF and lower crude protein (CP). The NDF and IVNDFD were reduced with advanced maturity, while IVDMD, POL and lignin were increased. IVDMD was negatively correlated with NDF and NDF/POL, however there was no correlation between IVFDND and NDF or NDF/POL. It can be concluded that with the advance in maturity the IVNDFD was reduced and IVDMD was increased, and there was no genetic correlation between accumulation of sugar and in vitro fiber digestibility. Data from this study indicate that it is not expected that selection of genotypes with greater stem IVNDFD would alter the sugar content of the plant.
Keyword Fiber
Lignin
Saccharum officinarum
Stems
Sugar
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Alliance for Agriculture and Food Innovation
 
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Created: Fri, 17 Mar 2017, 14:37:28 EST by Luis Prada E Silva on behalf of Learning and Research Services (UQ Library)