Ruminal degradability of dry matter and neutral detergent fibre of grasses

F. Jančík, V. Koukolová and P. Homolka
Additional contact information
F. Jančík: Institute of Animal Science, Prague-Uhříněves, Czech Republic
V. Koukolová: Institute of Animal Science, Prague-Uhříněves, Czech Republic
P. Homolka: Institute of Animal Science, Prague-Uhříněves, Czech Republic

Czech Journal of Animal Science, 2010, vol. 55, issue 9, 359-371

Abstract: A study was conducted (I) to determine rumen degradability (in sacco) of dry matter (DM) and neutral detergent fibre (NDF) of the most important grass species grown in the Czech Republic, (II) to compare grass species (n = 5) according to calculated degradation parameters, and (III) to establish prediction equations for degradation parameters from chemical composition. Forty samples of the most important grass species (Dactylis glomerata, Phleum pratense, Lolium perenne, Festuca arundinacea, Felina hybrid) were harvested in 2004 and 2005 and analyzed for chemical composition, and DM and NDF in sacco degradability. Results from the in sacco method were used to calculate DM and NDF degradation parameters. Linear and stepwise multiple regression analyses were used to develop prediction equations for DM and NDF degradation parameters from nutrient concentrations. The highest DM and NDF degradation parameters were found for Lolium perenne. DM and NDF rumen degradation parameters were successfully predicted from chemical composition, with a single predictor adequate for most parameters. For all parameters R2-values increased with addition of more predictors into regression equations. Effective degradability (ED) of DM calculated at a rumen outflow rate (k) of 0.05 h-1 was the best predicted by NDF (R2 = 0.878), and ED of NDF at k = 0.02 h-1 by crude protein (CP) (R2 = 0.653).

Keywords: rumen degradation parameters; dry matter; neutral detergent fibre; in sacco method; prediction equations (search for similar items in EconPapers)
Date: 2010
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://cjas.agriculturejournals.cz/doi/10.17221/211/2009-CJAS.html (text/html)
http://cjas.agriculturejournals.cz/doi/10.17221/211/2009-CJAS.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjs:v:55:y:2010:i:9:id:211-2009-cjas

DOI: 10.17221/211/2009-CJAS

Access Statistics for this article

Czech Journal of Animal Science is currently edited by Bc. Michaela Polcarová

More articles in Czech Journal of Animal Science from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().