Comparison of analyses to predict ruminal fibre degradability and indigestible fibre in temperate grass silages

JANČÍK, Filip, KOUKOLOVÁ, Veronika, HOMOLKA, Petr andf HAMAN, Jiří. Comparison of analyses to predict ruminal fibre degradability and indigestible fibre in temperate grass silages. South African Journal of Animal Science, 2011, 41, 297-308. ISSN 0375-1589.
Year2011
CathegoryScientific publication in impacted journals
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Abstract

The objectives of this study were to compare the ruminal degradability of neutral detergent fibre (NDF) and indigestible NDF (INDF) between silages (n = 24) originated from three different grass species, Dactylis glomerata L.; Festuca arundinacea L. and hybrid Felina – Lolium multiflorum L. × Festuca arundinacea S., and to create prediction equations for effective degradability of NDF (EDNDF), assuming ruminal solid outflow rates of 0.02 (low), 0.05 (medium) and 0.08/h (high), and INDF. The highest values for the potentially degradable fraction of NDF (b), EDNDF2, EDNDF5 and EDNDF8 (874, 560, 366 and 272 g/kg NDF, respectively) and the lowest for INDF (73.1 g/kg DM) were found for F. arundinacea. These parameters were significantly different from the hybrid, Felina, which presented the lowest rate of NDF degradation (c), EDNDF5 and EDNDF8 (0.033/h, 341 and 250 g/kg NDF, respectively).