Genetic and environmental influences on in vitro digestibility of alfalfa

Paolo Bani, Andrea Minuti, Marco Ligabue, M. Ligabue, F. Ruozzi

Risultato della ricerca: Contributo in rivistaArticolo in rivista

9 Citazioni (Scopus)

Abstract

To study the relationships between in vitro NDF or true dry matter digestibility (NDFD and IVTDMD) and forage fibre content, 95 alfalfa samples from 5 cultivars grown in 3 different locations and from different cuts were analysed for fibre fractions and evaluated for NDFD and IVTDMD. NDFD was mainly influenced by order of cut and age of the fields. The multifoliate cultivar controlled did not appear to differ for fibre composition and NDFD from the other ones. Fibre fractions contents explained a large part of the difference in NDFD and IVTDMD, and no significant differences in this relationships appeared for first-cut vs. aftermath forage. The best predictive equation of NDFD from fibre factions was: NDFD = 73.61 -0.62 * NDF (% DM) - 56.33 * ADL/NDF (R2=0.39). Variations in fibre content and quality do not completely explain differences in NDFD suggesting the interference of other factors that are worth to be better studied.
Lingua originaleEnglish
pagine (da-a)251-253
Numero di pagine3
RivistaITALIAN JOURNAL OF ANIMAL SCIENCE
Volume6
DOI
Stato di pubblicazionePubblicato - 2010

Keywords

  • In vitro NDF digestibility

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