Effects of condensed tannins in fresh sainfoin (Onobrychis viciifolia) on in vivo and in situ digestion in sheep

Autor: Irene Mueller-Harvey, Elisabetta Stringano, Jocelyne Aufrere, René Baumont, Aline Le Morvan, Katerina Theodoridou, Donato Andueza, J. Pourrat
Přispěvatelé: Unité de Recherches sur les Herbivores (URH), Institut National de la Recherche Agronomique (INRA), University of Reading (UOR)
Jazyk: angličtina
Rok vydání: 2010
Předmět:
Zdroj: Animal Feed Science and Technology
Animal Feed Science and Technology, Elsevier Masson, 2010, 160 (1-2), pp.23-38. ⟨10.1016/j.anifeedsci.2010.06.007⟩
ISSN: 0377-8401
DOI: 10.1016/j.anifeedsci.2010.06.007⟩
Popis: International audience; This study focused on effects of structure, content and biological activity of condensed tannins (CT) in leaves, stems and whole plant of sainfoin (Onobrychis viciifolia) on its in vivo and in situ digestive characteristics in sheep. Sainfoin was studied as fresh forage during the first vegetation cycle at two phenological stages (i.e., end of flowering and green seeds) and during the second vegetation cycle (i.e., start of flowering). The feeding experiment used 12 sheep; with six dosed, through the rumen cannula, with polyethylene glycol (PEG) to neutralise CT effects. Organic matter digestibility (OMD), total tract N disappearance and N balance were measured in sheep fed the whole plant. The residues of dry matter (DM) and N from nylon bags suspended in the rumen were determined on leaves and stems. Intestinal digestibility was measured using other, intestinally fistulated sheep. PEG addition and vegetation cycle increased total tract N digestibility (P
Databáze: OpenAIRE