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Intraruminal administration of two doses of quebracho tannins to sheep: effect on rumen degradation and total tract digestibility, faecal recovery and toxicity

AutorHervás, Gonzalo ; Frutos, Pilar ; Ramos, Graciano; Giráldez, Francisco Javier ; Mantecón, Ángel R.
Palabras claveCondensed tannins
Digestibility
Quebracho
Rumen degradation
Sheep
Fecha de publicación2004
EditorPolish Academy of Sciences
CitaciónJournal of Animal and Feed Sciences 13(1): 111-120 (2004)
ResumenNine rumen fistulated ewes fed lucerne hay were intra-ruminally dosed for a period of 51 days with 0 (Q0), 35 (Q1) and 70 (Q2) g of quebracho condensed tannin (CT) extract/kg feed daily. Lucerne hay in situ DM, N and NDF 24 h disappearance were significantly lower (P<0.05) in those sheep dosed with the highest level of quebracho extract (Q2) compared with the other two groups (Q0 and Q1). The rumen ammonia-N concentration was also lower in groups treated with quebracho. Neither of the doses affected in vivo DM, NDF or ADF digestibility. However, both reduced apparent CP digestibility (P<0.01). Faecal analyses showed a 30% recovery of the administered CT, regardless of the dose (P>0.10). There were no signs of intoxication by tannins in any of the treatments.
Descripción10 pages, 2 tables.
Previously published as proceeding at the XXXIII Jornadas de Estudio AIDA (IX Jornadas sobre Producción Animal). ITEA Vol. Extra 22 (Zaragoza, Spain, Apr 25-27, 2001). https://digital.csic.es/handle/10261/13887
Versión del editorhttp://library.wur.nl/WebQuery/catalog/55006?wq_sfx=lang
URIhttp://hdl.handle.net/10261/13060
ISSN1230-1388
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