title: Influence of aFusarium culmorum inoculation of wheat onin sacco dry matter degradation of wheat straw and wheat chaff.
abstract: The aim of this study was to investigate the effect of aFusarium culmorum inoculation of wheat on thein sacco dry matter degradation (DG) of wheat straw and wheat chaff in dairy cows. The ruminal disappearance of dry matter was measured with thein situ nylon bag technique. Samples of wheat straw and wheat chaff from non-inoculated andFusarium-inoculated wheat were used to examine the ruminal dry matter degradability. Samples were subjected to ruminal incubation in two dairy cous fitted with a permanent rumen fistula and incubated for 4, 8, 16, 24, 48, 72, 96 and 120 h. To describe the degradation kinetics, the equation by Ørskov and McDonald (1979) was used. DG rates obtained for contaminates straw and chaff were higher compared to the corresponding rates of the non-contaminated samples, which is assumed to be due to the activity of fungal enzymes. It can be concluded that an infection of wheat withF. culmorum may have an influence on the dry matter degradation of straw and chaff.
authors.affiliation: Institute of Animal Nutrition, Federal Agricultural Research Centre (FAL), Bundesallee 50, D-38116, Braunschweig, ute brinkmeyer@fa.de.
authors.forename: U
authors.initials: U
authors.lastname: Brinkmeyer
authors.forename: S
authors.initials: S
authors.lastname: Dänicke
authors.forename: M
authors.initials: M
authors.lastname: Lehmann
authors.forename: P
authors.initials: P
authors.lastname: Lebzien
authors.forename: H
authors.initials: H
authors.lastname: Valenta
authors.forename: G
authors.initials: G
authors.lastname: Flachowsky