title: [Food conversion in the digestive system of juvenile bulls. 3. Rumen liquor investigations].
abstract: Two bulls with a permanent rumen fistula and a re-entrant cannula at the duodenum were fed various concentrates and straw (dry matter ration composition: 60% concentrate, 40% straw). Negative correlations were found between the pH value and total fatty acid concentration (r = -0.70). The animals were given the straw one hour before the concentrate. The pH value increased to not more than 7.3 one hour after they had received the straw. It did not drop below 6.4 after the concentrate with any of the rations. The addition of dried sugar beet pulp to the rations leads to a higher mean acetate concentration than the other rations and causes an unvarying high total fatty acid concentration.
authors.affiliation: Institut für umweltgerechte Tierhaltung, Universität Rostock, Germany.
authors.forename: H J
authors.initials: HJ
authors.lastname: Alert
authors.forename: S
authors.initials: S
authors.lastname: Poppe
authors.forename: R
authors.initials: R
authors.lastname: al-Munajed
mesh_terms: D000821:Animal Feed; D000818:Animals; D002417:Cattle; D004063:Digestion; D004386:Duodenum / Q000502:physiology / Q000601:surgery; D005227:Fatty Acids / Q000032:analysis; D005402:Fistula; D005766:Gastrointestinal Contents; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008297:Male; D012417:Rumen / Q000502:physiology* / Q000601:surgery; D013997:Time Factors
chemical_list: D005227:Fatty Acids
vernacular_title: Untersuchungen über Nährstoffumsetzungen im Verdauungstrakt von Jungbullen. 3. Mitteilung-Pansensaftuntersuchungen.