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dc.contributor.advisorChristensen, David A.en_US
dc.creatorAbeysekara, Abeysekara Wannaku Arachchige Samanen_US
dc.date.accessioned2003-10-31T17:08:20Zen_US
dc.date.accessioned2013-01-04T05:07:29Z
dc.date.available2004-11-03T08:00:00Zen_US
dc.date.available2013-01-04T05:07:29Z
dc.date.created2003-09en_US
dc.date.issued2003-09-17en_US
dc.date.submittedSeptember 2003en_US
dc.identifier.urihttp://hdl.handle.net/10388/etd-10312003-170820en_US
dc.description.abstractThree studies were conducted to evaluate the nutritional value of different oat (Avena sativa) forage cultivars (Assiniboia, Bell and Baler) that were newly emerged cultivars as a result of extensive oat growing conditions in western Canada. A total tract digestibility trial using 24 sheep (n=6) in a completely random design was conducted to assess apparent digestibility of dry matter (DM), organic matter (OM), crude protein (CP), crude fat (EE), acid detergent fiber (ADF), neutral detergent fiber (NDF), hemicellulose, non-structural carbohydrate, acid detergent lignin (ADL), soluble crude protein (SCP), non-protein nitrogen (NPN) and neutral detergent insoluble crude protein (NDICP) in Assiniboia silage, Bell hay, Baler hay and Rosser (barley- Hordeum vulgare) silage. Rumen in situ degradability characteristics of DM, OM, CP, ADF and NDF were determined on Assiniboia silage, Bell hay, Baler hay and Rosser silage at 96 to 0 h using a Holstein cow fitted with a rumen fistula. A dairy production trial using 8 multiparous Holstein cows at 90±20 DIM averaging 41 kg d-1 milk yield, in a 2 × 3 switch-back design was conducted to compare the production response of the cows fed either 48 percent Assiniboia silage or Rosser silage (DM basis) in total mixed rations with the concentrate portion consisting mainly of rolled barley, canola meal and soy meal. Digestibility of DM, OM, NDF, NPN, NDICP and EE were not different for Assiniboia and Rosser silages. Digestibility of DM, NDF and ADF were similar for Baler hay and Rosser silage. Digestibility of hemicellulose, NSC and ADL were similar for all forages. Sheep voluntary intakes of DM, OM, NDF, ADF and EE, except CP were similar across the forages. Assiniboia silage provided more nutrients to the rumen than the hays due to the higher rumen disappearance and effective degradabilities of DM and CP, and lesser undegradable DM, CP, NDF and ADF (Pen_US
dc.language.isoen_USen_US
dc.subjectcultivaren_US
dc.subjectdigestibilityen_US
dc.subjecttotal mixed rationen_US
dc.subjectdairyen_US
dc.subjectoatsen_US
dc.subjectAssiniboiaen_US
dc.subjectRosseren_US
dc.titleThe nutritional value of oat forages for dairy cowsen_US
thesis.degree.departmentAnimal and Poultry Scienceen_US
thesis.degree.disciplineAnimal and Poultry Scienceen_US
thesis.degree.grantorUniversity of Saskatchewanen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Science (M.Sc.)en_US
dc.type.materialtexten_US
dc.type.genreThesisen_US
dc.contributor.committeeMemberMcKinnon, John J.en_US
dc.contributor.committeeMemberLaarveld, Bernarden_US
dc.contributor.committeeMemberJeranyama, Peter G.en_US
dc.contributor.committeeMemberSoita, Henry W.en_US


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