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dc.contributor.advisorMcKinnon, John J.en_US
dc.creatorNair, Jayakrishnanen_US
dc.date.accessioned2014-01-18T12:00:14Z
dc.date.available2014-01-18T12:00:14Z
dc.date.created2013-12en_US
dc.date.issued2014-01-17en_US
dc.date.submittedDecember 2013en_US
dc.identifier.urihttp://hdl.handle.net/10388/ETD-2013-12-1354en_US
dc.description.abstractTwo trials were carried out to evaluate the effect of inclusion level of canola meal derived from Brassica (B.) napus and B. juncea on cattle performance and nutrient utilization. Trial 1 consisted of backgrounding (54 d) and finishing (153 d) phases. The control diet for the backgounding (BK) phase consisted of 39% barley silage, 30.4% barley grain, 22.8% brome grass hay and 7.8% supplement (DM). Treatments consisted of B. napus or B. juncea at 15 or 30% (DM) inclusion, replacing barley grain. The finishing control diet consisted of 88.3% barley grain, 4.4% barley silage and 7.3% supplement (DM). Treatments consisted of B. napus or B. juncea at 10 or 20% (DM) inclusion, replacing barley grain. During BK, dry matter intake (DMI), average daily gain (ADG), gain: feed (G:F) increased linearly (P < 0.01) as the level of inclusion of B. juncea meal increased. Cattle fed B. napus meal showed a quadratic response (P = 0.05) in DMI and linear increase (P = 0.02) in ADG with increasing inclusion. During finishing, DMI increased linearly (P = 0.05) for cattle fed B. juncea meal while a quadratic response (P = 0.02) was seen with B. napus meal. Feed efficiency and NEg content of the diet (P ≤ 0.02) decreased linearly with increasing inclusion of both meals. Trial 2 evaluated dietary rumen fermentation and total tract digestibility characteristics in a 5 x 5 Latin Square Design. Diets were similar to finishing phase of Trial 1. There was no effect of treatment on rumen pH, however a linear increase in acetate (P ≤ 0.01), ammonia (P < 0.01) and decrease (P < 0.01) in propionate was seen with both meal types. Crude protein and acid detergent fiber digestibility increased (P = 0.03) linearly with increasing inclusion of B. juncea meal. The results indicate that canola meal derived from B. napus and B. juncea is not suitable as a supplemental energy source replacing for barley grain in finishing diets but canola meal from B. juncea can be fed at levels up to 30% of the DM in backgrounding diets if priced appropriately.en_US
dc.language.isoengen_US
dc.subjectcanola mealen_US
dc.subjectB. napusen_US
dc.subjectB. junceaen_US
dc.subjectfeedlot cattleen_US
dc.subjectdigestibilityen_US
dc.titleEvaluation of canola meal derived from Brassica juncea and Brassica napus as an energy source for cattleen_US
thesis.degree.departmentAnimal and Poultry Scienceen_US
thesis.degree.disciplineAnimal 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.committeeMemberPenner, Gregory B.en_US
dc.contributor.committeeMemberLardner, H (Bart) A.en_US
dc.contributor.committeeMemberMcAllister, Timen_US
dc.contributor.committeeMemberYu, Peiqiangen_US


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