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Effects of supplemented NSP-degrading enzymes on nutrient digestibility of diets containing co-products fed to grower pigs Open Access


Other title
enzymes, wheat millrun, DDGS
Type of item
Degree grantor
University of Alberta
Author or creator
Shrestha, Dharma Raj
Supervisor and department
Dr. Ruurd T. Zijlstra, Department of Agricultural, Food and Nutritional Science
Examining committee member and department
Dr. Eduardo Beltranena, Alberta Agriculture and Rural Development
Dr. Sven Anders, Department of Resource Economics and Environmental Sociology
Department of Agricultural, Food, and Nutritional Science

Date accepted
Graduation date
Master of Science
Degree level
Corn distillers dried grains with solubles (DDGS) and wheat millrun are co-products from the ethanol and dry milling industries characterized by high non-starch polysaccharides (NSP) content that limit nutrient digestibility of co-products, which could be improved by supplementation of NSP-degrading enzymes. Nutrient digestibility of diets containing co-products with supplemented NSP-degrading enzymes was evaluated in 3 experiments. Supplemental NSP-degrading enzymes did not increase the nutrient digestibility of corn DDGS- and wheat millrun-based diets (P > 0.10) however, feed enzymes increased (P < 0.01) the apparent ileal digestibility (AID), apparent total tract digestibility (ATTD) of energy, AID and ATTD of NSP and standardized ileal digestibility (SID) of crude protein in a wheat grain diet including 40% wheat millrun. Furthermore, these enzymes increased (P < 0.05) the SID of Arg, His, Trp, Cys, Glu, Gly and Ser. In conclusion, supplementing NSP-degrading enzymes increased the limited energy, protein, and AA digestibility in wheat millrun.
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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