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Effects of feeding a high-fiber byproduct feedstuff as a substitute for barley grain in the diets of dairy cows in early lactation Open Access


Other title
Barley grain
Early lactation
Type of item
Degree grantor
University of Alberta
Author or creator
Supervisor and department
Masahito Oba(Agricultural, Food and Nutritional Science)
Examining committee member and department
Scott Jeffrey(Resource Economics and Environmental Sociology)
Tom McFadden(Agricultural, Food and Nutritional Science)
Department of Agricultural, Food, and Nutritional Science

Date accepted
Graduation date
Master of Science
Degree level
The objective of this study was to evaluate effects of using wheat dried distillers’ grains with solubles (DDGS) to replace barley grain in the diet on dry matter intake (DMI), milk production and rumen fermentation of early lactation dairy cows. Sixty-one Holstein cows including thirteen ruminally-cannulated cows were fed diets containing either barley grain or wheat DDGS at 17% of dietary dry matter for 12 weeks after calving. The hypothesis was that reducing dietary starch content by using DDGS would increase rumen pH, DMI, and milk production of early lactation cows. However, cows fed DDGS did not have higher rumen pH, DMI, or milk production, and tended to have higher plasma non-esterified fatty acid concentration. Wheat DDGS can be used as a partial substitute for grain in the diets of early lactation cows without affecting milk production, but it may be associated with the risk of exacerbating their energy balance.
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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