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Article: Feeding value of glycerol as a replacement for corn grain in rations fed to lactating dairy cows
- Article from:
- Journal of Dairy Science
- Article date:
- October 1, 2009
- Author:
CopyrightCopyright American Dairy Science Association Oct 2009. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
Growth of the corn ethanol industry has created a need for alternatives to corn for lactating dairy cows. Concurrent expansion in soydiesel production is expected to increase availability and promote favorable pricing for glycerol, a primary co-product material. The objective of this study was to determine the feeding value of glycerol as a replacement for corn in diets fed to lactating dairy cattle. Sixty lactating Holstein cows housed in individual tie stalls were fed a base diet consisting of corn silage, legume forages, corn grain, soyhulls, roasted soybeans, and protein supplements. After a 2-wk acclimation period, cows were fed diets containing 0, 5, 10, or 15% refined ...