Evaluation of dried distillers grains with solubles as a partial replacement of barley silage or barley grain in diets for lactating dairy cows

• Author / Creator

  Zhang, Shuzhi

• Feeding value of dried distillers grains with soluble (DDGS) as an energy source for lactating dairy cows was evaluated in two studies. A diet in which barley grain was replaced by DDGS at 20% of dietary dry matter (DM) did not affect milk yield but tended to increase rumen pH compared with the control diet. Diets in which barley silage was replaced by DDGS at 20% of dietary DM increased milk yield and decreased chewing time compared with the control diet in both studies, but decreased rumen pH and milk fat concentration in the second study, and the inclusion of alfalfa hay in place of barley silage at 10% of dietary DM did not alleviate those depressions. In conclusion, DDGS can be used as an energy source as a partial replacement of barley grain or barley silage in diets for lactating dairy cows.

• Subjects / Keywords

  • Barley silage
  • Barley grain
  • DDGS

• Graduation date

  Spring 2010

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R37D6F

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.