Nutrient utilization, nutrient excretion and greenhouse gas emissions from cattle during the overwintering period

Supplementing forage diets with dried distillers grains in cold-stressed environment


Team:

Project Leaders:  Dr. Kim Ominski, Dept. Animal Science, Email: k_ominski@umanitoba.ca, Dr. Denis Krause, Dept. Animal Science,  Dr. Mario Tenuta, Dept. Soil Science, Email: tenutam@cc.umanitoba.ca
Co-Investigators: Karin Wittenberg (U of M), Ermias Kebreab (UCD), Kees Plaizier (U of M), Don Flaten (U of M)
Graduate Students: Jennilee Bernier, Dept. Animal Science (MSc candidate), Gwendolyn Donohoe, Dept. Soil Science (MSc candidate)

Funding:

MRAC, MITACS, BCRC, MCPA and MSAPP

Goal:

  • To better predict the impact of supplementing low quality forage diets with DDGs and cold stress on beef cow performance, nutrient release, pathogen survival and net greenhouse gas emissions
  • To identify the most suitable method for delivering protein supplements such as DDGs

Objectives:

How do feed quality, method of protein delivery (as dried distillers grains solubles (DDGS)) and cold stress affect:

  • nutrient utilization by cattle based on fermentation efficiency and nutrient excretion
  • enteric methane emissions as well as methane and nitrous oxide emissions from cattle excreta
  • structure and function of the rumen microbial community
  • pathogen shedding