6 research outputs found
Alternative feeds or feed additives in feedlot diets
University of Minnesota Ph.D. dissertation. March 2014. Major: Animal Sciences. Advisor: Alfredo DiCostanzo. 1 computer file (PDF); v, 70 pages.Three experiments were conducted to determine effects of feeding alternative feeds or feed additives to cattle consuming feedlot diets on diet digestibility, rumen fermentation, growth performance, and carcass characteristics. In the first experiment, effects of adding a Saccharomyces cerevisiae product (SC) to cattle fed feedlot diets on diet digestibility and rumen fermentation were examined. Results of the first experiment suggest that feeding 1.0 g SC/hd daily may result in improved rumen acetate: propionate ratio. However, feeding 1.0 g SC/hd daily reduced rumen VFA concentrations, NH3-N concentration, and pH. In the second experiment, effects of partially replacing steam flaked corn with soy glycerin and distillers grains on diet digestibility and rumen fermentation in cattle were examined. Feeding distillers grains resulted in increased rumen propionate, rumen branched-chain VFA, and total rumen VFA. Feeding glycerin resulted in increased rumen pH and rumen propionate, and decreased rumen acetate. Feeding distillers grains or glycerin caused a reduction in rumen acetate: propionate ratio. In the third experiment, effects of replacing dry rolled corn with either 20% full-fat distillers grains, or 20% or 47% reduced-fat distillers grains (equal fat concentration as inclusion of 20% full-fat distillers grains) on feedlot cattle growth performance and carcass characteristics were examined. Results from this experiment indicated that utilizing reduced-fat distillers grains in place of full-fat distillers grains or dry rolled corn does not impact animal growth performance or carcass characteristics
Antibiotic Residue Survey of Distillers Co-products for Livestock and Poultry in the Upper Midwest
Short communication: No antimicrobial effects from one source of commercial dried distillers grains with solubles
Recommended from our members
Key Considerations for the Use of Seaweed to Reduce Enteric Methane Emissions From Cattle.
Enteric methane emissions are the single largest source of direct greenhouse gas emissions (GHG) in beef and dairy value chains and a substantial contributor to anthropogenic methane emissions globally. In late 2019, the World Wildlife Fund (WWF), the Advanced Research Projects Agency-Energy (ARPA-E) and the Foundation for Food and Agriculture Research (FFAR) convened approximately 50 stakeholders representing research and production of seaweeds, animal feeds, dairy cattle, and beef and dairy foods to discuss challenges and opportunities associated with the use of seaweed-based ingredients to reduce enteric methane emissions. This Perspective article describes the considerations identified by the workshop participants and suggests next steps for the further development and evaluation of seaweed-based feed ingredients as enteric methane mitigants. Although numerous compounds derived from sources other than seaweed have been identified as having enteric methane mitigation potential, these mitigants are outside the scope of this article