Research Category: Livestock

Nutritional Improvement of Corn Ethanol Co-products via Yeast Engineering

(2016)
University of Minnesota/Bo Hu

Co-products generated from corn ethanol biorefining, for instance, Distiller’s Dried Grains with Solubles (DDGS), are very attractive in animal feeds as partial replacement of some more expensive and traditional feeding materials for energy (corn), protein (soybean meal), and phosphorus (monoor di-calcium phosphate). However, variability in nutrient content and digestibility, especially the lower digestibility of most amino acids compared to corn and soybean meal, has been observed, and extra undigested nutrients are then excreted to the manure,

Read more >

Whole Corn Grain Meal Inclusion in Commercial Shrimp Feeds

(2016)
Ralco Nutrition/Jonathan Holt

The world farm production of shrimp in 2014 was 9.02 billion lbs. The estimated world consumption of feed consumed by shrimp farms was 16 – 20 billion lbs. in 2014. Wheat grain and/or by-products (e.g. wheat middlings) levels typically average around 30% of shrimp feeds. Thus, approximately 4.8 billion to 6 billion lbs. of wheat grain and/or by-products were consumed by commercial shrimp feeds in 2014. The world’s shrimp farm production is increasing by over 7%/year with the prediction to reach the size of chicken production in the future.

Read more >

DDGS Feeding Modifies Milk Composition: Investigating Impact on Cheese Quality

(2015)
Iowa State University/Stephanie Clark and Donald Beitz

Clostridium tyrobutyricum are spore-forming and butyric acid-lactate-fermenting bacteria that release large amounts of gas upon fermentation of lactose. Late blowing in cheese is unacceptable to consumers and it reduces the economic value of cheese. Appearance of splits and cracks is due to unwanted gas production during the ripening of Swiss cheese. Dairy farmers suspect feeding DDGS might be a reason for such defects in cheese. With ethanol production being a major industry in the Midwest,

Read more >

Evaluation of Long-Term Reproduction and Lactation Performance of Dairy Heifers Fed Increasing Dietary Concentrations of ReducedFat Distillers Dried Grains in Replacement of Forage During Pubertal Development

(2014)
South Dakota State University/Jill Anderson

This project is an expansion of existing research that is evaluating growth performance, rumen fermentation, total tract digestion, metabolic profile, and onset of puberty of dairy heifers fed three increasing inclusion levels of reduced-fat dried distillers grains (RF-DDGS) in replacement of forage.

In this expansion, another 12 heifers will be added to the original 36 in the experiment, to increase the statistical strength of the study for collection of long-term data. All heifers will finish the study and cease to be fed the treatment diets at approximately 11 months of age,

Read more >

Final Validation of Reduced-oil DDGS Energy Prediction Equations for Swine and Widespread Industry Implementation

(2014)
University of Minnesota/Gerald Shurson

The overall objective of this research project is to validate equations for prediction of the concentration of metabolizable energy among sources of reduced oil distillers dried grains with solubles (RO-DDGS). These well validated prediction equations will be available and can be utilized to accurately formulate diets for swine when including RO-DDGS. Availability of accurate formulation and diets will minimize current resistance among swine nutritionists when making a purchasing decision of RO-DDGS.

Read more >

Reduced-Fat Distillers Grains in Finishing Dairy Steer Diets

(2013)
University of Minnesota/Ryan Cox

U.S. feedlots have relied on supplementing their feeder cattle supply by utilizing steers and naturally sterile (Freemartin) heifers derived from the 9 million dairy cows in the U.S. In any given year, approximately 4 million dairy calves are funneled to feedlots and finished at 1,300 to 1,400 lbs. to supply the U.S. with lean, highly marbled, and tender beef cuts and ground beef. As the supply of beef-sourced feeder cattle suffers from a declining beef cow inventory,

Read more >

Evaluation of Growth Performance, Nutrient Utilization, Metabolic Profile, and Onset of Puberty in Dairy Heifers Fed Reduced-Fat Distillers Dried Grains in Replacement of Forage in Limit-Fed Rations

(2013)
South Dakota State University/Jill Anderson

The research will be used to determine how energy and protein from reduced-fat distillers grains is utilized in replacement of energy and protein from forage in limit-feeding scenarios for dairy heifers and the effects on growth, metabolic profile and onset of puberty.

Read more >

Impact of Feeding Diets Containing Reduced-Oil Distillers Dried Grains with Solubles on Growth Performance and Pork Fat Quality of Growing-Finishing Pigs

(2013)
University of Minnesota/Gerald Shurson

This project includes three experiments. The first experiment will determine the impact of feeding pigs formulated diets containing 40% reduced oil dried distillers grains with solubles (oil-DDGS). The second experiment will determine the impact of formulating diets with two sources of reduced oil-DDGS. The third experiment will be used to determine the impact of feeding diets containing wheat midds and reduced oil-DDGS. The results will be determined by growth performance and carcass characteristics.

Read more >

Adding Value to Ethanol Production Byproduct (Distillers Grain) through Production of Biochar and Bio-Oil

(2010)
United States Department of AgricultureAgricultural Research Service & University of Minnesota/Kurt Spokas, Roger Ruan and Robert Morrison

The goal of this project is to increase the value of distillers grain by sequestering carbon and producing additional renewable energy resources (bio-oil and syngas) through microwave-assisted pyrolysis. This project provides an optimized process for capturing additional bio-energy while producing a potential soil improvement agent. This project examined the potential increase in soil fertility and carbon storage of the biochar produced. The potential long-term outcomes of this research are the development and promotion of on-farm energy production using microwave-assisted pyrolysis and distillers grain as a feedstock,

Read more >