Production of Greenhouse Gases, Ammonia, Hydrogen Sulfide, and Odorous Volatile Organic Compounds from Manure of Beef Feedlot Cattle Implanted with Anabolic Steroids

Animal production is part of a larger agricultural nutrient recycling system that includes soil, water, plants, animals and livestock excreta. When inefficient storage or utilization of nutrients occurs, parts of this cycle become overloaded. The U.S. Beef industry has made great strides in improving production efficiency with a significant emphasis on improving feed efficiency.

Cattle Performance and Comfort In Different Types of Housing Systems

monoslope beef barnThese presentations were recorded at the Beef Facilities Conference and focused on cattle comfort and performance with four different barns. The accompanying papers are in pages 27-37 of the written proceedings.

Comparing Open Lot, Partially Covered, and Monoslope (Completely Covered) Systems

Robbi Pritchard, South Dakota State University (SDSU)

When SDSU rebuilt their cattle feeding facilities, the decision was made to compare three different systems: 

  • earthen lots with no overhead roof
  • lots that are partially roofed
  • a monoslope bedded barn in which the entire facility is covered

The feedlot manager tracked feed deliveries, cattle performance, carcass characteristics, and labor inputs for each system for two years.…

Frank Wideman


Frank Wideman is a Natural Resources Engineering Specialist with the University of Missouri Extension.  He specializes in natural resource management, water quality, farm and home energy and emerging technologies.  He includes GIS, GPS, and Remote Sensing in all those areas.  He also utilizes distance education, social media, and community resource management to develop these programs.  …

Estimation of Ammonia Emissions from Beef Cattle Feedyards in the Southern High Plains with Process-Based Models

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Why Is It Important to Validate Models?

Beef cattle are responsible for around 15% of the total anthropogenic ammonia (NH3) emitted in the U.S., and the cattle feeding industry is highly concentrated spatially, with the majority of commercial feedyards located in Texas, Iowa, Kansas,Colorado, and Nebraska (USEPA, 2005; USDA-NASS, 2009).…

Effects of Corn Processing Method and Dietary Inclusion of Wet Distillers Grains with Solubles (WDGS) On Enteric Methane Emissions of Finishing Cattle

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The use of wet distiller’s grains with solubles (WDGS) in feedlot diets has increased as a result of the growing U.S. ethanol industry.  However, few studies have evaluated the use of WDGS in finishing diets based on steam-flaked corn (SFC), the processing method used extensively in the Southern Great Plains. …