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Research Project: Integrated Management Regimens That Minimize the Environmental Impact of Livestock Manure

Location: Renewable Energy and Manure Management Research

Project Number: 6209-12310-002-00
Project Type: Appropriated

Start Date: Oct 01, 2000
End Date: Apr 02, 2005

Objective:
Develop management practices to reduce losses of nitrogen and phosphorus to the environment including modification of animal diets and application strategies for effective use of manure on cropland and rangeland. Develop nutritional and management strategies and land application protocols that decrease atmospheric emissions of ammonia, odor, and particulates. Determine the survival and transport of pathogens from livestock manures and feeding facilities. Determine the influence of feeding distillers grains on animal performance, nutrient excretion, and pathogen excretion.

Approach:
An integrated approach to solve the objectives is used by considering all aspects of the manure cycle from the diets fed to the effects on soil, water and plants after land applications of manure. Atmospheric emissions and pathogen survivability will be determined in each phase of the manure cycle. Studies will be conducted at cooperating commercial feeding operations, in our research feedlot, in laboratory-scale systems, and during storage, treatment and application of manure to land. The effect of different diets and feeding regimes on ruminant nutrient excretion and emissions of ammonia, odors, and (or) particulates will be measured in digestion and feeding trials. The effects of nitrogen-based and phosphorus-based manure and compost applications rates, and the effects of long-term application of manure on agronomic and soil properties will be measured for both cropland and rangeland. The effects of manure treatment and handling on population of viable pathogens/toxins will be determined. Factors affecting ammonia emissions (and possibly other gases such as methane and nitrous oxide) from feedyards will be determined using lab-scale chambers and micrometeorological techniques. The effects of distillers grains on cattle performance and pathogen excretion will be determined in cattle growth trials and nutrient utilization will be determined using in situ and continuous culture techniques.

 
Project Team
Cole, Noel - Andy
Clark, Ray - Nolan
Rice, William - Bill
Purdy, Charles - Bill
Todd, Richard - Rick

Project Annual Reports
  FY 2003
  FY 2002
  FY 2001

Publications

Related National Programs
  Manure and Byproduct Utilization (206)

Related Projects
   INFLUENCE OF PROTEIN NUTRITION & GRAIN PROCESSING ON NITROGEN AND PHOSPHORUS METABOLISM IN CATTLE
   INFLUENCE OF PROTEIN AND PHOSPHORUS NUTRITION OF BEEF CALVES ON METABOLISM AND AMMONIA EMISSIONS
   INTEGRATED BEEF CATTLE AND CROPPING SYSTEMS FOR THE HIGH PLAINS
   CONGRESSIONAL AIR QUALITY INITIATIVE: AMMONIA CONCENTRATIONS IN BEEF CATTLE FEEDYARDS
   EFFECT OF DRY DISTILLERS GRAINS ON NUTRIENT METABOLISM OF BEEF CATTLE AND SWINE
   EFFECT OF DISTILLERS GRAINS ON PERFORMANCE OF BEEF AND DAIRY CATTLE

 
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