Total and water-soluble phosphorus excretion from swine fed low-phytate soybeans
January 1, 2004
A study was conducted to evaluate the impact of feeding soybean meal (SBM) from low-phytate (LP) or traditional phytate (TP) soybeans on performance and excretions from growing swine. Ninety-six...
Kinetics of ammonia removal in a pilot-scale biofilter
January 1, 2004
A mobile, skid-mounted biofilter was designed and built to determine the kinetics of ammonia oxidation at a modern 2400-sow farrow-to-wean unit. The biofilter system consisted of a variable-speed...
Soil Column Testing for Nutrient Reduction in Partially Treated Swine Manure
January 1, 2004By Jian Xiao
Liquid swine manure, pre-treated by physical and chemical methods to precipitate phosphorus and remove suspended solids, was applied to a series of soil columns. The soil columns simulated proposed...
Synthetic covers for emissions control from earthen embanked swine lagoons – part II: Negative pressure lagoon cover
January 1, 2004
One of the significant odor sources on swine farms is manure storage. This study investigated reducing odor and gas emissions from a 29- x 39-m anaerobic swine lagoon by capturing gases beneath a...
Conversion of Hog Manure to Diesel Fuel
January 1, 2004By Alfred Tiller
The process defined in objective one above needs further elucidation to
clarify any misunderstandings that might occur. During the past few years we
discovered that ag-waste, particularly animal...
Emissions of N2O and CH4 during the composting of liquid swine manure
January 1, 2004By C. Wagner-Riddle
Composted organic wastes have been shown to reduce emissions of N2O and CH4, but little is known about the release of these gases during the composting process. This research examined the emissions...
Yield and nutrient export of grain corn fertilized with raw and treated liquid swine manure
January 1, 2004By M.H. Chantigny
Treatment of liquid swine manure (LSM) is an option to improve nutrient management. Mineral fertilizer, raw LSM, and LSM treated by anaerobic digestion, flocculation, filtration, or natural...
Effects of operating temperature and supplemental nutrients in a pilot-scale agricultural biofilter
January 1, 2004By O.G. Clark
In this study, the objective was to determine if different operating temperatures and/or the addition of supplemental inorganic nutrients affected the odour removal capacity of two pilot-scale,...
Nutrition and feed management strategies to reduce nutrient excretions and odors from swine manure
January 1, 2004By A. L. Sutton
Manipulation of the pig's diet to reduce nutrient excretions and odors is feasible and practical. Avoiding excessive dietary protein, using high quality protein sources, and feeding low protein,...
Synthetic covers for emissions control from earthen embanked swine lagoons – Part I: Positive pressure lagoon cover
January 1, 2004
An air-supported cover of 0.35-mm vinyl coated fabric was installed on a 29- x 39-m earthen-embanked swine lagoon. At a normal operating pressure of 80 to 100 Pa, leakage rate (air supplied to keep...
