Characterization of VOCs and particulates from swine finishing facilities
January 1, 2004By Wendy Powers
Emissions from animal feeding operations have been a prominent topic in Iowa for a number of years,particularly during 2002. To address the issue a study was initiated to determine 1) if phase of...
Abatement of ammonia emissions from swine lagoons using polymer-enhanced solid-liquid separation
January 1, 2004By Ariel A. Szög
A study was conducted to determine the effects of solid-liquid separation of liquid swine manure on ammonia emissions from lagoons. This determination was done at full-scale in two contiguous swine...
Phosphorus Composition of Manure from Swine Fed Low-Phytate Grains: Evidence for Hydrolysis in the Animal
January 1, 2004By April B. Leytem
Including low-phytic-acid grains in swine diets can reduce P concentrations in manure, but the influence on manure P composition is relatively unknown. To address this we analyzed manure from swine...
A system for manure treatment and phosphorous control on small dairy and swine farms
January 1, 2004By Victor Johnson
Focus on animal waste treatment for odor and phosphorus control has small farmers in a quandary. Sophisticated systems for manure dewatering and treatment involving centrifuges, screw presses, belt...
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,...
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...
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...
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...
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...
Seepage evaluation of older swine lagoons in North Carolina
January 1, 2004By Ronald L. Huffman
Thirty-four swine waste lagoon systems in North Carolina were examined for evidence of seepage losses to the shallow groundwater. All were constructed prior to the state's January 1993 adoption of...
Enzyme-linked immunosorbent assay for ultratrace determination of antibiotics in aqueous samples
January 1, 2004By K. Kumar
Two commercially available enzyme-linked immunosorbent assay (ELISA) kits that are commonly used for tylosin or tetracycline residues in meat and milk were adapted for ultratrace analysis of these...
Enzymatic hydrolysis of organic phosphorus in swine manure and soil
January 1, 2004By Zhongqi He
Organic phosphorus (Po) exists in many chemical forms that differ in their susceptibility to hydrolysis and, therefore, bioavailability to plants and microorganisms. Identification and quantification...
