Influence of phytase on water-soluble phosphorus in poultry and swine manure
January 1, 2005
The effect of dietary non-phytin phosphorus (NPP) and phytase (PHY) concentration on total phosphorus (TP) and water-soluble phosphorus (WSP) excretion was determined. Diets tested in broiler...
Detection and occurrence of antimicrobially resistant E-coli in groundwater on or near swine farms in eastern North Carolina
January 1, 2005By Anderson
The use of antibiotics for growth promotion and disease treatment by the commercial swine industry has led to high proportions of multiple antibiotic-resistant enteric bacteria being shed by these...
Effect of pig slurry solids on aeration efficiency and odour generation
January 1, 2005
Two laboratory-scale experiments were carried out in this study to determine the effect of slurry solids content on aeration efficiency and the odour generation potential for the treated slurry...
Gas and odor emissions from swine building materials
January 1, 2005
Gas and odor emissions produced by twelve different materials commonly used in typical swine buildings were measured using a method based on ASTM standard D-5116 After being submerged for 72 h in...
Management strategy impacts on ammonia volatilization from swine manure
January 1, 2005
Ammonia emitted from manure can have detrimental effects on health, environmental quality, and fertilizer value. The objective of this study was to measure the potential for reduction in ammonia...
Dissimilatory iron reduction and odor indicator abatement by biofilm communities in swine manure microcosms
January 1, 2005By Bruns|M.A
Animal waste odors arising from products of anaerobic microbial metabolism create community relations problems for livestock producers. We investigated a novel approach to swine waste odor reduction:...
Evaluation of electrolysis for oxidative deodorization of hog manure
January 1, 2005By Bunce|N.J.
Electrolysis was investigated as a method for the amelioration of odor from the supernatant phase of centrifuged liquid hog manure. Methods examined included the use of dual anodes to provide both...
Determination of odor-annoyance-free setback distances from animal production sites: Part II. Model development and evaluations
January 1, 2005
The OFFSET (Odor from Feedlots - Setback Estimation Tool) model was developed to estimate the setback distances from animal production sites in Minnesota. It is based on odor emissions taken from...
Dietary strategies for reduced phosphorus excretion and improved water quality
January 1, 2005
Cost effective feeding strategies are essential to deal with P surpluses associated with intensive animal agriculture and the consequent impact on water quality. Reduction of P overfeeding, use of...
Effects of room ozonation on air quality and pig performance
January 1, 2005By Lingying Zhao
Reducing odor emissions from swine farms to avoid complaints about odor nuisance is a major issue. Ozonation has been used to reduce odor in swine buildings, but little research exists on its...
Multidimensional gas chromatography-olfactometry for the identification and prioritization of malodors from confined animal feeding operations
January 1, 2005By Donald W. Wright
Odor profiling efforts were directed at applying to high-density livestock operations some of the lessons learned in resolving past, highly diverse, odor-focused investigations in the consumer...
Infectious swine hepatitis E virus is present in pig manure storage facilities on United States farms, but evidence of water contamination is lacking
January 1, 2005By P. G. Halbur
Fresh feces, manure slurry (from earthen lagoons and/or concrete pits), and drinking and surface water samples were collected from 28 pig farms in the Midwestern United States. All samples were...
