Nitrogen mass balance in fields irrigated with liquid swine
January 1, 2008By S. C. Whalen
Over the past 15-years, swine-producing
confined animal feeding operations (CAFOs) have
proliferated throughout the Southeastern United
States, particularly in North Carolina. Waste at...
The impact of swine lagoon seepage on shallow groundwater quality: Groundwater remediation through lagoon closure and pumping
January 1, 2008By Jon M. Hathaway
Anaerobic lagoons have been used extensively since about 1960 to temporarily store and partially treat livestock waste from concentrated animal production facilities. An earlier study characterized...
Antibiotic Losses in Leaching and Surface Runoff from Manure-Amended Agricultural Land
January 1, 2008By H. Dolliver
A 3-yr field study quantified leaching and runoff losses of antibiotics from land application of liquid hog (chlortetracycline and tylosin) and solid beef (chlortetracycline, monensin, and tylosin)...
Oxidization-reduction potential and pH for optimization of nitrogen removal in a twice-fed sequencing batch reactor treating pig slurry
January 1, 2008By and Yingxu Chen|Weixiang Wu|Zhiying Han
Changes in oxidization-reduction potential (ORP) and pH along with ammonia nitrogen, nitrite nitrogen and nitrate nitrogen in a twice-fed sequencing batch reactor (SBR) treating pig slurry were...
The effects of manure application on soil aggregation
January 1, 2008By C. S. Wortmann
Surface application of manure may increase the risk of phosphorus loss in runoff. Manure application, however, often results in increased soil aggregate stability with reduced runoff and erosion and,...
Environmental Aspects of Ethical Animal Production
January 1, 2008
Livestock and poultry producers face a number of challenges including pressure from the public to be good environmental stewards and adopt welfare-friendly practices. In response, producers often...
Modeling studies of ammonia dispersion and dry deposition at some hog farms in North Carolina
January 1, 2008By Bajwa Kanwardeep S.
A modeling study was conducted on dispersion and dry deposition of ammonia taking one hog farm as a unit. The ammonia emissions used in this study were measured under our OPEN (Odor, Pathogens, and...
Environment - Air
Particulates, Ammonium Nitrate, and Ammonium Sulfate: Effects on Air Quality in Rural Iowa
December 26, 2007By R. L. Pfeiffer
Air quality has many components, one of which is PM2.5 and ammonium nitrate and ammonium sulfate are reported to be two of the major components. Swine confinement facilities generate significant...
Pork Safety - Pre-Harvest
Risk Assessment for Salmonella spp. in Cooked Pork
December 4, 2007By Arthur Miller
The purpose of this research was to develop a retail-to-table risk assessment to evaluate the likelihood of developing salmonellosis from consumption of a serving of enhanced or un-enhanced pork...
Pork Safety - Pre-Harvest
Development of Antibiotic Usage Information in Swine
November 2, 2007By John Deen
There exists global concern about the emergence of antibiotic-resistant strains of bacteria and their potential relationship to antimicrobial use in food animal production. Despite this, the U.S....
