Dietary manipulation to reduce ammonia concentrations in nursery pig facilities
January 1, 2001By A.J. Lewis
Two 4-wk trials (preliminary study) and three 5-wk trials (major study) were conducted to determine the effects of adding Yucca schidigera extract or anhydrous calcium chloride to nursery diets on...
Microbial quality of runoff following land application of cattle manure and swine slurry
January 1, 2001
Concentrations of human health-related microorganisms in runoff from agricultural plots (0.75 m x 2 m) treated with fresh and aged cattle manure, swine slurry and no manure (control) were determined....
Greenhouse gas emissions from liquid swine manure storage facilities in Saskatchewan
January 1, 2001
Greenhouse gas (GHG) emissions from manure storage facilities at four different commercial farrow-to-finish swine operations under liquid manure management located in Saskatchewan, Canada, were...
Environment - Air
Subsurface drip irrigation versus center-pivot sprinkler for applying swine effluent to corn
January 1, 2001By R. Carreira
A risk-averse irrigated corn producer would be better off choosing the more expensive subsurface drip irrigation (SDI) over center-pivot sprinkler (CPS), given limited aquifer life and swine effluent...
Characteristics and emission rates of odor from commercial swine nurseries
January 1, 2001
Odor emission rates and characteristics were evaluated at two commercial swine nurseries in Indiana during the months of March, April, and May. The nurseries, housing 94 to 250 pigs, were...
The Effect of Aeration on Phosphorus Removal in Swine Manure under Different Temperatures
January 1, 2001By JUN ZHU
The effect of aeration on phosphorus removal from swine manure under five temperature regimes, 5, 10, 15, 20, and 25 degrees C, was investigated. The effects of pH and volatile fatty acids (VFAs)...
Dietary adipic acid reduces ammonia emission from swine excreta
January 1, 2001
Adipic acid is only partially catabolized when it is fed to animals, and a portion of it is excreted in urine. The excreted portion may lower urinary pH and, as a result, ammonia emission. The...
Nitrogen mineralization and uptake by ryegrass in a clay loam soil amended with composts or liquid pig manure
January 1, 2001By X. M. Yang
Although composted liquid pig manure is increasingly being applied to agricultural soils, little is known about its impacts on N dynamics (mineralization, denitrification, immobilization, and plant...
Ammonia volatilization from marsh-pond-marsh constructed wetlands treating swine wastewater
January 1, 2001
Ammonia (NH3) volatilization is an undesirable mechanism for the removal of nitrogen (N) from wastewater treatment wetlands. To minimize the potential for NH3 volatilization, it is important to...
Laboratory and In-Situ Reductions of Soluble Phosphorous in Swine Waste Slurries
January 1, 2001By Robert T. Burns
Laboratory and field experiments were conducted using magnesium chloride (MgCl2) to force the precipitation of struvite (MgNH4PO4.6H2O) and reduce the concentration of soluble phosphorous (SP) in...
