The effect of feeding low-phytate barley-soybean meal diets differing in protein content to growing pigs on the excretion of phosphorus and nitrogen
January 1, 2007By J. K. Htoo
An experiment was conducted with growing pigs to determine the excretion of P and N in 4 barley-based diets formulated to contain 18 or 15% CP by using a normal barley (NB) or a low-phytate barley...
Development of environmentally superior treatment system to replace anaerobic swine lagoons in the USA
January 1, 2007
A full-scale treatment system for swine manure was developed to eliminate discharge to surface and ground waters and contamination of soil and groundwater by nutrients and heavy metals, along with...
Nutrient concentrations of runoff during the year following manure application
January 1, 2007By John E. Gilley
Little information is currently available concerning temporal changes in nutrient transport following the addition of manure to cropland areas. This study was conducted to measure nutrient transport...
Odor-reduction performance of constructed wetland treating diluted swine manure
January 1, 2007By Eileen F. Wheeler
The odor-reduction capability of livestock wastewater treatment wetlands has been primarily anecdotal and presented as a benefit beyond the already widely recognized attributes. The objective of this...
Nitrogen balance and accumulation pattern in three contrasting prairie soils receiving repeated applications of liquid swine and solid cattle manure
January 1, 2007By C. Stumborg & J. J. Schoenau
The expansion of intensive livestock operations in western Canada has increased concerns about overloading of nutrients in manured lands. The magnitude of nutrient accumulation and its distribution...
Soil-based treatment of partially treated liquid swine manure
January 1, 2007By H. YANG Department of Civil and Environmental Engineering
A soil-column system was tested for the removal of soluble organics and nutrients from partially treated liquid swine manure. The liquid manure was applied to the 900 mm deep (300 mm of local topsoil...
Empirical analysis and prediction of nitrate loading and crop yield for corn-soybean rotations
January 1, 2007By Malone
Nitrate nitrogen losses through subsurface drainage and crop yield are determined by multiple climatic and management variables. The combined and interactive effects of these variables, however, are...
A novel use of anaerobically digested liquid swine manure to potentially control soybean cyst nematode
January 1, 2007By JUN ZHU
Experiments were carried out in two steps to determine the effect of anaerobically digested swine manure on soybean cyst nematode (SCN) egg control. In the first step, liquid swine manure underwent...
Effect of potassium inhibition on the thermophilic anaerobic digestion of swine waste
January 1, 2007By Chen
The inhibition effects of high potassium concentration on thermophilic anaerobic digestion of swine waste were studied. A continuous stirred tank reactor (CSTR), operated at a hydraulic retention...
Temporal Dynamics and Impact of Manure Storage on Antibiotic Resistance Patterns and Population Structure of Escherichia coli Isolates from a Commercial Swine Farm
January 1, 2007By Edward Topp|Patrick Duriez
Many confined-livestock farms store their wastes for several months prior to use as a fertilizer. Storing manure for extended periods could significantly bias the composition of enteric bacterial...
