Factors influencing the concentration of volatile fatty acids, ammonia, and other nutrients in stored liquid pig manure
January 1, 2001
In order to minimize odor and manage nutrients in liquid pig manure we need to be able to predict what operational practices most influence the concentrations of volatile fatty acids (VFAs), ammonium...
Presence of macrolide-lincosamide-streptogramin B and tetracycline antimicrobials in swine waste treatment processes and amended soil
January 1, 2001By Julie Zilles
Little is known about the fate of antimicrobials during common agricultural waste handling procedures. To better define the potential scope of this problem, concentrations of antimicrobials...
A micrometeorological mass balance approach for greenhouse gas flux measurements from stored animal manure
January 1, 2001
Storage of animal manure is estimated to be a significant agricultural source of the greenhouse gases methane (CH4) and nitrous oxide (N2O). These estimates are, however, quite uncertain due to the...
Short-term C and N dynamics in a soil amended with pig slurry and barley straw: a field experiment
January 1, 2001By Martin H. Chantigny
Interactions between animal slurries and crop residues can impact on soil N availability during decomposition. Our objective was to study the short-term decomposition of pig slurry and barley straw...
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)...
