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...
Composted swine manure effects on germination and early growth of crop and weed species under greenhouse conditions
January 1, 2001
The effects of composted swine manure (0, 8, 16 or 24 mg C/ha) on maize (cv. Pioneer 3563), soyabean (cv. Pioneer 92B84), winter wheat (cv. Arapahoe), velvetleaf (Abutilon theophrasti), giant foxtail...
Occurrence and diversity of tetracycline resistance genes in lagoons and groundwater underlying two swine production facilities
January 1, 2001By R.I. Aminov
In this study, we used PCR typing methods to assess the presence of tetracycline resistance determinants conferring ribosomal protection in waste lagoons and in groundwater underlying two swine...
Ammonia volatilization and soil nitrogen dynamics following fall application of pig slurry on canola crop residues
January 1, 2001By Philippe Rochette
Land application of liquid manures is a major source of atmospheric ammonia. The presence of crop residues on the soil surface usually increases emissions by retarding slurry infiltration, whereas...
Raising pH by low-level aeration for soluble phosphorus removal of swine manure
January 1, 2001By JUN ZHU
Soluble phosphorus (P) removal by increasing swine manure pH was investigated in this study. Sodium hydroxide (1 M) was used to increase the manure pH from 6.5 to 9. Two aeration treatments...
Effects of alum and aluminum chloride on phosphorus runoff from swine manure
January 1, 2001
Phosphorus (P) runoff from fields fertilized with swine (Sus scrofa domesticus) manure may contribute to eutrophication. The objective of this study was to evaluate the effect of aluminum sulfate...
Phosphorus transformations in swine manure during continuous and intermittent aeration processes
January 1, 2001
The objective of the study presented here was to determine the transformation of phosphorus (P) between different forms in the process of intermittent and continuous aeration. According to this...
Swine wastewater treatment using attached-growth and suspended-growth two stage sequencing batch reactors with real-time control
January 1, 2001
Two two-stage sequencing batch reactors (TSSBR), one attached-growth and one suspended-growth, were operated under three levels of wastewater concentration (approx. 4,000, 2,000 and 500 TOC mg/L),...
Biological anoxic/aerobic treatment of swine waste for reduction of organic carbon, nitrogen, and odor
January 1, 2001By Caye M. Drapcho
A continuous-flow anoxic/aerobic (A/A) biological treatment system designed to treat swine wastewater was investigated. Laboratory studies were conducted to determine the heterotrophic bacteria...
Hydrogen sulfide assessment in shallow-pit swine housing and outside manure storage
January 1, 2001
In Saskatchewan, some recent incidents have lead us to believe that certain manure management activities can potentially release high concentrations of H2S into the atmosphere of shallow-pit barns....
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...
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...
