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Industry Partners
Prairie Swine Centre is an affiliate of the University of Saskatchewan
Prairie Swine Centre is grateful for the assistance of the George Morris Centre in developing the economics portion of Pork Insight.
Financial support for the Enterprise Model Project and Pork Insight has been provided by:
Odor-Reduction Performance of Constructed Wetland Treating Diluted Swine Manure
Posted in: Environment by admin on January 1, 2007 | No Comments
The objective of this study was to determine the long‐term, odor‐reduction performance of a vegetated, sub‐surface flow wetland system on a swine farm. It was found that the wetlands did treat a wide range of dilute manure ammonium and solids levels while providing significant odor reduction.
Ammonia emissions from farmyard manure heaps and slurry stores—Effect of environmental conditions and measuring methods
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Ammonia (NH3) emissions were measured from pig and cattle slurry storage by means of
the funnel technique on the slurry surface and floating wind tunnels. It was found that emissions of ammonia from animal waste storage correlated with slurry temperature and were dependent on the measuring method used.
Results obtained by the wind tunnel were considered to be the most representative of
losses under real environmental conditions and could be used for an investigation of the
national inventory.
OPTIMIZING THE SIZE OF ANAEROBIC DIGESTERS
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In situ determination of slurry nutrient content by electrical conductivity
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Application of Different Organic Wastes on Soil Properties and Wheat Yield
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The fate of anti-parasitics in manure and manure-applied soils
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Data covering the fate and behavior of veterinary medicinal products (VMP) in manure and manure-applied soils has been significantly enhanced, thanks to recent research out of Germany. An innovative experimental design for laboratory tests on VMP was developed in order to simulate the real entry route of VMP into soil environments already under laboratory conditions. Degradation tests of VMP as 14C labeled radio-tracers in manures were conducted. Test manures containing seven-day aged VMP residues were prepared and then applied in laboratory batch tests to study degradation and absorption of VMP in soils containing manure. In further tests, the differentiation of microbial, chemical and photo-induced degradation were taken into account. Finally, test plot experiments were performed under field conditions to monitor the transferability of the laboratory data to field conditions. The degradation tests show the dependence of the metabolic fate on the microbial activity in the soil and on the test manure application. These aspects emphasize that the consideration of manure effects already under laboratory conditions support a better understanding of the environmental fate of VMP under field conditions.
Taking the long view on improving municipal groundwater supplies
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Some beneficial management practices (BMPs) resulting from the Nutrient Management Act can take years
to have a positive impact on water quality. On the other hand, in the case of impacts on municipal
groundwater supplies, very strict management practices implemented on a small number of farms adjacent to municipal water wells can result in significant improvements.
According to Dr. David Rudolph, a Professor in the Department of Earth Sciences at the University of Waterloo, “we don’t necessarily need to involve the entire countryside in really draconian changes to land use practices if we do some very strict management of nutrients very close to municipal water wells.”
Abatement of Ammonia Emissions from Swine Lagoons using Polymer-Enhanced Solid-Liquid Separation
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A study was conducted to determine the effects of solid‐liquid separation of liquid swine manure on ammonia
emissions from lagoons. It was found that although water quality changes were modest in the treated lagoon with respect to the control, total annual NH3 emissions abatement in the lagoon with solid‐liquid separation was 73% with respect to the anaerobic lagoon control. These results overall demonstrate that solid‐liquid separation technologies can substantially reduce ammonia emissions from anaerobic swine lagoons.