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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:
Methods of assessing adequacy of drinker provision in group-housed pigs.
Posted in: Production by admin on January 1, 1999 | No Comments
Mass Transfer Coefficient of Ammonia in Liquid Swine Manure and Aqueous Solutions
Posted in: Environment by admin on | No Comments
Effect of Anaerobic Digestion on Struvite Production for Nutrient Removal from Swine Waste Prior to Land Application
Posted in: Environment by admin on | No Comments
Cases exist where relatively intense livestock production exists in areas with limited arabll land: Denmark, Netherlands and North Carolina. Over time repeated manure application can result in an accumulation of phosphorus in mnaure applied soils. Most nutrient management plans are formulated on Nitrogen, preventing leaching of nitrogen from the soil. If nutrient management plans were based on phosphorus application rates land requirements would increase 4 to 8 times. Alternative solution exist to reduce the phosphorus content of manure. One of these is forced precipitation of struvite for phoisphorus removal. “Using raw swine manure, testing has demonstrated that up to 92% of reactive phosphorus can be removed by th addition of Mg2+ to the waste in the form MgO and by heating to 35 degrees Celcius to force formation of struvite. Up to 98% of the reactive phosphorus can be removed by the same procedure with anaerobially digested swine manure.” However a 95% reduction in reactive phosphorus can be achieved for half of the chemical cost.
Swine Manure Control by the TOAST Aerobic System
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A full scale TOAST (Tertiary Oxygen Activated System Treatment) was constructed and evaluated in Southern Minnesota. The objectives of this system was to determine the odour reduction potential for a completley aerobic treatment system with the use of high pressure vessels, determine the system management characteristics and determine the energy required to operate the system in order to reduce odours. Air samples taken at the fan outlet were taken and odour thresholds were determined through olfactometry. The odours in the treated barn were significantly lower with approximately a 50% reduction in the treated barn. Hydrogen sulfide emissions and odour units were both greater in the untreated barn, with odour units being twice as high in the control barn. Additional electrical costs associated with the project were based on additional kilo-watt usage. The TOAST system would cost approximately $9.60 /day to operate with a facility size of 300 animal units.
Swine Manure Storage Covers for Odor Control
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Development of a Negative Air Pressure Cover System for Swine Manure Earthen Storages in Manitoba
Posted in: Environment by admin on | No Comments
Most livestock manure in Canada is retained in storage until it can be applied to agricultural lands to be used as a resource for crop production and soil improvement. Earthen manure storages are an economically attractive alternative for manure management that gives a competitive advantage to livestock producers. Because of their large surface area, earthen manure storages are the focus of concerns regarding odours from hog operations. This project was intended to demonstrate and evaluate a cover system that will help to improve the economic and environmental performance of earthen manure storages. The novel cover system proved to have many advantages including: Year round control of odour from the manure storage basin, cost-effectiveness, increase in the fertilizer value of manure due to the reduction in ammonia volatilization, elimination of a breeding habitat for flies, prevention of precipitation entering the storage basins, ease of installation, reliability, durability and stability. The use of a negative air pressure cover system will provide livestock producers with a single, inexpensive method to eliminate odour, the most prominent problem, associated with manure storages. It will also enhance the value of manure as a nutrient source for crop production.
Effect of Dietary Protein and Fiber on Nitrogen Excretion
Posted in: Prairie Swine Centre by admin on | No Comments
Update on the PSC Esltow Research Facility
Posted in: Prairie Swine Centre by admin on | No Comments