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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:
Evaluation of the Addition of Commercial Fertilizer to Swine Manure on Transportation Cost, Yield Performance and Nutrient Accumulation
Posted in: Environment by admin on January 1, 2001 | No Comments
Based on test plots conducted over the last two years it has been demonstrated that comparable yields can be achieved from an amended manure application versus commercial fertilizer. In year #1 yields from the amended manure exceeded the commercially fertilized plots by 1.1% and 13.4% in AC Barrie and Hyola 401 respectively. Weather related factors did contribute to the significant difference in Hyola yields. In year #2 the yield of Smart canola 46A73 fertilized by amended manure was 3.2% less than the plot commercially fertilized. Similar research conducted by Curtis Cavers of Manitoba Agriculturea
Effects of Alum and Aluminum Chloride on Phosphorus Runoff from Swine Manure
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Liquid Swine Manure as a Fertilizer Source for Annual and Perennial Grass Forage
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Manure application during the mid-summer months is a problem on many farms. Corn or soybeans occupy most of the crop acres. Producers inquire as to the advisability of applying liquid swine manure to established bromegrass or an annual forage grass crop. A series of studies was initiated in 1998 at the Northern Iowa Research Farm to investigate the suitability of liquid swine pit manure as a
fertilizer source for annual and perennial grass forage crops.
Manure Management in Zero Till Systems
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A sound manure nutrient management plan requires knowing what is in the manure, availability of nutrients in the soil, manure nutrients and fertilizer to be applied to meet crop nutrient demand, strategy for application, and record keepping and monitoring. A sound long term approach to efficient and environmentally friendly use of manure nutrients is to apply at rates which balance with crop demand and use over time. In the short term, rates of manure appropriate for next year’s crop may be calculated based on the anlysis of the manure content and predicted availability of the manure nutrients to be applied along with a soil test and required rates for individual nutrients as used for application of commercial fertilizer.
With a source of fertilizer such as liquid swine manure in which much of the nitrogen is contained in immediately availbable plant form ammonium, similar to commercial fertilizer the application in late fall or spring is desirable in order to reduce the opportunity for conversion of ammonium to the nitrate form which is more suseptible to leaching and dentrification. To reduce the potential for losses, these manures should be applied as close to the timeof plant nutrient demand as possible. Some challenges are faced in dealing with manure as a fertilizrer and soil amendment, including the inherent variability in manure, its low nutrient content and constrictions in transportation and application technology.
Producing Quality Compost from Livestock Manure
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Composting is the aerobic (oxygen requiring) decomposition of manure or other organic materials in the thermophilic temperature range of 104 a
Effect of supplemental phytase and ideal dietary amino acid ratios in covered and hulless-barley-based diets on pig performance and excretion of phosphorus and nitrogen in manure.
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A total of 144 (72 barrows + 72 gilts) crossbred pigs were used to determine the effect of feeding supplemental phytase and ideal dietary amino acid ratios in covered barley (CB) or hulless barley (HB)-based diets on growth performance, carcass quality, and excretion of phosphorus and nitrogen in manure during the grower and finisher periods. The three experimental grower and finisher diets were: 1) control diet (CB or HB) with Ca:P ratios according to National Research Council (NAS-NRC 1988), 2) the same as diet 1 but without added inorganic P, but supplemented with phytase (Novo Nordisk, Denmark) at 500 FTU kg-1, 3) the same as diet 2 with reduced dietary protein level, and supplemental amino acids lysine, threonine, and methionine to provide ideal dietary amino acid ratios of 0.70 for threonine to lysine and 0.30 for methionine to lysine. All diets were fed as pellets ad libitum in self-feeders with free access to drinking water. The ADG was not different (P > 0.10) between CB and HB or among the treatment diets during the grower, finisher and combined grower-finisher periods. The gain-to-feed ratios were higher (P < 0.01) for HB than for CB diets. They were also higher (P < 0.05) for diet 3 than for diet 1 during the finisher and combined grower-finisher periods. Carcass index and dressing percent were not different (P > 0.10) among the treatment diets. Supplemental phytase decreased (P < 0.05) the excretion of P during both grower and finisher periods. The combination of phytase and dietary ideal amino acid ratios decreased (P < 0.01) the excretion of both P and N. The ammonia and hydrogen sulphide production in stored liquid manure was not different among the diets.
Characterization of Odor Components from Swine Housing Dust Using Gas Chromatography
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Study of water Consumption and Waste Production During Different Growth Stages in Hog Operations
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This study was initiated to quantify and update values used by the swine industry and regulatory authorities for water consumption and waste production for swine operations using modern management practices. A second objective was to apportion total water usage and total waste production into components according to stage of production and function. Nine swine operations of similar design and management practices, but representing a cross section of herd sizes were selected and monitored for approximately 18 months. The following conclusions were drawn from the data collected: Total water use for all production phases and functions averages 89.5 litres/sow/day, eighty percent of total water use was for animal drinking, with the remainder used for animal cooling (10 a