FAT THICKNESS AND LOIN EYE AREA EFFECTS ON PORK CARCASS QUALITY MEASURES

Posted in: Production by admin on January 1, 2000 | No Comments

EVAPORATION REDUCTION POTENTIAL IN AN UNDISTURBED SOIL IRRIGATED WITH SURFACE DRIP AND SAND TUBE IRRIGATION

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Hudrogen Sulfide Production from Stored Liquid Swine Manure: A Laboratory Study

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The production of hydorgen sulfide from liquid swine manure is influenced by the manure settling characteristics and the initial sulfate concentration was studied in the laboratory. The manure was settled in a 30cm diameter x 120cm high column for 24 hours and then divided into three layers based on solids content. The manure from different layers was placed in separate closed jars and stored for 30 days a 22 degrees Cesius. The total sulfide, total solids, volatile solidds, pH in the manure, and hydrogen sulfide in the effluent gas stream was measured. The sulfide production rate was highest for all three manure layers during the first 5-10 days of storage. The top manure layer had the lowest solids content and the highest sulfide concentration. Howwever, due to the l;ower pH levels in the bottom layer, the concentrationof molecular H2S is higher in the bottom layer than the top layer. Mathematical equations for predicting H2S concentration and production rates in the different manure layers were derived. Three levels of initial sulfate concentration were used to test the effect of initial sulfate concentration in the liquid swine manure on sulfide production. Higher sulfate concentration in the manure resulted in higher sulfide concentration during the storage priod. From the observations made, it was confirmed that reducing the sulfate concentration in the water supply would help reduce the sulfide production in the pit.

A Strategy for Sustainable Manure Management in Saskatchewan

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Sustainable manure management is the application of sounds practices supported by scientific data over time. The impetus for research, development and extension activities will come from the industry, the public and federal and provincial agencies. To be successful, however, efforts must be co-ordinated, targeted to needs and delivered effectively.
What is clear is that single solutions are not the answer. We need to approach manure management from a systems perspective. The challenges identified under each of the strategic areas, although presented separately, are inter-related. Solutions must account for these relationships and evaluate the trade-offs that inevitably occur with decision-making. As a working document, this strategy brings together the challenges we face in manure management and allows stakeholders to see each component as part of a whole. It describes the objectives for each category, manure storage, manure application and use, manure odours, manure handling and transportation systems, manure treatment, environmental planning and communications and extension. It then describes the research being done in the area, the development of a strategy and the extension activities.

Biomass Cofiring Potential and Experiences in The Netherlands

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Control of trichinellosis by inspection and farm management practices

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Atmospheric transport and wet deposition of ammonium in North Carolina

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Swine Manure Application to Nodulating and Nonnodulating Soybean

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Development of an Oil Sprinkling System for Dust Control in Swine Buildings

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A sprinkling system using undiluted canola oil has been designed to control dust level in pig buildings. Over the course of the experiment dust concentration levels were reduced by 79% over a two week testing period. While respirable and inhalable dust particle counts were reduced by 73% and 80% respectively.

Icronized and Flaked Wheat in Nursery Diets

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