National Pork Board Archives - Page 118 of 199 - Pork Checkoff

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PHOSPHORUS RUNOFF POTENTIAL OF VARYING SOURCES OF MANURE APPLIED TO FESCUE PASTURES IN VIRGINIA
The P Index for Virginia uses coefficients describing the risk of P runoff from pastures for different nutrient sources, but these coefficients have not been verified on Virginian soils. An...
Deodorization of swine manure using minced horseradish roots and peroxides
Public concerns about offensive odors from livestock manures are on the rise and so is the pressure to develop practical ways to reduce the odors. The use of minced horseradish (Armoracia rusticana...
Management strategy impacts on ammonia volatilization from swine manure
Ammonia emitted from manure can have detrimental effects on health, environmental quality, and fertilizer value. The objective of this study was to measure the potential for reduction in ammonia...
Demonstrating Innovative Use of Precision Farming Technologies to Optimize Manure Nutrient Utilization and Reduce Environmental Concerns
The uniform application of manure is difficult and often leads to questions of available nutrient credits. For these reasons farmers and their consultants often discount the value of these nutrients...
Field-scale evaluation of phosphorus leaching in acid sandy soils receiving swine waste
Accurate descriptions of P leaching are important because excess P applied to soils can enter surface water via leaching and subsurface transport, thereby negatively impacting water quality. The...
Gas and odor emissions from swine building materials
Gas and odor emissions produced by twelve different materials commonly used in typical swine buildings were measured using a method based on ASTM standard D-5116 After being submerged for 72 h in...
Loss of Virulence Genes in Escherichia coli Populations during Manure Storage on a Commercial Swine Farm
Confined livestock production farms typically store their wastes prior to land application. Here, we employed three complementary approaches to evaluate changes in the population structure and...
Assessment of an aerosol treatment to improve air quality in a swine concentrated animal feeding operation (CAFO)
Poor air quality within swine concentrated animal feeding operations (CAFOs) poses a threat to workers, the surrounding community, and farm production. Accordingly, the current study was conducted to...
Effect of pig slurry solids on aeration efficiency and odour generation
Two laboratory-scale experiments were carried out in this study to determine the effect of slurry solids content on aeration efficiency and the odour generation potential for the treated slurry...
Size distribution and composition of particles in raw and anaerobically digested swine manure
The design of efficient manure treatment systems requires a better characterization of particle and nutrient distribution in manure slurries. The aim of this project was to study particle size, COD,...
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