Antimicrobial Use and Resistance in Swine Waste Treatment Systems
January 1, 2006By Julie L. Zilles
Chlortetracycline and the macrolide tylosin were identified as commonly used antimicrobials for growth promotion and prophylaxis in swine production. Resistance to these antimicrobials was measured...
Winter Cover Crop and Management Effects on Summer and Annual Nutrient Yields
January 1, 2006By D.E. Rowe|T.E. Fairbrother
Effluent from a swine (Sus scrofa domesticus) lagoon is often applied repeatedly to nearby fields because of logistical constraints and costs of transportation. To minimize accumulation of soil...
Modification and Validation of GLEAMS for Prediction of Phosphorus Leaching in Waste-Amended Soils
January 1, 2006By R.D. Kinley
Excess phosphorus applied to soils with low P adsorption capacities can enter surface water via leaching and subsurface transport, thereby negatively impacting water quality. Computer simulation...
Aerating grassland before manure application reduces runoff nutrient loads in a high rainfall environment
January 1, 2006By Agriculture and Agri-Food Canada|Pacific Agri-Food Research Centre|S. Bittman
The effect of mechanically aerating grassland before liquid manure application in the fall on surface runoff and transport of nutrients and solids was studied in a high rainfall area. The two...
UV inactivation of bacteria in raw and pre-treated liquid swine manure
January 1, 2006By Environmental Engineering|P. SINGH Department of Civil
The study was conducted to investigate the effectiveness of ultraviolet (UV) irradiation for inactivating coliform bacterial indicators in liquid swine manure samples using a laboratory-scale,...
Design and evaluation of a regenerating scrubber for reducing animal house emissions
January 1, 2006By Sanjay B. Shah
Animal houses can emit substantial quantities of air pollutants. Compared with other pollutants, ammonia is emitted from animal houses in relatively large quantities and can have adverse public...
Ammonia and nitrous oxide emissions from two acidic soils of Nova Scotia fertilised with liquid hog manure mixed with or without dicyandiamide
January 1, 2006By M.S. Mkhabela Department of Engineering
Gaseous nitrogen (N) loss from field-applied manure in the form of ammonia (NH3) and nitrous oxide (N2O) has negative agronomic, environmental and health implications. This study was undertaken to...
Isolation of Salmonella bacteriophages from swine effluent lagoons
January 1, 2006By M.R. McLaughlin United States Department of Agriculture
Bacteriophages (phages) associated with Salmonella were collected from nine swine manure lagoons in Mississippi. Phages were isolated by an enrichment protocol or directly from effluent. For...
Equilibrium sampling used to monitor malodors in a swine waste lagoon
January 1, 2006By J.H. Loughrin and N. Lovanh
The concentrations of malodorous compounds in a 0.4-ha anaerobic lagoon that received waste from approximately 2000 sows were monitored during the late summer to late fall of 2006 to gain insight...
Effect of swine and dairy manure amendments on microbial communities in three soils as influenced by environmental conditions
January 1, 2006By R. P. Larkin
Understanding the impacts of manure amendments on soil microorganisms can provide valuable insight into nutrient availability and potential crop and environmental effects. Soil microbial community...
Developing an environmental manure test for the phosphorus index
January 1, 2006By Peter J. A. Kleinman
Widespread implementation of the phosphorus (P) index has focused attention on environmental manure tests that can be used to estimate the relative availability of P in manure to runoff water. This...
Treatment of swine manure effluent using freshwater algae: Production, nutrient recovery, and elemental composition of algal biomass at four effluent loading rates
January 1, 2006By Walter W. Mulbry United States Department of Agriculture
Cultivating algae on nitrogen (N) and phosphorus ( P) in animal manure effluents presents an alternative to the current practice of land application. The objective of this study was to determine how...
