Emissions of N2O and CH4 during the composting of liquid swine manure
January 1, 2004By C. Wagner-Riddle
Composted organic wastes have been shown to reduce emissions of N2O and CH4, but little is known about the release of these gases during the composting process. This research examined the emissions...
Yield and nutrient export of grain corn fertilized with raw and treated liquid swine manure
January 1, 2004By M.H. Chantigny
Treatment of liquid swine manure (LSM) is an option to improve nutrient management. Mineral fertilizer, raw LSM, and LSM treated by anaerobic digestion, flocculation, filtration, or natural...
Effects of operating temperature and supplemental nutrients in a pilot-scale agricultural biofilter
January 1, 2004By O.G. Clark
In this study, the objective was to determine if different operating temperatures and/or the addition of supplemental inorganic nutrients affected the odour removal capacity of two pilot-scale,...
Nutrition and feed management strategies to reduce nutrient excretions and odors from swine manure
January 1, 2004By A. L. Sutton
Manipulation of the pig's diet to reduce nutrient excretions and odors is feasible and practical. Avoiding excessive dietary protein, using high quality protein sources, and feeding low protein,...
Synthetic covers for emissions control from earthen embanked swine lagoons – Part I: Positive pressure lagoon cover
January 1, 2004
An air-supported cover of 0.35-mm vinyl coated fabric was installed on a 29- x 39-m earthen-embanked swine lagoon. At a normal operating pressure of 80 to 100 Pa, leakage rate (air supplied to keep...
A system for manure treatment and phosphorous control on small dairy and swine farms
January 1, 2004By Victor Johnson
Focus on animal waste treatment for odor and phosphorus control has small farmers in a quandary. Sophisticated systems for manure dewatering and treatment involving centrifuges, screw presses, belt...
Effect of aluminum chloride and dietary phytase on relative ammonia losses from swine manure
January 1, 2004
Ammonia (NH3) losses from swine manure contribute to odor problems, decrease animal productivity, and increase the risk of acid rain deposition. This study was conducted to determine whether aluminum...
Phosphorus Composition of Manure from Swine Fed Low-Phytate Grains: Evidence for Hydrolysis in the Animal
January 1, 2004By April B. Leytem
Including low-phytic-acid grains in swine diets can reduce P concentrations in manure, but the influence on manure P composition is relatively unknown. To address this we analyzed manure from swine...
Effects of manure removal strategies on odor and gas emissions from swine finishing
January 1, 2004
Odor, ammonia (NH3) and hydrogen sulfide (H2S) concentrations and emission rates were measured in two small rooms of finishing pigs with different manure removal strategies. The strategies included...
Abatement of ammonia emissions from swine lagoons using polymer-enhanced solid-liquid separation
January 1, 2004By Ariel A. Szög
A study was conducted to determine the effects of solid-liquid separation of liquid swine manure on ammonia emissions from lagoons. This determination was done at full-scale in two contiguous swine...
