Characterizing ammonia emissions from swine farms in eastern north carolina: Part 1-conventional lagoon and spray technology for waste treatment
January 1, 2002By Aneja Viney P.
Ammonia (NH3) fluxes from waste treatment lagoons and barns at two conventional swine farms in eastern North Carolina were measured. The waste treatment lagoon data were analyzed to elucidate the...
Retention of nitrogen and phosphorous from liquid swine and poultry manures using highly characterized peats
January 1, 2002
This paper reports on research designed to test the hypothesis that differences in peat composition will cause differences in amounts of N and P retained during contact with liquid swine manure (LSM)...
Antibiotic-resistant enterococci and fecal indicators in surface water and groundwater impacted by a concentrated swine feeding operation
January 1, 2002By A.R. Sapkota
BACKGROUND: The nontherapeutic use of antibiotics in swine feed can select for antibiotic resistance in swine enteric bacteria. Leaking swine waste storage pits and the land-application of swine...
Carbon, nutrient, and mass loss during composting
January 1, 2002By S.M. Tiquia
Hoop manure (a mixture of partially decomposed pig manure and cornstalks from swine fed in hoop structures) was the subject of a nitrogen mass balance during the feeding period. The manure was then...
Reduction of ammonia emissions from treated anaerobic swine lagoons
January 1, 2002By Ariel A. Szögi
There is a need for treatment technologies that can effectively address environmental concerns associated with manure in confined animal production, including accurate assessment of their...
Effects of stocking rate and crude protein intake during gestation on ground cover, soil-nitrate concentration, and sow and litter performance in an outdoor swine production system
January 1, 2002By J. J. McGlone
Pregnant gilts (n = 126) were assigned randomly to 12 0.4-ha old world-spar bluestem (Bothriochloa ischaemum) pastures in an outdoor swine (Sus scrofa) production system to examine effects of...
Influence of anaerobic pre-conditioning on phosphorus removal in swine manure by aeration
January 1, 2002By JUN ZHU
A feasibility study with three pre-conditioning times was carried out in Waseca, Minnesota, USA, to examine the effect of anaerobic pre-treatment on phosphorus removal by aeration. The results showed...
Dynamic simulation model of nitrogen fluxes in pig housing and outdoor storage facilities
January 1, 2002By P. Berthiaume
Many factors in pig production, including genetics, feeding efficiency, feed composition, feed distribution method, environmental control, and waste management, affect the nitrogen content of pig...
Removal of carbon, nitrogen, and phosphorus in pig manure by continuous and intermittent aeration at low redox potentials
January 1, 2002By JUN ZHU
A laboratory experiment was conducted to study the effect of intermittent and continuous aeration at an airflow rate of 0.0667 lmin-1 l-1 of manure on redox potential, pH, organic carbon, total...
Characterizing ammonia emissions from swine farms in eastern North Carolina: Part 2 – Potential environmentally superior technologies for waste treatment
January 1, 2002By Aneja
The need for developing environmentally superior and sustainable solutions for managing the animal waste at commercial swine farms in eastern North Carolina has been recognized in recent years....
