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Pork Checkoff Research

Research is at the heart of the National Pork Board’s mission and is funded by your Pork Checkoff dollars. Research is administered in all areas of pork production, processing, and human nutrition to develop a higher quality and more profitable product in the competitive meat protein market.

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Bacteria and nutrient transport to tile lines shortly after application of large volumes of liquid swine manure
The rapid growth and concentration of the livestock production industry has increased concerns about potential water quality problems from land application of manure. A study was conducted using 14...
Controlling odor and volatile substances in liquid hog manure by amendment
Five commercial pit additive products were examined for effectiveness of controlling the release of odorous and volatile compounds from swine manure. pH, volatile fatty acids, total solids, total...
The hindrance in the development of pit additive products for swine manure odor control: a review
This paper reviews the literature on the development of pit additive products for swine manure odor control. It addresses the problems currently existing in the areas of both product designing and...
Characterization of volatile organic emissions and wastes from a swine production facility
Analytical methods for monitoring the volatile organic compound (VOC) emissions, for defining atmospheric transport coefficients, and for monitoring solution phase chemistry have been developed to...
An on-farm swine waste treatment system for odor control, byproduct recovery and treated wastewater reuse in Hawaii
A prototype of a pig waste treatment system for a 240-270 pig operation was investigated for its potential of odour control, byproduct utilization and treated wastewater reuse. The high solid portion...
Dust concentrations and particle size distribution in an enclosed swine nursery
Dust levels in a mechanically ventilated swine nursery were measured for 13 sampling days over a six-week period during warm weather conditions. Mean daily room air temperature and relative humidity...
Evaluation of commercial manure additives to control odors from swine barns
A protocol was developed and tested to evaluate commercial manure additives in pig finishing barns. The ammonia and manure were analysed for fertilizer value. Air samples, collected at regular...
Biofiltration using partially stabilized hog manure compost
Hog manure amended with sawdust (moisture 56-60% wet basis, C/N 19-21) was composted in pilot-scale vessels using continuous aeration (CA) and intermittent aeration (IA) for 3 and 4 weeks. In two...
Odor emission from a swine finishing facility with a surface-aerated lagoon
Odour emission from a 6 000 head swine grow-finish facility was measured in May 1998. Lagoon odour emission with simulated wind speeds of 1.1 m/s in a new buoyant convective flux chamber ranged from...
Laboratory study of surface aeration of anaerobic lagoons for odor control of swine manure
Surface aeration of pig manure stored in anaerobic lagoons for odour control was experimentally studied in the laboratory. The effects of different aeration rates and depths on reduction in emission...
Estimating ammonia loss from sprinkler-applied swine effluent
Volatilization of NH3 from sprinkler-applied effluent is a major N loss pathway in the Great Plains region, but there is disagreement as to how much of the total NH4-N applied in effluent is lost....
Ammonia and nitrous oxide emissions from sprinkler irrigation applications of swine effluent
In the USA, swine operations produce more than 14 Tg of manure each year. About 30% of this manure is stored in anaerobic lagoons before effluent applications to land. Although land application is...
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