Page 183 – Pork Checkoff

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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Use of biofilters in odor control
Use of a peat-based biofilter to reduce odour emissions from pig manure is discussed. At an air flow of 540 msuperscript 3/h, a 5.8 msuperscript 3 pilot biofilter absorbed 554 g of NH3 per day,...
Evaluation of a swine manure odor control additive
A 12 week dynamic experiment was conducted on a commercial manure additive. Manure was collected daily from finishing pigs and added to barrels. Odors were analyzed by human sniffers and detector...
Copper and zinc accumulation, profile distribution, and crop removal in coastal plain soils receiving long-term, intensive applications of swine manure
Trace metals like copper (Cu) and zinc (Zn) are added to animal feed as dietary supplements, and trace metals not assimilated by the animals gut are excreted in manure. The accumulation and movement...
Dust and bacteria removal equipment for controlling particulates in swine buildings
The potential of air ionization to control dust and bacteria in livestock buildings was investigated, using a special chamber within an animal chamber. Insulation panels with exposed aluminium foil...
Model to predict gaseous contaminants in swine confinement buildings
A brief review is given of the physiological effects of carbon dioxide, methane, ammonia and hydrogen sulphide on pigs. Manure composition is discussed in terms of broad chemical classes such as...
Soybean oil effects on nursery air quality and pig performance
Three nursery trials were conducted to determine effects on room air quality and pig performance of adding 5% soyabean oil to starter diets. Settled dust was reduced 45-47% by adding oil. Total...
Characteristics of aerial dust in swine finishing houses
Aerial dust from 11 commercial pig finishing houses, 4 with mechanical and 7 with natural ventilation, was sampled during an 8-month period. Mass concentrations of up to 38 mg/m3 were correlated with...
Solutions to reduce ammonia levels in swine facilities
Six case studies are presented for reducing ammonia levels in pig housing of various designs and construction. The pig building's minimum ventilation rate should maintain a 50-70% relative humidity...
Influence of environmental factors on concentrations and inorganic content of aerial dust in swine finishing buildings
The total mass concn. of aerial dust particles in 11 pig finishing units averaged 8.1 mg/msuperscript 3 during a 9-month survey and exceeded the 15 mg/msuperscript 3 US Occupational Safety and Health...
Air quality in a swine nursery
The effects of ventilation rate on air quality were investigated in 2 experiments, one with reduced ventilation and one with a cold air draught. Carbon dioxide, ammonia, hydrogen sulphide,...
Field estimates of ammonia volatilization from swine manure by a simple micrometeorological technique
An existing numerical model for particle diffusion into air from ground-based sources was recalculated for circular source plots of 7 m diameter. Results showed that a satisfactory relationship...
Air quality in farrowing barns
Concentrations and production rates of major ambient contaminants (moisture, dust particles, carbon dioxide, ammonia and hydrogen sulphide), were established in 5 farrowing rooms. Comparison between...
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