Page 179 – 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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Environment - Manure Storage / Application
Manure incorporation equipment effects on odor, residue cover, and crop yield
Field experiments in undisturbed (no-till) soyabean and maize residue were conducted to evaluate six liquid swine manure application/incorporation methods. The methods were injection with a...
Nitrification options for pig wastewater treatment
Nitrification is a necessary and often limiting process in animal waste treatment for removal of nitrogen as N-2 through biological nitrification/denitrification systems. We evaluated three...
Environment - Air
Liquid balance model for swine waste management systems using single-stage anaerobic lagoons
The most important wastewater operation for farmers using lagoons to treat swine waste is maintaining the liquid level within the operational levels to avoid overflows and to satisfy the water demand...
N-management and crop rotation effects on yield and residual soil nitrate levels
Swine production facilities are becoming more concentrated in Iowa, and public is concerned about the impact of using swine manure for crop production on soil and water quality. This field study was...
Forage characteristics, steer performance, and water quality from bermudagrass pastures fertilized with two levels of nitrogen from swine lagoon effluent
Four 0.8-ha pastures of bermudagrass (Cynodon dactylon [L.] Pers.) were fertilized with either 456 or 873 kg/ha of nitrogen (N) from swine lagoon effluent (two replicates per treatment) and grazed by...
Methane emissions from an anaerobic swine lagoon
Gaseous methane (CH4) emissions from a swine waste holding lagoon were determined periodically during the year. Micrometeorological techniques were used in order that emission rates from the lagoon...
Effects of frequency and quantity of sprinkling canola oil on dust reduction in swine buildings
Dust concentrations in animal buildings can be reduced by sprinkling a small quantity of canola (rapeseed) oil on the floor. The efficiency of dust reduction was expected to be dependent on the...
Anaerobic decomposition of swine manure and ammonia generation in a deep pit
This article reports a laboratory study of swine manure decomposition in a deep pit. Distributions of solids, organic matter, pH, and ammonia in fresh swine manure after 12 h settling in a 1.2 m...
Evaluating the use of straw and other floating materials to control odor and gases from pig manure storage units
The use of various floating covers on commercial manure storage units to control odour and H2S emissions was evaluated and the management requirements to maintain the covers were identified. When...
An Integrated Index of Electrical Energy Use in Canadian Agriculture with Implications for Greenhouse Gas Emissions
Electricity is fundamental to many farm chores. In this paper quantitative indices of electrical energy use were developed which reflect direct on-farm decisions for measures that farmers can adopt...
Reduction of odor and volatile substances in pig slurries by using pit additives
The effects of five commercial pit additive products on the release of odour nuisance and volatile compounds from swine manure were examined. The changes of pH, volatile fatty acids, total solids,...
Characteristics of phototrophic and non-phototrophic lagoons for swine manure
Odors are a major result of inadequately sized and mismanaged anaerobic lagoons. However, purple or pink colored lagoons, indicating the presence of phototrophic purple bacteria, are less likely to...
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