Animal Well-being
Comparison of Management Factors Affecting Aggression in Group Housed Sows
January 24, 2008By Harold Gonyou
If sows are maintained in similar groups from gestation to gestation, aggression is reduced compared to the other regrouping strategies tested. However, this method would not always be practical....
Animal Well-being
Comparison of Handling Attributes and Physiological Indicators of Stress and Welfare During Marketing of Pigs from Conventional Small Pens and Large Pen Auto Sort
January 4, 2008By Harold Gonyou
When handled through the same facilities, pigs from large and small groups required similar levels of force during handling. Difficult groups of pigs were encountered in both treatments. However,...
Swine Health - PRRS
Analysis of prevalent environmental conditions in cases of suspected PRRSV lateral transmission between pig farms
January 4, 2008By Robert Morrison
It is not uncommon for swine herds to become infected with PRRS virus with no obvious source of the infection. In such cases, the producer and veterinarian having explored all possible routes of...
Animal Science
Oxygen consumption and energy digestibility of soybean meal and corn or corn co-product diets fed to grow-finish swine
January 2, 2008By Wendy Powers
Diets containing corn or corn co-products were fed to swine over 6 feeding phases, starting at 18 kg bodyweight and concluding at market weight. The corn co-product diets contained increasing levels...
The effects of manure application on soil aggregation
January 1, 2008By C. S. Wortmann
Surface application of manure may increase the risk of phosphorus loss in runoff. Manure application, however, often results in increased soil aggregate stability with reduced runoff and erosion and,...
Antibiotic Losses in Leaching and Surface Runoff from Manure-Amended Agricultural Land
January 1, 2008By H. Dolliver
A 3-yr field study quantified leaching and runoff losses of antibiotics from land application of liquid hog (chlortetracycline and tylosin) and solid beef (chlortetracycline, monensin, and tylosin)...
Nitrogen mass balance in fields irrigated with liquid swine
January 1, 2008By S. C. Whalen
Over the past 15-years, swine-producing
confined animal feeding operations (CAFOs) have
proliferated throughout the Southeastern United
States, particularly in North Carolina. Waste at...
ELISA for Sulfonamides and Its Application for Screening in Water Contamination
January 1, 2008By W. SHELVER
Two enzyme-linked immunosorbent assays (ELISAs) were tested for their suitability for detecting sulfonamides in wastewater from various stages in wastewater treatment plants (WWTPs), the river into...
Reuse of concentrated animal feeding operation wastewater on agricultural lands
January 1, 2008
Concentrated animal feeding operations (CAFOs) generate large volumes of manure and manure contaminated wash and run-off water. When applied to land at agronomic rates, CAFO wastewater has the...
Evaluating phosphorus loading from repeated manure applications to two Saskatchewan soils
January 1, 2008
An understanding of the impact of repeated manure additions on soil phosphorus (P) is needed to determine appropriate manure application rates for prairie soils and manure sources. The objective of...
Effect of the presence of the antimicrobial tylosin in swine waste on anaerobic treatment
January 1, 2008
An anaerobic sequencing batch reactor (ASBR), seeded with a biomass inoculum that
previously had not been exposed to the macrolide antimicrobial tylosin (mixture of Tylosin
A, B, C, and D), was...
Greenhouse gas emission reduction and environmental quality improvement from implementation of aerobic waste treatment systems in swine farms
January 1, 2008By Vanotti
Trading of greenhouse gas (GHG) emission reductions is an attractive approach to help producers implement cleaner treatment technologies to replace current anaerobic lagoons. Our objectives were to...
