Daniel S. Andersen
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View article: Manure use benefits and barriers according to agricultural stakeholders
Manure use benefits and barriers according to agricultural stakeholders Open
Using manure as a crop fertilizer promotes recycling of locally available organic nutrients and reduces needs for manufactured inorganic fertilizers. However, the factors that motivate and constrain manure use are unclear. To explore stake…
View article: The Design and Testing of a Field Operations Visualizer
The Design and Testing of a Field Operations Visualizer Open
Achieving high yields in the large-scale agricultural systems that dominate the US landscape requires critical machine-enabled field operations to be executed in narrow windows of time. Novel cropping systems hold great promise to increase…
View article: Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion Systems
Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion Systems Open
Livestock in the state of Iowa, United States (US) produce over 50 × 106 Mg of wet-basis manure yearly. Biogas production from manure’s anaerobic digestion (AD) can reduce greenhouse gas emissions, control odors, and provide renewable ener…
View article: Nutrient recovery in cultured meat systems: Impacts on cost and sustainability metrics
Nutrient recovery in cultured meat systems: Impacts on cost and sustainability metrics Open
A growing global meat demand requires a decrease in the environmental impacts of meat production. Cultured meat (CM) can potentially address multiple challenges facing animal agriculture, including those related to animal welfare and envir…
View article: Comparison of antibiotic resistance genes in swine manure storage pits of Iowa, USA
Comparison of antibiotic resistance genes in swine manure storage pits of Iowa, USA Open
Antimicrobial resistance (AMR) can develop in deep-pit swine manure storage when bacteria are selectively pressured by unmetabolized antibiotics. Subsequent manure application on row crops is then a source of AMR into soil and downstream r…
View article: Novel quota and tax regime design approach for green transition: A case study on Switzerland's aviation industry
Novel quota and tax regime design approach for green transition: A case study on Switzerland's aviation industry Open
In the present study, a novel approach for calculating optimal quota and tax regimes is investigated. A meta-heuristic framework has been developed to find the optimal quota regime for the national or worldwide aviation industry. The minim…
View article: Evaluating the impact of midwestern cropping systems on soil health and soil carbon dynamics
Evaluating the impact of midwestern cropping systems on soil health and soil carbon dynamics Open
Crop producers are becoming more interested in improving the health of their soils. The effects of cropping practices on soil health have been studied extensively, but much uncertainty remains. This study investigated the impacts of standa…
View article: Microbial assemblages and methanogenesis pathways impact methane production and foaming in manure deep-pit storages
Microbial assemblages and methanogenesis pathways impact methane production and foaming in manure deep-pit storages Open
Foam accumulation in swine manure deep-pits has been linked to explosions and flash fires that pose devastating threats to humans and livestock. It is clear that methane accumulation within these pits is the fuel for the fire; it is not un…
View article: Mitigation of Gaseous Emissions from Stored Swine Manure with Biochar: Effect of Dose and Reapplication on a Pilot-Scale
Mitigation of Gaseous Emissions from Stored Swine Manure with Biochar: Effect of Dose and Reapplication on a Pilot-Scale Open
Rural communities are affected by gaseous emissions from intensive livestock production. Practical mitigation technologies are needed to minimize emissions from stored manure and improve air quality inside barns. In our previous research, …
View article: Mitigation of Gaseous Emissions from Stored Swine Manure with Biochar: Effect of Dose and Reapplication on A Pilot-Scale
Mitigation of Gaseous Emissions from Stored Swine Manure with Biochar: Effect of Dose and Reapplication on A Pilot-Scale Open
The rural communities are affected by gaseous emissions from intensive livestock production. Practical mitigation technologies are needed to minimize emissions from stored manure and improve air quality inside barns. In our previous resear…
View article: Mitigation of Odor, NH3, H2S, GHG, and VOC Emissions With Current Products for Use in Deep-Pit Swine Manure Storage Structures
Mitigation of Odor, NH3, H2S, GHG, and VOC Emissions With Current Products for Use in Deep-Pit Swine Manure Storage Structures Open
Odorous gas emissions from swine production have been a concern for neighbors and communities near livestock farms. Manure storage is one of the main sources of gaseous emissions. Manure additive products are marketed as a simple solution …
View article: Emissions from Swine Manure Treated with Current Products for Mitigation of Odors and Reduction of NH3, H2S, VOC, and GHG Emissions
Emissions from Swine Manure Treated with Current Products for Mitigation of Odors and Reduction of NH3, H2S, VOC, and GHG Emissions Open
Odor and gaseous emissions from the swine industry are of concern for the wellbeing of humans and livestock. Additives applied to the swine manure surface are popular, marketed products to solve this problem and relatively inexpensive and …
View article: Dietary composition and particle size effects on swine manure characteristics and gas emissions
Dietary composition and particle size effects on swine manure characteristics and gas emissions Open
Nutrients excreted from animals affect the nutritive value of manure as a soil amendment as well as the composition of gases emitted from manure storage facilities. There is a dearth of information, however, on how diet type in combination…
View article: PSXI-3 Impact of carbohydrate source on manure and air emissions from swine diets
PSXI-3 Impact of carbohydrate source on manure and air emissions from swine diets Open
Dietary fiber is known to reduce ammonia emissions, but little is known about its effect on emissions of major odorants. An experiment was conducted to determine the effect fiber and fiber source has on manure composition and gas emissions…
View article: Quantification of Site Layout and Filter Characteristics on Primary Filter Airflow Reduction on Commercial Swine Sites in Iowa
Quantification of Site Layout and Filter Characteristics on Primary Filter Airflow Reduction on Commercial Swine Sites in Iowa Open
Fresh air intake filtration is used on commercial swine breeding-gestation-farrowing farms to reduce the frequency of airborne infectious agents. For swine producers, porcine reproductive and respiratory syndrome virus (PRRSV), influenza A…
View article: Impact of narasin on manure composition, microbial ecology, and gas emissions from finishing pigs fed either a corn-soybean meal or a corn-soybean meal-dried distillers grains with solubles diets
Impact of narasin on manure composition, microbial ecology, and gas emissions from finishing pigs fed either a corn-soybean meal or a corn-soybean meal-dried distillers grains with solubles diets Open
An experiment was conducted to determine the effect of feeding finishing pigs a corn-soybean (CSBM) diet or a CSBM diet supplemented with 30% dried distillers grains with solubles (DDGS), in combination with or without a growth-promoting i…
View article: Pilot-Scale Testing of Non-Activated Biochar for Swine Manure Treatment and Mitigation of Ammonia, Hydrogen Sulfide, Odorous Volatile Organic Compounds (VOCs), and Greenhouse Gas Emissions
Pilot-Scale Testing of Non-Activated Biochar for Swine Manure Treatment and Mitigation of Ammonia, Hydrogen Sulfide, Odorous Volatile Organic Compounds (VOCs), and Greenhouse Gas Emissions Open
Managing the environmental impacts associated with livestock production is a challenge for farmers, public and regulatory agencies. Sustainable solutions that take into account technical and socioeconomic factors are needed. For example, t…
View article: Impact of Dietary Carbohydrate and Protein Source and Content on Swine Manure Foaming Properties
Impact of Dietary Carbohydrate and Protein Source and Content on Swine Manure Foaming Properties Open
Diet ingredients are thought to contribute to foaming problems associated with swine manure stored in deep-pit systems. Two experiments explored the impact of protein and carbohydrate sources and levels in swine diets on the physicochemica…
View article: Summary of performance data for technologies to control gaseous, odor, and particulate emissions from livestock operations: Air management practices assessment tool (AMPAT)
Summary of performance data for technologies to control gaseous, odor, and particulate emissions from livestock operations: Air management practices assessment tool (AMPAT) Open
The livestock and poultry production industry, regulatory agencies, and researchers lack a current, science-based guide and data base for evaluation of air quality mitigation technologies. Data collected from science-based review of mitiga…
View article: A Runoff and Sediment Routing Model for Open Lot Beef Feeding Facilities
A Runoff and Sediment Routing Model for Open Lot Beef Feeding Facilities Open
Feedlot runoff is a potential environmental contaminant and requires proper management to minimize impact on water quality. In designing runoff management systems, accurately assessing the amount of runoff that will be generated is of fore…
View article: What Is It Worth? The Economic Value of Manure Testing
What Is It Worth? The Economic Value of Manure Testing Open
In many ways, farming is often an exercise in decision-making in uncertain conditions. Agricultural systems are complex, highly variable, and conditions are continuously changing. Moreover, the variable conditions mean that the farmer ofte…
View article: Development and Use of a Survey Tool to Determine the Efficacy of Livestock Truck Washes in Iowa
Development and Use of a Survey Tool to Determine the Efficacy of Livestock Truck Washes in Iowa Open
The transmission of disease among livestock farms could be addressed by the efficiency of truck washes to clean and disinfect trailers used for transporting animals. Collecting swab samples from trailers and cabs of identified truck wash t…
View article: Bacterial community composition in manure from swine fed rations with various protein and carbohydrate sources.
Bacterial community composition in manure from swine fed rations with various protein and carbohydrate sources. Open
The objective of this study was to evaluate the bacterial community composition in manure collected from finishing swine in two controlled feeding trials with varying protein and carbohydrate sources and to assess the potential to produce …