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Articles 1 - 6 of 6
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Surveillance Of Ticks Parasitizing Tennessee Beef Cattle And Investigations Into The Microbial Communities Of Cattle Associated And Questing Amblyomma Maculatum, David Paul Theuret
Surveillance Of Ticks Parasitizing Tennessee Beef Cattle And Investigations Into The Microbial Communities Of Cattle Associated And Questing Amblyomma Maculatum, David Paul Theuret
Masters Theses
Despite the risks that ticks and tick-borne disease pose to the beef cattle industry, many Tennessee producers are unaware of the dangers they represent. This mindset could facilitate the invasion and establishment of exotic ticks and pathogens that would devastate the cattle industry. Current control practices rely on chemical methods, which are not effective long-term; therefore, investigations into creating an integrated approach to control would create more sustainable methods. This study aims to address this through two objectives: The first is to determine the species composition, seasonal prevalence, geographic distribution and diversity of ticks on Tennessee cattle. The second is …
Analyzing The Utilization And Trade Of Distillers’ Dried Grains With Solubles, Maria Celeste De Matteis
Analyzing The Utilization And Trade Of Distillers’ Dried Grains With Solubles, Maria Celeste De Matteis
Masters Theses
The production and consumption of distillers’ dried grains with solubles (DDGS), a coproduct of corn-based ethanol, has rapidly grown over the last decade in the United States (U.S.) and lately in other countries that prompt biofuel production, such as Argentina. DDGS has a more concentrated nutritional value relative to traditional feed grains and can be used in feed rations to meet the energy and protein requirements. In the first study, I evaluated the factors that determine the exports of U.S. DDGS, while the second study focused on the effects of the inclusion of DDGS in the feed rations of swine …
Effect Of Different Cover Crop Species On Crop Production And Soil Health, Mingwei Chu
Effect Of Different Cover Crop Species On Crop Production And Soil Health, Mingwei Chu
Masters Theses
Integration of cover crops (CCs) can provide several benefits to row crop production systems. Comprehensive studies to understand the effectiveness of a mixture of CCs versus single or double species CCs are limited. In this study, we evaluated the effect of single and double species CCs, and the soil health mix (SHM, a combination of five species recommended by the United States Department of Agriculture) on soil quality attributes and crop production in western Tennessee. The results showed an increase in soybean yield after 3-years of SHM treatment, which corresponded with significantly higher soil moisture content and soil inorganic nitrogen …
Evaluation Of Hall’S Panicgrass (Panicum Hallii Vasey) As A Model System For Genetic Modification Of Recalcitrance In Switchgrass (Panicum Virgatum (L.)), Joshua Nathaniel Grant
Evaluation Of Hall’S Panicgrass (Panicum Hallii Vasey) As A Model System For Genetic Modification Of Recalcitrance In Switchgrass (Panicum Virgatum (L.)), Joshua Nathaniel Grant
Masters Theses
While switchgrass (Panicum virgatum (L.)) has long been recognized as a viable bioenergy feedstock, it and other plants have cell walls with recalcitrance to processing. Recalcitrance is recognized as a major barrier to broad adoption of switchgrass and other feedstocks for cellulosic bioenergy. In an effort to reduce recalcitrance, transgenic plants have been generated with altered cell wall phenotypes such as reduced lignin. Unfortunately, stable transformation of switchgrass and other C4 grasses is time intensive, costly, and genetic analysis is further complicated by polyploid genomic structures. Unlike switchgrass, which can be tetraploid to octoploid, a closely related species, Hall’s …
Spatial And Temporal Heterogeneity Of Carbon Storage And Optimal Provision Of Carbon Storage, Amine Mohamed Ben Ayara
Spatial And Temporal Heterogeneity Of Carbon Storage And Optimal Provision Of Carbon Storage, Amine Mohamed Ben Ayara
Masters Theses
Human activity, particularly the conversion of natural land cover into human-dominated cover types, is putting increasing pressure on the health of the global ecosystem. Loss of forestland is a major contributor to greenhouse gas (GHG) emissions, which cause climate change because forests can help sequester GHG emission in the atmosphere. However, mitigating climate change by sequestering carbon through reforestation and/or avoiding deforestation is an appealing option because of the potential scale of such sequestration, the possible cost advantages over other mitigation efforts, and the opportunity it provides to incentivize the sustainable use of rural lands. Incentive payments can support forest-based …
Essays On Protected Area Size: Effects On Ecological And Economic Effectiveness, Kristen Marie Thiel
Essays On Protected Area Size: Effects On Ecological And Economic Effectiveness, Kristen Marie Thiel
Masters Theses
Faced with continuing threats to biodiversity, governments are increasingly seeking to expand protected areas. Financial resources are limited, which often spurs conservation planners to prioritize locations for future protection. Thus, prioritization of protected areas is increasingly being evaluated based on the return on investment (ROI) they offer. This thesis consists of two essays analyzing the land acquisitions made by the world’s largest conservation organization, The Nature Conservancy (TNC). In the first essay, entitled “Effects of Protected Area Size on Conservation Return on Investment,” the increase in effective mesh size per dollar invested to acquire a parcel was greater for larger …