Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Pasture systems"”.
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Honey Bee Colony Resource Acquisition, Population Growth, and Pollen Foraging in Diversified Native Grass-Wildflower Grazing System
… stabilization. However, conventional tall fescue pastures, which dominate the southeastern United States, limit pollinator habitat, reduce ecosystem services, and diminish cattle productivity if infected with toxic endophytes. Establishing wildflowers (WFs) and native warm season grasses (NWSGs) …
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Honeylocust and Black Walnut Tree Products within a Temperate Appalachian Silvopasture
… or black walnut trees (Jugulans nigra L.) into pasture systems may improve soil and water quality, increase biodiversity, and diversify farm incomes. Studies of productivity and management are needed to understand the trees' potential. Research was conducted in the agroforestry demonstration …
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Hair Sheep Production in Temperate, Deciduous Appalachian Silvopastures
… increase the output from livestock production systems. Silvopasture production offers solutions to many management issues associated with grazing systems in the Appalachian region. Several tree species have been proposed for silvopastures in humid temperate regions, but little data comparing …
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Molecular and Physiological Aspects of Arbuscular Mycorrhizal Symbiosis with near-Isogenic White Clover: A Gene Expression Study
… L.) is an important component of low input pasture systems and can form effective associations with both nitrogen-fixing Rhizobium and phosphate-scavenging arbuscular mycorrhizal fungi (AMF). Understanding the genetic control of plant-AM interactions will allow clover breeders to develop …
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Effects of Outdoor Access and Season on Mastitis Pathogen Distribution and Milk Quality Parameters in Dairy Herds in Western Canada
… pathogen distribution across different housing systems in Alberta (AB) and British Columbia (BC). This thesis characterises mastitis pathogen distribution in Western Canada through: (1) a background review of dairy production systems, housing practices, and udder health determinants, (2) a …
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Linking Cattle, Forage, and Tree Production in Silvopastures
Silvopasture is the intentional integration of trees with forages and livestock. In Blackstone, Virginia a silvopasture management plan was created in a thinned, timber stand seeded with a cool-season forage mixture. Treatment pastures for this study included an open pasture, a thinned pine …
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From soil to groundwater: Assessing the leaching potential of cadmium across gradients of soil types and land-uses
… the application of conventional methods in these systems. Proposed research: A realistic assessment of the environmental impact of fertiliser-derived contaminants requires non-perturbing and sensitive sampling techniques for detecting contaminants of interest. Diffusive gradients in thin films …
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Assessing Impacts of Winter-hay Feeding on Soil and Forage Nutrient Dynamics in a Rotationally-Grazed Pasture System in Arkansas
… rural land area was used for grazing (i.e., pastureland or rangeland) ruminant animals in 2017, constituting the largest private land use group. The expansive nature of these lands means that grazing and pasture management decisions have potential to impact water quality as well as profit …
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REDUCING ANTIMICROBIAL RESISTANCE RISKS AND ANTIBIOTIC USAGE IN DAIRY FARMING: MICROBIOLOGICAL INSIGHTS AND ALTERNATIVE STRATEGIES
… in food animals, especially in dairy livestock systems. This thesis summarizes four research projects that investigate the impact of AMR in both animals and humans and explore the reduction of antibiotic use in intramammary infections, dairy farms, and livestock. The first study provides an …
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Precision Technologies for Small/Medium Sized Businesses Throughout the Beef Value Chain
… on large farms and on intensive production systems. The development of PLF technologies to support the sustainability of small- to medium-sized businesses across the beef value chain must be responsive to the unique needs and characteristics of these businesses and their operators. The …
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Quantifying Greenhouse Gas Emissions and Ammonia Volatilization from Soil Amended with Excreta from Ruminants Fed Alternative Forage-based Diets
<p>Forage-based ruminant diets supplemented with condensed tannins or polyphenolic-containing legumes may alter nitrogen (N) metabolism in the animal and reduce gas emissions from soil receiving excreta. The objective of the study was to determine if soil receiving urine or manure from sheep fed …