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Full-Text Articles in Life Sciences
Effects Of Livestock Grazing Management Practices On Greater Sage-Grouse Nest And Female Survival, Seth J. Dettenmaier
Effects Of Livestock Grazing Management Practices On Greater Sage-Grouse Nest And Female Survival, Seth J. Dettenmaier
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The decline in greater sage-grouse (Centrocercus urophasianus; sage-grouse) populations across western North America has been primarily attributed to loss and fragmentation of their sagebrush (Artemisia spp.) habitats. This habitat loss is largely the result of increased human activities, with grazing by domestic livestock as the most predominant land use across the sagebrush ecosystem in North America. The goal of my research was to increase our understanding of the effects of livestock on sage-grouse populations. I reviewed the peer-reviewed literature for all published studies that reported potential effects of grazing on grouse species worldwide. I found that there …
Managing Dietary Protein In Cattle As A Means Of Reducing Ammonia Emissions To Improve Air Quality, Ashley Houston
Managing Dietary Protein In Cattle As A Means Of Reducing Ammonia Emissions To Improve Air Quality, Ashley Houston
Undergraduate Honors Capstone Projects
Particulate matter pollution has become a subject of great concern across the globe. Emissions data has revealed that the agricultural sector is making large contributions to particulate matter through ammonia emissions. Beef and dairy cattle are responsible for producing nearly 50% of annual ammonia emissions in the United States. These animals are often fed amounts of dietary protein that exceed recommendations, resulting in increased excretion of urea and ammonia. These compounds combine with nitrogen oxides in the atmosphere to form PM2.5: particulate matter measuring less than 2.5 microns in diameter. Research has shown that through proper dietary management …