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 8 of 8 for “"livestock operations"”.
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Precision diet formulation incorporating isoenergetic lipid and carbohydrate supplementations as water intake mitigation strategies for Holstein nursing bull calves
As resource availability continues to diminish, livestock operations and producers will continue to garner unfounded and poor-evidenced attacks. Regardless of these inconsistencies and poorly evidenced attacks towards livestock production, many producers and scientists worldwide continue pursuing …
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Comparison of Biofilm Media in Reciprocating Biofilters Treating Dairy Flushwater
… manage nutrients, mainly nitrogen, problems at livestock operations such as swine farms and dairies. Past studies have demonstrated that ReCip is more adept at total nitrogen (TN) removal than traditional subsurface flow wetland systems. The traditional substrate used to attach biomass was rock …
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Enhanced Biological Phosphorus Removal from Dairy Manure to Meet Nitrogen:Phosphorus Crop Nutrient Requirements
Over the last two decades, livestock operations have become highly concentrated due to growing trends towards larger, more confined facilities and a decrease in cropland on smaller farms. This has led to greater amounts of excess manure nutrients on farms, increasing the potential for nutrient …
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Passerine Use of Grasslands Managed With Two Grazing Regimes on the Missouri Coteau in North Dakota
… Coteau PPN project areas benefited landowner livestock operations without negatively impacting grassland passerines.
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Survival and Overland Transport of Fecal Coliform under Canadian Prairie Conditions
… the economic advantages; wintering grounds for livestock operations can have profound impacts on water quality. Animal waste accumulated during winter can be transported to surface water with spring snowmelt. The potential impact on snowmelt runoff quality of winter in-field bale-grazing under …
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Monitoring and modelling diurnal and seasonal odour and gas emission profiles for swine grower/finisher rooms
To address odour and gas problems generated by livestock facilities, air dispersion models have been used to determine reasonable science-based setback distances between the livestock operations and the neighbouring residences. However, none of the existing models consider diurnal, seasonal and …
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Effect of Composting on the Prevalence of Antibiotic Resistant Bacteria and Resistance Genes in Cattle Manure
… use, and use in the U.S., is dedicated towards livestock, where they are used to promote growth, treat, or prevent disease. Given that exposure to antibiotics selects for antibiotic resistant bacteria (ARBs) and can stimulate the horizontal transfer of their associated antibiotic resistance …
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A Process-Based Nutrient Model for the Bedded Manure Pack of Confined Beef Systems
<p>Manure management is of growing concern for beef cattle producers and the general public. The overall objective of this research was to develop a process-based model that predicts concentration and gaseous emission from the bedded manure pack of a confined beef cattle system, with respect to …