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Articles 271 - 300 of 4221
Full-Text Articles in Life Sciences
2d Respiratory Sound Analysis To Detect Lung Abnormalities, Rafia Sharmin Alice, Kc Santosh
2d Respiratory Sound Analysis To Detect Lung Abnormalities, Rafia Sharmin Alice, Kc Santosh
SDSU Data Science Symposium
Abstract. In this paper, we analyze deep visual features from 2D data representation(s) of the respiratory sound to detect evidence of lung abnormalities. The primary motivation behind this is that visual cues are more important in decision-making than raw data (lung sound). Early detection and prompt treatments are essential for any future possible respiratory disorders, and respiratory sound is proven to be one of the biomarkers. In contrast to state-of-the-art approaches, we aim at understanding/analyzing visual features using our Convolutional Neural Networks (CNN) tailored Deep Learning Models, where we consider all possible 2D data such as Spectrogram, Mel-frequency Cepstral Coefficients …
Session 2: The Effect Of Boom Leveling On Spray Dispersion, Travis A. Burgers, Miguel Bustamante, Juan F. Vivanco
Session 2: The Effect Of Boom Leveling On Spray Dispersion, Travis A. Burgers, Miguel Bustamante, Juan F. Vivanco
SDSU Data Science Symposium
Self-propelled sprayers are commonly used in agriculture to disperse agrichemicals. These sprayers commonly have two boom wings with dozens of nozzles that disperse the chemicals. Automatic boom height systems reduce the variability of agricultural sprayer boom height, which is important to reduce uneven spray dispersion if the boom is not at the target height.
A computational model was created to simulate the spray dispersion under the following conditions: a) one stationary nozzle based on the measured spray pattern from one nozzle, b) one stationary model due to an angled boom, c) superposition of multiple stationary nozzles due an angled boom, …
Refining The Moose Serum Progesterone Threshold To Diagnose Pregnancy, Madeline Struck, William J. Severud, Yvette M. Chenaux-Ibrahim, Edmund J. Isaac, Janine L. Brown, Seth A. Moore, Tiffany M. Wolf
Refining The Moose Serum Progesterone Threshold To Diagnose Pregnancy, Madeline Struck, William J. Severud, Yvette M. Chenaux-Ibrahim, Edmund J. Isaac, Janine L. Brown, Seth A. Moore, Tiffany M. Wolf
Natural Resource Management Faculty Publications
Pregnancy determination is necessary for sound wildlife management and understanding population dynamics. Pregnancy rates are sensitive to environmental and physiological factors and may indicate the overall trajectory of a population. Pregnancy can be assessed through direct methods (rectal palpation, sonography) or indicated using hormonal assays (serum progesterone or pregnancy-specific protein B, fecal progestogen metabolites). A commonly used threshold of 2 ng/ml of progesterone in serum has been used by moose biologists to indicate pregnancy but has not been rigorously investigated. To refine this threshold, we examined the relationship between progesterone concentrations in serum samples and pregnancy in 87 moose ( …
Trophically Integrated Ecometric Models As Tools For Demonstrating Spatial And Temporal Functional Changes In Mammal Communities, Rachel A. Short, Jenny L. Mcguire, P. David Polly, A. Michelle Lawing
Trophically Integrated Ecometric Models As Tools For Demonstrating Spatial And Temporal Functional Changes In Mammal Communities, Rachel A. Short, Jenny L. Mcguire, P. David Polly, A. Michelle Lawing
Natural Resource Management Faculty Publications
We are in a modern biodiversity crisis that will restructure community compositions and ecological functions globally. Large mammals, important contributors to ecosystem function, have been affected directly by purposeful extermination and indirectly by climate and land-use changes, yet functional turnover is rarely assessed on a global scale using metrics based on functional traits. Using ecometrics, the study of functional trait distributions and functional turnover, we examine the relationship between vegetation cover and locomotor traits for artiodactyl and carnivoran communities. We show that the ability to detect a functional relationship is strengthened when locomotor traits of both primary consumers (artiodactyls, n …
Whole Genome Sequencing For Identification Of Putative Causative Alleles For Hemochromatosis In Horses, Anna M. Rauber-Ramos
Whole Genome Sequencing For Identification Of Putative Causative Alleles For Hemochromatosis In Horses, Anna M. Rauber-Ramos
Schultz-Werth Award Papers
Hemochromatosis is liver disorder in which excess iron is stored in the liver, leading to iron overload and extensive liver damage that can prove fatal. Based on human precedence, a genetic cause for idiopathic hemochromatosis in horses is suspected. Two horses with hemochromatosis were whole genome sequenced, with variants in candidate genes prioritized in analyses of potential pathogenicity. No clear putative variants were found to be present in both horses, suggesting an etiology more complex than the initially suspected Mendelian inheritance. A heterozygous nonsense mutation in STEAP3 metalloreductase (STEAP3) was identified as a potential contributor to hemochromatosis in one of …
Weed-Induced Crop Yield Loss: A New Paradigm And New Challenges, David Horvath, Sharon A. Clay, Clarence J. Swanton, James V. Anderson, Wun S. Chao
Weed-Induced Crop Yield Loss: A New Paradigm And New Challenges, David Horvath, Sharon A. Clay, Clarence J. Swanton, James V. Anderson, Wun S. Chao
Agronomy, Horticulture and Plant Science Faculty Publications
Direct competition for resources is generally considered the primary mechanism for weed-induced yield loss. A re-evaluation of physiological evidence suggests weeds initially impact crop growth and development through resource-independent interference. We suggest weed perception by crops induce a shift in crop development, before resources become limited, which ultimately reduce crop yield, even if weeds are subsequently removed. We present the mechanisms by which crops perceive and respond to weeds and discuss the technologies used to identify these mechanisms. These data lead to a fundamental paradigm shift in our understanding of how weeds reduce crop yield and suggest new research directions …
Cover Crop Composition In Long-Term No-Till Soils In Semi-Arid Environments Do Not Influence Soil Health Measurements After One Year, Hunter Bielenberg, Jason D. Clark, Debankur Sanyal, Johnathon Wolthuizen, David Karki, Amin Rahhal, Anthony Bly
Cover Crop Composition In Long-Term No-Till Soils In Semi-Arid Environments Do Not Influence Soil Health Measurements After One Year, Hunter Bielenberg, Jason D. Clark, Debankur Sanyal, Johnathon Wolthuizen, David Karki, Amin Rahhal, Anthony Bly
Agronomy, Horticulture and Plant Science Faculty Publications
Evaluating the influence of grass or broadleaf cover crops on soil health measurements is common in the northern US Midwest. However, the comparison among different cover crop mixtures, including blends of both grass and broadleaf species is limited. In 2018–2020, cover crop experiments were conducted in South Dakota at 11 site-years. Cover crops were planted in the summer after small grains harvest as mixtures of dominantly grasses or broadleaves, a 50/50 grass/broadleaf mixture, and a no cover crop control. Soil and above-ground plant residue samples were collected in the fall before winter termination and in the spring before corn planting. …
A Review On Biogenic Silver Nanoparticles As Efficient And Effective Antidiabetic Agents, Maryam Wahab, Srinivas Janaswamy
A Review On Biogenic Silver Nanoparticles As Efficient And Effective Antidiabetic Agents, Maryam Wahab, Srinivas Janaswamy
Dairy Science and Food Science Faculty Publications: 2022 to Present
The frontiers of nanomedicine are consistently being challenged by the gradually expanding knowledge of the properties of nanoparticles. Toward this end, biogenic synthesis of silver nanoparticles utilizing natural compounds in plants as reducing and capping agents grabbed considerable attention, in lieu of synthetic hazardous physical and chemical techniques. Green synthesis of silver nanoparticles (AgNPs) has proven safe and effective in treating type 2 diabetes mellitus. Currently, biogenic silver nanoparticles have gained importance as safe and efficient antiglycation agents. Therapeutic strategies by employing nanomedicines from natural sources have been initiated to end the limitations of currently available medications for the treatment …
Southeast South Dakota Experiment Farm Annual Progress Report, 2023, Southeast South Dakota Research Farm
Southeast South Dakota Experiment Farm Annual Progress Report, 2023, Southeast South Dakota Research Farm
Agricultural Experiment Station and Research Farm Annual Reports
This is an annual report of the research program at the Southeast South Dakota Research Farm in cooperation with South Dakota Agricultural Experiment Station and the SDSU College of Agriculture, Food, and Environmental Sciences and has special significance for those engaged in agriculture and the agriculturally related businesses in the ten county area of Southeast South Dakota. The results shown are not necessarily complete or conclusive. Interpretations given are tentative because additional data resulting from continuation of these experiments may result in conclusions different from those based on any one year.
Effects Of Anthocyanin Supplementation In Diet On Glycemic And Related Cardiovascular Biomarkers In Patients With Type 2 Diabetes: A Systematic Review And Meta-Analysis Of Randomized Controlled Trials, Ting Mao, Fnu Akshit, Maneesha S. Mohan
Effects Of Anthocyanin Supplementation In Diet On Glycemic And Related Cardiovascular Biomarkers In Patients With Type 2 Diabetes: A Systematic Review And Meta-Analysis Of Randomized Controlled Trials, Ting Mao, Fnu Akshit, Maneesha S. Mohan
Dairy Science and Food Science Faculty Publications: 2022 to Present
Purpose: This study is the first systematic review and meta-analysis based on RCTs on the effects of anthocyanins on patients with type 2 diabetes mellitus (T2DM) and the effect on T2DM-related cardiovascular disease. Methods: RCTs published in English from five electronic databases were evaluated for glycated hemoglobin (HbA1c), fasting blood glucose (FBG), 2-h postprandial blood glucose, fasting insulin, model assessment for insulin resistance, triglycerides (TG), total cholesterol (TC), high-density lipoprotein (HDL) cholesterol, low-density lipoprotein (LDL) cholesterol, systolic blood pressure, and diastolic blood pressure. The quality of the studies was rated (Cochrane Risk of Bias tool) and weighted mean differences were …
The Effects Of Dexamethasone Administration On Physiological, Behavioral, And Production Parameters In Dairy Cows After A Difficult Calving, Turner H. Swartz, Dana Bryant, Hollie Schramm, Allison Duncan, Robin White, Cynthia Wood, Christina Petersson-Wolfe
The Effects Of Dexamethasone Administration On Physiological, Behavioral, And Production Parameters In Dairy Cows After A Difficult Calving, Turner H. Swartz, Dana Bryant, Hollie Schramm, Allison Duncan, Robin White, Cynthia Wood, Christina Petersson-Wolfe
Dairy Science and Food Science Faculty Publications: 2022 to Present
Dairy cows are predisposed to diseases during the postpartum period. Dystocia has been associated with increased risk for disease, which is likely the result of increased tissue trauma and stress during the prolonged parturition. To attenuate the inflammatory response seen in dystocic animals and improve well-being, we assessed the effects of a glucocorticoid, dexamethasone administered within 12 h after calving. Dystocia was defined as a difficult birth resulting in a prolonged calving (≥70 min after the amniotic sac appears) and was monitored through 3 video cameras in the close-up dry-cow pen. Cows meeting the dystocia definition were randomly …
Evaluation Of Reticuloruminal Temperature For The Prediction Of Clinical Mastitis In Dairy Cows Challenged With Streptococcus Uberis, Zelmer Rodriguez, Quinn K. Kolar, Kirby C. Krogstad, Turner H. Swartz, Llkyu Yoon, Barry J. Bradford, Pamela L. Ruegg
Evaluation Of Reticuloruminal Temperature For The Prediction Of Clinical Mastitis In Dairy Cows Challenged With Streptococcus Uberis, Zelmer Rodriguez, Quinn K. Kolar, Kirby C. Krogstad, Turner H. Swartz, Llkyu Yoon, Barry J. Bradford, Pamela L. Ruegg
Dairy Science and Food Science Faculty Publications: 2022 to Present
Automated monitoring devices have become increasingly utilized in the dairy industry, especially for monitoring or predicting disease status. While multiple automated monitoring devices have been developed for the prediction of clinical mastitis (CM), limitations in performance or applicability remain. The aims of this study were to (1) detect variations in reticuloruminal temperature (RRT) relative to an experimental intramammary challenge with Streptococcus uberis and (2) evaluate alerts generated automatically based on variation in RRT to predict initial signs of CM in the challenged cows based on severity of clinical signs and the concentration of bacteria (cfu/mL) in the infected quarter separately. …
Comparing Biofilm Forming Potential Of Listeria Species On Non-Food And Food-Contact Surfaces Of Importance To The Dairy Industry, Hannah Cooper
Comparing Biofilm Forming Potential Of Listeria Species On Non-Food And Food-Contact Surfaces Of Importance To The Dairy Industry, Hannah Cooper
The Journal of Undergraduate Research
Listeria monocytogenes (Lm) is a foodborne pathogen of major safety concerns. This bacterium can resist/adapt to environmental stressors and persist through forming robust biofilms despite dairy plants following stringent surface cleaning protocols. Surface roughness is considered a major factor controlling bacterial attachment and biofilm formation. Food contact surfaces like stainless steel (SS) have low surface roughness for easy cleaning. On the other hand, non-contact surfaces like floors need a rougher surface to ensure employee safety. Hence, we hypothesized that Listeria biofilm formation would be lower on stainless steel compared to clay brick (CB; common flooring material in dairy plants). …
Novel Delivery Systems Of Curcumin And Resveratrol, Mohamed Salem Elfaruk
Novel Delivery Systems Of Curcumin And Resveratrol, Mohamed Salem Elfaruk
Electronic Theses and Dissertations
No abstract provided.
Development Of Probiotic Whipped Cream And Butter Using Whey Protein Hydrolysate-Encapsulated Probiotic Organisms, Kritika Gaba
Development Of Probiotic Whipped Cream And Butter Using Whey Protein Hydrolysate-Encapsulated Probiotic Organisms, Kritika Gaba
Electronic Theses and Dissertations
No abstract provided.
The Impact Of Increasing Dietary Levels Of Hybrid Rye On Growing-Finishing Pig Performance, Carcass Characteristics, And Meat Quality, Caitlyn Sullivan
The Impact Of Increasing Dietary Levels Of Hybrid Rye On Growing-Finishing Pig Performance, Carcass Characteristics, And Meat Quality, Caitlyn Sullivan
Electronic Theses and Dissertations
The objective of this trial was to determine the effects of increasing dietary levels of hybrid rye on growth performance, carcass characteristics, and product quality of growing-finishing pigs. A total of 2,400 barrows and gilts (FAST x PIC 800, initial wt. 44.9 kg) were utilized, as pigs were randomly assigned to one of the four dietary treatments. Diets were corn-soybean based and hybrid rye replaced corn at 0, 40, 70, or 100%. All diets were formulated to meet or exceed the 2012 NRC requirements for all nutrients and fed through a five-phase feeding program (44.9 to 125 kg, respectively). Pigs …
Identifying Optimum Germination Temperatures And Analysis Weights In Seed Testing For Stiff Goldenrod (Solidago Rigida) And River Bulrush (Bolboschoenus Fluviatilis), Rachel Geary
Electronic Theses and Dissertations
Federal and state seed laws require seed lots offered for sale to be tested and labeled with the appropriate information before they can be sold. Those tests are conducted in seed testing labs all around the world. In the United States, accredited seed testing labs follow the Association of Official Seed Analysts (AOSA) Rules for Testing Seeds to provide information for labeling. The rules lack instructions for weights and germination for many native species. Stiff goldenrod (Solidago rigida) and river bulrush (Bolboschoenus fluviatilis) are two species that lack any information required for testing. When seed testing labs use correct weights …
Feeding Strategies To Improve Gastrointestinal Health And Growth Performance Of Confinement Fed Ruminants, Forest Laine Francis
Feeding Strategies To Improve Gastrointestinal Health And Growth Performance Of Confinement Fed Ruminants, Forest Laine Francis
Electronic Theses and Dissertations
The objective of this dissertation was to investigate how feed additives, orally administered direct fed microbials, and dietary management strategies may be beneficial in improving gastrointestinal health and growth performance of confinement fed ruminants. Four studies were conducted using confinement fed steers (n = 3) and wether lambs (n = 1) to determine the effects of the products and management strategies used. The first study was conducted on finishing steers to investigate the effects of increasing doses of an encapsulated butyric acid and zinc supplement (BZ) on growth performance, efficiency of dietary net energy utilization, carcass characteristics, and gastrointestinal health. …
Genome-Wide Association Studies And Advanced Genomic Selection Strategies: Towards The Optimization Of Oat (Avena Sativa L) Breeding, Girma Ayana
Electronic Theses and Dissertations
Oats are important cereal crops worldwide, primarily valued for their nutritional and health benefits. The primary goal of oat breeding programs is to accelerate genetic gain to develop oat varieties with the desired product profiles, with the aim of meeting the needs and expectations of growers, processors, and consumers. Achieving this goal involves conducting extensive and resource-intensive field trials, particularly for traits such as crop yield and grain quality, which are strongly influenced by environmental factors. The availability of cost-effective molecular markers and tools like genome-wide association studies (GWAS) and genomic selection have the potential to accelerate the oat breeding …
Characterization Of Parp1-Dependent Poly-Adp-Ribosylation Of Sprtn, Quincee Simonson
Characterization Of Parp1-Dependent Poly-Adp-Ribosylation Of Sprtn, Quincee Simonson
Electronic Theses and Dissertations
DNA-protein crosslinks (DPCs) are a type of DNA lesion that form when proteins become covalently linked to DNA. It is estimated that replicating cells experience approximately 6,000 DPCs per day per genome during exponential growth (Ruggiano & Ramadan, 2021). If left unrepaired, DPCs can be lethal to cells. For this reason, cells have evolved multiple pathways to repair or bypass DPCs to survive. One such pathway involves SPRTN, a nuclear metalloprotease that plays a key role in the repair of DPCs through direct proteolysis (Lopez-Mosqueda et al., 2016; Vaz et al., 2016). Once SPRTN degrades the bulky protein component of …
Seroprevalence Of Sars-Cov-2 Antibodies Among Rural Healthcare Workers, Jordan Neises
Seroprevalence Of Sars-Cov-2 Antibodies Among Rural Healthcare Workers, Jordan Neises
Electronic Theses and Dissertations
The objective of this longitudinal cohort study was to determine the seroprevalence of antibodies to severe acute respiratory syndrome coronavirus-2 (SARSCoV- 2) in healthcare workers employed at healthcare clinics in three rural counties in eastern South Dakota and western Minnesota from May 13, 2020 through December 22, 2020. Three blood draws were performed at five clinical sites and tested for the presence of antibodies against the SARS-CoV-2 virus. Serum samples were tested for the presence of antibodies using a fluorescent microsphere immunoassay (FMIA), neutralization of SARS-CoV-2 Spike-pseudotyped particles (SARS-CoV-2pp) assay, and serum virus neutralization (SVN) assay. The seroprevalence was determined …
Extraction, Characterization, And Utilization Of Yellow Pea Starch, Abdulmalik Albu Tuwaybah
Extraction, Characterization, And Utilization Of Yellow Pea Starch, Abdulmalik Albu Tuwaybah
Electronic Theses and Dissertations
Dry peas, a leguminous crop, are one of the world's oldest crops, accounting for 35–40% of total pulse trade. Pea starch is an inexpensive source of starch since it can be obtained as a by-product of protein extraction. Recovering the starch from protein isolation streams (i.e., before or after) improves the environmental impact of the protein isolation process. The goal of the study was to transform low-value pea starch into highvalue starch through starch extraction and food application. Two methods of starch extraction were used (47.5% ethanol treatment and SC CO2 + EtOH extraction). Starch samples were analyzed for chemical, …
Building No-Tillage Maize Nitrogen Recommendation Algorithm That Considers Improvements In Soil Health, Dwarika Bhattarai
Building No-Tillage Maize Nitrogen Recommendation Algorithm That Considers Improvements In Soil Health, Dwarika Bhattarai
Electronic Theses and Dissertations
In long-term no-till fields, farmers have reported that less N is required to optimize maize (Zea mays L.) yields in long term no-tillage fields than conventional tillage fields. These reductions may be attributed to improved soil health resulting from increasing soil organic matter, higher soil microbial activities, and improved water and nutrient use efficiency. However, the impact of soil health measurements on fertilizer-N requirement has not been determined. The objective of this dissertation was to compare different regional N recommendation models to measured values and develop a maize fertilizer-N recommendation model, using machine learning approaches, that includes adjustments based on …
Impact Of Virtual Fence Technology On Yearling Steer Behavior, Performance, And Energetic Expenditure, Logan Riley Vandermark
Impact Of Virtual Fence Technology On Yearling Steer Behavior, Performance, And Energetic Expenditure, Logan Riley Vandermark
Electronic Theses and Dissertations
Beef cattle production in the U.S. is largely dependent upon extensive rangelands like the Northern Great Plains. Solutions are needed to meet both the demand of animal-based protein products for a growing world population and the desire for producers to manage for several different ecosystem functions. Virtual fencing (VF) is an emerging precision technology that has the potential to revolutionize livestock management on extensive rangeland systems. However, the need to quantify animal behavior and performance differences using emerging precision technologies, like VenceTM, is ever growing. Thus, the objective of this research was to determine the impact of virtual fencing on …
Modulatory Effects Of Deacetylated Sialic Acids (A Sugar Residue) In Nk-Mediated Cytotoxicity And Targeted Therapy By Receptor Tyrosine Kinase Inhibitors, Mathias Tawiah Anim
Modulatory Effects Of Deacetylated Sialic Acids (A Sugar Residue) In Nk-Mediated Cytotoxicity And Targeted Therapy By Receptor Tyrosine Kinase Inhibitors, Mathias Tawiah Anim
Electronic Theses and Dissertations
The complex nature of the biology of cancer is still an unraveling science, yielding several biomarkers that have served as molecular targets for detection and treatment of the disease. How sugars, glycans, play a role has remained relatively uninvestigated. Sialic acid (Sia), a sugar residue on the surface of cells, has been identified as a hallmark of cancer and its progression. Sialic acid can be highly functionalized, but we became interested in acetylated Sias. This functional group is modulated by Sialate O- acetylesterase (encoded by the gene SIAE) and Sialate O-acetyltransferase (encoded by CASD1), enzymes that play a crucial role …
Relating Predator Community Ecology And Duck Nest Survival In Eastern South Dakota, Samantha R. Fino
Relating Predator Community Ecology And Duck Nest Survival In Eastern South Dakota, Samantha R. Fino
Electronic Theses and Dissertations
As conversion of native grasslands and wetlands to croplands continues in the Prairie Pothole Region (PPR), managers are tasked with maintaining sustainable waterfowl populations. Mesopredator community dynamics is a hypothesized mechanism driving spatiotemporal variation of waterfowl nest survival in the PPR, yet studies often lack detailed information on mesopredator species occurrence and abundance. Therefore, understanding spatial and temporal variation in behaviors of mesopredators provides valuable insights for understanding predator-prey interactions between mesopredators and upland duck nests. Further, differences in a predator community resulting from lethal removal of dominant species may influence composition and space use patterns of subordinate and non-target …
Aphid Parasitoid Wasps (Insecta: Hymenoptera: Braconidae, Aphidiinae) Of The Americas: Species Discovery, Key To Genera, Annotated Checklist, And Summary Of Biology, Abigail Paige Martens
Aphid Parasitoid Wasps (Insecta: Hymenoptera: Braconidae, Aphidiinae) Of The Americas: Species Discovery, Key To Genera, Annotated Checklist, And Summary Of Biology, Abigail Paige Martens
Electronic Theses and Dissertations
No abstract provided.
Tracking Nitrogen Mineralization In The Presence Of Biochar Utilizing Complementary-Method Assays In East Central South Dakota, Andrew Calvin Engel
Tracking Nitrogen Mineralization In The Presence Of Biochar Utilizing Complementary-Method Assays In East Central South Dakota, Andrew Calvin Engel
Electronic Theses and Dissertations
Understanding soil N transformations in agricultural systems of the Northern Great Plains is crucial for guiding effective soil and nutrient management of this vital cropland. While the use of biochar in agriculture has attracted great attention recently, little has been reported on the seasonal dynamics of soil nitrogen (N) transformation and its response to biochar application. A field experiment was conducted over 2 seasons, spring (6/3/19-6/24/19) and summer (7/26/19-8/16/19), using four treatments or control soil, urea (224 kg N/ha), biochar (46,250 kg/ha), and urea+biochar (224 kg N/ha and 46,250 kg/ha, respectively). The results for both seasons showed biochar had no …
The Effects Of Body Weight, Feed Intake, And Weather On Total And Liquid Water Intake In Growing Beef Cattle, Madison Rae Kovarna
The Effects Of Body Weight, Feed Intake, And Weather On Total And Liquid Water Intake In Growing Beef Cattle, Madison Rae Kovarna
Electronic Theses and Dissertations
Research conducted in the 1950s to determine water requirements utilized cattle that vary greatly from the animals being raised today. Additionally, most of the previous research has been conducted on animals being fed for slaughter, rather than bulls or reproductive females. The objective of this study was to analyze the effect of weather variables, dry matter intake (DMI), and body weight (BW) on total daily water intake (TDWI) and liquid daily water intake (LDWI) in growing beef bulls and heifers. Two contemporary groups of Angus and Simmental x Angus bulls and heifers over a two-year period were utilized in this …
Analyzing The Effects Of Winter-Patch Grazing And Wildfire On Insect Order Hymenoptera In The Northern Great Plains, Kaitlin Schieuer
Analyzing The Effects Of Winter-Patch Grazing And Wildfire On Insect Order Hymenoptera In The Northern Great Plains, Kaitlin Schieuer
Schultz-Werth Award Papers
Pollinators are declining globally, threatening global crop production and the biological integrity of many ecosystems. Hymenoptera (the order containing ants, bees, and wasps) is one of the most important insect orders for pollination of a variety of plants, including many crops, and is important as biocontrol for crop pests, and other herbivorous insects. Land management practices affect plant community composition, which influences vegetation-dependent insects, and consequently affects their ecosystem services. Fire and grazing are common practices on working landscapes in the Great Plains. However, how these management techniques impact insect diversity, particularly Hymenopterans, in a mixed-grass prairie ecosystem, is poorly …