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Articles 121 - 150 of 4221
Full-Text Articles in Life Sciences
Enhancing Alfalfa Persistence In Rangelands: Evaluating Morphological Traits Of Medicago Sativa Subsp. Falcata Germplasm, Abdulallah Mohammed Alomair
Enhancing Alfalfa Persistence In Rangelands: Evaluating Morphological Traits Of Medicago Sativa Subsp. Falcata Germplasm, Abdulallah Mohammed Alomair
Electronic Theses and Dissertations
Rangelands cover nearly half of the Earth’s surface, representing about 54% (79 million km2), and occur in different types and climates worldwide. Alfalfa (Medicago sativa L.) is a major component in rangelands and covers about (320 thousand km2), representing about 0.4% of total global rangeland area. As a critical perennial legume crop, alfalfa can improve soil health by fixing approximately 336 kg/ha/year of nitrogen and sequestering up to 614 kg/ha/year of carbon, while enhancing livestock production due to its high content level of vitamins, magnesium, minerals, fiber, and protein. However, environmental stresses such as drought, freezing, and grazing limit alfalfa …
Epidemiological And Diagnostic Approaches For Soybean Cyst Nematode In South Dakota, Nabina Karki
Epidemiological And Diagnostic Approaches For Soybean Cyst Nematode In South Dakota, Nabina Karki
Electronic Theses and Dissertations
Soybean cyst nematode (SCN), Heterodera glycines (HG) Ichinohe, is an endoparasitic nematode and one of the major yield-limiting pathogens of soybean (Glycine max L.) in the United States. Soybean cyst nematode alone accounts for more than $1.5 billion economic loss annually in North America. First reported in the U.S.A. in 1954 in New Hanover County, North Carolina and later in 1995 in Union County, South Dakota. Prior to this study, SCN has spread in 34 counties in the state. As a soil pathogen, which can adapt to most soil conditions under soybean production and beside soybean, it is hosted on …
Evaluation Of Two Stem Boring Insects In South Dakota: A Survey Of Wheat Stem Sawfly And Determining The Impact Of Planting Date On Dectes Stem Borer Infestations In Sunflowers, Khuma Kumari Bhusal
Evaluation Of Two Stem Boring Insects In South Dakota: A Survey Of Wheat Stem Sawfly And Determining The Impact Of Planting Date On Dectes Stem Borer Infestations In Sunflowers, Khuma Kumari Bhusal
Electronic Theses and Dissertations
Wheat, Triticum aestivum L., and sunflower, Helianthus annuus L., are major crops in South Dakota that are threatened by stem-boring insect pests capable of reducing yield and harvestability. In wheat, the wheat stem sawfly, Cephus cinctus Norton, has long been recognized as a destructive pest in the Northern Great Plains, yet its actual distribution within South Dakota remained uncertain. To determine its presence, a two-year survey was conducted across the state from 2023–2024, during which one to four wheat fields per county were sampled using standardized sweep net transects. Wheat stem sawflies were collected only from Harding and Perkins Counties …
Soybean Meal And Soybean Hulls Inclusion In Swine Diets And The Effects On Performance, Carcass Characteristics, Nutrient Digestibility, Manure Nutrient Output, And Economic Impact, Joseph G. Halbur
Electronic Theses and Dissertations
The increasing demand for soybean production in the Midwest, driven by new soybean crushing plants, may reduce the cost of soybean meal (SBM), making it a more accessible and economically viable feed ingredient in swine diets. Replacing dried distillers grains with solubles (DDGS) with SBM and soy hulls at different inclusion rates may influence growth performance, carcass traits, nutrient digestibility, manure nutrient output, pelleting energy use, and economic returns in wean-to-finish pigs. Two experiments were conducted to evaluate these effects. In the first, 566 pigs (PIC × Terminal Duroc, 8.45 and 7.25 kg, 6 weeks of age) were housed in …
Management Strategies To Improve Gastrointestinal Health And Productivity Of Native And Dairy-Derived Steers Fed In Confinement, Becca B. Grimes Francis
Management Strategies To Improve Gastrointestinal Health And Productivity Of Native And Dairy-Derived Steers Fed In Confinement, Becca B. Grimes Francis
Electronic Theses and Dissertations
The objective of this dissertation was to evaluate strategies to mitigate metabolic disorders in confinement fed steers. The first study was conducted on yearling beef steers to investigate the effect of a rumen buffer, calcium magnesium carbonate (CMC), when fed with or without tylosin phosphate (TYL), on growth performance, rumination activity and liver abscess prevalence. Supplementation of a rumen buffer was not an effective alternative to a feed-grade antimicrobial for the control of liver abscesses in beef steers. Supplementation of CMC reduced DMI, thus negatively influencing BW and ADG. No associative effects of CMC and TYL were observed for any …
Impact Of Natural Feed Additives And Monensin Sodium On Growth Performance In Feedlot Cattle, Thiago Lauro Maia Ribeiro
Impact Of Natural Feed Additives And Monensin Sodium On Growth Performance In Feedlot Cattle, Thiago Lauro Maia Ribeiro
Electronic Theses and Dissertations
The objective of this dissertation was to investigate how phytogenic feed additives and a pulse feeding monensin sodium strategy would affect growth performance in the receiving and finishing feedlot phases. Three randomized complete block design feedlot experiments and one pooled analysis were conducted to determine the effects of the feed additives and management strategies used in newly weaned and finishing beef cattle. The objective of these experiments were 1) determine if a blend of capsicum oleoresin, clove essential oil, and garlic essential oil (CCG) influences cattle performance, sera metabolites or health outcomes during the feedlot receiving phase; 2) determine if …
Discovery Of Photosynthetic Oxic N2-Fixation In Cyanobacteria Using Wet Lab And Machine Learning Approaches, James A. Young Iii
Discovery Of Photosynthetic Oxic N2-Fixation In Cyanobacteria Using Wet Lab And Machine Learning Approaches, James A. Young Iii
Electronic Theses and Dissertations
No abstract provided.
In The Footsteps Of Moose: Using Non-Invasive Techniques To Identify Cause-Specific Calf Mortalities And Evaluate Moose (Alces Alces) Movements Pertaining To Mineral Lick Locations On Ancestral Lands Of The Grand Portage Ojibwe, Anna B. Weesies
Electronic Theses and Dissertations
Following a sharp moose (Alces alces; mooz, Anishinaabemowin, Ojibwe language) population decline in northeastern Minnesota during the early 2000s, the Grand Portage Band of Lake Superior Chippewa initiated a long-term moose collaring effort to assess survival and mortality causes. Moose are a culturally important species to the Band, with annual subsistence hunts held on the Reservation and adjacent 1854 Ceded Territory. Continued research guides culturally appropriate management decisions aimed at bolstering calf and adult survival, helping to preserve this moose in Minnesota today and for subsequent generations. Chapter 1 identifies cause-specific calf mortality rates in this multi-predator system using minimally …
Characterizing A Free-Roaming Cat Population To Predict Predation Of Threatened Species In An Island Ecosystem, Sarah Gheida
Characterizing A Free-Roaming Cat Population To Predict Predation Of Threatened Species In An Island Ecosystem, Sarah Gheida
Electronic Theses and Dissertations
No abstract provided.
An Integrated Wetland Condition Index And Environmental Metric Framework For The Prairie Pothole Region, Mercedes L. Batalla
An Integrated Wetland Condition Index And Environmental Metric Framework For The Prairie Pothole Region, Mercedes L. Batalla
Electronic Theses and Dissertations
The USDA-NRCS Agricultural Conservation Easement Program (ACEP) assists landowners with protecting, restoring, and enhancing wetlands. Evaluating wetland conservation efforts is crucial for informing future management decisions. However, assessment frameworks vary across regions and among stakeholders. The Prairie Pothole Region is an ecologically unique landscape characterized by its abundance of wetlands that provide important ecosystem services. To evaluate wetlands enrolled in ACEP, I sampled forty-five semi-permanent wetlands in the Prairie Pothole Region from July – August 2023 and 2024. I selected and sampled twenty-six wetlands enrolled in ACEP. Nineteen additional wetlands not enrolled in ACEP were also sampled; these included nine …
The Formation And Degradation Of Carboxysomes During Heterocyst Development In Filamentous Cyanobacteria, Maxwell Anton Jakubiak
The Formation And Degradation Of Carboxysomes During Heterocyst Development In Filamentous Cyanobacteria, Maxwell Anton Jakubiak
Electronic Theses and Dissertations
Photosynthetic carbon (CO2) fixation and solar-powered nitrogen (N2) fixation are foundational biochemical processes that introduce essential elements into the biosphere. While atmospheric dinitrogen gas (N2) is unusable to most organisms, diazotrophs utilize the nitrogenase enzyme to reduce N2 to ammonia. Because all known nitrogenases are highly susceptible to irreversible oxygen inactivation, N2 fixation is generally incompatible with oxygenic photosynthesis. However, several cyanobacteria are both photosynthetic and diazotrophic, balancing these opposing metabolisms by temporally or spatially separating the respective enzymes. Anabaena sp. PCC 7120 is a model multicellular cyanobacterium that grows in filaments of photosynthetic vegetative cells, which respond to nitrogen …
Isolation, Characterization & Identification Of Cultivable Field Pea Seed Bacteria In South Dakota, Diana Wairimu Njuguna
Isolation, Characterization & Identification Of Cultivable Field Pea Seed Bacteria In South Dakota, Diana Wairimu Njuguna
Electronic Theses and Dissertations
Pea (Pisum sativum L.) is a legume, cultivated on over 25 million acres, particularly in Canada, France, China, Russia, and the United States. Its seeds harbor microbiota including bacteria and fungi, either on the surface (epiphytes) or within seed tissues (endophytes). These microbes can be pathogenic or beneficial, enhancing seedling metabolism and protection from environmental stresses. Characterizing beneficial seed microbiota enables development of microbial inoculants for seed treatment. Seeds from 12 varieties (green or yellow seed coats) were harvested from Sturgis and Dakota Lakes in 2021. Epiphytes were extracted using sonication followed by grinding the seeds to obtain endophytes. Isolates …
Cover Cropping Strategies For Improving Weed Suppression, Yashar Askarzadeh
Cover Cropping Strategies For Improving Weed Suppression, Yashar Askarzadeh
Electronic Theses and Dissertations
Cover crops (CCs) play an essential role in sustainable agriculture by providing multiple ecosystem services. However, adoption remains low due to concerns about economic returns, management complexity, and potential yield reductions in cash crops. Applying CCs uniformly across fields without accounting for spatial variability can result in inconsistent outcomes. A precision cover cropping system (PCCS), which incorporates site-specific management zones (MZs), offers a more targeted approach to improving performance while minimizing costs and uncertainties. This study explores the interaction between CCs and field variability through complementary field and greenhouse experiments. The field experiment demonstrates that field heterogeneity significantly influences CC …
A Multifactorial Approach To Improve Piglet Health And Survival, Aryeri Stephanie Bardales Castellanos
A Multifactorial Approach To Improve Piglet Health And Survival, Aryeri Stephanie Bardales Castellanos
Electronic Theses and Dissertations
Pre-weaning mortality (PWM) remains a significant challenge in modern swine production systems, particularly in the context of hyper prolific sows. Although genetic selection has successfully increased litter sizes, these advancements have also intensified physiological stress on sows and increased the vulnerability of neonatal piglets. The majority of PWM occurs within the first 72 hours postpartum, with crushing by the sow as the leading cause of death. Additionally, iron deficiency anemia remains one of the most widespread nutritional disorders in piglets, further compromising survival, immune function, and growth. This thesis adopts a multifactorial approach to evaluate two management interventions aimed at …
Impact Of Automated Controlled Tile Drainage On Field Discharge Water, Soil Moisture, And Crop Yield In Southeastern South Dakota, Joshua Becker
Impact Of Automated Controlled Tile Drainage On Field Discharge Water, Soil Moisture, And Crop Yield In Southeastern South Dakota, Joshua Becker
Electronic Theses and Dissertations
Automated controlled tile drainage is an innovative approach to water management, using dynamic weir settings programmed to drain water out of the tile system if it encroaches into the root zone at pre-programmed depths and duration. While past studies have indicated potential yield and water quality benefits of controlled drainage, there has been very little research into the performance of automated controlled drainage. In addition to overall performance, there is a gap in knowledge of management settings to optimize yield and water quality benefits. Two experiments, one plot-scale and one modeling, were conducted to assess the impact of automated controlled …
The Effects Of Flaxseed Oil-Based Supplementation On Feeding Behavior, Performance, Follicular Dynamics, And Embryo Production In Beef Cattle, Kendal Lynn Green
The Effects Of Flaxseed Oil-Based Supplementation On Feeding Behavior, Performance, Follicular Dynamics, And Embryo Production In Beef Cattle, Kendal Lynn Green
Electronic Theses and Dissertations
This review seeks to provide an overview of fatty acid supplementation in cattle, opening with their structural and functional properties. Nutritional supplementation helps to regulate the precursors and substrates crucial to reproduction. This review aims to examine nutritional supplementation strategies, the role of fatty acids on follicular dynamics, and their impact on embryo production. The base of literature regarding lipid supplementation is vast, with varying results found across studies. Comparing results from prior studies remains difficult as there is a vast range of lipid sources used in beef and dairy animals. The emphasis of this review was placed on evaluating …
Mechanisms Leading To Cell Survival Through Membrane Repair In Pyroptosis, Prafulla Shrestha
Mechanisms Leading To Cell Survival Through Membrane Repair In Pyroptosis, Prafulla Shrestha
Electronic Theses and Dissertations
No abstract provided.
Dairy & Food Science News, December 2024, Department Of Dairy And Food Science News
Dairy & Food Science News, December 2024, Department Of Dairy And Food Science News
Dairy & Food Science News
Message from the Department Head
Faculty & Staff Updates
New Faculty Joining Our Department
Current Team of Faculty & Staff
Recruitment Updates & Opportunities
Extension Updates
Student Updates
Events & Calendar
Northern Great Plains Native Seed Strategy, Lora Perkins, Amy Symstad, Jennifer Zavaleta-Cheek, Emily Rohrer, Krista Ehlert
Northern Great Plains Native Seed Strategy, Lora Perkins, Amy Symstad, Jennifer Zavaleta-Cheek, Emily Rohrer, Krista Ehlert
Native Plant Initiative Newsletters and Reports
Developed by the Northern Great Plains Native Seed Partnership
Evaluating Consumers' Acceptability Of Laser-Labeled Apple Fruit, Durga Khadka, Martin J. Talavera, Eleni D. Pliakoni, Logan L. Britton, Londa Nwadike, Manreet S. Bhullar
Evaluating Consumers' Acceptability Of Laser-Labeled Apple Fruit, Durga Khadka, Martin J. Talavera, Eleni D. Pliakoni, Logan L. Britton, Londa Nwadike, Manreet S. Bhullar
Dairy Science and Food Science Faculty Publications: 2022 to Present
Fresh produce is traditionally labeled with plastic Price LookUp (PLU) stickers that are environmental contaminants and can easily detach during handling and disrupt traceability. The CO2 laser-labeling technology (LLT), an alternate method of produce labeling, has been gaining attention. However, the performance of this technology varies by produce, and consumer perception and acceptability remain understudied. The study evaluated consumers' perception and acceptability of the laser-labeled apple fruit that were purchased locally, laser-printed with a QR code, and coated with edible wax. A consumer study (N = 75) was conducted using 1) Apple with QR-code, 2) Apple with PLU plastic …
Evaluation Of Commercially Available Sanitizers Efficacy To Control Salmonella (Sessile And Biofilm Forms) On Harvesting Bins And Picking Bags, Colton Ivers, Samhitha Chalamalasetti, Blanca-Ruiz Llacsahuanga, Faith Critzer, Manreet Bhullar, Londa Nwadike, Umut Yucel, Valentina Trinetta
Evaluation Of Commercially Available Sanitizers Efficacy To Control Salmonella (Sessile And Biofilm Forms) On Harvesting Bins And Picking Bags, Colton Ivers, Samhitha Chalamalasetti, Blanca-Ruiz Llacsahuanga, Faith Critzer, Manreet Bhullar, Londa Nwadike, Umut Yucel, Valentina Trinetta
Dairy Science and Food Science Faculty Publications: 2022 to Present
This study evaluated the efficacy of five commercially available sanitizers to reduce Salmonella (sessile and biofilm forms) count on experimentally inoculated materials representative of harvesting bins and picking bags in the fresh produce industry. Sessile Salmonella cells were grown onto tryptic soy agar to create a bacterial lawn, while multistrain Salmonella biofilms were grown in a Centers for Disease Control and Prevention (CDC) reactor at 22 ± 2 °C for 96 h. Samples were exposed to 500 ppm free chlorine, 500 ppm peroxyacetic acid (PAA), 75 psi steam, and 5% silver dihydrogen citrate (SDC) for 30 sec, 1, or 2 …
From Block To Shred: Understanding The Factors Influencing Shreddability Of Mozzarella Cheese, Gunvantsinh Rathod, Suresh Saatariya, Ram Kumar, Praveen Upreti, Prafulla Salunke, J.K. Amamcharla
From Block To Shred: Understanding The Factors Influencing Shreddability Of Mozzarella Cheese, Gunvantsinh Rathod, Suresh Saatariya, Ram Kumar, Praveen Upreti, Prafulla Salunke, J.K. Amamcharla
Dairy Science and Food Science Faculty Publications: 2022 to Present
Mozzarella cheese (MC) is widely used for pizza ap- plications, and it is generally shredded either in conver- sion plants or in pizzerias. The shreddability of MC is influenced by a variety of factors and it is critical to understand how different Mozzarella cheese types and storage conditions (temperature and age) affect this prop- erty. Three batches each of 3 types of MC (low-moisture Mozzarella (LMM), low-moisture part-skim Mozzarella (LMPS), and reduced fat Mozzarella (RFM)) representing 3 different fat levels were procured directly from a com- mercial manufacturer and stored at 2 different tempera- tures (1.67 and 4.44°C) and evaluated …
Mutations And Antibiotic Resistance In Mycobacterium Tuberculosis, Ryan M. Johnson, Bodhi Brady, Nicklaus Busse, Connor Beckman, Hunter Gloden, Joseph Glasrud, Zachary Smith, Hari P. Nepal, Madhav P. Nepal
Mutations And Antibiotic Resistance In Mycobacterium Tuberculosis, Ryan M. Johnson, Bodhi Brady, Nicklaus Busse, Connor Beckman, Hunter Gloden, Joseph Glasrud, Zachary Smith, Hari P. Nepal, Madhav P. Nepal
Life Science Reports
Mycobacterium tuberculosis (MTB) is a bacterium known to target, infect, and destroy lung cells as well as connective tissues within the body. This bacterium is prevalent worldwide and has infected over a quarter of the current world population, becoming one of the most successful pathogens in history. Due to its extreme transmission rates as an airborne pathogen, MTB strains have been treated with antibiotics such as rifampicin and isoniazid, which inhibit bacterial infection in the human body. These first-round drugs remained as successful mechanisms for slowing and killing the pathogen, notably through rifampicin's inhibition of RNA-polymerase and isoniazid’s ability to …
Prescription Adherence Rates Across Medication Categories, Makenzie Stagner, Allie Weber, Madhav P. Nepal, Hari P. Nepal
Prescription Adherence Rates Across Medication Categories, Makenzie Stagner, Allie Weber, Madhav P. Nepal, Hari P. Nepal
Life Science Reports
Prescription adherence is a major public health challenge, as non-adherence to medication instructions can lead to poorer health outcomes and higher healthcare costs. Although prescription adherence is crucial for managing patient compliance and health outcomes, adherence rates differ greatly between medication types. The main objectives of this study were to determine prescription adherence rates across six medication types (antibiotic, cardiac, chronic health, pediatric, and psychiatric) and identify sources of variation. We searched PubMed and Web of Science databases for relevant published articles. Previous research data were selected related to prescription adherences and compliance rates were included in our analysis. Results …
Efficient Real-Time Droplet Tracking In Crop-Spraying Systems, Troung Nhut Huynh, Travis Burgers, Kim-Doang Nguyen
Efficient Real-Time Droplet Tracking In Crop-Spraying Systems, Troung Nhut Huynh, Travis Burgers, Kim-Doang Nguyen
Mechanical Engineering Faculty Publications
Spray systems in agriculture serve essential roles in the precision application of pesticides, fertilizers, and water, contributing to effective pest control, nutrient management, and irrigation. These systems enhance efficiency, reduce labor, and promote environmentally friendly practices by minimizing chemical waste and runoff. The efficacy of a spray is largely determined by the characteristics of its droplets, including their size and velocity. These parameters are not only pivotal in assessing spray retention, i.e., how much of the spray adheres to crops versus becoming environmental runoff, but also in understanding spray drift dynamics. This study introduces a real-time deep learning-based approach for …
In-Line Milk Progesterone Monitoring As A Tool For Precision Reproductive Management, Tony C. Bruinjé, Divakar J. Ambrose, Stephen J. Lebalnc
In-Line Milk Progesterone Monitoring As A Tool For Precision Reproductive Management, Tony C. Bruinjé, Divakar J. Ambrose, Stephen J. Lebalnc
Dairy Science and Food Science Faculty Publications: 2022 to Present
In-line milk progesterone (IMP4) monitoring (Herd Navigator, DeLaval) is a technology that automatically detects onset of cyclicity, estrus, and pregnancy. Sampling starts at 20 DIM and occurs on average every 2 d until pregnancy. Estrus is detected based on a decline in progesterone (P4) concentrations below a threshold, and pregnancy is assessed from 30 to 55 d after AI in cows without return to estrus. Here, we review the potential of IMP4 as a tool for reproductive management. In a series of observational studies with up to 158,961 IMP4 records from 4,353 AI events, we characterized predictors of pregnancy per …
Dairy Club Digest: Udderly Good Times, South Dakota State University Dairy Club
Dairy Club Digest: Udderly Good Times, South Dakota State University Dairy Club
Dairy Digest
This is the 2024 Dairy Club Digest. The Diary Club Digest is published annually by the South Dakota State University Dairy Club. The Digest contains information and news about the activities and members of the SDSU Dairy Club for the academic year 2023 - 2024.
Transglutaminase Crosslinked Milk Protein Concentrate And Micellar Casein Concentrate: Impact On The Functionality Of Imitation Mozzarella Cheese Manufactured On A Small Scale Using A Rapid Visco Analyzer, Prafulla Salunke, Lloyd Metzger
Transglutaminase Crosslinked Milk Protein Concentrate And Micellar Casein Concentrate: Impact On The Functionality Of Imitation Mozzarella Cheese Manufactured On A Small Scale Using A Rapid Visco Analyzer, Prafulla Salunke, Lloyd Metzger
Dairy Science and Food Science Faculty Publications: 2022 to Present
In dairy-based imitation mozzarella cheese (IMC) formulations, intact casein is critical and imparts IMC with a firm and elastic, stringy, melted texture. Rennet casein (RCN) is the desired ingredient to provide intact casein in IMC and is preferred over milk protein concentrate (MPC) and micellar casein concentrate (MCC). Transglutaminase (TGase), a crosslinking enzyme, alters the physical properties of MPC or MCC and may change IMC functionality. The objective of this study was to determine the effect of TGase-crosslinked MPC and MCC powders on the functionality of IMCs. The TGase treatment included TGase at 0.3 (L) and 3.0 (H) units/g of …
Growing South Dakota (Summer 2024), College Of Agriculture, Food And Environmental Sciences
Growing South Dakota (Summer 2024), College Of Agriculture, Food And Environmental Sciences
Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)
[Page] 2 Hayengas endow department head of animal science
[Page] 4 Reese named Klingbeil Endowed Educator
[Page] 5 SDSU Rodeo at Nationals
[Page] 6 Nwadike leading Department of Dairy and Food Science
[Page] 8 Hansen serving as 2024 Hobo Day Grand Pooba
[Page] 10 The scoop on the Davis Dairy Plant
[Page] 14 Research shows value in change
[Page] 16 Legacy of 'Yellow Ore, Yellow Hair, Yellow Pine'
[Page] 20 SDSU beef team grows
[Page] 22 SDSU Extension supporting local foods movement
[Page] 24 Bolstering rural child care needs
[Page] 26 Feeding kids great food
[Page] 27 Education Abroad takes …
Animal Science Research Report 2024 (Complete Report), Department Of Animal Science
Animal Science Research Report 2024 (Complete Report), Department Of Animal Science
Animal Science Research Report 2024
This is the complete proceedings of the South Dakota State University, Department of Animal Science Research Report 2024. The report contains research on ruminant, non-ruminant, and meat science.