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Articles 571 - 600 of 4221
Full-Text Articles in Life Sciences
The Presence Of Persistent Bovine Viral Diarrhea Virus Infection And A Novel Bosavirus In A Bison Herd, Ben M. Hause, Julia F. Ridpath, Angela E. Pillatzki, Tom Bragg, Christopher C.L. Chase
The Presence Of Persistent Bovine Viral Diarrhea Virus Infection And A Novel Bosavirus In A Bison Herd, Ben M. Hause, Julia F. Ridpath, Angela E. Pillatzki, Tom Bragg, Christopher C.L. Chase
SDSU Beef Day 2021 Summary Publication
Objective
Bovine viral diarrhea virus (BVDV) is a significant pathogen of cattle, leading to losses due to reproductive failure, respiratory disease and immune dysregulation. An investigation was conducted in an American bison (Bison bison) herd dealing with reproductive issues in 2018-2019 calving season to determine likely cause of the losses.
Prevalence Of Bovine Viral Diarrhea Virus Subspecies Among Persistently Infected Samples From Cattle In The United States, Jessie Vallejo, Travis Clement, Matthew Dammen, Christopher C.L. Chase
Prevalence Of Bovine Viral Diarrhea Virus Subspecies Among Persistently Infected Samples From Cattle In The United States, Jessie Vallejo, Travis Clement, Matthew Dammen, Christopher C.L. Chase
SDSU Beef Day 2021 Summary Publication
Objective:
The focus of this survey was to determine the prevalence of BVDV subspecies in the United States.
Comparison Of Winter Cow Feeding Strategies On Offspring Carcass Characteristics And Meat Quality, Erin Gubbels, Christopher Schauer, Don Stecher, Donny Drolc, Robin Salverson, Adele Harty, Warren Rusche, Cody Wright, Kristi Cammack, Zachary Smith, J. Kyle Grubbs, Keith Underwood, Janna Block, Kenneth Olson, Amanda Blair
Comparison Of Winter Cow Feeding Strategies On Offspring Carcass Characteristics And Meat Quality, Erin Gubbels, Christopher Schauer, Don Stecher, Donny Drolc, Robin Salverson, Adele Harty, Warren Rusche, Cody Wright, Kristi Cammack, Zachary Smith, J. Kyle Grubbs, Keith Underwood, Janna Block, Kenneth Olson, Amanda Blair
SDSU Beef Day 2021 Summary Publication
Objective
The objective of this research was to investigate effects of maternal prepartum dietary energy source (forage vs. concentrate) during mid and late gestation on carcass composition, and meat quality of offspring.
Study Description
Angus-based cows from 2 sources [n = 129 from SDSU (Experiment 1) and n = 70 from North Dakota State University (Experiment 2)] were stratified by body weight and age and placed into two treatment groups at a drylot facility during mid- and late-gestation: Concentrate (dams fed a concentrate-based diet) or Forage (dams fed a forage-based diet). Calves were finished and carcass data was collected. Striploins …
Beef Carcass Weight And Quality Grade Influence Tenderness, Samantha R. Egolf, Austin C. Egolf, Lydia M. Hite, Christina Elaine Bakker, Amanda D. Blair, Keith Underwood, Judson Grubbs
Beef Carcass Weight And Quality Grade Influence Tenderness, Samantha R. Egolf, Austin C. Egolf, Lydia M. Hite, Christina Elaine Bakker, Amanda D. Blair, Keith Underwood, Judson Grubbs
SDSU Beef Day 2021 Summary Publication
Objective
The objective was to investigate whether hot carcass weight (HCW) affected Warner-Bratzler shear force (WBSF) and tenderness formation of Denver, strip, and eye of round steaks from USDA Select (Se) and low Choice (LC) beef carcasses.
Study Description
Select and LC carcasses were selected at a commercial beef plant by HCW (light = 650–750 lb; middle = 850–950 lb; heavy = 1,025–1,150 lb). Steaks were fabricated and aged for 5, 10, and 14 days. Tenderness was determined through WBSF based on industry standards. Additionally, protein degradation was analyzed to determine tenderness formation.
Temperature During Beef Product Transport Impacts Subprimal And Steak Yield, Christina E. Bakker, Amanda D. Blair, Keith R. Underwood, Heather R. Rode, Judson K. Grubbs
Temperature During Beef Product Transport Impacts Subprimal And Steak Yield, Christina E. Bakker, Amanda D. Blair, Keith R. Underwood, Heather R. Rode, Judson K. Grubbs
SDSU Beef Day 2021 Summary Publication
Objective
The objective of this study was to determine the impact of ambient temperature during striploin and sirloin transport on moisture loss, color, and tenderness.
Influence Of Beef Carcass Chilling Rate On Steak Case Life And Quality Traits, Trevor C. Dehaan, Amanda D. Blair, Judson K. Grubbs, Keith R. Underwood
Influence Of Beef Carcass Chilling Rate On Steak Case Life And Quality Traits, Trevor C. Dehaan, Amanda D. Blair, Judson K. Grubbs, Keith R. Underwood
SDSU Beef Day 2021 Summary Publication
Objective
To determine if beef carcass weight influences chilling rate, pH decline, beef color, case life and tenderness of steaks from the round, loin, rib and chuck.
Influence Of Carcass Chilling System On Chuck, Loin, And Round Temperature Decline, Carcass Characteristics, And Tenderness, Lydia M. Hite, Christina E. Bakker, Trevor C. Dehaan, Amanda D. Blair, Keith R. Underwood, Judson K. Grubbs
Influence Of Carcass Chilling System On Chuck, Loin, And Round Temperature Decline, Carcass Characteristics, And Tenderness, Lydia M. Hite, Christina E. Bakker, Trevor C. Dehaan, Amanda D. Blair, Keith R. Underwood, Judson K. Grubbs
SDSU Beef Day 2021 Summary Publication
Objective
Determine the effect of chilling systems on beef carcass temperature decline, carcass characteristics, and tenderness.
Metal-Organic Framework-Based Sensor For Bacterial Trehalose In Beef Products, Matthew Hummel, Hongxing Jia, Ailin Guo, Abdullah Maruf, Shun Lu, Wei He, Yue Zhou, Zhengrong Gu
Metal-Organic Framework-Based Sensor For Bacterial Trehalose In Beef Products, Matthew Hummel, Hongxing Jia, Ailin Guo, Abdullah Maruf, Shun Lu, Wei He, Yue Zhou, Zhengrong Gu
SDSU Beef Day 2021 Summary Publication
Objective
The objective is to detect trehalose from pathogenic bacteria using an electrochemical sensor based on alkali earth metal-organic frameworks (AE-MOFS).
Fungicide, Insecticide, And Foliar Fertilizer Effect On Soybean Yield, Seed Composition, And Canopy Retention, Kelsey Bergman, Ignacio Clampitti, Peter Sexton, Péter Kovács
Fungicide, Insecticide, And Foliar Fertilizer Effect On Soybean Yield, Seed Composition, And Canopy Retention, Kelsey Bergman, Ignacio Clampitti, Peter Sexton, Péter Kovács
Agronomy, Horticulture and Plant Science Faculty Publications
Soybean [Glycine max (L.) Merr.] yield has increased over time through the introduction of new varieties and improved agronomic practices. However, seed protein concentration has decreased. We conducted field studies in 2018 and 2019 to investigate the effects of fungicide, insecticide, and foliar fertilizer application on grain yield and seed quality in two soybean maturity groups (MG). In‐season treatments targeted nutrient availability and soybean canopy duration during the seed‐filling period by fungicide, insecticide, or foliar fertilizer application at the onset of this period. Biomass samples were collected at R5, R6, and R7 and partitioned into plant parts. Year, location, …
Agronomic Response Of Camelina To Nitrogen And Seeding Rate On The Northern Great Plains, Thandiwe Nleya, Dwarika Bhattarai, Phillip Alberti
Agronomic Response Of Camelina To Nitrogen And Seeding Rate On The Northern Great Plains, Thandiwe Nleya, Dwarika Bhattarai, Phillip Alberti
Agronomy, Horticulture and Plant Science Faculty Publications
Camelina (Camelina sativa L. Crantz,) a new oilseed crop in the Brassicaceae family has favorable agronomic traits and multiple food and industrial uses. Appropriate production practices for optimal camelina yield in temperate climates of North America are lacking. This study investigated the response of camelina seed yield and quality, and agronomic traits to applied N (5 levels, 0, 28, 56, 84, 140 kg ha−1) and four seeding rates (4.5, 9, 13, 17.5 kg ha−1). Separate experiments were conducted at four environments (site-years) for N and three environments for seeding rate in South Dakota. In three of the four environments, the …
Spur And Short Cane Pruning Influence Bud Viability, Yield, And Fruit Quality, Turhan Yilmaz, Anne Fennell
Spur And Short Cane Pruning Influence Bud Viability, Yield, And Fruit Quality, Turhan Yilmaz, Anne Fennell
Agronomy, Horticulture and Plant Science Faculty Publications
Balanced pruning is used to manage vegetative vigor and fruit load to optimize yield and fruit quality in most of fruit species. The objective of this study was to determine the bud viability, yield, and fruit quality potential of four grapevine cultivars using three pruning strategies. Four cold climate grapevine cultivars- -Brianna, Frontenac, La Crescent, and Marquette--were tested with spur (SP), short cane (SC), and spur plus short cane (SPSC) pruning treatments in 2018, 2019, and 2020. The SP treatment was 10 two-bud spurs per vine, SC was five four-bud short canes, and SPSC vines had four SP and three …
Natural Resource Management Newsletter, Fall 2020/Winter 2021, Department Of Natural Resource Management
Natural Resource Management Newsletter, Fall 2020/Winter 2021, Department Of Natural Resource Management
NRM Newsletter
[Page] 2 One Day for State
[Page] 2 SDSU Extension NPI Range Roundup
[Page] 3 Con McCrea and NRLE News
[Page] 3 Pete Bauman Updates Western SD Undisturbed Land Data
[Page] 4 First Annual NPI Photo Contest
[Page] 4 Conservation Planning & Park Management Undergraduate Student Eagle Scout Project
[Page] 5 Joe Jenks' Zoom Retirement Celebration
[Page] 6 NRM Affiliate Assistant Professor, Maaz Gardezi - NSF Precision Ag Project: NSF project to build farmers’ confidence in precision ag technologies
[Page] 6 NRM Affiliate, Stella Liu - Faculty Feature video
[Page] 7 SDSU Extension to assess farm-ranch stress statewide
[Page] 8 …
Jackrabbit Dairy & Food Review, Winter 2020-2021, Dairy And Food Science Department
Jackrabbit Dairy & Food Review, Winter 2020-2021, Dairy And Food Science Department
The Jackrabbit Dairy & Food Review
This is the Winter 2020- 2021 Jackrabbit Dairy and Food Review.
It contains the following articles and information:
Message from the Department Head
New Personnel
Judging Activities
Dairy Club
Food Science Club
Student Accomplishments
Professional Activities of Faculty and Staff
Dairy Facilities
2020 Graduates
Where Are They Now?
Scholarships
Dairy and Food Science Students
Outreach
Research Highlights
Dairy Digest 2021 : Striving To Support And Sustain, South Dakota State University Dairy Club
Dairy Digest 2021 : Striving To Support And Sustain, South Dakota State University Dairy Club
Dairy Digest
This is the 2021 Dairy Digest 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 2020 - 2021.
A Narrative Review Of Grocery Store Interventions On Improving Healthy Food Purchases, Kylie Serie
A Narrative Review Of Grocery Store Interventions On Improving Healthy Food Purchases, Kylie Serie
Health and Nutritional Sciences Graduate Students Plan B Capstone Projects
Objective: The objective of the literature review was to understand and review current research in the area of grocery store interventions to improve purchasing of healthy foods.
Methods: PubMed and web-based searches were done for original research literature that looked at supermarket and grocery store interventions promoting healthy food choices. The literature could include qualitative and quantitative data. Keywords that were used include: “grocery store,” “interventions,” “healthy eating,” “supermarket,” “healthy foods,” “store intervention,” “food retail intervention,” “convenience store.”
Results: The review showed that there are studies on supermarket interventions. Interventions that showed positive outcomes were those that had direct …
Impact Of Mature, Female Eastern Red Cedar (Juniperus Virginiana L.) Trees On Soil Seed Bank In The Mixed-Grass Prairie Of The Northern Great Plains, Austin Domeier, Lan Xu, Alexander Smart
Impact Of Mature, Female Eastern Red Cedar (Juniperus Virginiana L.) Trees On Soil Seed Bank In The Mixed-Grass Prairie Of The Northern Great Plains, Austin Domeier, Lan Xu, Alexander Smart
Native Plant Focused Publications
Eastern red cedar (ERC) (Juniperus virginiana L.) trees are invading prairies throughout the Great Plains due to fire suppression and overgrazing. This encroachment poses a threat to native plant communities in terms of their reproduction, regeneration, diversity, and invasiveness. It is unknown how ERC trees impact belowground propagules in the mixed-grass prairie and how it may alter heterogeneity. The objective of this study was to evaluate how mature female ERC trees impact the soil seed bank composition. In October 2020 in southcentral South Dakota ten female ERC trees with canopy diameters = 5-10 m, similar environmental characteristics, and isolated from …
South Dakota Farmers’ Views On Environment & Community, Tong Wang, Jim Ristau
South Dakota Farmers’ Views On Environment & Community, Tong Wang, Jim Ristau
South Dakota Farm Survey
Researchers at South Dakota State University (SDSU) conducted producer surveys in the eastern part of South Dakota in both 2018 and 2021. Producers could take the survey online or via mail and were asked questions about their farm, farming practices including usage of soil and water conservation practices, and their values.
Southeast South Dakota Experiment Farm Annual Progress Report, 2021, Southeast South Dakota Research Farm
Southeast South Dakota Experiment Farm Annual Progress Report, 2021, 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.
Management And Dietary Strategies To Mitigate Environmental Stressors In Northern Plains Cattle Feeding Systems, Warren Carl Rusche
Management And Dietary Strategies To Mitigate Environmental Stressors In Northern Plains Cattle Feeding Systems, Warren Carl Rusche
Electronic Theses and Dissertations
Three studies were undertaken to examine strategies to mitigate environmental stress faced by Northern Plains cattle feeders. In the first study, 46 feedlot managers from SD (n = 21), MN (n = 6), and NE (n = 19) were surveyed on use and perceptions of heat stress (HS) mitigation strategies. All respondents avoided cattle handling during heat stress events and incorporated some method of HS mitigation. Buildings or shades were perceived as the most successful strategy (60.9%) and were most commonly named as strategies managers would like to employ (63% for shades and 17.4% for buildings). Increasing dietary corn silage …
Identification Of Loci Influencing Teosinte Crossing Barrier 1 (Tcb1) Efficacy In Maize By Quantitative Trait Loci (Qtl) Mapping And Genome-Wide Association Study (Gwas), Namrata Maharjan
Electronic Theses and Dissertations
Pollen cross-contamination has been a major problem for maize breeders. Various mechanical methods applied to avoid the contaminations are ineffective. The genetic factors related to maize fertilization can be used to develop an effective method to prevent pollen contamination. Pollen rejection ability controlled by Teosinte crossing barrier 1 (Tcb1) is such a genetic system. Silks possessing dominant Tcb1-s reject pollen possessing the recessive allele (tcb1). Successful fertilization occurs when Tcb1-s pollen falls upon tcb1 silks. The efficacy of dominant Tcb1-s was, however, reduced when repeatedly backcross with maize inbred lines, which suggests that there are modifiers to Tcb1-s. To find …
Pollinator Ecology In Agroecosystems Of Eastern South Dakota, Isabela Beatriz Vilella-Arnizaut
Pollinator Ecology In Agroecosystems Of Eastern South Dakota, Isabela Beatriz Vilella-Arnizaut
Electronic Theses and Dissertations
Community structure contributes to ecosystem persistence and stability. To understand the mechanisms underlying pollination and community stability of natural areas in a human influenced landscape, a better understanding of the interaction patterns between plants and pollinators in disturbed landscapes is needed. Furthermore, understanding the potential conservation value in green spaces such as botanical gardens could assist in preserving and bolstering plant-pollinator interactions. Our study takes place in the Northern Great Plains which still retains extensive tracts of remnant temperate grassland habitat within a matrix of varying land-uses. First, we used a network-based approach to quantify how temperate grassland attributes and …
Therapeutic Immunoglobulin G Surface Mobility Promotes Antibody-Dependent Cellular Phagocytosis By Arp2/3 And Syk Mediated Rearrangement Of Fcγ Receptors, Seongwan Jo
Electronic Theses and Dissertations
Therapeutic antibodies are rapidly growing class of drugs for treating cancers and immunological disorders by targeting specific antigens or blocking certain pathway to inhibit the tumor growth. In cancer immunotherapy, it was found that Fcγ receptor (FcγR) in immune cells play an important role in antibody dependent cell toxicity against tumor cells. Therefore, understanding FcγR activation mechanism, which requires ligation with immunoglobulin (IgG), is crucial to enhance potency of therapeutic antibodies. One crucial immune responses triggered upon FcγR ligation with IgG is phagocytosis which indicates clearing targets by engulfment. It is known that FcγRs form microclusters which gets rearranged during …
Assessing Dairy Farm Employees Health, Leyby Stephany Guifarro Rodriguez
Assessing Dairy Farm Employees Health, Leyby Stephany Guifarro Rodriguez
Electronic Theses and Dissertations
This Master thesis evaluates the impact of general health care and eating habits (Study 1), vision care (Study 2), and mental health status (Study 3) on Latino dairy farmworkers lifestyle and work performance in South Dakota. We hypothesized that the health status of dairy workers has a negative impact on the workers’ job performance. In study 1, data from a total of 70 participants were collected, using a face-to-face survey in Spanish, which allowed us to assess various topics and details related to employees’ daily routine tasks, eating habits, and general health status. Furthermore, recommendations to improve general health care …
Evaluation Of Biotype 4 Aphis Glycines (Hemiptera: Aphididae) Induced Susceptibility On Soybean And Soja, Jakob David Hicks
Evaluation Of Biotype 4 Aphis Glycines (Hemiptera: Aphididae) Induced Susceptibility On Soybean And Soja, Jakob David Hicks
Electronic Theses and Dissertations
Soybean aphids have been a significant pest of soybeans in North America since 2000. Before 2000, soybeans did not face significant insect pest pressure from any arthropods with piercing-sucking mouthparts. It is estimated that economic damage from soybean aphids range from $1billion to $4.7 billion annually. Research efforts focused on the identification of host plant resistance genes in soybean and discovered many resistant to Aphis glycines genes (i.e., Rag genes) in soybean. However, the adoption of commercially released Rag soybean cultivars has been limited. The prospect of management with Rag genes was further complicated by the identification of three virulent …
Milk Phospholipids Extraction Using Switchable Solvents, Kaavya Rathnakumar
Milk Phospholipids Extraction Using Switchable Solvents, Kaavya Rathnakumar
Electronic Theses and Dissertations
Phospholipids (PLs) found in milk are of great interest due to their health and nutritional benefits associated with their consumption. By-products generated during the manufacture of dairy products represent a source of PLs with potential for value-added opportunities. Currently, the extraction of PLs from by-products results in overall lowefficiencies, and it involves subsequent solvent separation and lipid recovery. This dissertation studied the extraction of milk PLs from by-product streams with a tertiary anime (N, N-dimethyl cyclohexylamine, CyNMe2) as a switchable hydrophilicity solvent. This type of solvents can be reversibly switched between a hydrophobic and hydrophilic form in the presence or …
A Biocontrol Pesticide Derived From Mycovirus-Infected Sclerotinia Sclerotiorum Can Induce Plant Resistance, Connor Pedersen
A Biocontrol Pesticide Derived From Mycovirus-Infected Sclerotinia Sclerotiorum Can Induce Plant Resistance, Connor Pedersen
Electronic Theses and Dissertations
Soybean leaf-associated gemycircularvirus-1 (SlaGemV-1) is a novel mycovirus discovered through the metagenomic sequencing of soybean leaves which is capable of inducing hypovirulence in the highly pathogenic fungus Sclerotinia sclerotiorum. RNASeq analysis techniques were used to determine the transcriptional changes caused by the infection of virus in S. sclerotiorum, as well as the transcriptional changes in Glycine max caused by the colonization of hypovirulent, SlaGemV-1-infected S. sclerotiorum. RNASeq results indicate that viral infection leading to hypovirulence may attenuate expression of genes relating to cell wall synthesis, microtubule formation, and metabolism of steroids and natural antibiotics. Cytochrome P450-related genes, kinesin domain genes, …
The Effects Of Saline Soil On Microbiome And The Isolation Of Root-Associated Microbes To Relieve Salinity Stress, Duncan Jakubowski
The Effects Of Saline Soil On Microbiome And The Isolation Of Root-Associated Microbes To Relieve Salinity Stress, Duncan Jakubowski
Electronic Theses and Dissertations
Increasing levels of salinity in once-viable lands for crop production is a serious and growing problem in the Northern Great Plains. The objectives of this study were to determine the effects of saline soil on the microbial composition of plant roots and bulk soil, to measure metabolic changes in plant roots from saline soil, to determine the viability of root-associated microbes as inoculants to increase stress tolerance in plants, as well as determine the impact of saline soil on nitrogen cycling genes linked to greenhouse gas production. This study hypothesizes that high soil salinity levels have a significant impact on …
Implications Of Broadleaf, Grass, And A Blend Of Broadleaf And Grass Cover Crops On Soil Health And Corn Production In South Dakota, Hunter Bielenberg
Implications Of Broadleaf, Grass, And A Blend Of Broadleaf And Grass Cover Crops On Soil Health And Corn Production In South Dakota, Hunter Bielenberg
Electronic Theses and Dissertations
Cover crops have recently gained attention in the U.S. Midwest because of their potential to increase soil organic matter and protect overall soil health. This study was conducted to determine the effects of different cover crop mixtures on soil health measurements and corn grain yield at increasing nitrogen (N) rates. Cover crops were planted in the fall after small grains harvest as a dominantly grass mixture, dominantly broadleaf mixture, or a 50/50 grass and broadleaf mixture with a no cover crop control. Soil and cover crop biomass samples were collected in the fall before winter cold termination and in the …
Soil Organic Carbon, Hydro-Physical Properties, Pore Structure And Greenhouse Gas Fluxes Under Integrated Crop-Livestock System, Jashanjeet Kaur Dhaliwal
Soil Organic Carbon, Hydro-Physical Properties, Pore Structure And Greenhouse Gas Fluxes Under Integrated Crop-Livestock System, Jashanjeet Kaur Dhaliwal
Electronic Theses and Dissertations
Integrated crop-livestock system (ICLS) can improve soil organic carbon (SOC), enhance soil hydro-physical properties, and mitigate greenhouse gas (GHG) emissions. The objectives of this study were to: (i) investigate the influence of grazing, cover crop (CC), and a combination of grazing and CC on labile soil carbon (C) and nitrogen (N) fractions and soil enzyme activity, (ii) assess the impacts of short-term (3-4 years) and long-term (>30 years) ICLS on SOC, bulk density, structural quality and water infiltration, (iii) evaluate soil pore structural properties such as porosity, number of pores, pore size, pore shape, fractal dimension, anisotropy and tortuosity …
Impact Of Carcass Chilling System On Carcass Characteristics And Biochemical Changes In Beef Carcasses, Lydia Margaret Hite
Impact Of Carcass Chilling System On Carcass Characteristics And Biochemical Changes In Beef Carcasses, Lydia Margaret Hite
Electronic Theses and Dissertations
Effective and efficient chilling of beef carcasses will directly influence meat quality and consumer acceptance. Over the past century the United States’ meat industry has evolved, and spray chilling system have become common practice utilized by the beef industry. However, many of the chilling systems presently in use were designed to chill carcasses averaging lighter than the average beef hot carcass weight of today. Beef hot carcass weight has increased 68 kilograms from 1991 to 2019. The increase in beef hot carcass weight could result in longer chilling periods and present possible challenges for chilling systems used by the beef …