Digital Commons Network^™

Captive Ring-Necked Pheasant Response To Very High Experimental Doses Of Lead, Travis J. Runia, Alex J. Solem

The Prairie Naturalist

Ingestion of spent lead pellets is a well-documented source of lead exposure in free-ranging birds, although the consequence of lead ingestion varies widely among avian guilds. Ring-necked pheasants (Phasianus colchicus) appear to be less susceptible to lead poisoning than other game birds. Our objectives were to determine survival, liver lead accumulation, and body mass change of 129 captive-raised pheasants in response to being gavage-fed 5, 10, 20, or 40 lead pellets. All pheasants survived the 21-day experiment. Liver-lead levels were positively correlated with the number of lead pellets retained and negatively correlated with beginning body mass. Change in percent body …

Nebraska Nonsense: Trojan Horse Or Cash Crop?, Jared West

Nebraska Law Review

When I was a young boy, my father reminisced about driving through the Nebraska countryside in the 1970s. He told me about the vast fields of green he saw, only, they were not fields of corn. Yes, Nebraska has a long history with hemp. In fact, local hemp even earned its own nickname: “Nebraska Non-sense.”1 Despite this unique history, it has been illegal to grow hemp in Nebraska for almost a century— until recently. In 2019, responding to the recent trend of hemp legalization in the U.S., Nebraska lawmakers weighed the question of whether Nebraskans should be allowed to grow …

Special Topic: Cell-Based Meat: The Need To Assess Holistically, Cameron Faustman, Deb Hamernik, Michael Looper, Steven A. Zinn

Department of Animal Science: Faculty Publications

Proof-of-principle for large-scale engineering of edible muscle tissue, in vitro, was established with the product’s introduction in 2013. Subsequent research and commentary on the potential for cell-based meat to be a viable food option and potential alternative to conventional meat have been significant. While some of this has focused on the biology and engineering required to optimize the manufacturing process, a majority of debate has focused on cultural, environmental, and regulatory considerations. Animal scientists and others with expertise in muscle and cell biology, physiology, and meat science have contributed to the knowledge base that has made cell-based meat possible and …

Formation And Characterization Of Lipid Droplets Of The Bovine Corpus Luteum, Heather A. Talbott, Michele R. Plewes, Crystal Krause, Xiaoying Hou, Pan Zhang, William B. Rizzo, Jennifer R. Wood, Andrea S. Cupp, John S. Davis

Department of Animal Science: Faculty Publications

Establishment and maintenance of pregnancy depends on progesterone synthesized by luteal tissue in the ovary. Our objective was to identify the characteristics of lipid droplets (LDs) in ovarian steroidogenic cells. We hypothesized that LDs are a major feature of steroidogenic luteal cells and store cholesteryl esters. Whole bovine tissues, isolated ovarian steroidogenic cells (granulosa, theca, small luteal, and large luteal), and isolated luteal LDs were assessed for LD content, LD-associated proteins and lipid analyses. Bovine luteal tissue contained abundant lipid droplets, LD-associated perilipins 2/3/5, hormone-sensitive lipase, and 1-acylglycerol-3-phosphate O-acyltransferase ABHD5. Luteal tissue was enriched in triglycerides (TGs) compared to other …

Asas-Nanp Symposium: Ruminant/ Nonruminant Feed Composition: Challenges And Opportunities Associated With Creating Large Feed Composition Tables, Andres Schlageter-Tello, George C. Fahey, Tarra Freel, Liz Koutsos, Phillip S. Miller, William P. Weiss

Department of Animal Science: Faculty Publications

Traditional feed composition tables have been a useful tool in the field of animal nutrition throughout the last 70 yr. The objective of this paper is to discuss the challenges and opportunities associated with creating large feed ingredient composition tables. This manuscript will focus on three topics discussed during the National Animal Nutrition Program (NANP) Symposium in ruminant and nonruminant nutrition carried out at the American Society of Animal Science Annual Meeting in Austin, TX, on July 11, 2019, namely: 1) Using large datasets in feed composition tables and the importance of standard deviation in nutrient composition as well as …

Influence Of Host Genetics In Shaping The Rumen Bacterial Community In Beef Cattle, Waseem Abbas, Jeremy T. Howard, Henry Paz, Kristin E. Hales, James E. Wells, Larry A. Kuehn, Galen E. Erickson, Matthew L. Spangler, Samodha Fernando

Department of Animal Science: Faculty Publications

In light of recent host-microbial association studies, a consensus is evolving that species composition of the gastrointestinal microbiota is a polygenic trait governed by interactions between host genetic factors and the environment. Here, we investigated the effect of host genetic factors in shaping the bacterial species composition in the rumen by performing a genome-wide association study. Using a common set of 61,974 single-nucleotide polymorphisms found in cattle genomes (n = 586) and corresponding rumen bacterial community composition, we identified operational taxonomic units (OTUs), Families and Phyla with high heritability. The top associations (1-Mb windows) were located on 7 chromosomes. These …

A Guide To The Common Mosquitoes Of Grand Junction Colorado., Carter Synhorst

Department of Entomology: Distance Master of Science Projects

Is a Mosquito Just a Mosquito? -- Mosquitoes are all over the Grand Valley, but most people think that a mosquito is just a mosquito. They don't stop to consider that there are many different species here in the Grand Valley. When and where you are getting attacked by them, can determine what type of mosquito it is. There are many different species of mosquitoes here that can vary from Fruita, to Grand Junction, and even into Palisade. There are over twenty-five different species here in our valley, and there are even more on the Grand Mesa and Glade …

2020 Extension Highlights

Lancaster County, Nebraska Extension: Reports

Extension answered the call to help communities during the COVID-19 pandemic. Extension not only pivoted how we taught, but changed programs to meet people’s needs. This 2020 highlights report shows examples of how we responded using research-based information.

Annual Report: Nebraska Extension In Lancaster County, January 1, 2020 Through December 31, 2020

Lancaster County, Nebraska Extension: Reports

Lancaster County Extension information from 2020. Contents include:

1) About Extension - Lancaster County Extension mission statement, overview and impact reports;

2) Staff and Programs - staff directory and Extension Educator annual program summaries;

3) Financials - summaries of 2019-2020 budget expenditures and current fiscal year 2020- 2021 budget; and

4) Media - website and social media information, samples of our Nebline monthly newsletter and local newspaper articles.

2nd-3rd Grade, Level 1-2: Spring Week 2, Tianna Bankhead, Molly Heeren, Brandon Heinz

ICMEE Learning Packets: Level 1-2 of English Proficiency (K-5)

This week’s packet we focus on Spring cooking and baking. Spring is a time where there are many holidays and celebrations such as Ramadan, Easter, Holi, and many more. We encourage you to work with your students if you can and try some home cooking. The included activities make room for students to cook with you, draw a picture about the cooking experience and write about the experience. Remember, this packet is meant as a tool for fun learning and not frustration. We hope this packet gives you the opportunity to bring your family together.

El paquete de esta semana …

Effect Of Ammoniation And Harvest Method On Waste And Consumption Of Corn Residue Bales Fed To Cows In A Round Bale Feeder, Ashley C. Conway, Zachary E. Carlson, Fred H. Hilscher Jr, J. C. Macdonald, Terry J. Klopfenstein, Mary E. Drewnoski

Department of Animal Science: Faculty Publications

To determine the effects of harvest method and ammoniation (3.7% of dry matter) on consumption and waste of baled corn residue, a 6 × 6 Latin square with a 3 × 2 factorial treatment structure was conducted. Six treatments consisted of either nonammoniated or ammoniated residue, harvested one of three ways: conventional rake and bale (CONV), New Holland Cornrower with two rows of stem chopped into the windrow with tailings (2ROW), or EZBale system (EZB) with a disengaged combine spreader and tailings dropped in a windrow. Open cows were grouped by body weight to produce a light block of two …

Deficits In Growth, Muscle Mass, And Body Composition Following Placental Insufficiency-Induced Intrauterine Growth Restriction Persisted In Lambs At 60 D Of Age But Were Improved By Daily Clenbuterol Supplementation, Rachel L. Gibbs, Rebecca M. Swanson, Joslyn K. Beard, Ty B. Schmidt, Jessica Lynn Petersen, Dustin T. Yates

Department of Animal Science: Faculty Publications

Low birthweight in livestock results from stress-induced intrauterine growth restriction (IUGR; Yates et al., 2018). IUGR fetuses exhibit diminished muscle growth that persists in the neonatal stage, leading to asymmetric body composition and decreased weight gain (Cadaret et al., 2019). Ultimately, low birthweight diminishes yield and carcass merit at harvest (Greenwood et al., 2000), making effective postnatal treatment strategies to improve IUGR growth outcomes necessary. In this study, we examined the benefits of injecting the β2 agonist clenbuterol daily to target adrenergic adaptations that we previously observed in IUGR muscle (Posont et al., 2018; Yates et al., 2018). We hypothesized …

Bovine Respiratory Disease Influences On Nutrition And Nutrient Metabolism, Clinton R. Krehbiel

Department of Animal Science: Faculty Publications

• Inflammation caused by bovine respiratory disease (BRD) continues to be one of the greatest challenges facing beef cattle producers and feedlot managers.

• BRD results in decreased intake, daily gain, and feed efficiency in feedlot calves, decreasing growth rate and increasing required days on feed.

• Morbidity caused by BRD has been associated with decreased hot carcass weight and poor carcass characteristics.

• Acute phase protein production in the liver, initiated by proinflammatory cytokines, may shift the priority for amino acid and energy use by the host animal during periods of sickness.

• Nutrient requirements for stressed calves seem …

Validity Of Plasma Collection Cards For Ferritin Assessment—A Proof-Of-Concept Study, Karsten Koehler, Eileen Marks-Nelson, Camila Pereira Braga, Safiya E. Beckford, Jiri Adamec

Department of Biochemistry: Faculty Publications

Objectives: Iron depletion is common around the world and among certain risk groups in developed countries. The overall purpose was to test the suitability of a novel plasma collection card for minimally invasive iron status assessment.

Methods: Twenty participants (10 f/10 m) participated in this cross-sectional study. Ferritin and hemoglobin were measured from blood collected from a forearm vein, serving as reference method. Blood was also collected from the fingertip using the NoviplexTM Plasma Prep Card as well as capillary collection tubes.

Results: There was substantial concordance between ferritin measured from samples collected via NoviplexTM and venous ferritin (concordance correlation …

Sestrin2 Phosphorylation By Ulk1 Induces Autophagic Degradation Of Mitochondria Damaged By Copper-Induced Oxidative Stress, Heejeong Kim, Byeong Tak Jeon, Isaac M. Kim, Sydney Townsend, Carolyn M. Lorch, Martonio Viana, Jacob F. Myers, Caroline J. Trupp, Zachary T. Whipps, Mondira Kundu, Soonkyu Chung, Xinghui Sun, Oleh Khalimonchuk, Jaekwon Lee, Seung-Hyun Ro

Department of Biochemistry: Faculty Publications

Selective autolysosomal degradation of damaged mitochondria, also called mitophagy, is an indispensable process for maintaining integrity and homeostasis of mitochondria. One well-established mechanism mediating selective removal of mitochondria under relatively mild mitochondria-depolarizing stress is PINK1-Parkin-mediated or ubiquitin-dependent mitophagy. However, additional mechanisms such as LC3-mediated or ubiquitin-independent mitophagy induction by heavy environmental stress exist and remain poorly understood. The present study unravels a novel role of stress-inducible protein Sestrin2 in degradation of mitochondria damaged by transition metal stress. By utilizing proteomic methods and studies in cell culture and rodent models, we identify autophagy kinase ULK1-mediated phosphorylation sites of Sestrin2 and demonstrate …

Corn Nitrogen Rate Recommendation Tools’ Performance Across Eight Us Midwest Corn Belt States, Curtis J. Ransom, Newell R. Kitchen, James J. Camberato, Paul R. Carter, Richard Ferguson, Fabián G. Fernández, David W. Franzen, Carrie A.M. Laboski, Emerson D. Nafziger, John E. Sawyer, Peter C. Scharf, John F. Shanahan

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Determining which corn (Zea mays L.) N fertilizer rate recommendation tools best predict crop N need would be valuable for maximizing profits and minimizing environmental consequences. Simultaneous comparisons of multiple tools across various environmental conditions have been limited. The objectives of this research were to evaluate the performance of publicly-available N fertilizer recommendation tools across diverse soil and weather conditions for: (i) prescribing N rates for planting and split-fertilizer applications, and (ii) economic and environmental effects. Corn N-response trials using standardized methods were conducted at 49 sites, spanning eight US Midwest states and three growing seasons. Nitrogen applications included eight …

Forage And Habitat For Pollinators In The Northern Great Plains—Implications For U.S. Department Of Agriculture Conservation Programs, Clint R.V. Otto, Autumn Smart, Robert S. Cornman, Michael Simanonok, Deborah D. Iwanowicz

Department of Entomology: Faculty Publications

Managed and wild pollinators are critical components of agricultural and natural systems. Despite the well-known value of insect pollinators to U.S. agriculture, Apis mellifera (Linnaeus, 1758; honey bees) and wild bees currently face numerous stressors that have resulted in declining health. These declines have engendered support for pollinatorconservation efforts across all levels of government, private businesses, and nongovernmental organizations. In 2014, the U.S. Department of Agriculture (USDA) and the U.S. Geological Survey initiated an interagency agreement to evaluate honey bee forage across multiple States in the northern Great Plains and upper Midwest. The long-term goal of this study was to …

Do The Quality And Quantity Of Honey Bee-Collected Pollen Vary Across An Agricultural Land-Use Gradient?, Michael P. Simanonok, Clint R. V. Otto, Matthew D. Smart

Department of Entomology: Faculty Publications

Pollen is the source of protein for most bee species, yet the quality and quantity of pollen is variable across landscapes and growing seasons. Understanding the role of landscapes in providing nutritious forage to bees is important for pollinator health, particularly in areas undergoing significant land-use change such as in the Northern Great Plains (NGP) region of the United States where grasslands are being converted to row crops. We investigated how the quality and quantity of pollen collected by honey bees (Apis mellifera L. [Hymenoptera: Apidae]) changed with land use and across the growing season by sampling bee-collected pollen …

Effect Of Pacifier Design On Nonnutritive Suck Maturation And Weight Gain In Preterm Infants: A Pilot Study, Alexander Ziegler, Jill L. Maron, Steven M. Barlow, Jonathan M. Davis

Department of Special Education and Communication Disorders: Faculty Publications

Background: Pacifiers are effective in promoting oral feeding by increasing the maturation of nonnutritive sucking to nutritive suck in preterm neonates. It is unclear whether pacifier design can influence suck dynamics and weight loss during the first week of life. Objectives: This pilot study examined the feasibility of studying the effect of pacifier design on suck maturation and weight loss in preterm neonates. Methods: Twenty-five preterm neonates (mean [SD] birth weight 1791 [344.9] grams, mean [SD] gestational age 33.1 [1.2] weeks) were studied in a single newborn intensive care unit. Neonates were assigned to either an orthodontic pacifier (n = …

Dental Health Factors Among Primary School Children In Southern Regions Of Ethiopia And Zambia, Gisselle Hernandez

NUTR/GLST 498b: Global Research Experiences in Nutrition and Health

Purpose: Assess oral health status, and factors affecting oral health, among primary schoolchildren in southern Ethiopia and Zambia. Methods: Visual dental assessments, anthropometric measurements, and questionnaires used to collect data among 6th and 7th grade students. Results: Although stunting rates were nearly equal, decay rates were not; 17.51% of Zambian students and 47.27% of Ethiopian students had one or more decayed teeth. Ethiopian students with dental fluorosis (74.55%) had higher rates of decay than those without the condition (p < .05). There were also significant differences between Ethiopians and Zambians regarding use of dental hygiene tools: Ethiopians were more likely to use dental sticks, while Zambians employed toothbrushes for cleaning. Conclusions: Dental health and hygiene education, focused on unique socioecological settings, could improve the oral health status of Ethiopian and Zambian children.

PowerPoint file attached below

Iron-Rich Foods, Anemia, And Malaria In Primary School Children In Southern Ethiopia And Zambia, Julianne Fay

NUTR/GLST 498b: Global Research Experiences in Nutrition and Health

PURPOSE: To examine the relationship between iron-deficient anemia and malaria in primary school children in Southern Ethiopia and Zambia and assess the correlation between diet and health status.

METHODS: Market inventories, observations at health outposts, and interviews and anthropometric assessments of 6th and 7th grade students.

RESULTS: Both Ethiopia and Zambia had 20 iron-rich foods available in local markets. Only liver consumption was associated with malaria experience; those who consumed liver were significantly less likely to have had the disease (p

DISCUSSION: Given the high prevalence of malaria in Southern Ethiopia and Zambia, and the correlation between liver consumption and …

Nutrition And Attendance For Primary School Students In Ethiopia And Zambia, Lillie Tronnes

NUTR/GLST 498b: Global Research Experiences in Nutrition and Health

Introduction: Nutrition impacts attendance for primary school students in Southern Ethiopia and Zambia. Food insecurity causes school-age children to be undernourished, malnourished, and stunted. These health concerns greatly impact ability to attend and perform in school.

Methods: Between May and June of 2019 6th and 7th grade students were surveyed within 4 schools in Ethiopia and 5 schools in Zambia. Anthropometric data, health history, and nutritional habits were surveyed.

Results: 8% of Ethiopian students were stunted while 10% of Zambian students were stunted. Ethiopian students indicated school lunch was an incentive while Zambian students did not. Most …

Obituary: Thomas Henry Kunz (1938–2020), Allen Kurta, Winifred F. Frick, M. Brock Fenton, Polly Campbell, Gary F. Mccracken, Robert M. Timm, Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

Dr. Thomas Henry Kunz, an internationally recognized expert on the ecology and behavior of bats and Professor at Boston University, passed away on April 13, 2020 in Dedham, Massachusetts, at the age of 81 as the result of complications from COVID-19. “Tom,” to his many friends and colleagues, was born on June 11, 1938 in Independence, Missouri, to William H. and Edna F. (Dornfeld) Kunz. He married Margaret Louise Brown on December 27, 1962 in Faucett, Missouri, Margaret’s hometown. Two children were born to Margaret and Tom—Pamela Kunz (Jeffrey Kwan) and David Kunz (Nicole, née D’Angelo), and five grandchildren.

As …

Nefdc Exchange, Volume 33, Special Edition 2020, New England Faculty Development Consortium

New England Faculty Development Consortium Exchange

Contents

Notes from the guest editor, Eric Matte (Landmark College)

Rescuing the canary in the coal mine: Addressing mental health on college campuses

Five )not ten) teaching practices inclusive of students with anxiety

Resilience through discomfort: Reframing anxiety and helpful strategies for the mathematics classroom

Learning and wellbeing: A collaborative approach to course design

Simulations offer transformational learning and anxiety reduction

NEFDC Board members

Environmental Factors On The Arctic Food Chain, Sydney Hansen

Department of Environmental Studies: Undergraduate Student Theses

As the Arctic is encountering many environmental changes, a multi-species meta-analysis was conducted from peer-reviewed scientific data gathered from the University of Nebraska-Lincoln (UNL) library’s bibliographic databases to determine 1) the main polar warming impacts on species of the Arctic food web such as polar bears, ringed seals, Arctic cod, copepods, and primary producers, 2) determine climatic impacts by looking at population sizes and migratory patterns over several years, and 3) discover impacts of a top-down cascade and look into conservation efforts. In the Arctic, species within its’ ecosystem are experiencing more dramatic impacts from climatic warming because of the …

Nutritional Value Of Crops Affected By Elevated Carbon Dioxide Concentrations In Atmospheric Conditions, Alex Joseph Cusimano

Department of Environmental Studies: Undergraduate Student Theses

This research was conducted to evaluate the effects of rising atmospheric carbon dioxide concentrations, and the nutritional quality of crops. Using Free Air CO2 Enrichment (FACE) and Decision Support System for Agrotechnology Transfer (DSSAT) to simulate elevated carbon dioxide levels, more review of previous literature was studied. Studies found that although there is a negative loss of nutrient availability, there are major signs that nutrient deficiencies. Nitrogen(protein), Iron, and Zinc are the most impacted with elevated atmospheric CO2 conditions. Further research and experiments regarding long term plant growth should be considered moving forward. With only limted situations and different CO2 …

A Review Of Technologies For Malt Flour And Sourdough From Brewery Spent Grain, Zachary Christman

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

The utilization of brewer's spent grain for the production of malt flour is the focus of this article. The reader is presented with superheated steam and extrusion as technologies to reduce mycotoxin contamination and improve shelf life. Another option is the fermentation of brewer's spent grain with a cereal grade lactic acid bacteria for the production of sourdough bread. Milling of the brewer's spent grain for the production of bread is also covered.

Maternal Depression And Breastfeeding In Home Visitation, Francesca A. Scheiber, Lisa S. Segre, Michael W. O'Hara, Darby Taylor, Rebecca L. Brock

Department of Psychology: Faculty Publications

Background: Home visitation is a popular mechanism for supporting parents and their young children. Breastfeeding is often promoted by home visitors due to its health benefits. However, maternal depression may interfere with breastfeeding. Thus, home visitors may be attempting to encourage health-promoting behaviors like breastfeeding, but maternal depression may interfere with engagement in those behaviors. Method: The data for this study were provided by the Des Moines Healthy Start and the Empowerment Family Support Project (DMHSP). We analyzed the relation between depression and breastfeeding for 364 women. Results: First, rates of elevated depression scores in this sample of women (8.7%–21.4% …

Climates For Ethnic And Racial Diversity: Latina/O Sorority And Fraternity Member Perspectives, Crystal Garcia

Department of Educational Administration: Faculty Publications

This qualitative critical narrative inquiry explored how members of Latina/o sororities and fraternities perceived campus climates for racial and ethnic diversity at predominantly White institutions. Using the multicontextual model for diverse learning environments, findings point to the significance of participants’ recognition of a misalignment between the espoused and enacted commitment to equity, inclusion, and diversity in relation to how they perceived the campus climate for racial/ethnic diversity. Implications for research and practice are discussed.

Belonging In A Predominantly White Institution: The Role Of Membership In Latina/O Sororities And Fraternities, Crystal Garcia

Department of Educational Administration: Faculty Publications

This qualitative, multiple case study explored the role of involvement in a particular university subculture, Latina/o sororities and fraternities, in how Latina/o college students develop and make meaning of their sense of belonging within predominantly White institutions. Findings address ways Latina/o college students described their institutional sense of belonging in addition to a discussion of five primary characteristics of belonging: where I have a role or responsibility, where people look like me, where I am valued and cared for, where my racial identity and culture is recognized and valued, and where I share interests or values …