Digital Commons Network^™

Regenerating Agroecosystems By Overcoming Human Exceptionalism In Designing For Increased Equity Of Benefits From Ecoservices, Ali Loker, Charles A. Francis

Department of Agronomy and Horticulture: Faculty Publications

Our commentary explores three critical issues related to ecosystem services. First is how ecoservices are currently designed and implemented primarily for human benefit without concern for how these impact other species. We conclude that awareness of this imbalance is the first step toward meaningful change. Second we observe that human exceptionalism guides most decisions, and ask whether we can overcome this mind-set to embrace ecoregeneration and design of resilient and mutually beneficial agroecosystems. Our attitude toward the challenge and moving toward greater humility about human roles that guide management decisions in the ecosystem is a requisite for change. Third we …

2022 Extension Highlights

Lancaster County, Nebraska Extension: Reports

The work and programs highlighted in this report are a small sample of how local residents, and beyond, count on Lancaster County Extension to be relevant, inclusive, innovative and responsive.

Maize Response To Coupled Irrigation And Nitrogen Fertilization Under Center Pivot, Subsurface Drip And Surface (Furrow) Irrigation: Soil-Water Dynamics And Crop Evapotranspiration, Ali T. Mohammed, Suat Irmak

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Determination of crop evapotranspiration (ETc) and root zone soil-water dynamics/distribution coupled with nitrogen (N) management strategies is important for effective management of agricultural fields for enhancing production efficiency. However, limited data and knowledge exist that sufficiently inform how soil-water dynamics and ETc response may vary with coupled irrigation levels and different N application timings under different irrigation methods. Extensive field experiments were conducted in 2016 and 2017 under center pivot (CP), subsurface drip irrigation (SDI), and furrow irrigation (FI) at full irrigation treatment (FIT), 80% FIT, 60% FIT, and rainfed treatment (RFT) with N application timing treatments of traditional N …

Interaction Of Urea With Frequency And Amount Of Distillers Grains Supplementation For Growing Steers On A High Forage Diet, Haley F. Linder, Josh E. Sebade, Zac E. Carlson, Hannah C. Wilson, Tyler J. Spore, Mary E. Drewnoski, Jim C. Macdonald

Department of Animal Science: Faculty Publications

Two studies were conducted to determine interactions of urea inclusion to a dried distillers grains plus solubles (DDGS; 29.4% crude protein, 5.48% ether extract) supplement fed at two amounts and two frequencies to steers on a high forage diet. In Exp. 1, 120 (247 kg; SD = 20) steers were fed individually for 84 d. Steers received ad libitum grass hay (6.8% crude protein) and one of eight treatments. Treatment design was a 2 × 2 × 2 factorial. Supplement was fed daily or three times per week, amount of supplement fed was 6.36 kg dry matter (DM)/week [0.37% body …

Production Cow-Calf Responses From Perennial Forage-Based And Integrated Beef-Cropping Systems, Zac E. Carlson, Levi Mcphillips, Galen E. Erickson, Mary E. Drewnoski, Jim C. Macdonald

Department of Animal Science: Faculty Publications

An experiment was conducted to measure production responses of an alternative cow-calf production system integrated into a cropping system without access to perennial forage compared to a traditional cow-calf system utilizing perennial forage. Multiparous, cross-bred beef cows (n = 160; average age = 6.2 ± 2.8 yr) were utilized in a randomized complete block experimental design and unstructured treatment design. Upon initiation, cows were blocked by age and stratified by source, assigned randomly to one of two production systems, each with four replicates (n = 20 cows/replicate). Once allotted to their treatment groups, cows remained in their experimental units for …

Site Of Infusion Of A Commercially Available Direct-Fed Microbial On Performance And Digestibility In Lactating Holstein Cows, K. S. Thompson, A. G. Mckeith, C. R. Krehbiel

Department of Animal Science: Faculty Publications

Objective: The objective of this research was to evaluate site of infusion of a commercially available direct-fed microbial (DFM) containing 10⁹ cfu/g of Lactobacillus acidophilus and 10⁹ cfu/g Propionibacterium freudenreichii on DMI, rumen kinetics, ruminal VFA, digestibility, milk production, milk components, and blood metabolites in lactating dairy cows.

Materials and Methods: Four Holstein cows equipped with ruminal cannulas were used in a Latin square design experiment with 4 periods. Each 37-d period consisted of 14 d of no treatment to prevent crossover contamination, 14 d of adaptation to treatments, 8 d of sampling, and 1 d for …

Functional Foods: Promising Therapeutics For Nigerian Children With Sickle Cell Diseases, Oladeji John Alabi, Fikayo Noah Adegboyega, Dolapo Samuel Olawoyin, Oluwakemi Arinola Babatunde

Department of Biochemistry: Faculty Publications

Sickle cell disease (SCD), also known as sickle cell anemia (SCA) is one of the structural hemoglobinopathies that occurs due to a single nucleotide mutation from GAG to GTG, which changes the amino acid of a β-globin chain of hemoglobin (Hb) from glutamate to valine. This singular mutation results to disorderliness in red blood cells (RBCs) with advent of changes in RBC morphology and other pathological conditions. In the 1980s, intermittent red blood cell transfusions, opioids, and penicillin prophylaxis were the only available therapy for SCA and were commonly reserved for acute, life threatening complications. So far, the US Food …

Fish Oil Intake During Gestation And Lactation Attenuated Stz-Induced Diabetes Inmale Offspring Via Activation Of Brown Fat And Modulating Oxylipin Profile, Rong Fan, Shalom Thomas, Mikyoung You, Zhuoheng Li, Brandt Bessell, Bhanwar Lal Puniya, Tomáš Helikar, Zhenhua Liu, Soonkyu Chung

Department of Biochemistry: Faculty Publications

Fish oil (FO) has been demonstrated to activate brown thermogenesis and attenuate inflammation in the brown adipose tissue (BAT). Previously, we have reported thatmaternal FO supplementation promotes BAT activity of the weaned mice pups. However, whether maternal FO intake could confer sustainable metabolic benefits to offspring remains uncovered. Therefore, this study aimed to determine the differential impact of maternal FO during pregnancy versus lactation on BAT transcriptome and evaluate the role of bioactive lipid metabolites derived from maternal FO supplementation on the extended metabolic benefits of older pups in the context of type 1 diabetes (T1D).

Conclusions: Our results suggested …

Corn Nitrogen Nutrition Index Prediction Improved By Integrating Genetic, Environmental, And Management Factors With Active Canopy Sensing Using Machine Learning, Dan Li, Yuxin Miao, Curtis J. Ransom, Gregory Mac Bean, Newell R. Kitchen, Fabián G. Fernández, John E. Sawyer, James J. Camberato, Paul R. Carter, Richard B. Ferguson, David W. Franzen, Carrie A.M. Laboski, Emerson D. Nafziger, John F. Shanahan

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

Accurate nitrogen (N) diagnosis early in the growing season across diverse soil, weather, and management conditions is challenging. Strategies using multi-source data are hypothesized to perform significantly better than approaches using crop sensing information alone. The objective of this study was to evaluate, across diverse environments, the potential for integrating genetic (e.g., comparative relative maturity and growing degree units to key developmental growth stages), environmental (e.g., soil and weather), and management (e.g., seeding rate, irrigation, previous crop, and preplant N rate) information with active canopy sensor data for improved corn N nutrition index (NNI) prediction using machine learning methods. Thirteen …

Lincoln Vital Signs, 2022 Report (Version 1.2), Stacey Hoffman, Alyssa Sloane, Taylor Smith

University of Nebraska Public Policy Center: Publications

Executive Summary

Since 2014, Lincoln Vital Signs, authored by the University of Nebraska Public Policy Center, has been a community-wide data resource. The 2022 Lincoln Vital Signs report is sponsored by Lincoln’s and Nebraska’s largest public and private charitable organizations. Lincoln Vital Signs 2022 continues the tradition of providing credible, reliable information about Lincoln, compared to its recent past and to other communities in the United States. Data from the report are used by organizations and individuals to inform decisions, spark connections, and spur collaboration. You can view the report, along with new interactive graphs, at https://www.lincolnvitalsigns.org. Lincoln Vital …

Nebraska's Stress Relief: Solutions For Land, Soil, Water, People, And Animals, Laura E. Young, Rebel Sjeklocha, Rchael Williss, Mickayla Yard, Cade Adamson, Whitney Steckel, Dani Laible, Bella Chaffin, Sophia Svanda, Grace Mcdonald, Malina Lindstrom

Strategic Discussions for Nebraska

Nebraska's Stress Relief: Solutions for Land, Soil, Water, People, and Animals

Advancing production agriculture in a way that also takes care of our water and our land cannot happen without bringing together leading experts to share their expertise about stress biology. It is an honor to channel these efforts to serve the people and industries of Nebraska.

America’S First World Obesity, Dismas Nsabiyumva

Nebraska College Preparatory Academy: Senior Capstone Projects

Obesity, defined as having a BMI of 30 or higher has been a progressing health risk throughout the globe. With a spiked increase attributed to the introduction and popularity of fast food. America became a mascot and staple for obesity rates as its increase introduced the epidemic to the world. This affects smaller develops countries which adopt Americas culture and eating habits. In the comparison of First World Countries, many follow similar trends in weight apart from a select few. Each of the countries succumb to the issue due to their similar cultures, ideologies and living conditions. For example, countries …

Observations Of Whooping Crane Parental Provisioning Of Chicks, Glenn H. Olsen

Proceedings of the North American Crane Workshop

Crane chicks are dependent on parent birds for provisioning during the first few months of life, but no study has examined this provisioning in detail. In 2014 research staff at the U.S. Geological Survey, Eastern Ecological Science Center (formerly Patuxent Wildlife Research Center), in Laurel, Maryland, made multiple observations of parent whooping cranes (Grus americana) feeding or interacting with their chick during the 3 months from hatching to fledging. Both parents participated in the feeding of the chick and only 1 chick was raised by each pair of parent whooping cranes. Initially feeding frequency was low (0-20 times …

Don’T Forget To Wash! Water, Sanitation, And Hygiene Among Zambian Students, Katie Schmitz

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

Introduction: Water, sanitation, and hygiene practices in sub-Saharan Africa, including Zambia, have not met the Millennium Development Goals (MDGs) and remain inadequate to improve the overall health and wellbeing of most populations.

Methods: Survey research, interviews, WASH observations, and anthropometric assessment were conducted between May-June 2022 on 6-7th grade students within 6 Zambian schools.

Results: While hygiene knowledge was prominent, and handwashing stations and pit latrines were available, schools rarely supplied soap or toilet paper. Diarrheal and respiratory diseases were common and water shortages remain problematic with some students traveling long distances to reach a water source.

Discussion: As in …

Dental Decay In Zambian School Children In Eastern And Southern Provinces, Elizabeth Graham

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

Introduction: Dental caries is the most prevalent and infectious disease worldwide. Zambia has a high rate of vitamin A deficiency, and this deficiency is associated with dental caries.

Methods: Visual dental checks, interviewing, and anthropometric assessments were done on 781 Zambian primary school children.

Results: Caries rates are 20% among sample populations, males have more decay than females, first molars are the most decayed, a majority use toothbrushes to clean their teeth, and children who eat vitamin A rich foods are less likely to have dental caries.

Discussion: Caries’ rates in the Southern and Eastern provinces are higher than in …

Characterization Of Salt And Drought Tolerance In Sunflower (Helianthus Annuus L.), Sevgi Saylak

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

Consequent to the increasing world population, food sources are needed to be increased to meet the nutritional needs. However, due to natural processes and agricultural activities, the most destructive environmental factors that limit crop production, soil salinity, and drought-exposed areas are growing. As one of the major oilseed crops, sunflower (Helianthus annuus L.), is considered to be moderately tolerant to salt and drought. Although it can grow in arid to semi-arid regions, increasing salinity and drought might adversely affect sunflower production. This study aimed to investigate several sunflower germplasms' morphological responses to salt and drought stresses. For this purpose, …

Using Complex Behavior To Understand Brain Mechanisms In Health And Disease, Cassandra D. Gipson, Paul L. Soto, Erin S. Calipari, Donna M. Platt, John D. Salamone, Rick A. Bevins

Department of Psychology: Faculty Publications

At this point in the history of the science of behavior, a focus on neuroscience-based outcomes has become dominant in neuropsychiatric fields at the preclinical and clinical levels of analysis. The notion that behavior is caused by brain function, and that changing brain function can alter behavior, has fueled this push to understand these neurobiological mechanisms. Within this conceptual framework and the funding to incentivize its adoption, the neuroscience field grew rapidly with the goal to understand the relation between the brain and behavior. As such, a reductionist perspective emerged whereby neural manipulations of increasing sophistication became required for assessing …

Settler Colonial Origins Of Intimate Partner Violence In Indigenous Communities, Maia C. Behrendt

Department of Sociology: Dissertations, Theses, and Student Research

Indigenous women in the United States experience disproportionately higher rates of intimate partner violence (IPV) compared to their non-Indigenous counterparts. Through a framework of settler colonialism, this article examines how settler colonial gender practices disrupted and eroded generational patterns of gender roles and power relationships within Indigenous communities, contributing over time to today's higher levels of IPV perpetrated against Indigenous women. I argue that future research on IPV must attend to the historical, contemporary, and legal impacts of settler colonial policies and laws that contribute to increased rates of violence within marginalized and racialized communities. In this article, I first …

Biochar: Properties And Potential Benefits For Agricultural Soil In Rwanda, Andromede Uwase

Honors Program: Senior Projects (Public)

Physical and chemical soil degradation is becoming a major challenge for agricultural productivity in Rwanda, which is the most important part of the country’s economy. The wide spreading soil degradation in Rwanda is mainly a result of naturally poor soils coupled with unsustainable soil management leading to, for example, accelerated soil erosion, acidification, nutrient loss, compaction, and to decreasing yields. Biochar, as an end product of pyrolysis of biomass in the absence of oxygen, has been proposed as a soil amendment in remediation strategies because of its positive effects on soil productivity relevant parameters such as soil pH, structure, nutrient …

Relationships Between Proximity To Grocery Stores And Oklahoma Early Care And Education Classroom Nutrition Practices, Bethany D. Williams, Susan B. Sisson, Bryce Lowery, Dipti Dev, Diane M. Horm, Janis E. Campbell, Denise Finneran, Jennifer Graef-Downard

Department of Child, Youth, and Family Studies: Faculty Publications

The study purpose was to determine associations between proximity to grocery stores and Early Care and Education programs’ (i.e., ECEs) classroom nutrition practices and barriers, by ECE context (Head Start, community-based childcare [CBC], and family child care homes [FCCHs]). A statewide cross-sectional survey was implemented in Oklahoma ECEs. Directors reported classroom nutrition practices with the Nutrition and Physical Activity Self-Assessment tool, and barriers to implementation. Locations of 457 grocery stores statewide were determined by in-person audit. Geocoded ECEs were considered within a “low proximity” area if no grocery stores were available within a 0.25-mile radius for urban, or 10-mile radius …

Implementation Of Federal Waivers For Feeding Children In Early Care And Education During The Covid-19 Pandemic, Dipti Dev, Carly Hillburn, Jordan Luxa, Laura Lessard, Katherine W. Bauer, Caree Cotwright, Alison Tovar

Department of Child, Youth, and Family Studies: Faculty Publications

Objective: To capture Child and Adult Care Food Program (CACFP) state directors’ experiences implementing federal waivers for feeding children in early care and education (ECE) settings during coronavirus disease 2019.

Design: Qualitative semistructured interviews.

Setting: Virtual interviews with state CACFP directors.

Participants: Child and Adult Care Food Program directors from 21 states from December 2020 to May 2021.

Phenomenon of Interest: Implementation of state-level waivers.

Analysis: Qualitative thematic analysis.

Results: State directors reported that the coronavirus disease 2019 waivers allowed ECE programs to continue feeding children despite being closed or having limited enrollment. The meal pattern, noncongregate feeding, parent/guardian meal …

Root Exudates Impact Plant Performance Under Abiotic Stress, Yen Ning Chai, Daniel P. Schachtman

Department of Agronomy and Horticulture: Faculty Publications

Plant root exudates serve pivotal roles in supporting plant development and interactions with the physicochemical and biological factors in the rhizosphere. Under stress conditions, root exudation is involved in enhancing plant resource-use efficiency and facilitating the crosstalk between plant and soil microbes to ameliorate stress. Although there are a large number of root exudates that remain to be characterized, recent technological advancements have allowed for the function of many exudate compounds to be elucidated. In this review, we discuss current knowledge about the key root exudates that modulate plant resource-use efficiency under various abiotic stresses including drought, aluminum toxicity, phosphorus, …

Effect Of Feeding Cars On Digestibility And Fatty Acid Flow In Finishing Cattle Diets, John C. Gibbons, Mitchell M. Norman, Tyler J. Spore, Hannah C. Wilson, Kylie Butterfield, Andea K. Watson, Galen E. Erickson, Jonathan W. Wilson

Nebraska Beef Cattle Reports

An experiment was conducted to evaluate the impact of a liquid feed, Condensed Algal Residue Solubles (CARS) on diet digestibility and fatty acid flow to the small intestine. Three treatments included CARS at 0, 2.5, and 5% of the diet dry matter, replacing steam-flaked corn. The base diet included 73, 70.5, or 68% steam flaked corn, 15% dried distillers grains plus solubles, 8% alfalfa haylage, and 4% supplement. Inclusion of CARS in the diet did not affect dry matter or organic matter intake or digestibility of dry matter, organic matter or neutral detergent fiber. Amount of fatty acid flowing to …

Evaluation Of Green Grass On Nutrient Digestibility And Fatty Acid Flow In Cattle Finishing Diets, Aksel R. Wiseman, Tyler J. Spore, Mitchell M. Norman, Hannah C. Wilson, J. C. Macdonald, Andrea K. Watson, Galen E. Erickson

Nebraska Beef Cattle Reports

Six ruminally and duodenally cannulated steers were utilized in a 3 × 3 replicated Latin square experiment to test 0, 15, and 30% dietary inclusion of Green Grass (Sunseo Omega 3; Chungcheong Duk-Do, South Korea), a feed comprised of sesame meal, giant kelp, cassava, and sorghum (not currently approved to be fed in the US). Dry matter and fiber intake increased linearly with increased Green Grass inclusion. Dry matter and organic matter digestibility were not affected by Green Grass inclusion. Concentration of saturated fatty acids at the duodenum were similar for Green Grass 0 and Green Grass 15 with a …

Association Of Diet Qualitymeasured By Three A Priori-Defined Dietary Patterns With Gut Microbiota And Intestinal Permeability Among Obese Individuals, Sarah Eaton, Heather Rasmussen, Weiwen Chai

Department of Nutrition and Health Sciences: Faculty Publications

Objectives: The human gastrointestinal tract (GI)may play a critical role in the prevention of obesity and metabolic diseases. Considering the importance of a healthy diet for optimal health, this study examined associations of diet quality assessed by three a priori-defined dietary patterns (Healthy Eating Index 2010 [HEI-2010],Mediterranean Eating Pattern for Americans [MEPA], and Dietary Approaches to Stop Hypertension [DASH] with gut microbiota, short-chain fatty acids (SCFA) and intestinal permeabilitymarkers in adult obese participants.

Conclusions: Blautia abundance and inversely associated with intestinal permeability markers such as urinary 24-h sucralose levels suggesting diet quality may have positive impact on the human GI …

Intracellular Fate Of Bovine Milk Exosomes In Murine Bone Marrow-Derived Macrophages, Afsana Khanam, Janos Zempleni

Department of Nutrition and Health Sciences: Faculty Publications

Milk exosomes (MEs) and their microRNA cargos constitute novel bioactive food compounds, and bovine MEs (BMEs) are being considered for use in drug delivery. The internalization of MEs by macrophages and degradation in lysosomes (in all cells) limit biological activities. Here, we determined whether BMEs internalized by murine bone marrow-derived macrophages (BMDMs) retrofuse with the intralumenal membrane in the multivesicular body (MVB) for subsequent release into the extracellular space or whether BMEs are destined for degradation in lysosomes.

Conclusions: The retrofusion of BME-derived intralumenal MVBs and secretion of BME into the extracellular space is quantitatively minor in BMDMs. The majority …

Genetically Altered Bovine Milk Exosomes (Bmes) Evade Elimination Bymurine Bone Marrow-Derived Macrophages (Bmdms), Alice Ngu, Janos Zempleni

Department of Nutrition and Health Sciences: Faculty Publications

Objectives: To develop BMEs that evade elimination by BMDMs.

Conclusions: The elimination of BMEs UNL1 and UNL2 is significantly reduced compared unmodified BMEs in BMDM cultures. This is of great importance when using BMEs for delivering therapeutics.

Influence Of Landscape Attributes On Virginia Opossum Density, David A. Bernasconi, Wesley C. Dixon, Matthew T. Hamilton, James L. Helton, Richard B. Chipman, Amy T. Gilbert, James C. Beasley, Olin E. Rhodes Jr., Guha Dharmarajan

United States Department of Agriculture Wildlife Services: Staff Publications

TheVirginia opossum (Didelphis virginiana), North America's only marsupial, has a range extending from southern Ontario, Canada, to the Yucatan Peninsula, Mexico, and from the Atlantic seaboard to the Pacific. Despite the Virginia opossum's taxonomic uniqueness in relation to other mammals in North America and rapidly expanding distribution, its ecology remains relatively understudied. Our poor understanding of the ecology of this important mesopredator is especially pronounced in the rural southeastern United States. Our goal was to estimate effects of habitat on opossum density within an extensive multiyear spatial capture‐recapture study. Additionally, we compared the results of this spatial capture‐recapture …

Fertilizer Use In Aquaculture, Bartholomew W. Green

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

Aquaculture ponds traditionally are fertilized to stimulate primary productivity, which serves as the base of the pond natural food web and provides ancillary ecosystem services. Fertilizer can be made regularly or based on some water quality variable or measure of algal productivity. Nutrients from chemical fertilizers are available sooner for phytoplankton growth compared to organic fertilizers that first must undergo microbial decomposition before nitrogen and phosphorus concentrations increase. Primary production increases with increased fertilizer application if productivity is limited by primary nutrients rather than by light. In semi-intensive and intensive production systems, natural pond productivity enhanced by targeted fertilization protocols …

Carbon-Sensitive Pedotransfer Functions For Plant Available Water, Dianna K. Bagnall, Cristine L.S. Morgan, Michael Cope, Gregory M. Bean, Shannon Cappellazzi, Kelsey Greub, Daniel Liptzin, Charlotte L. Norris, Elizabeth Rieke, Paul Tracy, Ezra Aberle, Amanda Ashworth, Oscar Bañuelos Tavarez, Andy Bary, R. Louis Baumhardt, Alberto Borbón Gracia, Daniel Brainard, Jameson Brennan, Dolores Briones Reyes, Darren Bruhjell, Cameron Carlyle, James Crawford, Cody Creech, Steven Culman, William Deen, Curtis Dell, Justin Derner, Thomas Ducey, Sjoerd Willem Duiker, Miles Dyck, Benjamin Ellert, Martin Entz, Avelino Espinosa Solorio, Steven J. Fonte, Simon Fonteyne, Ann Marie Fortuna, Jamie Foster, Lisa Fultz, Audrey V. Gamble, Charles Geddes

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

Currently accepted pedotransfer functions show negligible effect of management-induced changes to soil organic carbon (SOC) on plant available water holding capacity (θAWHC), while some studies show the ability to substantially increase θAWHC through management. The Soil Health Institute's North America Project to Evaluate Soil Health Measurements measured water content at field capacity using intact soil cores across 124 long-term research sites that contained increases in SOC as a result of management treatments such as reduced tillage and cover cropping. Pedotransfer functions were created for volumetric water content at field capacity (θFC) and permanent wilting point (θPWP). New pedotransfer functions had …