Digital Commons Network^™

Trends In State/Territorial Obesity Prevalence By Race/Ethnicity Among U.S. Low-Income, Preschool-Aged Children, L. Pan, L. M. Grummer-Strawn, L. C. Mcguire, S. Park, H. M. Blanck

United States Public Health Resources

Background: Understanding state/territorial trends in obesity by race/ethnicity helps focus resources on populations at risk.

Objective: This study aimed to examine trends in obesity prevalence among low-income, preschool-aged children from 2008 through 2011 in U.S. states and territories by race/ethnicity.

Methods: We used measured weight and height records of 11.1 million children aged 2–4 years who participated in federally funded health and nutrition programmes in 40 states, the District of Columbia and two U.S. territories. We used logistic regression to examine obesity prevalence trends, controlling for age and sex.

Results: From 2008 through 2011, the aggregated obesity prevalence declined among …

Gender- And Race-Specific Metabolic Score And Cardiovascular Disease Mortality In Adults: A Structural Equation Modeling Approach—United States, 1988-2006, Carla I. Mercado

United States Public Health Resources

Objective: Consider all metabolic syndrome (MetS) components [systolic (SBP) and diastolic (DBP) blood pressures, waist circumference, HDL cholesterol, triglycerides (TG), and fasting glucose] and gender/race differential risk when assessing cardiovascular disease (CVD) risk.

Methods: We estimated a gender- and race-specific continuous MetS score using structural equation modeling and tested its association with CVD mortality using data from National Health and Nutrition Examination Survey III linked with the National Death Index. Cox proportional hazard regression tested the association adjusted for sociodemographic and behavior characteristics.

Results: For men, continuous MetS components associated with CVD mortality were SBP (hazard ratio 51.50, 95% confidence …

A Multicomponent Nutrient Bar Promotes Weight Loss And Improves Dyslipidemia And Insulin Resistance In The Overweight/Obese: Chronic Inflammation Blunts These Improvements, Joyce C. Mccann, Mark K. Shigenaga, Michele L. Mietus-Snyder, Ashutosh Lal, Jung H. Suh, Ronald M. Krauss, Ginny L. Gildengorin, Alisa M. Goldrich, Devan S. Block, Swapna V. Shenvi, Tara H. Mchugh, Don A. Olson, Bruce N. Ames

United States Public Health Resources

This study determined if twice-daily consumption

of a nutrient-dense bar intended to fill gaps in

Western diets, without other dietary/lifestyle requirements,

favorably shifted metabolic/anthropometric indicators

of dysregulation in a healthy direction. Three 8-wk

clinical trials in 43 healthy lean and overweight/obese

(OW/OB) adults, who served as their own controls, were

pooled for analysis. In less inflamed OW/OB [highsensitivity

C-reactive protein (hsCRP) <1.5], statistically

significant decreases occurred in weight (-1.1 ± 0.5 kg),

waist circumference (-3.1 ± 1.4 cm), diastolic blood

pressure (-4.1 ± 1.6 mmHg), heart rate [HR;-4.0 ± 1.7

beats per minute (bpm)], triglycerides (272638.2mg/dl),

insulin resistance (homeostatic model of insulin …

Apolipoprotein E And Protection Against Hepatitis E Viral Infection In American Non-Hispanic Blacks, Lyna Zhang, Ajay Yesupriya, Man -Huei Chang, Eyasu Teshale, Chong- Gee Teo

United States Public Health Resources

Hepatitis E viral (HEV) infection imposes a heavy health burden worldwide and is common in the United States. Previous investigations of risks addressed environmental and host behavioral/ lifestyle factors, but host genetic factors have not been examined. We assessed strength of associations between antibody to HEV (anti-HEV) immunoglobulin G seropositivity indicating past or recent HEV infection and human genetic variants among three major racial/ ethnic populations in the United States, involving 2434 non-Hispanic whites, 1919 non- Hispanic blacks, and 1919 Mexican Americans from the Third National Health and Nutrition Examination Survey, 1991-1994. We studied 497 single-nucleotide polymorphisms across 190 genes …

Incorporating Primary And Secondary Prevention Approaches To Address Childhood Obesity Prevention And Treatment In A Low-Income, Ethnically Diverse Population: Study Design And Demographic Data From The Texas Childhood Obesity Research Demonstration (Tx Cord) Study, Deanna M. Hoelscher, Nancy F. Butte, Sarah Barlow, Elizabeth A. Vandewater, Shreela V. Sharma, Terry Huang, Eric Finkelstein, Stephen Pont, Paul Sacher, Courtney Byrd-Williams, Abiodun O. Oluyomi, Casey Durand, Linlin Li, Steven H. Kelder

United States Public Health Resources

Background: There is consensus that development and evaluation of a systems-oriented approach for child obesity prevention and treatment that includes both primary and secondary prevention efforts is needed. This article describes the study design and baseline data from the Texas Childhood Obesity Research Demonstration (TX CORD) project, which addresses child obesity among low-income, ethnically diverse overweight and obese children, ages 2–12 years; a two-tiered systems-oriented approach is hypothesized to reduce BMI z-scores, compared to primary prevention alone.

Methods: Our study aims are to: (1) implement and evaluate a primary obesity prevention program; (2) implement and evaluate efficacy of a …

Tribal Water Rights: Exploring Dam Construction In Indian Country, Jerilyn Church, Chinyere O. Ekechi, Aila Hoss, Anika Jade Larson

United States Public Health Resources

Introduction – Tribal Environmental Public Health

The environment, particularly, land and water, play a powerful role in sustaining and supporting American Indian and Alaska Native communities in the United States. Not only is water essential to life and considered — by some Tribes — a sacred food in and of itself, but environmental water resources are necessary to maintain habitat for hunting and fishing. Many American Indian and Alaska Native communities incorporate locally caught traditional subsistence foods into their diets, and the loss of access to subsistence foods represents a risk factor for food security and nutrition status in indigenous …

Trends In Worker Hearing Loss By Industry Sector, 1981–2010, Elizabeth A. Masterson, James A. Deddens, Christa L. Themann, Stephen Bertke, Geoffrey M. Calvert

United States Public Health Resources

Background The purpose of this study was to estimate the incidence and prevalence of hearing loss for noise-exposed U.S. workers by industry sector and 5-year time period, covering 30 years.

Methods Audiograms for 1.8 million workers from 1981–2010 were examined. Incidence and prevalence were estimated by industry sector and time period. The adjusted risk of incident hearing loss within each time period and industry sector as compared with a reference time period was also estimated.

Results The adjusted risk for incident hearing loss decreased over time when all industry sectors were combined. However, the risk remained high for workers in …

Technical Note: Collection And Preparation Techniques Change Nutrient Composition Of Masticate Collected From Esophageally Fistulated Cattle, Jacqueline A. Musgrave, J. V. Judy, K. H. Jenkins, T. J. Klopfenstein, L. A. Stalker

Department of Animal Science: Faculty Publications

Two experiments determined effects of collection and preparation techniques on nutrient composition of masticate samples from esophageally fistulated cattle. In Exp. 1, 12 esophageally fistulated cattle were maintained on 2 precollection diets, high CP (24% CP; n = 6) or low CP (7.7% CP; n = 6), for 8 d. On d 9, the esophageal plug was removed, screen bottom bags were attached, and each cow was offered fresh grass. Immediately after fresh grass sample collection was complete, dry grass (hay) was offered and a sample was collected. Blood samples were collected and analyzed for serum urea nitrogen concentration. Masticate …

Physiological Responses Underlying The Perception Of Effort During Moderate And Heavy Intensity Cycle Ergometry, Kristen C. Cochrane, Terry J. Housh, Ethan C. Hill, Cory M. Smith, Nathaniel D.M. Jenkins, Joel T. Cramer, Glen O. Johnson, Richard J. Schmidt

Department of Nutrition and Health Sciences: Faculty Publications

This study examined patterns of responses for physiological and perceptual variables during cycle ergometry at a constant rate of perceived exertion (RPE) within the moderate and heavy exercise intensity domains. Nineteen (mean age 21.3 ± 0.5 years; 43.4 ± 2.0 mL·kg⁻¹·min⁻¹ VO_2Peak) moderately trained cyclists performed an incremental test to exhaustion and two 60 min constant RPE rides at the RPE corresponding to the gas exchange threshold (RPE_GET) and 15% above the GET (RPE_GET+15%). Oxygen consumption (VO₂), respiratory exchange ratio (RER), heart rate (HR), minute ventilation (V_E), …

Cloning And Expression Of Ebi3 And P28 Subunits Of Human Interleukin 27 In E. Coli, Ameneh Koochaki, Mojgan Bandehpour, Sam Massahi, Mahrou Sadri, Bahram Kazemi

Department of Nutrition and Health Sciences: Faculty Publications

Background: Interleukin (IL)-27 is a heterodimeric cytokine belonging to IL-12 and IL-23 families, secreted by antigen presenting cells(APCs). The IL-27 is composed of 2 subunits: Epstein-Barr virus induced gene 3 (EBI3) and p28. IL-27 is an anti-inflammatory cytokine which has an inhibitory effect on Th17 population and suppress the IL-17 expression. It is suggested that IL-27 could be a potent drug candidate for treating auto immune diseases.

Materials and Methods: The EBI3 and p28 subunits of human interleukin 27 were constructed into plasmid vectors; they sub-cloned into pETDuet-1 expression vector in restriction sites of BamHI, SacI and NotI. Subsequently the …

Functional Approach To Condition, Dustin J. Wilgers, Eileen A. Hebets

Eileen Hebets Publications

Animal signaling is commonly thought to be costly. Signaling costs can arise via a variety of avenues, including energy expenditure, predator attraction, and so on (reviews in Zuk and Kolluru, 1998; Kotiaho, 2001), and are predicted to increase with signal expression (e.g., size, amplitude, and intensity; Johnstone, 1997). Due to these costs, signaler condition, which is hypothesized to be a reflection of a signaler’s genetic quality, is expected to influence the level of signal expression one can afford (Zahavi, 1975), resulting in a positive correlation between signaler condition and signal expression – that is, condition-dependent signaling (Zahavi, 1977; West-Eberhard, 1979; …

How Do Free-Living, Lerp-Forming, And Gall-Inducing Aphalaridae (Hemiptera: Psylloidea) Affect The Nutritional Quality Of Eucalyptus Leaves?, Anamika Sharma, James Allen, Soundararajan Madhavan, Anantanarayanan Raman, Gary S. Taylor, Murray J. Fletcher

Department of Biochemistry: Faculty Publications

About 380 described species of Psylloidea occur on Eucalyptus in Australia. These show differences in diversification, feeding behavior, and apparent patterns of development. We analyzed the quality of nutrients used by three species of Aphalaridae belonging to different feeding guilds on three species of Eucalyptus. We evaluated the quantity and quality of total nonstructural carbohydrates (TNC), δ¹³C and δ¹⁵N isotope ratios, amino acids, and fatty acids. In general, TNC levels were greater in infested leaves than in uninfested leaves of the three species of Eucalyptus. TNC levels in the leaves of E. macrorhyncha F. …

Salivary Gland Structure Of Ctenarytaina Eucalypti (Maskell, 1890) (Hemiptera) And Phloem Exudate In Eucalyptus Globulus Labillarière, 1799 (Myrtaceae), Anamika Sharma, Soundararajan Madhavan, Anantanarayanan Raman, Gary S. Taylor, Murray J. Fletcher

Department of Biochemistry: Faculty Publications

The structure of the salivary glands of the free-living aphalarid Ctenarytaina eucalypti, which infests multiple species of Eucalyptus in Australasia and has been introduced into many other regions of the world, is described and illustrated. The principal salivary gland is multilobed whereas the accessory gland is tubular. 1-D electrophoresis revealed proteins of approximately 58 and 64 kDa in the salivary gland extracts and proteins of similar molecular weights in the extracted plant exudates, including phloem, from infested leaves and tender shoots of E. globulus. Proteins that could fall within this range include, but are not limited to, …

Use Of Designer Nucleases For Targeted Gene And Genome Editing In Plants, Donald P. Weeks, Martin H. Spalding, Bing Yang

Department of Biochemistry: Faculty Publications

The ability to efficiently inactivate or replace genes in model organisms allowed a rapid expansion of our understanding of many of the genetic, biochemical, molecular and cellular mechanisms that support life. With the advent of new techniques for manipulating genes and genomes that are applicable not only to single-celled organisms, but also to more complex organisms such as animals and plants, the speed with which scientists and biotechnologists can expand fundamental knowledge and apply that knowledge to improvements in medicine, industry and agriculture is set to expand in an exponential fashion. At the heart of these advancements will be the …

Helicoverpa Zea (Lepidoptera: Noctuidae) And Spodoptera Frugiperda (Lepidoptera: Noctuidae) Responses To Sorghum Bicolor (Poales: Poaceae) Tissues From Lowered Lignin Lines, Patrick F. Dowd, Scott E. Sattler

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

The presence of lignin within biomass impedes the production of liquid fuels. Plants with altered lignin content and composition are more amenable to lignocellulosic conversion to ethanol and other biofuels but may be more susceptible to insect damage where lignin is an important resistance factor. However, reduced lignin lines of switchgrasses still retained insect resistance in prior studies. Therefore, we hypothesized that sorghum lines with lowered lignin content will also retain insect resistance. Sorghum excised leaves and stalk pith Sorghum bicolor (L.) Moench (Poales: Poaceae) from near isogenic brown midrib (bmr) 6 and 12 mutants lines, which have lowered lignin …

Stability Of Transgene Expression In Reduced Allergen Peanut (Arachis Hypogaea L.) Across Multiple Generations And At Different Soil Sulfur Levels, Manju Chandran, Ye Chu, Soheila J. Maleki, Peggy Ozias-Akins

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

Transgenic peanut (Arachis hypogaea L.) containing a gene designed for RNA interference (RNAi) showed stable complete silencing of Ara h 2 and partial silencing of Ara h 6, two potent peanut allergens/proteins, along with minimal collateral changes to other allergens, Ara h 1 and Ara h 3, across three generations (T₃, T₄, and T₅) under field conditions. Different soil sulfur levels (0.012, 0.3, and 3.0 mM) differentially impacted sulfur-rich (Ara h 2, Ara h 3, and Ara h 6) versus sulfur-poor (Ara h 1) proteins in non-transgenic versus transgenic peanut. The sulfur level …

2015 Beef Cattle Report (Complete)

Nebraska Beef Cattle Reports

Table of Contents

Cow/Calf

Impact of Heifer Development System on Subsequent Gain and Reproduction 5

Genetic Parameter Estimates for Calving Difficulty and Birth Weight in a Multibreed Population 8

Estimation of British- and Continental-Specific Heterosis Effects for Birth, Weaning, and Yearling Weight in Cattle 10

Using Sugar Beet Pulp to Replace Wheat Straw when Limit Feeding Late Gestation Beef Cows 12

Supplementing Cow-Calf Pairs Grazing Smooth Bromegrass 14

Effects of Calf Age at Weaning on Cow and Calf Performance and Feed Utilization in an Intensive Production System 16

An Economic Analysis of Conventional and Alternative Cow-Calf Production Systems 19

Effect …

Effect Of Corn Plant Maturity On Yield And Nutrient Quality Of Corn Plants, Cassandra A. Row, Adam L. Shreck, Robert G. Bondurant Bondurant, Curtis J. Bittner, Jana L. Harding, James C. Macdonald, Terry J. Klopfenstein, Galen E. Erickson

Nebraska Beef Cattle Reports

Two corn plots (short season, 102-day, and normal season, 111-day corn) were serially harvested to evaluate nutrient, digestibility, and yield change over the duration from half-milk line through black layer. Digestibility of the corn plant decreased as corn plant maturity and NDF content increased. The lower leaf in the normal season plot decreased in digestibility, but did not change in the short season plot. Little change was observed in the digestibility of the internodes across time. The NDF content of the upper plant increased in both plots. The internodes increased in NDF content across time in both plots. The results …

Effects Of Dietary Fat Source And Monensin On Methane Emissions, Vfa Profile, And Performance Of Finishing Steers, Anna C. Pesta, Andrea K. Watson, Robert G. Bondurant Bondurant, Samodha C. Fernando, Galen E. Erickson

Nebraska Beef Cattle Reports

A finishing study was conducted to evaluate the effects of dietary fat source and presence or absence of monensin on performance, methane (CH4) emissions, and ruminal VFA profile of cattle. No effects on performance or VFA profile were observed. Inclusion of modified distillers grain plus solubles (MDGS) in the diet tended to increase measures of CH4 production when compared to other fat sources (corn oil or tallow), while inclusion of monensin in the finishing diet was not significant for CH4 production.

Impact Of Heifer Development System On Subsequent Gain And Reproduction, Hazy R. Nielson, John D. Harms, Adam F. Summers Summers, Rebecca A. Vraspir, Rick N. Funston

Nebraska Beef Cattle Reports

Replacement heifers from 2 different calving herds (March and May) were fed ad libitum hay and 4 lb of supplement/day, or were allowed to graze meadow and received 1 lb of supplement/day from mid-January to mid-April prior to both breeding seasons. Heifers from both calving herds that received hay had a greater average daily gain during the treatment period compared with meadow grazing heifers. However, heifers grazing meadow experiencedcompensatory gain during their respective breeding season, resulting in similar body weights at pregnancy diagnosis for March-calving heifers. The proportion of heifers that attained pubertybefore breeding and became pregnant was similar between …

Evaluation Of Changes In Nutritional Quality Of Corn Residue Over Time, Mandi Jones, James C. Macdonald, Terry J. Klopfenstein Klopfenstein, Galen E. Erickson, Keith Glewen, Andrea K. Watson

Nebraska Beef Cattle Reports

Irrigated corn residue was sampled across time in order to determine changes in quality and proportion of corn residue as the plant dried and was exposed to effects of weathering. Corn plants from two hybrids were planted on two different planting dates and harvested at periodic intervals from August 2012 to December 2012. Proportions of stem, blade/sheath, husk/shank, and cob made up smaller components of total plant DM as it matured, with the largest relative reduction occurring in the blade/sheath or stem. Hybrid impacted TDN values primarily because the 119 day hybrid was less mature at the early sampling dates.

Effects Of Three Aggressive Implant Protocols On Feedlot Performance And Carcass Traits Of Calf-Fed Steers, F. Henry Hilscher, Galen E. Erickson, Marshall N. Streeter Streeter, Robert J. Cooper, Bill D. Dicke, D. J. Jordon, Tony L. Scott

Nebraska Beef Cattle Reports

A commercial feedlot study compared the effects of three initial implant strategies [Revalor® 200 (Rev200), Revalor® IS (RevIS), or Revalor® XS (RevXS)] followed by a Revalor 200 terminal implant on performance and carcass characteristics of feedlot cattle. No differences in final BW, DMI, ADG, or F:G were observed. The RevXS treatment resulted in larger LM area, lower calculated yield grades, less back fat, and a greater percentage of yield grade 1 carcasses. The Rev200 and the RevXS treatments had a higher percentage of carcasses that graded select compared to RevIS suggesting initial implant has little impact on feedlot performance but …

Effect Of Zinc And Copper Source On Finishing Steer Feedlot Performance And Incidence Of Footrot, E. Henry Hilscher, Galen E. Erickson, Scott B. Laudert Laudert, Robert J. Cooper, Bill D. Dicke, D. J. Jordon, Tony L. Scott

Nebraska Beef Cattle Reports

A commercial feedlot study compared the effects of the combination of inorganic and organic copper and zinc trace minerals to basic copper chloride and zinc hydroxychloride trace minerals on performance and carcass characteristics and the incidence of footrot in feedlot cattle. There were no differences in DMI, ADG, and F:G. Hot carcass weight and carcass traits were also unaffected by source of trace mineral supplementation. Cattle treated for footrot were not different between treatments. Cattle that received basic copper chloride and zinc hydroxychloride trace mineral supplement performed similar to cattle that received a traditional trace mineral program.

Evaluating Two Rates Of Monensin Fed During The Grain Adaptation Period On Cattle Performance And Carcass Characteristics, Marie E. Harris, Galen E. Erickson, Karla H. Jenkins Jenkins, Matt K. Luebbe

Nebraska Beef Cattle Reports

Performance and carcass characteristics were evaluated when feeding two rates of monensin in feedlot adaptation diets. Monensin was supplemented at either 360 or 480 mg/head/day during the adaptation period. During the adaptation period, interim body weight was greater and dry matter intake was less for steers fed the 360 mg/head/day treatment of monensin. Subsequently, an improvement in average daily gain and feed efficiency was observed with the 360 mg/head/day treatment. However, there were no statistical differences in final performance and carcass characteristics. These results suggest it is not beneficial to feed the 480 mg/head/day rate of monensinin the adaptation period.

16.2 Contributors

Journal of the National Collegiate Honors Council Online Archive

No abstract provided.

The Relevance Of Maize Pollen For Assessing The Extent Of Maize Production In Chaco Canyon, Carrie C. Heitman, Phil R. Geib

Department of Anthropology: Faculty Publications

Opinion is hardly unanimous, but many authors endorse the idea that Chaco Canyon is and was a marginal place for growing corn (Zea mays), a chief source of food energy for Puebloan groups in the Southwest. Poor soils with “toxic” levels of salts, inadequate and unpredictable precipitation, and a short growing season have all been identified as contributing to the agricultural marginality of the place (Benson 2011a; Bryan 1954; Force et al. 2002; Judd 1954:59–61). Benson has been the most vocal proponent of this view of late, and his research has culminated in the conclusion that “the San Juan Basin, …

Case Study: Producer Concerns And Perceptions Regarding The Effect Of Methane On Cattle Production And The Environment: A Survey Of Nebraska Producers, B. M. Boyd, A. Jones, Lisa Franzen-Castle, K. Jenkins, Richard J. Rasby, Matt K. Luebbe, Richard R. Stowell, Samodha C. Fernando, Galen E. Erickson

Department of Animal Science: Faculty Publications

Enteric methane production from cattle and its effect on climate change has been a topic of debate. Multiple studies have explored methods to reduce cattle enteric methane production while simultaneously improving performance. However, most strategies developed have not been widely implemented by cattle producers. Knowledge of producer concerns and perceptions on methane production from cattle and its effect on the environment may be limited. Therefore, the objectives of this survey were to determine what Nebraska producers know about methane production by cattle and how it affects performance and to determine whether different age groups, regions of Nebraska, and production size …

Optimizing The Use Of Fibrous Residues In Beef And Dairy Diets, James C. Macdonald, G. E. Erickson, P. J. Kononoff, T. J. Klopfenstein

Department of Animal Science: Faculty Publications

Increased corn prices over the past decade have altered land use away from traditional forage in favor of corn. Accordingly, beef and dairy producers have had to adopt non-traditional forage resources into their production systems, many of which have become available as a result of increased corn production. Byproducts of the wet and dry milling industries have been used to replace both corn and forage in beef and dairy diets. Byproducts containing corn bran have large amounts of readily digestible hemicellulose. The use of byproducts may increase milk production, ADG, and G:F in dairy, beef growing, and beef finishing diets, …

Accounting For The Short Term Substitution Effects Of Walking And Cycling In Sustainable Transportation, Daniel P. Piatkowski, Kevin J. Krizek, Susan L. Handy

Community and Regional Planning Program: Faculty Scholarly and Creative Activity

The environmental benefits of bicycling and walking depend on the degree to which their use substitutes for car driving. Assuming that every walking and bicycling trip replaces a driving trip is likely to produce overestimates of the potential for such modes to reduce vehicle travel and city-scale greenhouse gas emissions. Measuring this ‘‘substitution effect’’ is not straightforward. There are many dimensions of the substitution effect, including trip type, substituting mode, extent, time horizon, and activity patterns. Previously used approaches to measure substitution include indirect inference and direct questioning. This study piloted an intercept survey using the direct questioning approach at …

Candida Albicans Quorum Sensing Molecules Stimulate Mouse Macrophage Migration, Jessica C. Hargarten, Tyler C. Moore, Thomas M. Petro, Kenneth W. Nickerson, Audrey L. Atkin

Kenneth Nickerson Papers

The polymorphic commensal fungus Candida albicans causes life-threatening disease via bloodstream and intra-abdominal infections in immunocompromised and transplant patients. Although host immune evasion is a common strategy used by successful human fungal pathogens, C. albicans provokes recognition by host immune cells less capable of destroying it. To accomplish this, C. albicans white cells secrete a low-molecular-weight chemoattractive stimulant(s) of macrophages, a phagocyte that they are able to survive within and eventually escape from. C. albicans opaque cells do not secrete this chemoattractive stimulant( s). We report here a physiological mechanism that contributes to the differences in the interaction of C. …