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Biotinyl-Methyl 4-(Amidomethyl)Benzoate Is A Competitive Inhibitor Of Human Biotinidase, Keyna Kobza, Kittichai Chaiseeda, Gautam Sarath, James M. Takacs, Janos Zempleni

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

Posttranslational modification of histones by biotinylation can be catalyzed by both biotinidase (BTD) and holocarboxylase synthetase. Biotinylation of histones is an important epigenetic mechanism to regulate gene expression, DNA repair, and chromatin remodeling. The role of BTD in histone biotinylation is somewhat ambiguous, given that BTD also catalyzes removal of the biotin tag from histones. Here, we sought to develop BTD inhibitors for future studies of the role of BTD in altering chromatin structure. We adopted an existing colorimetric BTD assay for use in a novel 96-well plate format to permit high-throughput screening of potential inhibitors. Biotin analogs were chemically …

Chapter 19. Remediation Of Drinking Water For Rural Populations, W. J. Hunter

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

Nitrate is the most common nitrogen contaminant in raw water supplies. In rural areas agricultural activities that involve the use of fertilizers and animal manures are major sources of nitrate contamination. Several processes are currently available that can effectively remove nitrate from raw water. Systems that are suitable for small rural communities include reverse osmosis, ion exchange, and electrodialysis. However, all of these systems move nitrate from raw water and concentrate it in a reject water or brine. Disposal of the reject water can be a major expense as well as an environmental issue. Several emerging systems are under development …

Control Of Rhyzopertha Dominica In Stored Rough Rice Through A Combination Of Diatomaceous Earth And Varietal Resistance, Yaowaluk Chanbang, Frank H. Arthur, Gerald E. Wilde, James E. Throne

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

Adults of Rhyzopertha dominica (F.), the lesser grain borer, were exposed on four varieties of rough rice with Dobie indices of susceptibility of 1.1 to 1.1 (low), and four varieties with Dobie indices of susceptibility of 3.4 to 3.8 (high). The varieties with low and high Dobie indices were classified as resistant and susceptible, respectively, to R. dominica. The purpose of the study was to evaluate control of R. dominica through the use of diatomaceous earth (DE) in combination with rice varieties that were either susceptible or resistant to R. dominica. The rice was treated with varying rates of …

Auditing And Assessing Air Quality In Concentrated Feeding Operations, N. A. Cole, R. Todd, B. Auvermann, D. B. Parker

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

The potential adverse effects of concentrated animal feeding operations (CAFO) on the environment are a growing concern. The air quality issues of most concern to CAFO vary but generally include ammonia, hydrogen sulfide, particulate matter, volatile organic compounds, greenhouse gases, and odors. Air pollutants may be regulated by federal and state laws or by nuisance complaints. The United States Environmental Protection Agency, and poultry, swine, and dairy industries recently agreed to the National Air Emissions Monitoring System to fund research on atmospheric emissions from production farms in the United States. Air quality regulations may be based on actual emissions, atmospheric …

Evaluation Of Beef Cattle Operations Utilizing Different Seasons Of Calving, Weaning Strategies, Postweaning Management, And Retained Ownership, R. E. Kruse, M. W. Tess, E. E. Grings, R. E. Short, R. K. Heitschmidt, W. A. Phillips, H. S. Mayeux

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

Data from a 3-yr study in Montana were utilized to evaluate impacts of season of calving, weaning strategy, and retained ownership of steer calves on enterprise profitability. Calving seasons were late winter (LW), early spring (ES), or late spring (LS). Each season had 2 weaning times: 190 (LW190, ES190) or 240 (LW240, ES240) d for LW and ES, and 140 (LS140) or 190 (LS190) d for LS. Backgrounding options included shipping steers to Oklahoma (OK1), or backgrounding in Montana to a constant age (MT2) or weight (MT3). Steers from OK1 and MT2 were finished in Oklahoma in confinement or via …

Characteristics Of Beef Finished On Wet Distillers Grains With Varying Types And Levels Of Roughage, Blaine E. Jenschke, Joshua R. Benton, Chris R. Calkins, Timothy P. Carr, Kent M. Eskridge, Terry J. Klopfenstein, Galen E. Erickson

Nebraska Beef Cattle Reports

Beef knuckles (n = 160) were obtained from source-verified cattle finished on 30% wet distillers grains plus solubles enriched with varying levels of alfalfa hay, corn silage, or corn stalks based on NDF. Our objectives were to determine if roughage inclusion, in conjunction with wet distillers grains plus solubles and cattle location affects beef flavor. Data from this study indicate type and level of roughage inclusion and cattle location have minimal effects on fatty acid profiles and sensory properties of the M. Rectus femoris. However, individual fatty acids of subcutaneous and intramuscular fat were significantly correlated with liver-like off flavor.

Evaluation Of Methods For Dry Matter Determination Of Ethanol Byproducts, Mallorie F. Wilken, Galen E. Erickson, Joshua R. Benton, Crystal D. Buckner, Terry J. Klopfenstein, Kip Karges, Matt Gibson

Nebraska Beef Cattle Reports

Traditional wet distillers grains plus solubles, modified distillers grains, Dakota Bran Cake, and distillers solubles were sampled and replicates tested using oven drying (n = 8) at 105°C and 60°C, vacuum oven drying (n = 3) and toluene distillation process (n = 8). Two replicates were evaluated using Karl Fischer titration. Oven drying was compared to toluene distillation as the standard. Oven drying at 60°C for 24 hours resulted in the same DM (P > 0.10) as toluene distillation for wet byproducts.

Livestock Protection Dogs For Deterring Deer From Cattle And Feed, Kurt C. Vercauteren, Michael J. Lavelle, Gregory Phillips

United States Department of Agriculture Wildlife Services: Staff Publications

Disease transmission between wildlife and livestock is a worldwide issue. Society needs better methods to prevent interspecies transmission to reduce disease risks. Producers have successfully used livestock protection dogs (LPDs) for thousands of years to reduce predation. We theorized that LPDs raised and bonded with cattle could be used to also reduce risk of bovine tuberculosis (Myobacterium bovis; TB) transmission between white-tailed deer (Odocoileus virginianus) and cattle by minimizing contact between the 2 species and use of cattle feed by deer. We evaluated 4 LPDs over 5 months, utilizing 2 data collection methods (direct observation and …

To Beef Or Not To Beef: Defining Food Security And Insecurity In Tucumán Argentina, Ariela Zycherman

Ecological and Environmental Anthropology (University of Georgia)

Anthropologists have had a long and rich history of drawing out the cultural importance of diet and the beliefs and rituals that are associated with it. Many anthropologists combine this knowledge with biological data to create a more comprehensive understanding of the diet. This skill becomes particularly important in understanding the difficulties of defining terms like food security and food insecurity among vulnerable populations. Popular working definitions focus primarily on the diet as being a nutritious entity that leads to a healthy and active lifestyle. While these definitions weigh heavily on the biological importance of diet, they deal with the …

Testing Multigenerational Colonization Of Carrion By Blow Flies In The Great Plains, Timothy E. Huntington, David O. Carter, Leon G. Higley

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

The relationship between carrion and blow flies is well understood, but in situations where fresh carrion sources are unavailable, as may occur on the Great Plains, the potential for multigenerational colonization of a single carcass exists. By testing this possibility through a replicated choice/no-choice experiment using pig carcasses, we were able to demonstrate that multigenerational colonization of carrion by blow flies does not occur. Fresh pig carcasses were exposed to blow fly infestation, then placed in insect exclusion cages. After the emergence of this first generation of blow fly adults, "choice" cages were supplied with a fresh pig cadaver. No …

Book Review: Managing Biodiversity In Agricultural Ecosystems Edited By D.I. Jarvis, C. Padoch, And H.D. Cooper, Richard K. Baydack

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Managing Biodiversity in Agricultural Ecosystems is a series of 18 edited contributions that investigate a vast body of material relating to the broad category of "agricultural biodiversity." This subject is of increasing importance across the Great Plains of North America as we strive to ensure that our planet is able to meet the needs of the present generation without compromising the abilities of future generations to meet theirs. As such, the editors have sequenced and categorized the contributions so as to ensure that treatment of a wide range of topics- crop genetic resources; livestock genetic resources; aquatic biodiversity; pollinator diversity; …

Pacifier Stiffness Alters The Dynamics Of The Suck Central Pattern Generator, Emily Zimmerman, Steven M. Barlow

Department of Special Education and Communication Disorders: Faculty Publications

Variation in pacifier stiffness on non-nutritive suck (NNS) dynamics was examined among infants born prematurely with a history of respiratory distress syndrome. Three types of silicone pacifiers used in the NICU were tested for stiffness, revealing the Super Soothie™ nipple is 7 times stiffer than the Wee™ or Soothie™ pacifiers even though shape and displaced volume are identical. Suck dynamics among 20 preterm infants were subsequently sampled using the Soothie™ and Super Soothie™ pacifiers during follow-up at approximately 3 months of age. ANOVA revealed significant differences in NNS cycles/min, NNS amplitude, NNS cycles/burst, and NNS cycle periods as a function …

Respiratory Distress Syndrome Degrades The Fine Structure Of The Non-Nutritive Suck In Preterm Infants, Susan Stumm, Steven M. Barlow, Meredith Estep, Jaehoon Lee, Susan Cannon, Joy Carlson, Donald Finan

Department of Special Education and Communication Disorders: Faculty Publications

Aims and Objectives—Suck development is a challenging hurdle for preterm infants who endure an extensive oxygen history due to respiratory distress syndrome (RDS). The fine structure of the non-nutritive suck (NNS) was studied in preterm infants according to RDS severity.

Design and Methods—Recordings of NNS were completed cribside in the neonatal intensive care unit (NICU) in 55 preterm infants distributed among one healthy control group and two RDS infant groups. NNS pressure amplitude (cmH₂0) and within-burst suck cycle period (ms) were the dependent measures extracted from digitized records of pacifier nipple compression pressure.

Results and Conclusions—RDS preterm infants …

Nitrogen Fertilizer Rate And Weather Dictate Nutritive Value Of Fall Stockpiled Bermudagrass, John A. Guretzky, Jeff Ball, Billy J. Cook

Department of Agronomy and Horticulture: Faculty Publications

Stockpiled bermudagrass [Cynodon dactylon (L.) Pers. ‘Midland’] as a standing forage may meet nutritional needs of beef cows during winter. Our objective was to evaluate accumulation and nutritive value of fall stockpiled bermudagrass in response to N fertilization rate, N application date, and harvest date. Research was conducted near Burneyville, OK from 2000 to 2003. Fertilization rates included 0, 50, 100, and 150 lb N per acre applied on 15 August, 1 September, 15 September, 1 October, and 15 October. Forage accumulation was measured 10 days after the first killing frost; thereafter, crude protein (CP), acid detergent fiber (ADF), …

The Effect Of Feeding Dried Distillers Grains Plus Solubles On Milk Production And Excretion Of Urinary Purine Derivatives, B. N. Janicek, P. J. Kononoff, A. M. Gehman, P. H. Doane

Department of Animal Science: Faculty Publications

Two studies were performed to evaluate the effects of dried distillers grains with solubles (DDGS) on the lactational performance of dairy cows. The intent of experiment 1 was to evaluate the effects of feeding increasing concentrations of DDGS on the feed intake and production of Holstein dairy cows. Twenty multiparous Holstein cows averaging 76 ± 24 d in milk and 638 ± 68 kg of body weight were randomly assigned to one of five 4 × 4 Latin squares. During each of the 28-d periods, cows were offered 1 of 4 diets: 1) control, 0% DDGS, 2) 10% DDGS, 3) …

A New Heat Load Index For Feedlot Cattle, J. B. Gaughan, Terry L. Mader, S. M. Holt, A. Lisle

Department of Animal Science: Faculty Publications

The ability to predict the effects of extreme climatic variables on livestock is important in terms of welfare and performance. An index combining temperature and humidity (THI) has been used for more than 4 decades to assess heat stress in cattle. However, the THI does not include important climatic variables such as solar load and wind speed (WS, m/s). Likewise, it does not include management factors (the effect of shade) or animal factors (genotype differences). Over 8 summers, a total of 11,669 Bos taurus steers, 2,344 B. taurus crossbred steers, 2,142 B. taurus × Bos indicus steers, and 1,595 B. …

Evaluation And Application Of The Cpm Dairy Nutrition Model, L. O, Tedeschi, W. Chalupa, E. Janczewski, D. G. Fox, C. Sniffen, R. Munson, Paul J. Kononoff, R. Boston

Department of Animal Science: Faculty Publications

The Cornell-Penn-Miner (CPM) Dairy is an applied mathematical nutrition model that computes dairy cattle requirements and the supply of energy and nutrients based on characteristics of the animal, the environment and the physicochemical composition of the feeds under diverse production scenarios. The CPM Dairy was designed as a steady-state model to use rates of degradation of feed carbohydrate and protein and the rate of passage to estimate the extent of ruminal fermentation, microbial growth, and intestinal digestibility of carbohydrate and protein fractions in computing energy and protein post-rumen absorption, and the supply of metabolizable energy and protein to the animal. …

Effect Of Feeding Das-59122-7 Corn Grain And Nontransgenic Corn Grain To Individually Fed Finishing Steers, T. J. Huls, G. E. Erickson, T. J. Klopfenstein, Matt K. Luebbe, K. J. Vander Pol, D. W. Rice, B. Smith, M. Hinds, F. Owens, M. Liebergesell

Department of Animal Science: Faculty Publications

An experiment was conducted to evaluate feeding transgenic corn containing the cry34Ab1 and cry35Ab1 genes from a Bacillus thuringiensis strain and the phosphinothricin acetyltransferase (pat) gene from Streptomyces viridochromogenes to finishing cattle compared with nontransgenic corn. Expression of the cry34Ab1 and cry35Ab1 genes confers resistance to corn rootworms, and the pat gene confers tolerance to herbicides containing glufosinate-ammonium. Sixty crossbred steers (396 kg) were individually fed either transgenic corn (DAS-59122-7; 59122), a near-isogenic, nontransgenic control (Control), and a conventional, nontransgenic corn for 109 d to evaluate nutritional equivalency (20 steers/treatment). The corn was coarsely rolled (geometric mean diameter = 4,200 …

Nebraska Greenscene: Annual Publication Of The University Of Nebraska-Lincoln's Department Of Agronomy And Horticulture

Department of Agronomy and Horticulture: Annual Newsletters

CONTENTS

Letter from the Head . 3

Alumni news:

Life Decisions. 4

Hot Peppers. 4

Special Greetings from Uruguay. 6

Twenty Years and Growing . 7

Staff news:

A Word with Mitch Montgomery, Ruth Miller, and Charlene Wendt. 5

Articles:

Green Scene Investigation. 8

Reflecting Back . 11

Flaming . 13

Crop Plant Water Use. 14

Skip–Row Corn. 15

Promotions and Tenure. 6

Student news:

Meet Kelsey Latschaw. 10

Meet Jessica Milby. 11

Own Time, Any Time Tour. 12

Photo Contest Winners . 13

Asynchronous Learning Networks: Policy Implications For Minority Serving Institutions And For Leaders Addressing Needs Of Minority Learners, Janet K. Poley

Department of Agricultural Leadership, Education, and Communication: Faculty Publications

For minority serving institutions, policies that support learners call for decisions about equity, quality, cost, impact on national economic performance and international global relationships.

Changing U.S. demographics and globalization factors of the type described by Thomas Friedman in The World Is Flat (rapidly expanding technology infrastructure, politics, innovation) [1] are creating the environment within which policies in this country and around the world are and will be developed well into the first 25 years of the century. This paper is focused on the Minority Serving Institutions including formally designated MSIs as well as other public and private institutions desiring to …

Block And Bridle Annual, 2008

Block and Bridle Annual (1933–2021)

Table of Contents:

Letter from President
From the Department Head
Letter from Historian
2008 Block and Bridle Honoree: Jay Wolf
Animal Science Faculty
  Block & Bridle Members
Block & Bridle Officers
Block & Bridle Initiates
Block & Bridle Advisors
Block & Bridle Senior Tributes
2007 Honors Banquet
2007 Block & Bridle Awards
2007-2008 Calendar of Events
Treasurer’s Report
Initial Meeting Secretary's Report
Programs
Socials
Big Red Welcome
State Fair Beef Pit
Steak Fry
National Convention
Little AK-SAR-BEN
Little AK-SAR-BEN Winners
Kid’s Day
Big Red Beef Show
State FFA
Block & Bridle Honoree Trip
Livestock Judging Team
Meats Judging Team
MAEC …

2008 Nebraska Beef Cattle Report Summaries, Richard J. Rasby, Galen E. Erickson, Dennis R. Brink

University of Nebraska-Lincoln Extension: Historical Materials

Reports on recent beef research are briefly summarized in this publication. Summaries of the research featured in the 2008 Beef Report appear here. Topics include cow-calf, growing, finishing and beef products.

2008 Beef Cattle Report, Dennis R. Brink

University of Nebraska-Lincoln Extension: Historical Materials

2008 compilation of articles on University of Nebraska–Lincoln beef cattle research in four areas: cow/calf, growing, beef feedlot, beef products and analytical methods.

Ec08-278 Grazing Crop Residues With Beef Cattle, Richard J. Rasby, Galen E. Erickson, Terry Klopfenstein, Darrell R. Mark

University of Nebraska-Lincoln Extension: Historical Materials

Grazing cattle on crop residue is a valuable feed assets for livestock producers to consider. This Extension Circular review many aspects of grazing residues from nutrient content of residue, supplementation strategies based on desired performance, calculating stocking rates, and strategies to manage around founder. Allowing cattle to harvest their needs is a management strategy to reduce feed costs. Know what your expectations are for your operation, your cattle, and your crops.

Ec08-158 Integrating Management Objectives And Grazing Strategies On Semi-Arid Rangeland, Patrick E. Reece, Jerry D. Volesky, Walter H. Schacht

University of Nebraska-Lincoln Extension: Historical Materials

Extension Circular 08-158 discusses integrating management objectives and grazing strategies on semi-arid rangeland.

2008 Nebraska Business

College of Business: Trade Publications

2008 Nebraska Business

Comparison Of The 2008 Farm Bill Conference Agreement With The House And Senate Farm Bills, Renée Johnson, Geoffrey S. Becker, Tom Capehart, Ralph M. Chite, Tadlock Cowan, Ross W. Gorte, Charles E. Hanrahan, Remy Jurenas, Jim Monke, Jean M. Rawson, Randy Schnepf, Joe Richardson, Donald J. Marples, Mark Jickling

Congressional Research Service Reports

In late May, both the House and the Senate voted to override a presidential veto of the conference agreement on the 2008 farm bill (H.R. 2419, the Food, Conservation, and Energy Act of 2008), and the conference bill became law on May 22, 2008 (P.L. 110-234). However, an enrolling error resulted in one title of the bill (Title III, Trade) being omitted from the version that was sent to the White House, and the newly enacted law contains 14 of 15 farm bill titles. To resolve this issue, both the House and Senate passed a version of the 2008 farm …

Citizen Science: A Best Practices Manual And How It Can Be Applied, Susan Sachs, Paul E. Super, Michelle Prysby

United States National Park Service: Publications

These examples are all forms of “citizen science” happening at environmental education centers, National Park research learning centers, nature centers, and other non-formal education institutions. Citizen science is a research and education tool that involves everyday people in real and meaningful forms of science, including biological inventory, long-term monitoring, and investigative research. All of these examples demonstrate ways that these institutions are using citizen science as a tool for furthering their missions of educating the public about the environment, teaching people about the process of science, and connecting people to the natural world. They also demonstrate ways that citizens are …

Chapter 2: Use Of Distillers Co-Products In Diets Fed To Beef Cattle, Terry J. Klopfenstein, Galen E. Erickson, Virgil R. Bremer

Department of Animal Science: Faculty Publications

Consumers in the United States purchase 64 pounds of beef per year. That beef is considered “high quality” by international standards. In the distant past in the United States, beef was produced with forages, and it still is in most countries of the world today. Beef cattle are ruminants and therefore are able to convert grasses, hays, and crop residues into tasty, nutritious meat. Even today in the United States, about 80% to 90% of the feed required to produce “grain-fed” beef is forage. The U.S. beef produced today is “high quality” because the cattle are fed corn just prior …

Effects Of Prebreeding Body Weight Or Progestin Exposure Before Breeding On Beef Heifer Performance Through The Second Breeding Season, J. L. Martin, K. W. Creighton, Jacqueline A. Musgrave, Terry J. Klopfenstein, R. T. Clark, Don C. Adams, Richard N. Funston

Department of Animal Science: Faculty Publications

Two experiments evaluated prebreeding target BW or progestin exposure for heifers developed lighter than traditional recommendations. Experiment 1 evaluated the effects of the system on heifer performance through subsequent calving and rebreeding over 3 yr. Heifers (229 kg) were assigned randomly to be developed to 55% of mature BW (299 kg) before a 45-d breeding season (intensive, INT; n = 119) or 50% of mature BW (272 kg) before a 60-d breeding season (relaxed, RLX; n = 142). Prebreeding and pregnancy diagnosis BW were greater (P ≤ 0.006) for INT than RLX heifers. Overall pregnancy rate did not differ (88.4%; …