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Review Of Plant Breeding: The Arnel R. Hallauer International Symposium., Jianming Yu

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

This book is a compilation of papers presented at The Arnel R. Hallauer international Symposium on Plant Breeding in Mexico City on August 17-22, 2003. As the title indicates, the symposium was held to honor Dr. Arnel Hallauer, a great plant breeder, scientist, and teacher. The book discusses the past and present status of plant breeding worldwide and presents various perspectives about the future of this life-altering discipline. In 27 chapters, it documents the history, accomplishments, and challenges of plant breeding as a discipline as well as its methods in many different crop species.

Prairie Sandreed Response To Preceding-Year Defoliation And Precipitation Regime, Patrick E. Reece, Justin W. Morris, Walter H. Schacht, Ann E. Koehler, Jerry D. Vole Sky, Lowell E. Moser

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

Knowledge of how current-year grazing and drought stress affect subsequent-year herbage production is needed to enhance the management of semiarid Sandhills prairies. This study quantifies subsequent- year effects of defoliation and precipitation on prairie sandreed (Calamovilfa longijolia), a high-seral, warm-season tallgrass, and total graminoid herbage production in the Nebraska Sandhills. Mainplots (9.0 m2) received either ambient precipitation (noncovered) or precipitation was excluded during April-May, June-July, or August-September, resulting in 66% to 135% of the long-term average (434 mm) precipitation. All species in 1.0 m2 defoliated subplots were clipped in early July at the stubble height required for 30%, …

The Abcs Of Fractal Thinking In Higher Education, Edward Nuhfer

To Improve the Academy: A Journal of Educational Development

All learning establishes and often stabilizes neural networks in the brain. These carry both cognitive and affective attributes and have fractal form. Fractal networks produce many actions and products that exhibit fractal qualities. Awareness of such qualities provides a unifying key to understanding and applying educational knowledge. It represents a marked shift in perception that differs from thinking customarily employed in considering information as a specialist. This alternate perspective helps professionals in higher education draw on diverse information from specialty research and apply it more effectively.

African American Female College And University Presidents: Experiences And Perceptions Of Barriers To The Presidency, Sandra Jackson, Sandra Harris

Journal of Women in Educational Leadership

This study was an investigation of the experiences and perceptions of barriers to the presidency of 43 African American female college and university presidents. Findings suggested that exclusion from informal networks, lack of preparation and lack of career goals were primary barriers. Strategies to overcome these barriers included exceeding job expectations, being visible and developing leadership skills. Mentoring was also suggested as a way to overcome barriers.

Comparative Nitrogen Uptake And Distribution In Corn And Velvetleaf (Abutilon Theophrasti), John L. Lindquist, Darren C. Barker, Stevan Z. Knezevic, Alexander R. Martin, Daniel T. Walters

Department of Agronomy and Horticulture: Faculty Publications

Weeds compete with crops for light, soil water, and nutrients. Nitrogen (N) is the primary limiting soil nutrient. Forecasting the effects of N on growth, development, and interplant competition requires accurate prediction of N uptake and distribution within plants. Field studies were conducted in 1999 and 2000 to determine the effects of variable N addition on monoculture corn and velvetleaf N uptake, the relationship between plant N concentration ([N]) and total biomass, the fraction of N partitioned to leaves, and predicted N uptake and leaf N content. Cumulative N uptake of both species was generally greater in 2000 than in …

Animal Science Newsletter, Winter 2007

Department of Animal Science: Departmental News

Contents:

From The Interim Department Head’s Desk
Bovine 3D Project Readies High-Tech Carcass for Classroom, Industry
Spangler is New Faculty Member
Emeriti News
FIPSE Program Offers International Ag Discussion
Van Vleck Retires
University of Nebraska–Lincoln Poultry Scholarships
Recent Awards and Recognitions
Block and Bridle Club
Animal Science Graduate Student Association
Ambassadors Help Make a Difference
Livestock Judging Team
Horse Judging Team
Equestrian Team
Bobby Moser Thankful for his Decision to Attend UNL
Drive Through Nebraska as a Teen led Burnell to UNL
Former Graduate Student Jerry Reeves Retires
Karlis Ulmanis — From Alum to Prime Minister
Walking Down Memory Lane …

Conducting Cross-Cultural Research In Teams And The Search For The “Culture-Proof” Variable, Patricia Draper

Department of Anthropology: Faculty Publications

Objective: Cross-cultural research must always deal with the problem that meaning systems and behaviors cannot be readily compared from one culture to the next because the sociocultural context can vary so widely.
Design: The organizers of Project AGE: Age, Generation, and Experience, a multicultural study of aging, recognized this problem and devised instruments for studying age that allowed for cultural variation as well as comparability at higher levels of abstraction. The principal investigators of Project AGE and the individual researchers made every effort to gain an emic understanding (understanding based on categories recognized by the local respondents) of people’s attitudes …

Effects Of Dried Distillers Grains And Equivalent Undegradable Intake Protein Or Ether Extract On Performance And Forage Intake Of Heifers Grazing Smooth Bromegrass Pastures, J. C. Macdonald, Terry J. Klopfenstein, Galen E. Erickson, W. A. Griffin

Department of Animal Science: Faculty Publications

Crossbred heifers (n = 120; BW = 368 kg, SD = 39 kg) were used to determine effects of dried distillers grains (DDG) and relative contributions of undegradable intake protein (UIP) and fat (ether extract, EE) in DDG on ADG and forage intake (FI). Heifers rotationally grazed six 3.5-ha, smooth bromegrass paddocks (IVDMD = 65.7%, CP = 20.8%, UIP = 2.17%, DM basis). Heifers were blocked by previous ADG and allotted to treatments in a 3 × 3 + 1 factorial design. Factors were source and level of supplementation. Supplements were as follows: 1) DDG (UIP = 15.8%, EE = …

Effect Of Lactobacillus Acidophilus Strain N P51 On Escherichia Coli 0157:H7 Fecal Shedding And Finishing Performance In Beef Feedlot Cattle, R. Peterson, Terry J. Klopfenstein, Galen E. Erickson, J. Folmer, S. Hinkley, Rodney A. Moxley, David R. Smith

Department of Animal Science: Faculty Publications

A 2-year study was conducted during the summer months (May to September) to test the effectiveness of feeding Lactobacillus acidophilus strain NP51 on the proportion of cattle shedding Escherichia coli 0157:H7 in the feces and evaluate the effect of the treatment on finishing performance. Steers (n = 448) were assigned randomly to pens, and pens of cattle were assigned randomly to NP5 1 supplementation or no supplementation (control). NP5 1 products were mixed with water and applied as the feed was mixed daily in treatment-designated trucks at the rate of l0⁹ CFU per steer. Fecal samples were collected (n …

Efficacy Of Dose Regimen And Observation Of Herd Immunity From A Vaccine Against Escherichia Coli 01 57:H7 For Feedlot Cattle, R. E. Peterson, Terry Klopfenstein, Rodney A. Moxley, Galen E. Erickson, S. Hinkley, D. Rogan, David R. Smith

Department of Animal Science: Faculty Publications

A clinical trial was conducted to test the effect of a vaccine product containing type I11 secreted proteins of Escherichia coli 0157:H7 on the probability that feedlot steers shed E. coli 0157:H7 in feces. Six hundred eight same-source steers were utilized. Of these, 480 steers were assigned randomly to 60 pens (eight head per pen) and to one of four vaccination treatments (120 cattle per treatment, two head per treatment per pen). The four treatments were (i) no vaccination; (ii) one dose, vaccinated once at reimplant (day 42); (iii) two doses, vaccinated on arrival (day 0) and again at reimplant …

Comparison Of Performance And Economics Of A Long-Yearling And Calf-Fed System, W. A. Griffin, T. J. Klopfenstein, G. E. Erickson, D. M. Feuz, James C. Macdonald, D. J. Jordon

Department of Animal Science: Faculty Publications

Performance and economics of calf feeding and feeding long-yearlings was compared from University of Nebraska research conducted from 1996 to 2004. All calves in these studies were spring born and purchased the subsequent fall. The heaviest calves (292 ± 5 kg) were placed into the feedlot and fed an average of 168 d (calf-feds), whereas the lighter calves (239 ± 5 kg) were placed into a long-yearling system consisting of corn residue grazing followed by summer grazing before entering the feedlot for finishing. Long-yearlings were fed in the feedlot for an average of 90 d. At the beginning of the …

Traditional Practices And Exposure To Bodily Fluids In Lusaka, Zambia, Janet M. Wojcicki, Chipepo Kankasa, Charles Mitchell, Charles Wood

Papers in Virology

Objectives To ascertain if there are specific sociocultural and behavioral practices associated with the exposure to saliva, semen and vaginal fluids, particularly through child-rearing practices and the use of traditional medicine in Lusaka, Zambia. Methods We conducted 11 focus group discussions with men and women from diverse ethnic and socioeconomic backgrounds (n = 105) in Lusaka, Zambia in March 2004. We also conducted a brief sociodemographic survey of all focus group participants. Results Discussions indicated that saliva was used while engaging in home health care practices associated with childcare and the use of traditional medicine. Additionally, semen and vaginal …

Peer Review Of Teaching Project: Overview Newsletter, Paul Savory, Amy M. Goodburn, Amy Nelson Burnett

Department of Industrial and Management Systems Engineering: Reports

The Peer Review of Teaching Project (PRTP) is a UNL campus program that supports teams of faculty in making visible the serious intellectual work of teaching. Begun in 1994, the project uses the same process one would use to explore a research question by having faculty inquire, analyze, and document their teaching practices and the resulting student learning and then make these results accessible for use, review, and assessment by one’s peers. The project consists of a first-year fellowship program and an advanced scholar program. Specific faculty outcomes from participating in the project include: (1) Reflecting upon, developing, and writing …

2006-2007 Annual Report

Lancaster County, Nebraska Extension: Reports

Know how. Know now.
“At Work for Nebraska” in Lancaster County
Plant and Pest Diagnostic Services
Extension Helps You Put Knowledge to Work
Pests & Wildlife
Yard & Garden
Nutrition & Food Safety
Home & Family Living
Farms & Acreages
Biosolids Program
From NU to You
Web Site is Instant Way to “Know How. Know Now.”
UNL Classes Work with Panama to Plan Community Center
Honors, Awards and Accomplishments
Lancaster Extension Education Center Conference Facilities
4-H Reached 18,500 Youth in Lancaster County
Volunteers Contribute to Extension’s Success
Family & Community Education (FCE) Clubs

2007 Nebraska Beef Cattle Report Summaries, Dennis R. Brink

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide briefly summarizes recent beef research reported on in the 2007 Beef Cattle Report.

Ec07-148 Grassland Management With Prescribed Fire, James Stubbendieck, Jerry Volesky, John Ortman

University of Nebraska-Lincoln Extension: Historical Materials

Extension Circular 07-148 discusses grassland management with prescribed fire.

Boletín De Grupo De Especialistas En Crácidos 23-28 (2007-2009), Iucn, Birdlife International, Cracid Specialist Group

Galliformes Specialist Group and Affiliated Societies: Newsletters

Volume 23 (Spring 2007)

Registros de anidamiento del pavo de cacho (Oreophasis derbianus) en el Volcan Atitlán, Guatemala, Knut Eisermann, Andy Burge, y Gerardo López

Registros de ninhos de Oreophasis derbianus no Vulcão Atitlan, Guatemala, Knut Eisermann, Andy Burge, e Gerardo López

Nesting records of horned guan (Oreophasis derbianus) on Atitlán Volcano, Guatemala, Knut Eisermann, Andy Burge, and Gerardo López

El redescubrimiento de la chachalaca de la Isla Utila (Ortalis vetula deschauenseei), Sheri L. Glowinski

Redescoberta do aracuã da Ilha Utila (Ortalis vetula deschauenseei), Sheri L. Glowinski

Rediscovery of the Utila Island …

Utilization Of Corn Co-Products In The Beef Industry: Feeding Of Corn Milling Co-Products To Beef Cattle, Galen E. Erickson, Virgil R. Bremer, Terry J. Klopfenstein, Leslie Aaron Stalker, Richard J. Rasby

Department of Animal Science: Faculty Publications

Corn milling co-products are expected to increase dramatically in supply as the ethanol industry expands. Distillers grains, corn gluten feed, or a combination of both co-products offer many feeding options when included in pasture and feedlot diets. These co-product feeds may effectively improve cattle performance and operation profitability. When these co-products are fed in feedlot diets, adjustments to grain processing method and roughage level may improve cattle performance. Innovative storage methods for wet co-products and the use of dried co-products offer small operations flexibility when utilizing co-products. As new co-products are developed by ethanol plants, they should be evaluated with …

Unsaturated Fatty Acids And Sodium Affect The Liver-Like Off-Flavor In Cooked Beef, B. E. Jenschke, J. M. Hodgen, J. L. Meisinger, A. E. Hamling, D. Moss, M. Lundesjo Ahnstrom, Kent M. Eskridge, Chris R. Calkins

Department of Animal Science: Faculty Publications

Beef knuckles (n = 60) were chosen from a population of 328 knuckles to test a selection procedure and determine the potential causes of liver-like off-flavor. In phase I, 2 independent panelists were allowed to smell the aromas or smell and taste samples of cooked beef to determine the presence or absence of the liver-like off-flavor and off-flavor intensity. The panelists tested knuckles from 5 feedlots, but only identified 29 as having an off-flavor. A kappa statistic was generated to assess the level of agreement of the 2 panelists that indicated the panelists moderately or substantially agreed when judgments were …

Effect Of Increasing Levels Of Corn Bran On Milk Yield And Composition, B. N. Janicek, Paul J. Kononoff, A. M. Gehman, K. Karges, M. L. Gibson

Department of Animal Science: Faculty Publications

Thirty-nine lactating Holstein cows (23 multiparous and 16 primiparous) were randomly assigned to 1 of 3 dietary treatments in a crossover design. Dietary treatments differed by the proportion of corn bran [10, 17.5, and 25% dry matter (DM); designated as low, medium, and high] replacing corn silage and alfalfa. The corn bran coproduct contained 8.2% moisture and 12.9% crude protein, 30.4% neutral detergent fiber (NDF), and 45.0% nonfiber carbohydrate, 9.9% ether extract, and 0.70% P (DM basis). The low treatment consisted of 15.8% NDF from forage (fNDF) and 33.1% total NDF; the medium treatment consisted of 12.9% fNDF and 32.5% …

Effect Of Incremental Urea Supplementation Of A Conventional Corn Silage-Based Diet On Ruminal Ammonia Concentration And Synthesis Of Microbial Protein, S. E. Boucher, R. S. Ordway, N. L. Whitehouse, F. P. Lundy, Paul J. Kononoff, C. G. Schwab

Department of Animal Science: Faculty Publications

One primiparous and 3 multiparous lactating Holstein cows fitted with ruminal and duodenal cannulas were used in a 4 × 4 Latin square design to determine the efficacy of adding urea to a corn silage-based diet on ruminal fermentation and microbial protein synthesis. Dietary treatments were 0, 0.3, 0.6, and 0.9% urea in diet dry matter (DM); urea was manually top dressed and incorporated into the ration. The basal diet contained (DM basis) 52% forage (with 61% of forage provided as corn silage) and 48% concentrate ingredients. The basal diet was formulated to meet National Research Council (NRC, 2001) requirements …

Selection And Dietary Quality Of Beef Cattle Grazing Smooth Bromegrass, Switchgrass, And Big Bluestem, B. H. Kirch, L. E. Moser, S. S. Waller, T. J. Klopfenstein, G. E. Aiken, J. R. Strickland

Department of Animal Science: Faculty Publications

The ability of grazing animals to enhance quality of diet by selection is important in production. The study determined the effects of selection on dietary quality of cattle grazing monocultures of smooth bromegrass (Bromus inermis Leyss; SB), switchgrass (Panicum virgatum L.; SG), and big bluestem (Andropogon gerardii Vitman; BB) as influenced by plant maturity. Three ruminally-fistulated steers (295 kg) strip-grazed SB, SG, and BB at vegetative, elongation, early reproductive, and a regrowth stage of development. Selection was maximized by providing cattle access to 40 kg of DM/d per head. Clipped samples were compared with dietary samples accumulated during 45 min …

Production And Economic Comparisons Of Two Calving Dates For Beef Cows In The Nebraska Sandhills, M. C. Stockton, D. C. Adams, R. K. Wilson, T. J. Klopfenstein, R. T. Clark, G. L. Carriker

Department of Animal Science: Faculty Publications

Calving date for 120 cows in the Nebraska Sandhills was changed from the traditional calving season beginning March 15 (d 75) to one beginning June 15 (d 167) to match increased nutrient needs for lactating cows to immature grazed forages that are high in protein and energy. The hypotheses being tested were that 1) less hay and purchased feeds would be required, 2) production costs would be reduced, and 3) net returns would be greater for June-calving cows compared with their March-calving counterparts. All steer calves from 75 March-calving cows were moved to a feedlot within 60 d of weaning …

Effects Of Distillers Grains Or Corn Supplementation Frequency On Forage Intake And Digestibility, T. W. Loy, J. C. Macdonald, Terry Klopfenstein, Galen E. Erickson

Department of Animal Science: Faculty Publications

Ten ruminally cannulated heifers (BW = 416 kg; SD = 24) were used to test the effect of the form and frequency of supplemental energy on forage DMI and digestibility. Five treatments were arranged in a replicated, 5 × 4 Latin rectangle (n = 8), and included no supplement (control), dry-rolled corn (DRC) fed daily, DRC fed on alternate days (DRC-A), dried distillers grains plus solubles (DDGS) fed daily, and DDGS fed on alternate days (DDGS-A). Supplements fed daily were fed at 0.40% of BW, whereas alternate day-fed supplements were fed at 0.80% of BW every other day. Chopped grass …

Finding Value In Switchgrass Today Through Cattle, John A. Guretzky

Department of Agronomy and Horticulture: Faculty Publications

Switchgrass has future potential in the Southern Plains as a dedicated cellulosic biofuels crop. In the near and intermediate terms, an economically viable use for switchgrass needs to be found. In May 2007, the Noble Foundation Agricultural Division successfully established a 30-acre field of switchgrass at the Red River Demonstration and Research Farm. Beginning in April 2008, we will evaluate the utilization and value of switchgrass for stocker cattle. Switchgrass may have value for stockers because of its early spring availability, high yields, perennial life form, wide adaptability and low fertilization requirements.

Second-year stands of switchgrass become available for grazing …

The Impact Of The Atlantic Slave Trade On West Africa: Polygyny And Female Reproductive Success, Katherine Lamie

Nebraska Anthropologist

J.D. Fage (1969) and Patrick Manning (1981; 1990) examine demographic data from historical records, in the West African political and economic context, in order to formulate theories of the impact of the Atlantic slave trade on West African populations and social structure. However, Fage and Manning come to markedly different conclusions. Fage maintains that the intensification of polygyny in West Africa that accompanied the Atlantic slave trade preserved African populations. In contrast, Manning argues that intensified polygynous marriages on the West African coast decreased the fertility of female slaves, thereby depressing population growth and affecting traditional social structures. Manning later …

Bioprospecting And Biopiracy In Latin America: The Case Of Maca In Perú, Amanda J. Landon

Nebraska Anthropologist

Bioprospecting is a popular venture in Latin America due to the regions' high concentration of the world's biodiversity. This activity has an impact on the native peoples living in areas with potentially profitable plants. They can lose access to traditional plants and extraction processes when companies patent indigenous cultivars and knowledge. In many cases, they cannot patent their cultivars and knowledge before others due to cultural and monetary restrictions. In this paper, I examine the legal and cultural context surrounding the battle over Lepidium meyenii (maca) in Peru. Pure World, Inc., a United States pharmaceutical company, patented the extracts derived …

Dry Weight And Nitrogen Content Of Chickpea And Winter Wheat Grown In Pots For Three Rotations, James E. Bidlack, Charles T. Mackown, Srinivas C. Rao

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

Chickpea [Cicer arietinum (L.)] cultivars ‘ICCV-2’ and ‘Sarah’ were studied along with a control, multistrain, TAL 1148, and TAL 480 Bradyrhizobium strains to determine the effect(s) of cultivar and inoculum on dry weight (DW) and nitrogen (N) content of the legume, as well as soil mineral N, DW, and N content of wheat [Triticum aestivum (L.) emend. Thell.] in a continuous wheat-legume rotation. Chickpeas were planted during the summer and harvested in the fall of 1992, 1993, and 1994. Vegetative growth from chickpeas was incorporated into the soil prior to wheat planting, and soil cores were taken at …

Nebline, January 2007

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

UNL College of Ag and Natural Resources Turns Talents into Rewarding Careers
Crop Protection Clinic, Jan. 22
Glyphosate-Resistant Marestail Confirmed in Nebraska
Upcoming Pesticide Applicator Trainings
Rethinking Shelterbelts
Salt Damage to Plants Determining Houseplant Problems
Girdling Roots on Trees
Winter Strategies for Wildlife
Where Do Insects Go in the Winter?
Lifelong Learning in Nutrition
Make-Ahead Frozen Beef “Crumbles” Recipe
Peanut Butter Banana Shake Recipe
Are You a “Lark” or an “Owl”? Cook Ahead Accordingly!
Play “FOOD” Ball Online!
President’s Notes — Alice’s Analysis
Household Hints
FCE News & Events
Teach Your Children Well
10 Ways to Save with Lighting
Strengthening …

Unit Accomplishments For 2007

Southeast Research and Extension Center: Reports and Administration

Diversified agriculture enterprises and successfully direct market or niche market

Rural Advantage Conference

Kimmel Entrepreneurship programs

Alternative Ag Festivals

Youth

Diversified Ag Tours

SARE

Farm Beginnings Program

Wine Analysis

Irrigation and Energy Conservation Workshop

Irrigation Management Field Day

The Nebraska Agricultural Water Management Demonstration Network (NAWMDN)

Solution Days

Nebraska No-Till Conference

National No-till Conference in Des Moines Iowa

Carbon payments

No Till on the Plains

Farm Management Tools

Golden Triangle Meeting

Eastern Nebraska Cattlemen's Expo

Cow/Calf College

4-State Beef Conference

Onsite Wastewater

Drinking Water

Storm Water

Acreage Expo

Toxic Algae

Sustainable Landscape Demonstration Gardens

The Hospice House Garden

Termite Professional …