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2001 Beef Cattle Report

Nebraska Beef Cattle Reports

Contents

Cow/Calf
A Comparison of Beef Cattle Crossbreeding Systems Assuming Value-Based Marketing
June versus March Calving for the Nebraska Sandhills: Production Traits
June versus March Calving for the Nebraska Sandhills: Economic Comparisons
June versus March Calving for the Nebraska Sandhills: Economic Risk Analysis
Protein Supplements and Performance of Cows and Calves in June-Calving Production Systems
Performance and Economics of Winter Supplementing Pregnant Heifers Based on the Metabolizable Protein System
Forage Intake and Nutrient Balance of Heifers Grazing Sandhills Winter Range
Summer Grazing and Fall Grazing Pressure Effects on Protein Content and Digestibility of Fall Range Diets
Annual Forage Production and …

Composting Of Feedlot And Dairy Manure: Compost Characteristics And Impact On Crop Yields, Galen E. Erickson, Terry J. Klopfenstein, Walker Luedtke, Mark Schroeder, Charles A. Francis, Gary Lesoing

Nebraska Beef Cattle Reports

Since 1993, approximately 17,600 tons of beef feedlot and dairy compost have been spread on 1,100 acres. Crop yields were measured to determine the impact of a one-time compost application by using no-compost check strips in large-scale production fields. Adding compost to irrigated corn, irrigated soybeans, and dryland corn acres significantly increased yields, with four-year average increases of 2.3, 1.5, and 2.7%, respectively. For all crops measured, the response to compost was greatest the first year following application and declined linearly in subsequent years. The increased yield from compost application offsets spreading costs using average prices for crops.

Forage Intake And Nutrient Balance Of Heifers Grazing Sandhills Winter Range, Trey Patterson, Don C. Adams, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

Two experiments with pregnant heifers grazing winter range investigated effects of supplementation to meet metabolizable protein versus CP requirements. Supplements were fed from October to February, and hay was fed in January and February of the second experiment. Supplementation to meet metabolizable protein requirements decreased weight loss in one experiment. Winter hay feeding reduced weight loss and body condition loss compared to no hay feeding. Forage intake declined from 2.1% of body weight in November to 1.3% in February. Metabolizable protein was deficient when animals were supplemented to meet CP requirements. Supplementation to meet metabolizable protein requirements may improve performance …

A Comparison Of Beef Cattle Crossbreeding Systems Assuming Value-Based Marketing, U. Jon Tomsen, D. Kirk Darnell, Merlyn K. Nielsen

Nebraska Beef Cattle Reports

This study simulated total life-cycle expenses and income under value-based marketing to arrive at predicted net returns for crossbreeding systems. The simulation used a deterministic model of totally contained beef breeding systems and evaluated 14 breeds and their crosses from biological data collected at the U.S. Meat Animal Research Center in Nebraska. Comparing beef cattle crossbreeding systems under value-based marketing will aid us in understanding the interactions of the total system. Besides value of carcasses, feed requirements, level of milk production and other characteristics are important in determining net returns.

The National Honors Report, Volume Xxii, Number 2, Summer 2001

The National Honors Report

COVER STORY

"Growing More Than Corn" by Daniel Abben, Lynn Cunningham, Shauna Duffy, Julie Kretzmer, Jason McLaughlin, Mary Beth Pistulka, Katy Rose Resnick, Alexa Spencer & Emily Wolf ... 1 Nine honors students from Clarke College, Dubuque, Iowa in required two-semester honors colloquium create their own website about multiculturalism and diversity in Iowa. With Katherine "Katie" Fischer, instructor. The philosophy and process (and its many zigs and zags) behind it. Website based on students' individual research topics, which include Orthodox Hasidic Jews in Postville, IA; women's role in Catholic church; militia groups; and minorities in honors programs. Presented at the …

The National Honors Report, Volume Xxi, Number 4, Winter 2001: Classics Ii

The National Honors Report

1. "Issues in Honors” by Robert C. Angel… 1 Reprinted from The Superior Student Vol. 3, No.4 (May/June 1960): 18-24. A 1960's presentation which raises concerns faced now, forty years later: admission, enrichment or acceleration, for example. Angell poses questions, makes suggestions based on his experience but always puts forth an alternative point of view for consideration. A thoughtful presentation. For newcomers to honors as well as faculty and directors in established programs.

2. "[T]he ICSS 1959” by Joseph W. Cohen… 6 Reprinted from The Superior Student Vol. 2, No.6 (October 1959): 3-5. From an opening address by one ofthe …

Avian Use Of Various Bait Mixtures Offered In Harvested Cornfields During Spring Migration In South Dakota, George M. Linz, H. Jeffrey Homan, Ryan L. Wimberly

United States Department of Agriculture Wildlife Services: Staff Publications

The avicide, DRC-1339, is used to cull populations of spring-migrating blackbirds in eastern South Dakota to reduce damage to ripening sunflower in late summer. We investigated non-target bird hazards associated with using various grain mixtures to attract blackbirds (Icteridae), especially red-winged blackbirds (Agelaius phoeniceus), to avicide-treated bait broadcast in harvested cornfields. During spring 1997 and 1998, we recorded the species and numbers of birds attracted to 0.2-ha plots baited with cracked corn and brown rice, fine-chipped sunflower meats and brown rice (1997 only), and unsupplemented brown rice. Unbaited plots were used as reference sites. In 1997 and 1998, …

Pathology Of Brucellosis In Bison From Yellowstone National Park, Jack C. Rhyan, Thomas Gidlewski, Thomas J. Roffe, Keith Aune, L. Michael Philo, Darla R. Ewalt

United States Department of Agriculture Wildlife Services: Staff Publications

Between February 1995 and June 1999, specimens from seven aborted bison (Bison bison) fetuses or stillborn calves and their placentas, two additional placentas, three dead neonates, one 2-wk-old calf, and 35 juvenile and adult female bison from Yellowstone National Park (USA) were submitted for bacteriologic and histopathologic examination. One adult animal with a retained placenta had recently aborted. Serum samples from the 35 juvenile and adult bison were tested for Brucella spp. antibodies. Twenty-six bison, including the cow with the retained placenta, were seropositive, one was suspect, and eight were seronegative. Brucella abortus biovar 1 was isolated from …

Darwin's Plots: Evolutionary Narrative In Darwin, George Eliot, And Nineteenth-Century Fiction, Gillian Beer

The George Eliot Review Online, ISSN: 2831-5375

In Darwin s Plots, Gillian Beer writes that 'On the Origin of Species is one of the most extraordinary examples of a work which included more than the maker of it at the time knew, despite all that he did know'. Published in November 1859 with a print run of 1,250, Origin shook Victorian Britain. Its conclusions seemed inescapable. Life on earth was not the six-day product of a divine creator, but the outcome of random evolutionary process. Its impact was immediate and immense. Man 'was born yesterday - he will perish tomorrow' declared the Athenaeum. In later life Thomas …

Doing Faculty Development As If We Value Learning Most: Transformative Guidelines From Research To Practice, Thomas Anthony Angelo

To Improve the Academy: A Journal of Educational Development

If producing high-quality student learning is American higher education’s defining goal, how can faculty development best contribute to its realization? In response to that question, this essay synthesizes theories, findings, and strategies from a variety of literatures into seven transformative ideas which, taken together, have the potential to make our mental models of and approaches to faculty development more effective. It also offers seven guidelines based on these ideas, as well as related, practical strategies for doing faculty development as if student learning matters most.

Higher–Level Learning: The First Step Toward More Significant Learning, L. Dee Fink

To Improve the Academy: A Journal of Educational Development

In order to design significant learning experiences far students, teachers first need to be able to formulate powerful and challenging goals for their courses. This essay describes a taxonomy of higher-level learning that consists of six kinds of learning: foundational knowledge, application, integration, the human dimension, motivation, and learning how to learn. The argument is made that this taxonomy goes beyond the familiar taxonomy of Benjamin Bloom and encompasses a wide range of goals that are currently advocated by many national organizations and scholars in higher education. The taxonomy can be used to design better courses, choose among alternative teaching …

The Role Of A Teaching Center In Curricular Reform, Constance Ewing Cook

To Improve the Academy: A Journal of Educational Development

Instructional consultants can play a crucial role in curricular reform. They gather evaluation and assessment data about the current curriculum so that faculty decisions about improvements are based on empirical evidence. They organize and facilitate meetings and retreats at which faculty make curricular decisions, and they provide pedagogical expertise and resources to help with course design and enhancement. They also provide ongoing data for formative evaluation of the new curriculum. Examples from the University of Michigan’s Center for Research on Learning and Teaching illustrate instructional consultants’ contributions to the curricular reform process.

Technology And The Culture Of Teaching And Learning, Sean Courtney

To Improve the Academy: A Journal of Educational Development

Faculty development professionals in postsecondary institutions face many challenges helping faculty adapt to the new forms of information technology. Chief among them is understanding how technology is forcing us to rethink current classroom practices. To aid this effort, this essay identifies and analyzes six key dimensions of traditional cultures of teaching and learning and attempts to show how technology, particularly computer-mediated forms, is transforming their meaning and potential impact.

Developing New Faculty: An Evolving Program, Gloria Pierce

To Improve the Academy: A Journal of Educational Development

This essay describes the evolution of a program for the development of new faculty at a public teaching university. The year-long process of orienting the newest professors to the campus and assisting them with their scholarship and teaching results in additional (albeit unplanned and unexpected) benefits, such as professional renewal of senior faculty who serve as advisors and enhanced functioning of the university itself. Vital to the program’s success is the productive involvement of key campus constituencies and responsiveness to feedback.

Faculty Quality Of Life, Sally S. Atkins, Kathleen T. Brinko, Jeffrey A. Butts, Charles S. Claxton, Glenda T. Hubbard

To Improve the Academy: A Journal of Educational Development

An interdisciplinary research team conducted a formal assessment of campus culture and faculty quality of life at Appalachian State University. Interviews with a stratified random sample of full-time, tenure-track faculty revealed five themes: 1) the importance of human relationships, 2) the deep commitment of faculty to student learning, 3)general satisfaction with academic life, 4) the personal sacrifice of faculty members for their work, and 5) perceptions of incongruence between institutional rhetoric and action. Recommendations are offered for readers to apply to their own universities to help faculty, staff, students, and administrators work together toward becoming an institution that is a …

Efficiency And Conservatism, Christopher T. Wonnell

Nebraska Law Review

The concept of "efficiency" plays a central role in law and economics. Yet despite its centrality, some basic questions about the nature of this efficiency idea remain obscure. The argument of this article can be briefly stated. In Section I, it is argued that we need an efficiency norm to capture the fundamental idea of avoiding waste, or a sacrifice of one good thing that is not a necessary loss in the pursuit of another good thing. An anti-waste ideal is made important more by a plurality of plausible conceptions of distributive justice than by worries about the impracticability of …

A Simple Performance-Based Index For Assessing Multiple Agroecosystem Functions, Mark A. Liebig, Gary E. Varvel, John W. Doran

Department of Agronomy and Horticulture: Faculty Publications

Evaluating the impact agricultural practices have on agroecosystem functions is essential to determine the sustainability of management systems. This paper presents an approach to determine the relative sustainability of agricultural practices. A simple ranking procedure using a relative scoring method is proposed to discriminate among treatments based on the status of crop and soil parameters within different agroecosystem functions. Summing scores across agroecosystem functions allows for the identification of agricultural practices that are performing optimally based on functions included in the procedure. An example, using data from a long-term cropping systems experiment in the western Corn Belt, found the indexing …

Estimating Forage Protein Degradation In The Rumen, Terry J. Klopfenstein, R. A. Mass, K. W. Creighton, H. H. Patterson

Department of Animal Science: Faculty Publications

Forage proteins are degraded rapidly by rumen microorganisms and therefore supply relatively small quantities of undegraded intake protein (UIP). Growing cattle with high metabolizable protein requirements and lactating beef and dairy cows respond to UIP supplementation when fed high-forage diets, even though degradable intake protein (DIP) is adequate. This observation suggests that an accurate estimate of forage UIP is needed to establish optimal supplementation conditions. Microbial protein must be quantitated in duodenal or in situ residue samples to accurately measure forage UIP. Purines commonly are used as a microbial protein marker. Recent reports suggested that the original purine procedure generates …

Origin And Conservation Genetics Of Threatened Ute Ladies’-Tresses, Spiranthes Diluvialis (Orchidaceae), Allen L. Szalanski, Gerry Steinauer, Richard Bischof, Jessica Lynn Petersen

Department of Animal Science: Faculty Publications

The Ute ladies’-tresses, Spiranthes diluvialis, is listed as a threatened orchid in west-central United States by the Federal government. Information on its origin and patterns of genetic variation is needed to develop effective conservation strategies for this species. DNA sequencing and polymerase chain reaction–restriction fragment length polymorphism (PCR-RFLP) was used to evaluate genetic variation and structure of 23 populations of S. diluvialis. In addition, four congeneric species were analyzed to determine possible origins of the putative allotetraploid S. diluvialis. DNA sequencing and PCR-RFLP analysis of the nuclear ribosomal internal transcribed spacer (ITS) and mitochondrial and chloroplast DNA …

Summer Grazing And Fall Grazing Pressure Effects On Protein Content And Digestibility Of Fall Range Diets, Trey Patterson, Terry J. Klopfenstein, Don C. Adams, Walter H. Schacht, Patrick E. Reece, Jacqueline A. Musgrave, Amy Herron

Nebraska Beef Cattle Reports

In 1997 and in 1998, four blocks of Sandhills range were used to examine summer grazing time and fall grazing pressure effects on fall diet quality. Three pastures within each block were grazed in June, July, or deferred from summer grazing each year. Multiple grazing pressures were created by grazing cows at various stocking rates in the fall. Diets were collected by esophageally fistulated cows. In 1997, diet protein and digestibility declined with increasing grazing pressure. In 1998, there were no effects of grazing pressure on fall diet protein or digestibility. July grazing reduced fall diet protein compared to June …

Use Of Sire Referencing Schemes To Select For Improved Carcass Composition In Sheep, G. Simm, R. M. Lewis, J. E. Collins, G. J. Nieuwhof

Department of Animal Science: Faculty Publications

Objective genetic improvement in specialized meat breeds of sheep in Britain is based largely on the performance recording and genetic evaluation service provided by Signet and the Meat and Livestock Commission. This includes the use of ultrasonic scanning and a selection index to identify animals with high genetic merit for lean growth. More than 20 sire referencing schemes (SRS) have been established in Britain during the last 12 yr. About half of the performance- recorded flocks in Britain now belong to SRS. Sire referencing schemes create genetic links between flocks and years through the shared use of elite rams (reference …

The Evolution Of Virtual Ecology, Alan Kamil, Alan B. Bond

Alan Bond Publications

The relationship between the perceptual and cognitive abilities of predatory birds and the appearance of their insect prey has long been of intense interest to evolutionary biologists. One classic example is crypsis, the correspondence between the appearance of prey species and of the substrates on which they rest which has long been considered a prime illustration of effects of natural selection, in this case operating against individuals that were more readily detected by predators (Poulton 1890; Wallace 1891). But the influences of predator psychology are broader, more complex, and more subtle than just pattern matching. Many cryptic prey, including the …

Sensory Biology Of Whip Spiders (Arachnida, Amblypygi), Ranier Foelix, Eileen Hebets

Eileen Hebets Publications

Whip spiders belong to a small arachnid order (Amblypygi) that is not well known. Their most conspicuous feature are the elongated, extremely thin front legs (“whips”, or antenniform legs). These are no longer used for walking but are modified extremities carrying various sense organs – very much like the antennae of insects. Whereas hundreds of olfactory hairs are concentrated near the tip of each antenniform leg, large bristles (contact chemo-receptors) are evenly distributed over the entire antenniform leg. The sensory hairs of each antenniform leg contribute about 30,000 small sensory axons which proceed toward the Central Nervous System (CNS). The …

Genetic Consequences Of Polygyny And Social Structure In An Indian Fruit Bat, Cynopterus Sphinx. Ii. Variance In Male Mating Success And Effective Population Size, Jay F. Storz, Hari Bhat, Thomas H. Kunz

Jay F. Storz Publications

Variance in reproductive success is a primary determinant of genetically effective population size (N_e), and thus has important implications for the role of genetic drift in the evolutionary dynamics of animal taxa characterized by polygynous mating systems. Here we report the results of a study designed to test the hypothesis that polygynous mating results in significantly reduced N_e in an age-structured population. This hypothesis was tested in a natural population of a harem-forming fruit bat, Cynopterus sphinx (Chiroptera: Pteropodidae), in western India. The influence of the mating system on the ratio of variance N_e to adult …

Ec01-798 Residential On-Site Wastewater Treatment: An Overview, Janet R. Hygnstrom, Wayne Woldt, Sharon Skipton

University of Nebraska-Lincoln Extension: Historical Materials

This publication will answer many questions that homeowners or potential homeowners, realtors and lenders may have about residential on-site wastewater treatment systems. Information is based on Title 124: Rules and Regulations for the Design, Operation and Maintenance of On-site WastewaterTreatment Systems of the Nebraska Department of Environmental Quality (NDEQ), which requires that a dwelling or establishment that generates wastewater have an on-site wastewater treatment system in accordance with those regulations, or be connected to a public wastewater treatment system. An establishment is a house, building, structure, or place that generates more than 1,000 gallons of wastewater per day, generates non-domestic …

"Vertebrate Pests Of Agriculture, Forestry And Public Lands" 2001 Annual Meeting

Western Region Coordinating Committee for Vertebrate Pests of Agriculture, Forestry, and Public Lands (WCC-95)

Table of Contents

2001 Officers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Minutes ................................................................ 2

Number and Title of the Regional Project ................................ 2

Location and Dates of the Meeting ................................... 2

Participants ................ , . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . …

Rearing And Releasing Galerucella Beetles To Control Purple Loosestrife, Stevan Z. Kenzevic, Doug Smith

University of Nebraska-Lincoln Extension: Historical Materials

Purple loosestrife is a noxious weed quickly invading Nebraska's wetlands. This publication describes the rearing and releasing of insects for biological control of the weed, as one part of an integrated management program. Purple loosestrife is a noxious perennial weed invading thousands of acres of wetlands and waterways in the Midwest. In Nebraska an estimated 18,000 acres are already infested by this plant, mostly along the main rivers and waterways. It has no natural enemies in North America, therefore it is very hard to prevent it from spreading. For years people have tried to eradicate it, especially in the Great …

Ec01-146 Nebraska Soybean Field Guide, Alex Martin

University of Nebraska-Lincoln Extension: Historical Materials

EC 01-146-D: This circular is a pocket guide to the planting of soybeans in Nebraska. The field guide provides much information over soybeans and how they are grown within the state. Though the sections are brief, it provides a vast quantity of information from planting practices to soybean fertility and different diseases and insects which can affect the crop.

Boletín De El Iucn/Birdlife/Wpa Grupo De Especialistas En Crácidos 12-16 (2001-2003), Iucn, Birdlife International, Wpa Cracid Specialist Group

Galliformes Specialist Group and Affiliated Societies: Newsletters

Volume 12 (March 2001)

Recientes registros de crácidos de Tikal, Petén, Guatemala, con notas sobre su conservacion, Thomas M. Donegan

Recent records of cracids from Tikal, Petèn, Guatemala, with notes on their conservation, Thomas M. Donegan

El muitú (Crax fasciolata) como emblema de una actividad de ecoturismo en el norte Argentino, Emilio E. White

O mutum-penacho (Crax fasciolata) como símbolo de uma atividade de ecoturismo no norte da Argentina, Emilio E. White

The bare-faced curassow (Crax fasciolata) as an emblem of ecotourism activity in northern Argentina, Emilio E. White

Grants, Research opportunities, Interested in signing up? …

Crop Watch No. 2001-10, May 18, 2001, Lisa Brown Jasa

Crop Watch (1994–2005)

Field Updates..........88

West Central Open House..........88

Glyphosates Compared..........90

New Herbicides; Label Changes..........92

Alfalfa Weevil Activity..........92

Precipitation Update..........93

Diagnostic Clinic..........94

Tips For Sampling..........94