Digital Commons Network^™

Effect Of Dietary Concentration Of Metabolizable Lysine On Finishing Cattle Performance, M. J. Klemesrud, Terry J. Klopfenstein, Rick Stock, Austin Lewis, D. W. Herold

Department of Animal Science: Faculty Publications

A finishing trial and a metabolism trial were conducted to determine the effect of supplemental metabolizable Lys level on finishing calf performance and to estimate the metabolizable Lys requirement of finishing calves. The finishing trial included 60 individually fed crossbred beef steer calves (237 kg; SD = 20 kg) supplemented with either incremental amounts of rumen-protected Lys and Met, or Met alone. Addition of Lys and Met improved gains and efficiencies (quadratic; P < .02) during the first 56 d. There was no response to supplemental Met alone, suggesting that supplemental Lys rather than Met was responsible for the improvement in performance. Using nonlinear analyses to compare gain relative to supplemental Lys intake, maximum gain was determined to be 2.10 kg/ d, or .27 kg/d above the zero Lys control, at a supplemental Lys intake of 2.56 g/d. Steers supplemented with 3 and 4 g of Lys had a weight advantage over the control steers of 16 kg at 56 d and 32 kg at the end of the 161- d trial. However, there were no statistical responses to Lys or Met during any periods after 56 d. During a separate metabolism trial, four steers fed the control finishing diet were slaughtered, and abomasal contents were collected for amino acid analyses. The predicted (Level 1 NRC, 1996) metabolizable protein flow to the abomasum for the control diet was 715 g/d, and the predicted Lys flow was 37.9 g/d. A supplemental Lys intake of 2.56 g/d would increase the Lys flow to 40.5 g/d. Feedlot diets low in ruminal escape protein may be deficient in metabolizable Lys, especially early in the feeding period. The metabolizable Lys requirement of steer calves gaining 2.10 kg/d is estimated to be 40.5 g/d.

Geometric Rule Learning By Clark’S Nutcrackers (Nucifraga Columbiana), Alan Kamil, Juli E. Jones

Papers in Behavior in Biological Sciences

Clark’s nutcrackers (Nucifraga columbiana) were trained to search in a location defined by its geometric relationship to 2 landmarks. Two groups were trained to search at different points along the line connecting the landmarks, and 2 groups were trained to find the 3rd point of a triangle, on the basis of either direction or distance from the landmarks. All groups learned and transferred to new interlandmark distances. However, the constant-distance group learned more slowly, searched less accurately, and showed less transfer than the other 3 groups. When tested with new orientations of the landmarks, the birds tended to …

Role Of Neurotropins In Rat Embryonic Testis Morphogenesis (Cord Formation), Elena Levine, Andrea S. Cupp, Michael K. Skinner

Department of Animal Science: Faculty Publications

The process of seminiferous cord formation is the first morphological event that differentiates a testis from an ovary and indicates male sex determination. Cord formation occurs by embryonic Day 14 (Day 0 5 plug date; E14) in the rat. A series of experiments were conducted to determine if neurotropins and their receptors are important for the process of rat embryonic cord formation. The expression of low affinity neurotropin receptor (p75/LNGFR) was determined by immunohistochemistry on sections of both testis and ovary from E13 through birth (Day 0, P0) with an antibody to p75/LNGFR. The staining for p75/ LNGFR was present …

Standing At The Edge Of A New Millennium: Ending A Decade Of Erosion Of The Citizen Suit Provision Of The Clean Water Act, Emily A. Berger

Maryland Law Review

No abstract provided.

Leg Ornamentation And The Efficacy Of Courtship Display In Four Species Of Wolf Spider (Araneae: Lycosidae), Eileen Hebets, George W. Uetz

Eileen Hebets Publications

This study used both correlative and experimental video playback methods to test the hypothesis that the secondary sexual traits of male wolf spiders act to increase the efficacy of visual courtship displays. Direct observations of courtship of several lycosid genera and a review of the literature revealed a significant association between ornamentation and visual courtship displays. This suggests that the ornamentation may be playing the role of amplifier for a visual display. To test this hypothesis, male courtship behaviors of four Schizocosa species were experimentally manipulated using video-imaging techniques. Females of species with non-visually displaying, non-ornamented males (Schizocosa duplex …

G00-1778 Field Windbreaks, James R. Brandle, Laurie Hodges

University of Nebraska-Lincoln Extension: Historical Materials

gricultural producers face many challenges as they try to balance efficient production systems with increasing environmental demands. For these systems to be successful, they must optimize the balance between inputs and final production. Field windbreaks are one way to increase yields while at the same time reducing inputs and improving both environmental quality and production efficiency. Windbreaks reduce wind speed and alter the microclimate in sheltered areas. Field windbreaks reduce wind erosion and the damage to crops caused by wind-blown soil. They improve water use efficiency, reduce risks associated with drought, and manage blowing snow.

Field windbreaks provide positive economic …

Mp00-75 The 2000-2001 Nebraska Poultry Report, Mary M. Beck, Mindy M. Brashears, Necmettin Ceylan, Shelly R. Mckee, Lisa Nolan, Sheila Scheideler, Eva Wallner-Pendleton, Kimberly K. Franzen, Uaichai Puthpongsiriporn, Mohammad A. Jalal, Jodi Ash, Elizabeth Marsh, Haitham Yakout, Curtis Novak, D.J. Jordan, Ryan Mass, Ramiro Lucena, Mohammed Alomad, Samar Elnagar, Jennifer Bridger, Marcos X. Sanchez, Wade M. Fluckey

University of Nebraska-Lincoln Extension: Historical Materials

The Nebraska Poultry Report is produced every two years by the Animal Science Department's poultry faculty with contributions from others in the University of Nebraska who work with avian species. The purpose of the report is to make our activities known to the poultry industries in Nebraska. The majority of articles are based on on-going research but are written in a relaxed style for ease of reading.

Focus Emu, September 19, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, September 26, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, September 5, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, October 3, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, May 9, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, March 28, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, March 21, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, June 13, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, January 25, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, July 11, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, January 11, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, October 24, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, December 12, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, August 8, 2000, Office Of Public Information

Focus EMU

No abstract provided.

Quantitative Image Analysis Of Simian Immunodeficiency Virus Replication In Macrophages Coinfected With Mycobacterium Avium Complex, Qingsheng Li, Keith G. Mansfield, Andrew Lackner, Ashley T. Haase

Qingsheng Li Publications

Mycobacterium avium is the most frequent cause of disseminated bacterial infection in patients with human immunodeficiency virus type 1 infection and in rhesus macaques with simian immunodeficiency virus (SIV) infection. This animal model of AIDS was used to test the hypothesis that this frequent association is the result of reciprocal enhancement of replication of both microorganisms. The replication of M. avium and SIV was analyzed in lymphatic tissues obtained from rhesus macaques experimentally inoculated with SIVmac who developed or remained free of overt M. avium infection. In situ hybridization, quantitative image analysis, and staining of M. avium and of macrophages …

Winter Ceremonial Script, December 17, 2000, Eastern Michigan University

Commencement Programs and Materials

No abstract provided.

Spring Commencement, April 30, 2000, Eastern Michigan University

Commencement Programs and Materials

No abstract provided.

Eastern Michigan University Class Schedule - Summer 2000, Office Of The Registrar

Class Schedules Collection

No abstract provided.

Eastern Michigan University Class Schedule - Spring 2000, Office Of The Registrar

Class Schedules Collection

No abstract provided.

Eastern Michigan University Class Schedule - Fall 2000, Office Of The Registrar

Class Schedules Collection

No abstract provided.

Eastern Michigan University Class Schedule - Winter 2000, Office Of The Registrar

Class Schedules Collection

No abstract provided.

Board Of Regents Meeting Materials, March 21, 2000, Eastern Michigan University

Board of Regents Meeting Materials

No abstract provided.

Board Of Regents Meeting Materials, June 20, 2000, Eastern Michigan University

Board of Regents Meeting Materials

No abstract provided.