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2018

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Elucidation Of The Mechanism Of Beta-2 Adrenergic Receptor Agonist-Mediated Mitochondrial Biogenesis, Robert Bruce Cameron Jan 2018

Elucidation Of The Mechanism Of Beta-2 Adrenergic Receptor Agonist-Mediated Mitochondrial Biogenesis, Robert Bruce Cameron

MUSC Theses and Dissertations

Acute kidney injury (AKI) is the transient loss of renal function following an insult. Despite high incidence and mortality, therapy for AKI is limited to supportive care and renal replacement therapy. The induction of mitochondrial biogenesis (MB) accelerates recovery of renal function in animal models of AKI. We have identified that the beta-2 adrenergic receptor (β2AR) agonist formoterol induces MB in renal proximal tubule cells (RPTC); however, not all β2AR agonists induce MB. We hypothesized that formoterol activates a distinct signaling pathway in RPTC to induce MB and accelerate recovery of renal function. In cultured RPTC, we found that formoterol …

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Prelimbic Cortical Synaptic And Structural Plasticity Following Cocaine Self-Administration And Abstinence In Rats: Role Of Glutamatergic Pathway Specificity, Benjamin Michael Siemsen Jan 2018

Prelimbic Cortical Synaptic And Structural Plasticity Following Cocaine Self-Administration And Abstinence In Rats: Role Of Glutamatergic Pathway Specificity, Benjamin Michael Siemsen

MUSC Theses and Dissertations

The primary goal of this dissertation is to further examine the role of the prelimbic (PrL) subdivision of the rodent medial prefrontal cortex in relapse to cocaine seeking following abstinence, and to extend our understanding of pathway-specific adaptations in the PrL cortex projection to the nucleus accumbens (NAc) core that drives relapse. Previous findings indicate that the PrL cortex shows a biphasic response to abstinence from cocaine exposure. Specifically, early withdrawal (two hours after the final self-administration session) results in dephosphorylation of glutamate NMDA receptors and glutamate signaling regulators including extracellular signal-regulated kinase and the downstream transcription factor cAMP response-element …

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Development Of A Targeted Smoking Relapse-Prevention Intervention For Cancer Patients, Lauren R. Meltzer, Cathy D. Meade, Diana B. Diaz, Monica S. Carrington, Thomas H. Brandon, Paul B. Jacobsen, Judith C. Mccaffrey, Eric B. Haura, Vani N. Simmons Jan 2018

Development Of A Targeted Smoking Relapse-Prevention Intervention For Cancer Patients, Lauren R. Meltzer, Cathy D. Meade, Diana B. Diaz, Monica S. Carrington, Thomas H. Brandon, Paul B. Jacobsen, Judith C. Mccaffrey, Eric B. Haura, Vani N. Simmons

Nursing Faculty Publications

We describe the series of iterative steps used to develop a smoking relapse-prevention intervention customized to the needs of cancer patients. Informed by relevant literature and a series of preliminary studies, an educational tool (DVD) was developed to target the unique smoking relapse risk factors among cancer patients. Learner verification interviews were conducted with 10 cancer patients who recently quit smoking to elicit feedback and inform the development of the DVD. The DVD was then refined using iterative processes and feedback from the learner verification interviews. Major changes focused on visual appeal, and the inclusion of additional testimonials and graphics …

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Segmented Filamentous Bacteria Critically Regulates Commensal Gut Microbiota Osteoimmune Response Effects During Post-Natal Skeletal Development, Nicole Ann Poulides Jan 2018

Segmented Filamentous Bacteria Critically Regulates Commensal Gut Microbiota Osteoimmune Response Effects During Post-Natal Skeletal Development, Nicole Ann Poulides

MUSC Theses and Dissertations

Problem: The role of individual commensal microbes within the commensal gut microbiota on regulating osteoimmune effects in the growing/developing skeleton is currently unidentified. Discerning a specific commensal gut microbe’s impact on osteoimmune processes is important because this knowledge could be employed to optimize skeletal growth in adolescents. Approach: To investigate this, two specific pathogen free murine models were used because of their one reported microbial difference: murine pathogen free (MPF) mice are colonized by segmented filamentous bacteria (SFB) vs. excluded flora (EF) mice, which are void of SFB. The mice were sacrificed at 9 weeks to investigate SFB’s effects on …

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Survival Mechanisms Of Porphyromonas Gingivalis In Human Primary Gingival Epithelial Cells: An Investigation Of Host Antibacterial Nox And Autophagy Systems, Joann Simone Roberts Jan 2018

Survival Mechanisms Of Porphyromonas Gingivalis In Human Primary Gingival Epithelial Cells: An Investigation Of Host Antibacterial Nox And Autophagy Systems, Joann Simone Roberts

MUSC Theses and Dissertations

Porphyromonas gingivalis, an opportunistic pathogen usurps gingival epithelial cells (GECs) as a primary intracellular niche for its colonization in the oral mucosa. P. gingivalis abrogates the effects of host danger molecule, extracellular ATP (eATP)/P2X7 signaling, such as the generation of reactive oxygen species (ROS) via the mitochondria and NADPH oxidases (NOX) from primary GECs. Furthermore, P. gingivalis harnesses autophagic machinery to establish a replicative niche inside LC3-positive ER-rich autophagosomes. However, the antimicrobial functions of ROS production and precise characterization of the intracellular trafficking and fate of P. gingivalis in GECs are not well understood. Therefore, using a variety of phenotypic …

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Investigating Hematopoietic Stem Cell-Derived Osteoblasts, Ryan Richard Kelly Jan 2018

Investigating Hematopoietic Stem Cell-Derived Osteoblasts, Ryan Richard Kelly

MUSC Theses and Dissertations

Bone remodeling requires a continuous supply of osteoblasts and osteoclasts from bone marrow (BM) stem cells. The traditional paradigm suggests mesenchymal stromal cells (MSC) generate osteoblasts, while hematopoietic stem cells (HSC) generate osteoclasts. However, our lab has shown, through murine clonal cell transplantation, HSCs are able to differentiate into osteoblasts, osteocytes, and hypertrophic chondrocytes during non-stabilized fracture repair. Based on these studies, we hypothesized that murine HSC-derived cells differentiate into functional osteoblasts that can promote fracture repair. HSC-derived CD45+ adherent BM cells were shown to differentiate into osteoblasts in vitro, based on flow cytometry, qRT-PCR, and histochemical staining. Use of …

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Finding Moments Of Meaning In Undergraduate Education: How The Scholarship Of Teaching And Learning Can Help, Jeffrey L. Bernstein Jan 2018

Finding Moments Of Meaning In Undergraduate Education: How The Scholarship Of Teaching And Learning Can Help, Jeffrey L. Bernstein

International Journal for the Scholarship of Teaching & Learning

I argue for the value of high-impact educational practices as tools to minimize the commoditization of higher education. As a vehicle for doing so, I discuss a travel course to Washington, D.C. that I have led. This course is a significant and meaningful learning experience for the students who participate. In reflecting upon the value of this course, I suggest that scholars of teaching and learning have a particular responsibility to resist the increasing commoditization of higher education. Instead, we must think about embedding significant and transformative elements into the curriculum. Scholars of teaching and learning must help to demonstrate, …

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Variations In Classroom Language Environments Of Preschool Children Who Are Low Income And Linguistically Diverse, Brook Sawyer, Sally Atkins-Burnett, Lia Sandilos, Carol Scheffner Hammer, Lisa López, Clancy Blair Jan 2018

Variations In Classroom Language Environments Of Preschool Children Who Are Low Income And Linguistically Diverse, Brook Sawyer, Sally Atkins-Burnett, Lia Sandilos, Carol Scheffner Hammer, Lisa López, Clancy Blair

Educational and Psychological Studies Faculty Publications

Research Findings: This study aimed to (a) provide an in-depth description of the frequency and type of language interactions that children who are low income and/or dual language learners (DLLs) experience in their classrooms and (b) examine whether differences exist in children’s language experiences based on children’s DLL status and level of English proficiency. Using the Language Interaction Snapshot, we observed 4 focal children in each of 72 early childhood classrooms: 1 monolingual English-speaking child (i.e., non-DLL), 1 Spanish-dominant DLL child, and 2 bilingual Spanish–English DLL children. Findings indicated that both lead and assistant teachers predominantly spoke in English …

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County-Level Cie Supply Chain Analysis, Randall Jackson, Peter Jarosi Jan 2018

County-Level Cie Supply Chain Analysis, Randall Jackson, Peter Jarosi

Appalachian Coal Industry Ecosystem

This report examines the impact of the decline in coal production on supply chain industries at the county level across Appalachia. It offers, and uses, a typology to classify counties based on their dependence on the CIE, recent employment changes due to reduced coal production, and their risk for further impacts due to any future declines in the coal industry.

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Cocaine Selectively Reorganizes Excitatory Inputs To Substantia Nigra Pars Compacta Dopamine Neurons, Gerard M.J. Beaudoin Iii, J. A. Gomez, J. M. Perkins, J. L. Bland, A. K. Petko, C. A. Paladini Jan 2018

Cocaine Selectively Reorganizes Excitatory Inputs To Substantia Nigra Pars Compacta Dopamine Neurons, Gerard M.J. Beaudoin Iii, J. A. Gomez, J. M. Perkins, J. L. Bland, A. K. Petko, C. A. Paladini

Biology Faculty Research

Substantia nigra pars compacta (SNc) dopamine neurons and their targets are involved in addiction and cue-induced relapse. However, afferents onto SNc dopamine neurons themselves appear insensitive to drugs of abuse, such as cocaine, when afferents are collectively stimulated electrically. This contrasts with ventral tegmental area (VTA) dopamine neurons, whose glutamate afferents react robustly to cocaine. We used an optogenetic strategy to isolate identified SNc inputs and determine whether cocaine sensitivity in the mouse SNc circuit is conferred at the level of three glutamate afferents: dorsal raphé nucleus (DR), pedunculopontine nucleus (PPN), and subthalamic nucleus (STN). We found that excitatory afferents …

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Impact Of Ramaekers Immune Primer On Finishing Beef Cattle Performance And Liver Abscess Rate, Hannah C. Wilson, F. Henry Hilscher, Bradley M. Boyd Boyd, Jim C. Macdonald, Galen E. Erickson Jan 2018

Impact Of Ramaekers Immune Primer On Finishing Beef Cattle Performance And Liver Abscess Rate, Hannah C. Wilson, F. Henry Hilscher, Bradley M. Boyd Boyd, Jim C. Macdonald, Galen E. Erickson

Nebraska Beef Cattle Reports

A feedlot study was conducted comparing a natural feed additive (Ramaekers Immune Primer) to Tylan or nothing on receiving and finishing performance. There were no differences for final BW, ADG, F:G, HCW, marbling, LM area, or fat thickness due to treatment. Liver abscess incidence and severity were reduced in steers fed Tylan, no differences were noted between Ramaekers Immune Primer and no additive. There was no difference in number of cattle treated for respiratory illness. Steers on the Ramaekers Immune Primer treatment had lower feed intake during the receiving period but had similar ADG and numerically better F:G at day …

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Effect Of Backgrounding System On Performance And Profitability Of Yearling Beef Steers, Cody A. Welchons, Robby G. Bondurant, F. Henry Hilscher Hilscher, Andrea K. Watson, Galen E. Erickson, Jim C. Macdonald Jan 2018

Effect Of Backgrounding System On Performance And Profitability Of Yearling Beef Steers, Cody A. Welchons, Robby G. Bondurant, F. Henry Hilscher Hilscher, Andrea K. Watson, Galen E. Erickson, Jim C. Macdonald

Nebraska Beef Cattle Reports

Five summer management strategies were compared following grazing corn residue through winter. Cattle were assigned to be 1) summer finished, 2) graze bromegrass, 3) graze bromegrass and fed distillers grains at 0.6% of BW, 4) backgrounded in a drylot pen to gain 1.70 lb/d, or 5) backgrounded in a drylot pen to gain 2.35 lb/d. Results differed by year, however, in general as backgrounding ADG increased, days required on feed to reach an equal fat endpoint decreased. In year 1, ADG of cattle grazing bromegrass was less than cattle backgrounded in pens. There was no difference in finishing ADG for …

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Effect Of Continuous Or Rotational Grazing On Growing Steer Performance And Land Production, Cody A. Welchons, Robby G. Bondurant, F. Henry Hilscher Hilscher, Terry J. Klopfenstein, Andrea K. Watson, Jim C. Macdonald Jan 2018

Effect Of Continuous Or Rotational Grazing On Growing Steer Performance And Land Production, Cody A. Welchons, Robby G. Bondurant, F. Henry Hilscher Hilscher, Terry J. Klopfenstein, Andrea K. Watson, Jim C. Macdonald

Nebraska Beef Cattle Reports

Individual animal performance and animal production per acre were evaluated for steers grazing smooth bromegrass over 2 consecutive years. Treatments consisted of steers continuously grazing smooth bromegrass and initially stocked at either 4.0 animal unit months (AUM)/ac (HI) or 2.8 AUM/ac (LO) or steers rotationally grazing smooth bromegrass and initially stocked at 4.0 AUM/ac (ROT). Average calculated stocking rate for the LO, HI, and ROT treatments was greater than initial stocking rates due to the use of put and take animals. In vitro organic matter digestibility and crude protein of rotationally grazed pastures was relatively constant as the grazing season …

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Effects Of Movement And Activity Behavior In A Pasture System Compared To Time, Jace R. Stott, Mitchell B. Stephenson, Kathryn J. Hanford Hanford Jan 2018

Effects Of Movement And Activity Behavior In A Pasture System Compared To Time, Jace R. Stott, Mitchell B. Stephenson, Kathryn J. Hanford Hanford

Nebraska Beef Cattle Reports

During the summer of 2016 seventeen cows were fitted with Global Positioning System (GPS) tracking collars to evaluate activity characteristics of cattle on rangelands. Data collected included daily distance traveled, average distance from water, daily time spent at water, daily area covered, and percent of day spent active (traveling or grazing). These variables were analyzed weekly to assess changes in behavior as time within pastures increased during three time periods of the growing season. Based on data collected from mid-May to mid-September, cattle showed little changes throughout the grazing season as to levels of activity through different periods of a …

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Statistics Used In The Nebraska Beef Report And Their Purpose Jan 2018

Statistics Used In The Nebraska Beef Report And Their Purpose

Nebraska Beef Cattle Reports

The purpose of beef cattle and beef product research at UNL is to provide reference information that represents the various populations (cows, calves, heifers, feeders, carcasses, retail products, etc) of beef production. Obviously, the researcher cannot apply treatments to every member of a population; therefore he/ she must sample the population. The use of statistics allows the researcher and readers of the Nebraska Beef report the opportunity to evaluate separation of random (chance) occurrences and real biological effects of a treatment. Following is a brief description of the major statistics used in the beef report. For a more detailed description …

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Impact Of Winter Supplementation Of May Calving Cows And Heifer Development System In Two Different Breeding Seasons On Subsequent Growth And Reproduction, Shelby A. Springman, Alicia C. Lansford, Jacqueline A. Musgrave Musgrave, John Nollette, Andy Applegarth, Richard N. Funston Jan 2018

Impact Of Winter Supplementation Of May Calving Cows And Heifer Development System In Two Different Breeding Seasons On Subsequent Growth And Reproduction, Shelby A. Springman, Alicia C. Lansford, Jacqueline A. Musgrave Musgrave, John Nollette, Andy Applegarth, Richard N. Funston

Nebraska Beef Cattle Reports

In Exp. 1, May-calving cows were utilized to evaluate the effects of winter supplementation on heifer progeny. Cows grazed either dormant upland winter range with or without a protein supplement or grazed dormant meadow with or without a protein supplement. In Exp. 2, replacement heifers from March and May calving herds were offered ad libitum meadow hay and 4 lb/d supplement or grazed meadow and offered 1 lb/d supplement from mid-January to mid-April. Calf weaning BW and ADG from birth to weaning was less for calves from cows grazing winter range with no supplement compared with all other dam treatments. …

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Effect Of Injectable Trace Mineral On Reproductive Performance In Beef Heifers, Shelby A. Springman, John Maddux, Mary E. Drewnoski Drewnoski, Richard N. Funston Jan 2018

Effect Of Injectable Trace Mineral On Reproductive Performance In Beef Heifers, Shelby A. Springman, John Maddux, Mary E. Drewnoski Drewnoski, Richard N. Funston

Nebraska Beef Cattle Reports

Trace minerals serve an essential role in regulating reproduction. Free-choice trace mineral supplementation is often provided to grazing beef cattle. An injectable trace-mineral solution used with free-choice trace minerals may be beneficial before breeding to improve mineral status. Therefore, Red Angus-based, May-born heifers were utilized to determine the effects of an injectable trace mineral on reproductive performance. Pregnancy rates did not differ between heifers injected with a trace mineral and heifers that received no injection. Injectable trace mineral at CIDR insertion 33 d before artificial insemination did not influence reproductive performance in heifers with adequate trace mineral status.

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Evaluating Methods Of Estimating Forage Intake By Grazing Cattle, Aaron J. Shropshire, Walter H. Schacht, Jerry D. Volesky Volesky Jan 2018

Evaluating Methods Of Estimating Forage Intake By Grazing Cattle, Aaron J. Shropshire, Walter H. Schacht, Jerry D. Volesky Volesky

Nebraska Beef Cattle Reports

Two methods of estimating forage intake of grazing cattle were compared to clipped estimates in 4-pasture rotational grazing systems on Sandhills subirrigated meadow from mid-May through early August over a 4-year period. Clipping standing vegetation samples within a pasture before and after cattle grazing provides for an accurate estimate of forage removal during a grazing period. A less laborious method of intake estimation commonly used is based on a percentage of an animal’s liveweight. University Extension and some federal agencies use a 2.3% factor and others such as the Natural Resources Conservation Service use a 2.7% factor. In this study …

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Letrozole: A Steroid-Free Estrous Synchronization Method, Sarah M. Romereim, Sarah C. Tenley, Mohamed A. Abedal-Majed Majed, Jeffrey W. Bergman, Scott G. Kurz, John S. Davis, Jennifer R. Wood, Andrea S. Cupp Jan 2018

Letrozole: A Steroid-Free Estrous Synchronization Method, Sarah M. Romereim, Sarah C. Tenley, Mohamed A. Abedal-Majed Majed, Jeffrey W. Bergman, Scott G. Kurz, John S. Davis, Jennifer R. Wood, Andrea S. Cupp

Nebraska Beef Cattle Reports

Most bovine estrous synchronization protocols utilize progesterone plus estrogen to control ovulation timing. A drug that inhibits estrogen production (Letrozole) may be an alternative, steroid-free synchronization method (not yet commercially available). However, low estrogen can negatively affect the health of follicles/oocytes and impact fertility. To determine its effects, Letrozole was administered intramuscularly while tracking follicle growth and circulating hormones. Letrozole response was variable. Two of three cows experienced delayed luteolysis/ovulation and extended progesterone production. This preliminary data indicates that Letrozole treatment allows normal follicle progression but drug response may vary and little is known about effects on oocyte quality.

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Impact Of Dietary Fat Source On Beef Display Life, Felipe A. Ribeiro, Katherine I. Domenech-Perez, Emery K. Wilkerson Wilkerson, Hope Voegele, Nicolas J. Herrera, Kellen B. Hart, Chris R. Calkins Jan 2018

Impact Of Dietary Fat Source On Beef Display Life, Felipe A. Ribeiro, Katherine I. Domenech-Perez, Emery K. Wilkerson Wilkerson, Hope Voegele, Nicolas J. Herrera, Kellen B. Hart, Chris R. Calkins

Nebraska Beef Cattle Reports

This study was conducted to evaluate the effects of dietary fat source with modified distillers grains plus solubles (MDGS) on beef display life. Steers were fed either a corn control, full-fat MDGS, de-oiled MDGS, or de-oiled MDGS plus corn oil diet. Strip loins were aged for 2, 9, 16 and 23 days and placed under retail conditions for 7 days. Results suggest that feeding MDGS to cattle increases polyunsaturated fatty acid content of beef and has the potential to reduce beef color and lipid stability in comparison to corn diets. These data indicate that feeding MDGS to cattle may decrease …

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Using A Cured Meat Model System To Investigate Factors That Influence Cured Color Development, Jennifer A. Posthuma, Faith D. Rasmussen, Gary A. Sullivan Sullivan Jan 2018

Using A Cured Meat Model System To Investigate Factors That Influence Cured Color Development, Jennifer A. Posthuma, Faith D. Rasmussen, Gary A. Sullivan Sullivan

Nebraska Beef Cattle Reports

Producing cured meats manufactured with natural ingredients could impact cured meat characteristics, including color. The objective of this study was to determine the effects of nitrite source (sodium nitrite or cultured celery juice powder), reducing agents (no reducing compound or sodium erythorbate/ ascorbic acid), and holding times prior to cooking on cured color development in a meat model system. The addition of reducing compounds had the largest impact on cured color development and reduced residual nitrite in a cured meat model system. Treatments cured with sodium nitrite had slightly greater cured color development than treatments cured with celery juice powder. …

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Repeated Calm Handling Can Lead To More Docile Cattle, Jamie T. Parham, Amy E. Tanner, Mark L. Wahlberg Wahlberg, W. S. Swecker Jr., Ronald M. Lewis Jan 2018

Repeated Calm Handling Can Lead To More Docile Cattle, Jamie T. Parham, Amy E. Tanner, Mark L. Wahlberg Wahlberg, W. S. Swecker Jr., Ronald M. Lewis

Nebraska Beef Cattle Reports

Changes in temperament in heifers when handled either frequently or infrequently were evaluated subjectively based on their behavior when restrained in (chute score) and exiting from (exit score) a squeeze chute. Chute scores decreased over time–a favorable direction–with more dramatic declines in heifers handled more frequently. Heifers with higher chute scores on the first day of handling had the largest reduction in score. Exit scores changed less over time. Chute score therefore may be more indicative of acclimation to a novel environment than exit score. Both scores appear to offer a fast, easy and inexpensive way to quantify docility in …

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Rumen Undegradable Protein Content And Digestibility Of Corn Silage And High-Moisture Corn, Colton R. Oney, Jana L. Gramkow, F. Henry Hilscher Hilscher, Elizabeth Schumacher, Andrea K. Watson, Galen E. Erickson, Jim C. Macdonald, Terry J. Klopfenstein Jan 2018

Rumen Undegradable Protein Content And Digestibility Of Corn Silage And High-Moisture Corn, Colton R. Oney, Jana L. Gramkow, F. Henry Hilscher Hilscher, Elizabeth Schumacher, Andrea K. Watson, Galen E. Erickson, Jim C. Macdonald, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

Two studies were conducted to determine rumen undegradable protein (RUP) content and digestibility in corn silage. In Exp. 1, 37 and 42% DM corn silage were incubated in situ with two ruminally and one duodenally cannulated steer to calculate RUP content and RUP digestibility. In Exp. 2, dry rolled corn was reconstituted to 75, 70, 65, and 50% DM and ensiled in mini silos for 30, 90, 180, or 270 days. After ensiling, samples were ruminally incubated to determine RUP content of the grain. The grain within corn silage is less than 50% DM, as moisture content increases and time …

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The Effect Of Inoculants On Nutrient Losses Of Corn Silage And High-Moisture Corn Stored In Mini Silos, Colton R. Oney, Jana L. Gramkow, Andrea K. Watson Watson, Galen E. Erickson, Jim C. Macdonald, M. K. Biddlecome Jan 2018

The Effect Of Inoculants On Nutrient Losses Of Corn Silage And High-Moisture Corn Stored In Mini Silos, Colton R. Oney, Jana L. Gramkow, Andrea K. Watson Watson, Galen E. Erickson, Jim C. Macdonald, M. K. Biddlecome

Nebraska Beef Cattle Reports

Two experiments were conducted to determine the effects of inoculants (BONSILAGE CORN 200G and BONSILAGE HMC 200G) containing Lactobacillus buchneri, Lactobacillus plantarum and Pediococcus acidilactici on nutrient losses and aerobic stability of corn silage and high moisture corn. Corn silage and high moisture corn were inoculated and stored in mini silos with nutrient loss and spoilage characterizations at 30, 90, and 120 days with multiple inoculation levels. Longer ensiling times led to greater total acid production. The higher levels of inoculation led to lower total acid production and higher pH. Inoculating corn silage and high moisture corn also affected …

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Effect Of Revalor-Xr And Revalor-Xh On Heifer Performance And Carcass Characteristics, Caitlin A. Ohnoutka, Bradley M. Boyd, F. Henry Hilscher Hilscher, Grant I. Crawford, Brandon L. Nuttleman, Galen E. Erickson Jan 2018

Effect Of Revalor-Xr And Revalor-Xh On Heifer Performance And Carcass Characteristics, Caitlin A. Ohnoutka, Bradley M. Boyd, F. Henry Hilscher Hilscher, Grant I. Crawford, Brandon L. Nuttleman, Galen E. Erickson

Nebraska Beef Cattle Reports

A feedlot study evaluated the effects of 4 implant strategies (Revalor-XR on day 1, Revalor-XH on day 1, Revalor-200 on day 1, and Revalor-200 on day 70) on growth performance and carcass characteristics of feedlot heifers compared to non-implanted heifers fed 198 days. Intake was not impacted by treatments. Implanted cattle had greater carcass-adjusted ADG and lower F:G compared to cattle that received no implant. Implanted treatments had significantly greater HCW, dressing percentages, and lower marbling scores compared to non-implanted cattle. Heifers implanted with Revalor-XR, Revalor-XH, and Revalor-200 on day 70 had larger LM area resulting in lower calculated yield …

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Late Summer Planted Oat-Brassica Forage Quality Changes During Winter Grazing, Mary E. Lenz, Jordan L. Cox, Kristin E. Hales Hales, Hannah C. Wilson, Mary E. Drewnoski Jan 2018

Late Summer Planted Oat-Brassica Forage Quality Changes During Winter Grazing, Mary E. Lenz, Jordan L. Cox, Kristin E. Hales Hales, Hannah C. Wilson, Mary E. Drewnoski

Nebraska Beef Cattle Reports

Oat, radish, and turnip samples were taken on pivots being grazed from November through January in Clay Center, Nebraska. The objective was to determine how the quality changed throughout the winter. The forage was observed to be high-quality (highly digestibility with moderate CP content). Digestibility did decline over this period but minimal changes in CP content were observed. From early November to early January, the digestibility of oats appeared to decline more (10% unit decline) than turnip and radish leaves (5% unit decrease). However, digestibility (67% IVOMD) and CP content (15%) of oats in early January were still as high …

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Comparison Of Two Alternate Prostaglandin Products In Yearling Beef Heifers, Alicia C. Lansford, Tonya L. Meyer, Richard N. Funston Funston Jan 2018

Comparison Of Two Alternate Prostaglandin Products In Yearling Beef Heifers, Alicia C. Lansford, Tonya L. Meyer, Richard N. Funston Funston

Nebraska Beef Cattle Reports

Yearling heifers were administered 1 of 2 alternate prostaglandin products (Lutalyse vs. Lutalyse HighCon), which differ in concentration of active ingredient and administration route. Timing of estrus, pregnancy rate to AI, and final pregnancy rate did not differ between treatments. Body weight and ADG were also not affected by prostaglandin treatment. These results indicate producers can utilize Lutalyse HighCon, administered subcutaneously (s.c.), to avoid injection site blemishes and reduce carcass discounts with no impact on estrus synchronization or pregnancy rates.

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Impact Of Syngenta Enogen Feed Corn On Finishing Cattle Performance And Carcass Characteristics, Melissa L. Jolly-Breithaupt, Curtis J. Bittner, F. Henry Hilscher Hilscher, Galen E. Erickson, James C. Macdonald, Matt K. Luebbe Jan 2018

Impact Of Syngenta Enogen Feed Corn On Finishing Cattle Performance And Carcass Characteristics, Melissa L. Jolly-Breithaupt, Curtis J. Bittner, F. Henry Hilscher Hilscher, Galen E. Erickson, James C. Macdonald, Matt K. Luebbe

Nebraska Beef Cattle Reports

Two finishing experiments were conducted to evaluate Syngenta Enogen Feed Corn containing an alpha amylase enzyme trait compared to the near negative isoline control corn at two locations on cattle performance and carcass characteristics. No statistical differences were observed for final BW, DMI, ADG, or F:G for steers fed Syngenta Enogen Feed Corn versus the near negative isoline control corn. Fat depth and calculated yield grade were greater for steers fed Syngenta Enogen Feed Corn; however, HCW and marbling scores were not different. Previous research has observed a 2.6% to 16.4% decrease in F:G when Syngenta Enogen Feed Corn was …

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Chopped Sugar Beets As A Component Of Beef Cow Diets, Karla H. Jenkins, Jacob A. Hansen Jan 2018

Chopped Sugar Beets As A Component Of Beef Cow Diets, Karla H. Jenkins, Jacob A. Hansen

Nebraska Beef Cattle Reports

Sugar beets not accepted for human consumption were evaluated as an energy source in a limit fed ration for confined beef cows. Initial and final body weight and body condition score were not different between wheat straw based diets containing wet distillers grains and either chopped sugar beets or corn. Body condition score change tended to be greater for the diet containing corn. However, cows on both treatments finished the study with a body condition score of 5.7. Chopped sugar beets mixed with wheat straw and stored in an agricultural bag underwent ensiling and did not result in choking issues. …

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Evaluation Of Brown Midrib Corn Silage For Growing And Backgrounding Beef Steers, F. Henry Hilscher, Curtis J. Bittner, John N. Anderson Anderson, Galen E. Erickson Jan 2018

Evaluation Of Brown Midrib Corn Silage For Growing And Backgrounding Beef Steers, F. Henry Hilscher, Curtis J. Bittner, John N. Anderson Anderson, Galen E. Erickson

Nebraska Beef Cattle Reports

A growing study evaluated three corn silage hybrids for growing crossbred steers. The three hybrids were: a standard corn silage hybrid which served as the control, a brown midrib hybrid, and an experimental brown mid rib hybrid with a softer endosperm. Intake, ADG, and ending BW were greater for steers fed either brown mid rib silage compared to control, but not different between the brown mid rib or experimental brown mid rib silage. While brown mid rib hybrids had greater DMI and ADG, there was no difference in F:G between all three treatments. Feeding brown mid rib hybrids as corn …

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