Life Sciences Commons^™

Attention Is Associated With Postural Control In Those With Chronic Ankle Instability, Adam B. Rosen, Nicholas T. Than, William Z. Smith, Jennifer M. Yentes, Melanie L. Mcgrath, Mukul Mukherjee, Sarah A. Myers, Arthur C. Maerlender

Center for Brain, Biology, and Behavior: Faculty and Staff Publications

Chronic ankle instability (CAI) is often debilitating and may be affected by a number of intrinsic and environmental factors. Alterations in neurocognitive function and attention may contribute to repetitive injury in those with CAI and influence postural control strategies. Thus, the purpose of this study was to determine if there was a difference in attentional functioning and static postural control among groups of Comparison, Coper and CAI participants and assess the relationship between them within each of the groups. Recruited participants performed single-limb balance trials and completed the CNS Vital Signs (CNSVS) computer-based assessment to assess their attentional function. Center …

Sandbagging On The Immediate Post-Concussion Assessment And Cognitive Testing (Impact) In A High School Athlete Population, Kathryn L. Higgins, Robert L. Denny, Arthur C. Maerlender

Center for Brain, Biology, and Behavior: Faculty and Staff Publications

The Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) is a computerized neuropsychological test battery commonly used to assess cognitive functioning after a concussion. It is recommended that application of ImPACT utilizes a baseline administration so athletes have an individualized baseline with which to compare post-injury results should they sustain a concussion. It has been suggested that athletes may provide suboptimal effort, called “sandbagging,” in order to return to their baseline cognitive scores, and thus to play, more quickly. This research examines ImPACT baseline scores when high school athletes were asked to attempt to “sandbag,” and compares those scores with scores …

Psychological And Neural Contributions To Appetite Self-Regulation, Luke E. Stoeckel, Leann L. Birch, Todd Heatherton, Traci Mann, Christine Hunter, Susan Czajkowski, Lisa Onken, Paige K. Berger, Cary R. Savage

Center for Brain, Biology, and Behavior: Faculty and Staff Publications

Objective: This paper reviews the state of the science on psychological and neural contributions to appetite self-regulation in the context of obesity. Methods: Three content areas (neural systems and cognitive functions; parenting and early childhood development; and goal setting and goal striving) served to illustrate different perspectives on the psychological and neural factors that contribute to appetite dysregulation in the context of obesity. Talks were initially delivered at an NIH workshop consisting of experts in these three content areas, and then content areas were further developed through a review of the literature. Results: Self-regulation of appetite involves a complex interaction …

Pilot Study Of Endurance Runners And Brain Responses Associated With Delay Discounting, Laura E. Martin, Jason-Flor V. Sisante, David R. Wilson, Angela A. Moody, Cary R. Savage, Sandra A. Billinger

Center for Brain, Biology, and Behavior: Faculty and Staff Publications

High levels of endurance training have been associated with potentially negative health outcomes and addictive-like symptoms such as exercise in the presence of injury and higher levels of impulsivity. This pilot study examined the relationships among self-report measures of addictive symptoms related to exercise and behavioral and neural measures of impulsivity in endurance runners. We hypothesized endurance runners would have increased preference for immediate rewards and greater activation of cognitive control regions when making decisions involving delayed rewards. Twenty endurance runners (at least 20 miles/week) were recruited to undergo measures of self-report exercise addiction symptoms, impulsive decision-making (delay discounting) and …

Lateral Hypothalamic Activity Indicates Hunger And Satiety States In Humans, Omid Talakoub, Raquel R. Paiva, Matija Milosevic, Marcelo Q. Hoexter, Ruth Franco, Eduardo Alho, Jessie Navarro, Jose F. Pereira Jr., Milos R. Popovic, Cary Savage, Antonio C. Lopes, Pedro Alvarenga, Durval Damiani, Manoel J. Teixeira, Euripides C. Miguel, Erich T. Fonoff, Marcelo C. Batistuzzo, Clement Hamani

Center for Brain, Biology, and Behavior: Faculty and Staff Publications

Lateral hypothalamic area (LHA) local field potentials (LFPs) were recorded in a Prader–Willi patient undergoing deep brain stimulation (DBS) for obesity. During hunger, exposure to food-related cues induced an increase in beta/ low-gamma activity. In contrast, recordings during satiety were marked by prominent alpha rhythms. Based on these findings, we have delivered alphafrequency DBS prior to and during food intake. Despite reporting an early sensation of fullness, the patient continued to crave food. This suggests that the pattern of activity in LHA may indicate hunger/satiety states in humans but attest to the complexity of conducting neuromodulation studies in obesity.

A Critical Assessment Of The “Sterile Womb” And “In Utero Colonization” Hypotheses: Implications For Research On The Pioneer Infant Microbiome, Maria Elisa Perez-Muñoz, Marie-Claire Arrieta, Amanda E. Ramer-Tait, Jens Walter

Department of Food Science and Technology: Faculty Publications

After more than a century of active research, the notion that the human fetal environment is sterile and that the neonate’s microbiome is acquired during and after birth was an accepted dogma. However, recent studies using molecular techniques suggest bacterial communities in the placenta, amniotic fluid, and meconium from healthy pregnancies. These findings have led many scientists to challenge the “sterile womb paradigm” and propose that microbiome acquisition instead begins in utero, an idea that would fundamentally change our understanding of gut microbiota acquisition and its role in human development. In this review, we provide a critical assessment of the …

The International Scientific Association For Probiotics And Prebiotics (Isapp) Consensus Statement On The Definition And Scope Of Prebiotics, Glenn R. Gibson, Robert W. Hutkins, Mary Ellen Sanders, Susan L. Prescott, Raylene A. Reimer, Seppo J. Salminen, Karen Scott, Catherine Stanton, Kelly S. Swanson, Patrice D. Cani, Kristin Verbeke, Gregor Reid

Department of Food Science and Technology: Faculty Publications

In December 2016, a panel of experts in microbiology, nutrition and clinical research was convened by the International Scientific Association for Probiotics and Prebiotics to review the definition and scope of prebiotics. Consistent with the original embodiment of prebiotics, but aware of the latest scientific and clinical developments, the panel updated the definition of a prebiotic: a substrate that is selectively utilized by host microorganisms conferring a health benefit. This definition expands the concept of prebiotics to possibly include non-carbohydrate substances, applications to body sites other than the gastrointestinal tract, and diverse categories other than food. The requirement for selective …

Epidemiological Investigation Of Candida Species Causing Bloodstream Infection In Pediatric Small Bowel Transplant Recipients, Mallory J. Suhr, João Carlos Gomes-Neto, Nabaraj Banjara, Diana F. Florescu, David F. Mercer, Peter C. Iwen, Heather E. Hallen-Adams

Department of Food Science and Technology: Faculty Publications

Small bowel transplantation (SBT) can be a life-saving medical procedure. However, these recipients experience high risk of bloodstream infections caused by Candida. This research aims to characterize the SBT recipient gut microbiota over time following transplantation and investigate the epidemiology of candidemia in seven pediatric patients. Candida species from the recipients’ ileum and bloodstream were identified by internal transcribed spacer sequence and distinguished to strain by multilocus sequence typing and randomly amplified polymorphic DNA. Antifungal susceptibility of bloodstream isolates was determined against nine antifungals. Twenty-two ileostomy samples harbored at least one Candida species. Fungemia were caused by Candida parapsilosis …

Peanut Allergen Threshold Study (Pats): Novel Single-Dose Oral Food Challenge Study To Validate Eliciting Doses In Children With Peanut Allergy, Jonathan O'B. Hourihane, Katrina J. Allen, Wayne G. Shreffler, Gillian Dunngalvin, Julie A. Nordlee, Giovanni A. Zurzolo, Audrey Dunngalvin, Lyle C. Gurrin, Joseph L. Baumert, Steve L. Taylor

Department of Food Science and Technology: Faculty Publications

Background: Eliciting doses (EDs) of allergenic foods can be defined by the distribution of threshold doses for subjects within a specific population. The ED₀₅ is the dose that elicits a reaction in 5% of allergic subjects. The predicted ED₀₅ for peanut is 1.5 mg of peanut protein (6 mg of whole peanut).

Objective: We sought to validate the predicted peanut ED05 (1.5 mg) with a novel single-dose challenge.

Methods: Consecutive eligible children with peanut allergy in 3 centers were prospectively invited to participate, irrespective of previous reaction severity. Predetermined criteria for objective reactions were used …

Detoxification Of Mitochondrial Oxidants And Apoptotic Signaling Are Facilitated By Thioredoxin-2 And Peroxiredoxin-3 During Hyperoxic Injury, Benjamin J. Forred, Darwin R. Daugaard, Brianna K. Titus, Ryan R. Wood, Miranda J. Floen, Michelle L. Booze, Peter F. Vitiello

School of Veterinary and Biomedical Sciences: Faculty Publications

Mitochondria play a fundamental role in the regulation of cell death during accumulation of oxidants. High concentrations of atmospheric oxygen (hyperoxia), used clinically to treat tissue hypoxia in premature newborns, is known to elicit oxidative stress and mitochondrial injury to pulmonary epithelial cells. A consequence of oxidative stress in mitochondria is the accumulation of peroxides which are detoxified by the dedicated mitochondrial thioredoxin system. This system is comprised of the oxidoreductase activities of peroxiredoxin-3 (Prx3), thioredoxin-2 (Trx2), and thioredoxin reductase-2 (TrxR2). The goal of this study was to understand the role of the mitochondrial thioredoxin system and mitochondrial injuries during …

Maternal Inflammation At Mid-Gestation In Pregnant Rats Impairs Fetal Muscle Growth And Development At Term, C. N. Cadaret, K. A. Beede, E. M. Merrick, T. L. Barnes, J. D. Loy, D. T. Yates

School of Veterinary and Biomedical Sciences: Faculty Publications

Intrauterine growth restriction (IUGR) is a leading cause of perinatal morbidity and mortality. Low birth weight resulting from preterm birth and/or IUGR is an underlying factor in 60–80% of perinatal death worldwide, and is particularly common in developing countries (UNICEF, 2008). Furthermore, studies have linked IUGR and the associated fetal malnutrition to increased incidence of metabolic syndrome in adult life (Barker et al., 1993; Godfrey and Barker, 2000). The “thrifty phenotype hypothesis” developed by David Barker (Hales et al., 1991) states that IUGR-associated fetal malnutrition forces the fetus to spare nutrients by altering tissue-specific metabolism in order to survive. In …

Rapid Typing Of Mannheimia Haemolytica Major Genotypes 1 And 2 Using Maldi-Tof Mass Spectrometry, John Dustin Loy, Michael L. Clawson

School of Veterinary and Biomedical Sciences: Faculty Publications

Genotype 2 M. haemolytica predominantly associate over genotype 1 with the lungs of cattle with respiratory disease and ICEs containing antimicrobial resistance genes. Distinct protein masses were detected by MALDI-TOF MS between genotype 1 and 2 strains. MALDI-TOF MS could rapidly differentiate genotype 2 strains in veterinary diagnostic laboratories.

Cytolytic Toxin Production By Staphylococcus Aureus Is Dependent Upon The Activity Of The Protoheme Ix Farnesyltransferase, Emily Stevens, Maisem Laabei, Stewart Gardner, Greg A. Somerville, Ruth C. Massey

School of Veterinary and Biomedical Sciences: Faculty Publications

Staphylococcus aureus is a medically important pathogen with an abundance of virulence factors that are necessary for survival within a host, including the production of cytolytic toxins. The regulation of toxin production is mediated by the Agr quorum sensing system, and a poorly defined post-exponential growth phase signal independent of Agr. As part of a recent genome wide association study (GWAS) to identify novel loci that alter the expression of cytolytic toxins, a polymorphism in the cyoE gene, which encodes a protoheme IX farnesyltransferase, was identified. This enzyme is essential for processing heme into the electron transport chain for use …

The Effect Of Feed Form On Diet Digestibility And Cecal Parameters In Rabbits, Isabella Corsato Alvarenga, Charles Gregory Aldrich, Micah Kohles

School of Veterinary and Biomedical Sciences: Faculty Publications

Fifteen New Zealand rabbits were randomly assigned to one of 3 dietary treatment groups of 5 animals each and fed pelleted, extruded, or muesli diets in a completely randomized design experiment. Rabbits were placed in individual cages with ad libitum access to water and food for 45 days acclimation followed by 30 days experimental period. Feed intake of rabbits fed pelleted and extruded diets was greater (p < 0.05) than rabbits fed the muesli diet (125.6 and 130.4 vs. 91.9 g/d), but weight change and feed efficiency were not affected by treatment. Diet digestibility among the treatments was inconsistent when comparing results obtained from total fecal collection and AIA (please define) as an internal marker. Rabbits fed extruded and pelleted diets had lower (p < 0.05) cecal pH (6.42 and 6.38 vs. 7.02, respectively), and higher (p < 0.05) production of SCFA (18.5 and 19.0 vs. 11.7 mM, respectively) than those fed muesli. The fermentation products from rabbits fed pelleted and extruded diets had a greater proportion of butyrate and less propionate than rabbits fed muesli. The results of this study indicate that the basal dietary composition had a greater impact on diet utilization and cecal fermentation than food form.

A Parapoxviral Virion Protein Targets The Retinoblastoma Protein To Inhibit Nf-Κb Signaling, Ponnuraj Nagendraprabhu, Sushil Khatiwada, Sabal Chaulagain, Gustavo A. Delhon, Daniel L. Rock

School of Veterinary and Biomedical Sciences: Faculty Publications

Poxviruses have evolved multiple strategies to subvert signaling by Nuclear Factor κB (NF-κB), a crucial regulator of host innate immune responses. Here, we describe an orf virus (ORFV) virion-associated protein, ORFV119, which inhibits NF-κB signaling very early in infection (≤30 min post infection). ORFV119 NF-κB inhibitory activity was found unimpaired upon translation inhibition, suggesting that virion ORFV119 alone is responsible for early interference in signaling. A C-terminal LxCxE motif in ORFV119 enabled the protein to interact with the retinoblastoma protein (pRb) a multifunctional protein best known for its tumor suppressor activity. Notably, experiments using a recombinant virus containing an ORFV119 …

A Novel Role Of Silibinin As A Putative Epigenetic Modulator In Human Prostate Carcinoma, Ioannis Anestopoulos, Aristeidis P. Sfakianos, Rodrigo Franco, Katerina Chlichlia, Mihalis I. Panayiotidis, David J. Kroll, Aglaia Pappa

School of Veterinary and Biomedical Sciences: Faculty Publications

Silibinin, extracted from milk thistle (Silybum marianum L.), has exhibited considerable preclinical activity against prostate carcinoma. Its antitumor and chemopreventive activities have been associated with diverse effects on cell cycle, apoptosis, and receptor-dependent mitogenic signaling pathways. Here we hypothesized that silibinin’s pleiotropic effects may reflect its interference with epigenetic mechanisms in human prostate cancer cells. More specifically, we have demonstrated that silibinin reduces gene expression levels of the Polycomb Repressive Complex 2 (PRC2) members Enhancer of Zeste Homolog 2 (EZH2), Suppressor of Zeste Homolog 12 (SUZ12), and Embryonic Ectoderm Development (EED) in DU145 and PC3 human prostate cancer cells, …

Pathogenesis, Molecular Genetics, And Genomics Of Mycobacterium Avium Subsp. Paratuberculosis, The Etiologic Agent Of Johne’S Disease, Govardhan Rathnaiah, Denise K. Zinniel, John P. Bannantine, Judith R. Stabel, Yrjo T. Grohn, Michael T. Collins, Raul G. Barletta

School of Veterinary and Biomedical Sciences: Faculty Publications

Mycobacterium avium subsp. paratuberculosis (MAP) is the etiologic agent of Johne’s disease in ruminants causing chronic diarrhea, malnutrition, and muscular wasting. Neonates and young animals are infected primarily by the fecal–oral route. MAP attaches to, translocates via the intestinal mucosa, and is phagocytosed by macrophages. The ensuing host cellular immune response leads to granulomatous enteritis characterized by a thick and corrugated intestinal wall. We review various tissue culture systems, ileal loops, and mice, goats, and cattle used to study MAP pathogenesis. MAP can be detected in clinical samples by microscopy, culturing, PCR, and an enzyme-linked immunosorbent assay. There are commercial …

Development Of Terminal And Maternal Economic Selection Indices In Beefmaster Cattle, Kathleen P. Ochsner, Michael D. Macneil, Ronald M. Lewis, Matthew L. Spangler

Nebraska Beef Cattle Reports

Two economic selection indices were developed for Beefmaster cattle, one for a terminal objective and one for a maternal objective. The terminal index was developed assuming bulls would be mated to mature cows with all resulting progeny harvested. The maternal index was developed assuming bulls would be mated to a combination of heifers and mature cows, with resulting progeny retained as replacements or sold at weaning. Relative economic values for the terminal objective traits hot carcass weight, marbling score, ribeye area, 12th- rib fat and feed intake were 91.29, 17.01, 8.38,- 7.07 and- 29.66, respectively. Relative economic values for the …

Organic Acids And Applications Used For Reduction Of E. Coli On Beef Shoulder Clods Used For Ground Beef, Kelly A. Mccarty, Gary A. Sullivan, Dennis E. Burson Burson

Nebraska Beef Cattle Reports

Small processors normally grind beef shoulder clods for ground beef that have not been previously tested for shiga toxin-producing E. coli. Three antimicrobial solutions were applied using three application methods to beef sub-primals to evaluate the effectiveness of reducing E. coli and the effects on quality attributes. Antimicrobials effectively reduced Rifampicin resistant E. coli. However, none of the treatments changed color attributes or total plate counts compared to a control. These results suggest that an appropriate antimicrobial solution and application method can be selected for use by small meat processors without affecting quality attributes.

Shelf Life Of Ground Beef From Cattle Fed Distillers Grains Containing Different Amounts Of Oil, Faith D. Rasmussen, Chad G. Bower, Gary A. Sullivan Sullivan

Nebraska Beef Cattle Reports

Beef shoulder clods were collected from steers fed one of four finishing diets: no distillers grains and three with distillers grains containing different amounts of oil. Raw ground beef patties were evaluated for changes in objective color, discoloration, and lipid oxidation during simulated retail display (7 days). Cooked beef links in refrigerated (18 days) and frozen storage (198 days) were analyzed for lipid oxidation throughout shelf life. Fatty acid profiles were evaluated in lean, subcutaneous fat, and ground composite samples. All distillers grain diets increased C18:2 and polyunsaturated fatty acids in beef. There were no dietary differences in lipid oxidation …

Rumen Undegradable Protein And Bambermycins Supplementation Of Calves Grazing Corn Residue, Cody A. Welchons, Robert G. Bondurant, F. Henry Hilscher Hilscher, Jim C. Macdonald, Galen E. Erickson

Nebraska Beef Cattle Reports

Steer calves grazing non- irrigated corn residue were supplemented with a corn residue and by- product pellet that contained either Soypass, soybean meal, or processed soybean meal at a rate of 4 lb / d. Additionally, a supplement was fed at 1 lb / d that provided 0 or 20 mg / steer daily of bambermycins (Gainpro®). There was no interaction between bambermycins inclusion and pellet type. Likewise, there was no effect of pellet type or bambermycins on ending BW or ADG. In order to maximize gain of calves grazing corn residue it is important to provide a supplement that …

Effect Of Heifer Development System On Reproduction And Subsequent Gain As A Pregnant Heifer, Shelby A. Springman, Hazy Rae Nielson, Tonya L. Meyer, Mike Kirby, Jim Teichert, Richard N. Funston

Nebraska Beef Cattle Reports

Weaned heifers grazed corn residue, upland range, or were fed 1 of 2 drylot diets differing in energy. Heifer development diets did not impact their resulting AI or final pregnancy rates. Cost per pregnant heifer was similar among treatments. A subset of AI- pregnant heifers was placed in a Calan Broadbent individual feeding system during late gestation. As a pregnant heifer, feed efficiency was not impacted by development system. These results indicate producers may utilize their most readily available and/or cost- effective feed resources with no detriment to pregnancy rates or feed efficiency as first- calf heifers.

Effect Of Long- Term Corn Residue Grazing On Soil Properties, Manbir K. Rakkar, Humberto Blanco, Mary E. Drewnoski Drewnoski, Jim C. Macdonald, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

An experiment was conducted to evaluate the effect of long- term (16 years) corn residue grazing with cattle on soil compaction, soil structure, soil organic matter, and nutrients. Three treatments: 1) fall grazing (November through January; 1.8 to 2.5 AUM/ac), 2) spring grazing (February to middle April; 2.3 to 3.1 AUM/ac), and 3) control (no grazing) under a no- till irrigated corn- soybean system in eastern Nebraska were studied. Crop yields were increased and soil bulk density and cone index (parameters of soil compaction), wet soil aggregate stability (parameter of soil structural quality), and organic matter content were not affected …

In Situ Digestibility Of Residue Parts Of Corn Planted In Different Populations And Row Widths, Viviane B. Ferrari, Janessa J. Updike, Jana Harding Harding, Keith Glewen, Terry J. Klopfenstein, Jim C. Macdonald

Nebraska Beef Cattle Reports

Plant density can be changed by altering row width and/or number of plants within a row. The use of narrower rows at seeding may increase yield and reduce plant-toplant competition. Corn seeds were planted at 2 row widths (15 and 30- inch rows) and 3 plant populations (25,200, 35,000 and 54,000 seeds / acre). Samples of corn residue were collected 4 dates (October 8, October 24, November 5 and November 19) postharvest and separated into cob, stem, leaf and husk to determine changes in quality over time. Th e greatest plant population increased the NDF content and NDF digestibility of …

Effect Of Increasing Supplemental Rumen Undegradable Protein (Rup) On Performance Of Calves Fed A Silage Growing Diet, Colton R. Oney, F. Henry Hilscher, Robert G. Bondurant Bondurant, Andrea K. Watson, Galen E. Erickson, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

A growing study evaluated the effects of increasing supplemental rumen undegradable protein (RUP) on performance of calves fed an 85% corn silage diet. Five levels of supplementation were evaluated with 12 individually fed steers per level of supplement. Supplement levels consisted of 0, 3.25, 6.5, 9.75 and 13% supplemental RUP (% of diet DM) fed as a blend of 60% Soypass and 40% Empyreal. Increasing supplemental RUP in the diet increased ending body weight and average daily gain linearly, and decreased F:G linearly while DMI remained constant among treatments. As cattle grew from 600 to 730 lb, F:G was improved …

Comparison Of Diets Collected From Esophageally Fistulated Cows To Forage Quality Estimated From Fecal Analysis, Bethany M. Johnston, Jay D. Jenkins, Jacqueline A. Musgrave Musgrave, L. A. Stalker, Mitchell B. Stephenson

Nebraska Beef Cattle Reports

Differences in forage quality (crude protein and energy) were analyzed between esophageally fistulated diets, analysis of fecal samples with Nutrition Balance Analyzer (NUTBAL) analysis, and analysis of handclipped forage samples. On upland range sites, hand- clipped samples provided forage quality estimates that were closer to esophageally fistulated diets than samples analyzed with the NUTBAL analysis. Aft er one year of data collection, it appears that there may be some inconstancies with the NUTBAL analysis for estimates on rangeland forage quality in the Nebraska Sandhills. More data is needed to verify these results; however, making management supplementations decisions solely on the …

Summer Cocktail Forage Research In The Panhandle Of Nebraska, Karla H. Jenkins, Cody Creech, Robert Higgins Higgins, Josh Buttle

Nebraska Beef Cattle Reports

Four annual forage mixtures containing brown mid- rib sorghum sudangrass or German foxtail millet, cowpeas or soybeans, and forage collards were compared to the sorghum sudangrass or millet as monocultures in the Nebraska High Plains on dryland acres to determine the tonnage, crude protein, and digestibility available for beef cattle. Th e forage mixtures and the millet resulted in greater crude protein than the sorghum sudangrass. Total digestible nutrients of the mixers were similar. Sorghum sudangrass resulted in the most tonnage. These forage options could have been hayed or windrow grazed in the fall and would have likely resulted in …

Effects Of Wintering System On Cow And Calf Performance In A Summer- Calving Intensive Production System, Shelby E. Gardine, Jason M. Warner, Curtis J. Bittner Bittner, Robert G. Bondurant, Karla Jenkins, Richard J. Rasby, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

A study evaluated the effects of two wintering systems (cornstalk grazing and drylot feeding) on cow- calf performance in a summer- calving intensively managed cowherd at two locations. Grazing cow- calf pairs on cornstalks resulted in lower ending BW of cows and reduced ADG of calves when compared to drylot cow- calf pairs at weaning. A partial budget of incorporating winter cornstalk grazing into an intensive production system suggests that cows wintered on cornstalks were $136.85 more profitable when compared to cows wintered in the drylot.

Effects Of Modified Distillers Grains And Corn Ratios As Supplements In Diets Varying In Forage Quality On Performance Of Growing Beef Steers, Viviane B. Ferrari, Robert G. Bondurant, Galen E. Erickson Erickson, Terry J. Klopfenstein, Jim C. Macdonald

Nebraska Beef Cattle Reports

Distillers grains (DG) have been intensively used for beef production, but prices relative to corn vary such that it may be beneficial to displace a portion of DG with corn in certain circumstances. Four ratios of supplemental energy (40% of diet DM) from modified distillers grains and corn (100:0, 80:20, 60:40, and 40:60) were supplemented in one of 3 forage diets (56% of diet DM) and evaluated for performance. Forages were high (brome hay + sorghum silage) or low quality. Low quality forages were corn residue baled through conventional rake and bale, or by disengaging the spreader on the combine …

Fatty Acid Composition Of Beef Fed Omnigen- Af At Receiving Or Finishing, Katherine I. Domenech, Michael D. Chao, Joe O. Buntyn Buntyn, Ty B. Schmidt, Chris Calkins

Nebraska Beef Cattle Reports

Beef fatty acid profiles and superoxide dismutase activity were determined for cattle receiving OmniGen- AF supplementation (a patented nutritional supplement) at receiving (first 28 d at the feedlot) or throughout finishing (all 210 d of finishing) vs. a control group (non- supplemented). Th e most meaningful change in fatty acid composition from inclusion of OmniGen- AF was total poly- unsaturated fatty acid (PUFA) content where beef from the finishing group had more PUFA content in relation to the receiving group and was not different from the control group. Despite this increase in PUFA, cattle supplemented through finishing tended to have …