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2010

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Status Of Credit For Prior Learning (Cpl) At The University Of Kentucky For 2008 & 2009 Official Cohorts, Randolph Hollingsworth Jan 2010

Status Of Credit For Prior Learning (Cpl) At The University Of Kentucky For 2008 & 2009 Official Cohorts, Randolph Hollingsworth

Undergraduate Education White Papers

This paper explores the college readiness levels of University of Kentucky's incoming first-year students, especially in preparation for success in UK's STEM majors.  Attention is paid to the statewide standards using ACT sub-scores in English, Reading and Mathematics, as well as the students’ scores from nationally recognized assessments (e.g., Advanced Placement scores). Evidence regarding a significant number of our entering cohorts for 2008 and 2009 (first time first-year, full-time, degree-seeking) who bring in credit for prior learning (CPL) is examined, and the paper discusses briefly how CPL affects their placement in their fall semester courses.

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Purple Haze (Book Review), Clare Huntington Jan 2010

Purple Haze (Book Review), Clare Huntington

Faculty Scholarship

This is a review of Red Families v Blue Families: Legal Polarization and the Creation of Culture. By Naomi Cahn & June Carbone. New York: Oxford University Press. 2010

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The Role Of Cuticle, Fatty Acids, And Lipid Signaling In Plant Defense, Ye Xia Jan 2010

The Role Of Cuticle, Fatty Acids, And Lipid Signaling In Plant Defense, Ye Xia

Theses and Dissertations--Plant Pathology

Systemic acquired resistance (SAR) is initiated upon recognition of specific microbial effectors by cognate plant resistance proteins and immunizes distal tissues of plants against secondary infections. SAR involves the generation of a mobile signal at the site of primary infection, which then translocates to and activates defense responses in the distal tissues via some unknown mechanism(s). This study shows that an ACYL CARRIER PROTEIN 4 (ACP4), GLABRA1 (GL1) and ACYL CARRIER BINDING PROTEINS (ACBP) are required for the processing of the mobile SAR signal in distal tissues of Arabidopsis. Although acp4, gl1 and acbp plants generate the mobile signal, …

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Boosterism In Humboldt County, California, Kathryn Lasala Jan 2010

Boosterism In Humboldt County, California, Kathryn Lasala

Charles R. Barnum History Award Papers

No abstract provided.

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Identification Of A Nuclear Export Signal In The Catalytic Subunit Of Amp-Activated Protein Kinase, N. Kazgan, Tyisha Williams, L. J. Forsberg, J. E. Brenman Jan 2010

Identification Of A Nuclear Export Signal In The Catalytic Subunit Of Amp-Activated Protein Kinase, N. Kazgan, Tyisha Williams, L. J. Forsberg, J. E. Brenman

Biology Faculty Research

The metabolic regulator AMP-activated protein kinase (AMPK) maintains cellular homeostasis through regulation of proteins involved in energy-producing and -consuming pathways. Although AMPK phosphorylation targets include cytoplasmic and nuclear proteins, the precise mechanisms that regulate AMPK localization, and thus its access to these substrates, are unclear. We identify highly conserved carboxy-terminal hydrophobic amino acids that function as a leptomycin B–sensitive, CRM1-dependent nuclear export sequence (NES) in the AMPK catalytic subunit (AMPKα). When this sequence is modified AMPKα shows increased nuclear localization via a Ran-dependent import pathway. Cytoplasmic localization can be restored by substituting well-defined snurportin-1 or protein kinase A inhibitor (PKIA) …

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Evaluation Of Storage Covers When Wet Distillers Byproducts Are Mixed And Stored With Forages, Dana L. Christensen, Kelsey Rolfe, Terry J. Klopfenstein, Galen E. Erickson Jan 2010

Evaluation Of Storage Covers When Wet Distillers Byproducts Are Mixed And Stored With Forages, Dana L. Christensen, Kelsey Rolfe, Terry J. Klopfenstein, Galen E. Erickson

Nebraska Beef Cattle Reports

Wet corn co-products were mixed with forage and stored in 55 gallon barrelswith different covers mimicking bunker storage methods to determine shrink losses and spoilage. Three mix combinations and seven cover treatments were used to compare spoilage levels of covered co-product mixes vs. uncovered mixes. Spoilage and losses of the mix were effectively reduced with all covers, with losses reduced from 8 to 9% when uncovered, to 1 to 5% when different cover treatments were used.

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Alternative Muscles For Traditional Japanese And Korean Beef Recipes, Chris R. Calkins, Amilton S. Demello, Lasika S. Senaratne, Kanae Watanabe Jan 2010

Alternative Muscles For Traditional Japanese And Korean Beef Recipes, Chris R. Calkins, Amilton S. Demello, Lasika S. Senaratne, Kanae Watanabe

Nebraska Beef Cattle Reports

This research was conducted to identify alternative cuts that would be acceptable in popular dishes in Japan and Korea in order to encourage usage of a broader portion of beef carcasses that qualify for export. Typical dishes were tested twice (6 panels per country) using traditional and three alternative beef muscles. Dishes were compared regarding appearance, aroma, juiciness, tenderness, flavor, and overall acceptability by natives of each country who served as panelists. Japanese dishes were sukiyaki (sauté), shabu-shabu (hot pot), and yakiniku (grill); Korean dishes were jang jo rim (boiled), miyeok-guk (soup), and kalbi (grill). Alternative muscles were selected because …

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Comparing Ensiled Or Fresh Mixed Wet Distillers Grains With Solubles With Straw At Two Inclusions In Growing Calf Diets, Crystal D. Buckner, Terry J. Klopfenstein, Galen E. Erickson, William A. Griffin, Joshua R. Benton Jan 2010

Comparing Ensiled Or Fresh Mixed Wet Distillers Grains With Solubles With Straw At Two Inclusions In Growing Calf Diets, Crystal D. Buckner, Terry J. Klopfenstein, Galen E. Erickson, William A. Griffin, Joshua R. Benton

Nebraska Beef Cattle Reports

This study evaluated feeding ensiled or freshly mixed wet distillers grains with solubles (WDGS) with straw at 2 blends and the effect of an inoculum with the ensiled mixture on steer calf performance. Treatments included 30 or 45% WDGS (DM basis) mixed with straw and fed either as a fresh mix or ensiled with and without a microbial inoculum. No significant interactions were observed between type and level of mix. Steers fed the ensiled mixes had higher ADG and lower F:G compared to those fed the fresh mix.

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Fiber Digestibility And Rumen Ph For Diets Containing Wet Corn Gluten Feed Or Wet Distillers Grains With Solubles, Crystal D. Buckner, Kelsey Rolfe, Nathan Meyer, Terry J. Klopfenstein, Galen E. Erickson Jan 2010

Fiber Digestibility And Rumen Ph For Diets Containing Wet Corn Gluten Feed Or Wet Distillers Grains With Solubles, Crystal D. Buckner, Kelsey Rolfe, Nathan Meyer, Terry J. Klopfenstein, Galen E. Erickson

Nebraska Beef Cattle Reports

Seven ruminally cannulated steers were used to evaluate fiber digestibility and rumen pH for diets containing 35 or 88% wet corn gluten feed (WCGF) or 35% wet distillers grains with solubles (WDGS). These diets were top-dressed with or without a direct-fed microbial (DFM). Interactions were observed for DM and NDF digestibility. Feeding 88% WCGF decreased DM digestibility, but NDF digestibility increased especially with the DFM. Rumen pH was greatest for steers fed 88% WCGF and lowest for steers fed 35% WCGF.

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Distillers Grains And Livestock Are Important To Ethanol Energy And Greenhouse Gas Balance, Virgil R. Bremer, Adam J. Liska, Haishun Yang, Daniel T. Walters, Galen E. Erickson, Terry J. Klopfenstein, Richard K. Koelsch, Kenneth G. Cassman Jan 2010

Distillers Grains And Livestock Are Important To Ethanol Energy And Greenhouse Gas Balance, Virgil R. Bremer, Adam J. Liska, Haishun Yang, Daniel T. Walters, Galen E. Erickson, Terry J. Klopfenstein, Richard K. Koelsch, Kenneth G. Cassman

Nebraska Beef Cattle Reports

A life cycle assessment of the impact of distillers grains plus solubles (DGS) on mitigation of energy and greenhouse gas (GHG) emissions comparing corn ethanol to gasoline demonstrates the importanceof feeding wet DGS (WDGS) to feedlot cattle to optimize the environmental benefit of ethanol production relative to gasoline. Ethanol produced in Nebraska has a superior environmentalimpact compared to ethanol produced in Iowa or Texas.

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Tympanic Temperature Of Steers Fed Different Levels Of Metabolic Energy Intake During Summer And Winter, Rodrigo A. Arias, Terry L. Mader Jan 2010

Tympanic Temperature Of Steers Fed Different Levels Of Metabolic Energy Intake During Summer And Winter, Rodrigo A. Arias, Terry L. Mader

Nebraska Beef Cattle Reports

Tympanic temperatures (TT) of steers were recorded during July (8 days) and January (6 days). In each experiment, steers were fed 11, 18, or 25 Mcal/day ME in a roughage-based diet, or 18, 25, or 32 Mcal/day ME in a concentrate-based diet. Tympanic temperatures were greater during summer than during winter. Also, steers fed a concentrate diet had greater TT than those fed a roughage diet. Linear equations were obtained to estimate TT of cattle for summer and winter seasons. During the winter, TT response to MEI was dependent on the type of diet. Resultsdemonstrate that increases in the energy …

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Effects Of Feeding Wet Distillers Grains Plus Solubles And Vitamin E On Beef Tenderness And Color Under Different Packaging Systems, Amilton S. De Mello, Kanae Watanabe, Chris R. Calkins, Lasika S. Senaratne, Timothy P. Carr, Galen E. Erickson Jan 2010

Effects Of Feeding Wet Distillers Grains Plus Solubles And Vitamin E On Beef Tenderness And Color Under Different Packaging Systems, Amilton S. De Mello, Kanae Watanabe, Chris R. Calkins, Lasika S. Senaratne, Timothy P. Carr, Galen E. Erickson

Nebraska Beef Cattle Reports

The effects of feeding wet distillers grains plus solubles (WDGS), vitamin E supplementation (E), and modified atmosphere packaging (MAP) on Warner Bratzler shear force (WBSF) and sensorial tenderness were investigated in m. longissimus lumborum aged 7 or 21 days. Steers (n = 90) were allocated to dietary treatments consisting of corn or 35% WDGS with 0, 100, 300, 500, and 1000 I.U. of E per head daily. Afteraging, muscles were displayed for 5 days under O2 permeable film, high O2 and low O2 atmospheres. Feeding 1000E extendedcolor stability of permeable film-packaged steaks during retail display. Feeding WDGS led to higher …

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Fatty Acid Profile Of Beef From Steers Fed Wet Distillers Grains Plus Solubles (Wdgs) And Vitamin E, Amilton S. De Mello, Chris R. Calkins, Kanae Watanabe, Lasika S. Senaratne, Timothy P. Carr, Galen E. Erickson, Judy A. Driskell Jan 2010

Fatty Acid Profile Of Beef From Steers Fed Wet Distillers Grains Plus Solubles (Wdgs) And Vitamin E, Amilton S. De Mello, Chris R. Calkins, Kanae Watanabe, Lasika S. Senaratne, Timothy P. Carr, Galen E. Erickson, Judy A. Driskell

Nebraska Beef Cattle Reports

The aim of this work was to investigate the fatty acid profile of m. teres major (TER) and m. infraspinatus (INF) from steers fed 0 or 40% WDGS (DM basis) with or without 500 I.U. of vitamin E/steer daily for 100 days. Thirty-two steers were allocated to 4 treatments: Corn; Corn + vit. E; 40% WDGS; or 40% WDGS + vit. E. After 7 days of aging, 2 TER and 2 INF muscles were excised from the shoulder clods of each animal. Fatty acids were analyzed from raw TER and INF, pan fried TER and INF, and grilled INF. For …

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Reproductive Aging Influences Ovarian Function In Beef Cows, Robert A. Cushman, Jennifer R. Wood, Rachael G. Slattery, Debra T. Clopton, Jacqueline Smith, Kevin A. Beavers, William E. Pohlmeier, Jeffrey W. Bergman, Karl V. Moline, Andrea S. Cupp Jan 2010

Reproductive Aging Influences Ovarian Function In Beef Cows, Robert A. Cushman, Jennifer R. Wood, Rachael G. Slattery, Debra T. Clopton, Jacqueline Smith, Kevin A. Beavers, William E. Pohlmeier, Jeffrey W. Bergman, Karl V. Moline, Andrea S. Cupp

Nebraska Beef Cattle Reports

Anti-Müllerian Hormone (AMH) has been associated with follicle number and age of the ovary. Therefore, our hypothesiswas that AMH was a biomarker for both follicle number and ovarian function in the beef cow. Ovaries were collected by flank laparotomy. The number of follicles increased as cows aged from 1.5 to 6 years and began to decrease thereafter; however, the size of the ovary continued to increase with advanced age. Expression of the AMH gene increased with increasing follicle number in 2-year-old beef cows. These results suggest that heifers with larger ovaries will have greater numbers of follicles and greater productivity, …

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2010 Nebraska Beef Cattle Report Jan 2010

2010 Nebraska Beef Cattle Report

Nebraska Beef Cattle Reports

Cow/Calf
Effect of Calving Season and Wintering System on Cow Performance
Extending Grazing in Heifer Development Systems Decreases Cost Without Compromising Production
Post Weaning Management of Heifer Calves Impacts ADG and Feed Efficiency as Pregnant Heifers
Estrous Synchronization Increases Early Calving Frequency, Which Enhances Steer Progeny Value
Reproductive Aging Influences Ovarian Function in Beef Cows
Comparison of Feeding Wet Distillers Grains in a Bunk or on the Ground to Cattle Grazing Native Sandhills Winter Range.. 19 Supplementing Wet Distillers Grains Mixed with Low Quality Forage to Grazing Cow/Calf Pairs
Evaluation of Storage Covers When Wet Distillers Byproducts Are Mixed and …

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Genetic Analysis Of Mature Size In American Angus Cattle, Marco G. Dib, L. Dale Van Vleck, Matthew L. Spangler Jan 2010

Genetic Analysis Of Mature Size In American Angus Cattle, Marco G. Dib, L. Dale Van Vleck, Matthew L. Spangler

Nebraska Beef Cattle Reports

Genetic parameters for weights and heights of mature cows were estimated using a repeatability model from field data provided by the American Angus Association. The results showed that the heritabilities of both traits were large, and correlations between them were positive and strong. Selection on either trait should easily produce a response, and changing one should lead to a correlated response in the other. Genetic trend was generally for increasing cow weight over the last 25 years.

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Forage Quality And Grazing Performance Of Beef Cattle Grazing Brown Midrib Grain Sorghum Residue, Jacob R. Geiss, Andrea K. Watson, Galen E. Erickson, Terry J. Klopfenstein, Josh R. Benton, William A. Griffin, Robert B. Mitchell, Jeffrey F. Pedersen Jan 2010

Forage Quality And Grazing Performance Of Beef Cattle Grazing Brown Midrib Grain Sorghum Residue, Jacob R. Geiss, Andrea K. Watson, Galen E. Erickson, Terry J. Klopfenstein, Josh R. Benton, William A. Griffin, Robert B. Mitchell, Jeffrey F. Pedersen

Nebraska Beef Cattle Reports

Two hybrids of grain sorghum, the AWheatland x RTx430 hybrid (CON) and its near isogenic brown midrib counterpart (BMR), were used in a 65-day residue grazing experiment. Grain sorghum was planted in 4 replications for each treatment within the same field, and grazed with 6 steers/replication. Samples of the sorghum residue were collected on days 1, 31, and 60 for neutral detergent fiber (NDF) and in vitro NDF digestibility analysis. Steers grazing the BMR treatment gained 1.55 lb/day while the steers grazing the CON treatment gained 1.32 lb/day (P = 0.14). The BMR and CON were similar in NDF (73.5%), …

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Supplementing Dried Distillers Grains To Steers Grazing Cool Season Meadow, William A. Griffin, Brandon L. Nuttleman, Terry J. Klopfenstein, L. Aaron Stalker, Richard N. Funston, Jacqueline A. Musgrave Jan 2010

Supplementing Dried Distillers Grains To Steers Grazing Cool Season Meadow, William A. Griffin, Brandon L. Nuttleman, Terry J. Klopfenstein, L. Aaron Stalker, Richard N. Funston, Jacqueline A. Musgrave

Nebraska Beef Cattle Reports

Two experiments evaluated the performance response of supplementing dried distillers grains plus solubles (DDGS) to steers grazing cool season meadow. Steers were supplemented 0.0 or 0.6% of BW in Exp. 1, and 0.0, 0.6, or 1.2% of BW in Exp. 2. In Exp. 1, supplemented steers had 0.13 lb/day greater ADG. In Exp. 2, there was a linear response to supplementation level, with steers supplemented 1.2% of BW having greatest ADG. Diet samples indicate the differences were due to increased energy and not increased protein intake.

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Relationship Of Metabolizable Protein Balance, Purine Derivative Excretion, And 3-Methyl Histidine Excretion To Feed Efficiency In Individually Fed Finishing Heifers, William A. Griffin, Kelsey Rolfe, Grant I. Crawford, Terry J. Klopfenstein, Galen E. Erickson, Phillip S. Miller, Ruth M. Diedrichsen Jan 2010

Relationship Of Metabolizable Protein Balance, Purine Derivative Excretion, And 3-Methyl Histidine Excretion To Feed Efficiency In Individually Fed Finishing Heifers, William A. Griffin, Kelsey Rolfe, Grant I. Crawford, Terry J. Klopfenstein, Galen E. Erickson, Phillip S. Miller, Ruth M. Diedrichsen

Nebraska Beef Cattle Reports

Individually fed heifers were used to determine the relationship of 3-methyl histidine, purine derivatives, and metabolizableprotein balance to feed efficiency. Heifers were fed finishing dietsthat were either deficient or sufficient in metabolizable protein. Urine samples were collected and analyzed for early, late, and entire feeding period concentrations of 3-methyl histidine, purine derivatives, and creatinine. Results from this study indicated a negative relationship between feed efficiency and metabolizable protein balance, and no relationship between 3-methyl histidine excretion and feed efficiency, suggesting that protein turnover and microbial protein synthesis are not related to feed efficiency

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Sensory Attributes Of Beef From Steers Fed Field Peas, Jeremy H. Hinkle, Judson Vasconcelos, Stephanie A. Furman, Amilton S. De Mello Jr., Lasika S. Senaratne, Siroj Pokharel, Chris R. Calkins Jan 2010

Sensory Attributes Of Beef From Steers Fed Field Peas, Jeremy H. Hinkle, Judson Vasconcelos, Stephanie A. Furman, Amilton S. De Mello Jr., Lasika S. Senaratne, Siroj Pokharel, Chris R. Calkins

Nebraska Beef Cattle Reports

Field peas were fed at inclusion rates of 0, 10, 20 and 30% (DM basis) to 139 yearling steers (initial BW = 900 ± 68 lb). Choice grade strip loins and carcass data were collected from the Tyson Fresh Meats Plant in Lexington, Neb. Consumer sensory ratings and Warner-Bratzler shear force data were collected. Feeding field peas caused a cubicresponsein overall like (P = 0.009), tenderness (P = 0.006), and flavordesirabilityratings (P = 0.06), with the highest (most desirable) ratings occurring with 30% field peas. Shear force decreasedlinearly (P = 0.02) as field peas increased in the diet. These data …

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Effects Of Time Of Transporting Prior To Sale Date On Selling Weight Of Weaned Steer Calves, Luke M. Kovarik, Matt K. Luebbe, Richard J. Rasby, Galen E. Erickson Jan 2010

Effects Of Time Of Transporting Prior To Sale Date On Selling Weight Of Weaned Steer Calves, Luke M. Kovarik, Matt K. Luebbe, Richard J. Rasby, Galen E. Erickson

Nebraska Beef Cattle Reports

An experiment was conducted using 88 weaned steer calves to evaluate shrink difference when shipped at differing times prior to sale date. Two groups of calves were transported 24 hours prior to sale date, with one group being withheld from water and feed 2 hours prior to sale while the other group was not restricted. Another group (control) was transported 2 hours prior to the sale. All cattle were transported 95 miles and co-mingled at the sale facility prior to processing. Percent shrink for +1-Adlib, +1-R, and Control was 1.8, 2.2, and 0.6%, respectively.

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Estrous Synchronization Increases Early Calving Frequency, Which Enhances Steer Progeny Value, Daniel M. Larson, Jacqueline A. Musgrave, Richard N. Funston Jan 2010

Estrous Synchronization Increases Early Calving Frequency, Which Enhances Steer Progeny Value, Daniel M. Larson, Jacqueline A. Musgrave, Richard N. Funston

Nebraska Beef Cattle Reports

Calving records collected between 2000 and 2008 at the Gudmundsen Sandhills Laboratory, Whitman, Neb., were used to determine the effect of estrous synchronization on calving distribution and the impact of time of calving on carcass characteristics. More synchronized cows calved during the first 21 days compared to non-synchronized cows, and calves born to synchronized dams were heavier at weaning. Calves born in the first 21 days of the calving season had greater carcass weights, marblingscores, and yield grades than later born calves. In addition, the percentage of steers grading premium choice or greater and the total carcass value declined as …

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Post Weaning Management Of Heifer Calves Impacts Adg And Feed Efficiency As Pregnant Heifers, Daniel M. Larson, Tonya L. Meyer, Leslie Aaron Stalker, James R. Teichert, Richard N. Funston Jan 2010

Post Weaning Management Of Heifer Calves Impacts Adg And Feed Efficiency As Pregnant Heifers, Daniel M. Larson, Tonya L. Meyer, Leslie Aaron Stalker, James R. Teichert, Richard N. Funston

Nebraska Beef Cattle Reports

Replacement heifers were developed on cornstalks (Exp. 1, 2, and 3), dry lot (Exp. 1 and 2), or winter range (Exp. 3). In Exp. 1, pregnant heifers were individually fed during mid to late gestation. Heifers developed on cornstalks were more feed efficient than heifers developed in a dry lot. In Exp. 2 and 3, pregnant heifers grazed cornstalks during mid to late gestation. Heifers developed on cornstalks gained more and were more efficient, especially compared to heifers developed in a dry lot. These data provide evidence of an adaptive response to grazing low quality forages and may be beneficial …

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Comparison Of Revalor-Xs Vs. Two Common Implant Strategies In Finishing Steers, Cody A. Nichols, Galen E. Erickson, Judson T. Vasconcelos, Justin J. Sindt, Robert L. Botts, Bill D. Dicke, D.J. Jordon, Robert J. Cooper, Tony L. Scott, Terry J. Klopfenstein Jan 2010

Comparison Of Revalor-Xs Vs. Two Common Implant Strategies In Finishing Steers, Cody A. Nichols, Galen E. Erickson, Judson T. Vasconcelos, Justin J. Sindt, Robert L. Botts, Bill D. Dicke, D.J. Jordon, Robert J. Cooper, Tony L. Scott, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

A commercial feedlot experiment was performed to compare the effects of a Component TE-IS/TE-S with Tylan (TE-IS/S) implant strategy to a Component TE-200 with Tylan (TE-200) or a Revalor XS (Rev-XS) single implant strategy on performance and carcass characteristics of feedlot steers. Cattle receiving the TE-IS/S implants and the Rev-XS implant had greater (P < 0.05) final BW and lower F:G (P < 0.05) than the cattle that received the TE-200 treatment. Daily gain was improved (P = 0.04) when comparing TE-IS/S to TE-200, but intermediate for steers that received the Rev-XS treatment. Quality grade categories were unaffected by implant strategy. Cattle given TE-IS/TE-S had a greater number (P < 0.05) of yield grade 1 and 2 carcasses than other implant treatments, while cattle receiving TE-200 had greater (P < 0.01) yield grade 3 and 5 carcasses.

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Comparison Of Revalor Xs To A Revalor Is / Revalor S Implant Strategy In Finishing Steers, Cody A. Nichols, Galen E. Erickson, Judson Vasconcelos, Marshall N. Streeter, Bill D. Dicke, D.J. Jordon, Robert J. Cooper, Tony L. Scott, Terry J. Klopfenstein Jan 2010

Comparison Of Revalor Xs To A Revalor Is / Revalor S Implant Strategy In Finishing Steers, Cody A. Nichols, Galen E. Erickson, Judson Vasconcelos, Marshall N. Streeter, Bill D. Dicke, D.J. Jordon, Robert J. Cooper, Tony L. Scott, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

A commercial feedlot study compared effects of Revalor IS/Revalor S (RevIS-S) implant strategy to a Revalor XS (RevX) single implant strategy on performance and carcass characteristics of feedlot cattle. There were no differences (P > 0.90) in DMI, final BW, ADG, or F:G. Hot carcass weight, marbling score, 12th rib fat, LM area and calculated yield grade also were unaffected (P > 0.10) by implant strategy. The RevX treatment resulted in a greater (P < 0.01) percentage of Choice carcasses than RevIS-S. Cattle receiving Revalor XS performed similar to cattle implanted with RevIS-S using a traditional reimplant program.

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Evaluation Of A New Single Implant Strategy Vs. Two Common Implant Strategies In Beef Finishing Steers, Cody A. Nichols, Judson Vasconcelos, Galen E. Erickson, Stephanie A. Furman, Justin J. Sindt, Terry J. Klopfenstein Jan 2010

Evaluation Of A New Single Implant Strategy Vs. Two Common Implant Strategies In Beef Finishing Steers, Cody A. Nichols, Judson Vasconcelos, Galen E. Erickson, Stephanie A. Furman, Justin J. Sindt, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

A finishing trial was conducted to compare the response to three implant strategies on performance and carcasscharacteristics of feedlot steers: 1) ComponentTE-IS with Tylan followed with Component TE-S with Tylan (TE-IS/S); 2) Component TE-200 with Tylan (TE-200); or 3) Revalor XS (Rev-XS) single implant. Final BW, DMI and ADG were unaffected (P > 0.05) by implant strategy. Steers on the TE-IS/ S treatment had a lower (P < 0.01) feed:gain ratio (F:G) compared to those on the Rev-XS and TE-200 treatments. F:G calculated on a live basis was improved (P < 0.05) for reimplantedcattle compared to those on the TE-200 treatment; F:G for the Rev-XSwas intermediate. No differences (P > 0.05) were observed for HCW, 12th rib fat, percentage USDA Choice and calculated USDA yield grade among treatments. Cattle implanted with Rev-XS had greater (P < 0.05) marbling scores than those implanted with TE-IS/S. Carcasses from TE-IS/S implanted steers presented larger (P = 0.03) longissimus muscle areas than both the TE-200 and Rev-XS treatment groups. These results suggest that F:G was improved with reimplanting.

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Comparing The Energy Value Of Wet Distillers Grains To Dry Rolled Corn In High Forage Diets, Brandon L. Nuttelman, Matt K. Luebbe, Terry J. Klopfenstein, Joshua R. Benton, Galen E. Erickson Jan 2010

Comparing The Energy Value Of Wet Distillers Grains To Dry Rolled Corn In High Forage Diets, Brandon L. Nuttelman, Matt K. Luebbe, Terry J. Klopfenstein, Joshua R. Benton, Galen E. Erickson

Nebraska Beef Cattle Reports

Sixty crossbred steers were used to compare the energy value of wet distillers grains (WDGS) to dry rolled corn (DRC) in high forage diets at three levels. DRC was included at 22.0, 41.0, and 60.0% of the diet (DM), and WDGS was included at 15.0, 25.0, and 35.0% of the diet (DM). Diets were formulated to meet degradable intake protein and metabolizable protein requirements. Cattle consuming WDGS gained more than DRC cattle. Average daily gain increased with increasing levels of DRC and WDGS. The energy value of WDGS was calculated using the National Research Council model (1996). In this study, …

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Steak-Quality Meat From The Beef Heel, Siroj Pokharel, Chris R. Calkins, Amilton S. De Mello Jr., Lasika S. Senaratne, Jeremy B. Hinkle Jan 2010

Steak-Quality Meat From The Beef Heel, Siroj Pokharel, Chris R. Calkins, Amilton S. De Mello Jr., Lasika S. Senaratne, Jeremy B. Hinkle

Nebraska Beef Cattle Reports

This study was conducted to measure the shear force of beef heel (m. gastrocnemius) and to characterize the uncooked m. gastrocnemius for pH, water holding capacity, composition, and color. Ten heels were cut into steaks (for grilling) from the proximal to the distal end. Twenty additional heels were separated into lateral and medial portions; half were oven roasted and half were grilled as roasts. The proximal end steak was always less tender than the distal end steak. There were no differences in shear force between lateral and medial sides for any cooking treatment. The lateral side of heel has many …

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Vaccination To Reduce The Prevalence Of Escherichia Coli O157:H7 In Feedlot Cattle Fed Wet Distillers Grains Plus Solubles, Amy R. Rich, Ashlynn N. Jepson, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, David R. Smith, Rodney A. Moxley Jan 2010

Vaccination To Reduce The Prevalence Of Escherichia Coli O157:H7 In Feedlot Cattle Fed Wet Distillers Grains Plus Solubles, Amy R. Rich, Ashlynn N. Jepson, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, David R. Smith, Rodney A. Moxley

Nebraska Beef Cattle Reports

A clinical trial in summer of 2008 evaluated effects of feeding 0 (CONTROL) or 40% wet distillers grains plus solubles (WDGS) with and without vaccination against E. coli O157:H7 on the probability of shedding E. coli O157:H7 in the feces. No interaction (P = 0.97) was observed between vaccination and diet for E. coli O157:H7 shedding. Steers fed WDGS were 2.1 times more likely (P < 0.01) to shed E. coli O157:H7 than cattle fed CONTROL. Vaccination resulted in cattle that were 43% less likely (P < 0.01) to test positive for E. coli O157:H7 than the unvaccinated cattle.

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Supplementing Modified Wet Distillers Grains With Solubles To Long Yearling Steers Grazing Native Range, Kelsey Rolfe, Matt K. Luebbe, William A. Griffin, Terry J. Klopfenstein, Galen E. Erickson, Dennis E. Bauer Jan 2010

Supplementing Modified Wet Distillers Grains With Solubles To Long Yearling Steers Grazing Native Range, Kelsey Rolfe, Matt K. Luebbe, William A. Griffin, Terry J. Klopfenstein, Galen E. Erickson, Dennis E. Bauer

Nebraska Beef Cattle Reports

Modified wet distillers grains with solubles (MDGS) was supplemented on the ground to yearling steers with access to native range during summer grazing. Supplemented steers had greater ADG than non-supplemented steers and were heavier entering the feedlot. NRC energy equations determined that 1.0 lb supplementation of MDGS replaced 0.74 lb forage during summer grazing. Additionally, these data suggest response to MDGS may exceed response to dried distillers grains with solubles (DDGS) for gain during grazing, based on previous experiments.

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