Open Access. Powered by Scholars. Published by Universities.®
Veterinary Preventive Medicine, Epidemiology, and Public Health Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Keyword
-
- Pigs (3)
- Animal science (2)
- Disease control (2)
- Alfalfa (1)
- Animal health (1)
-
- Beef (1)
- Boars (1)
- Breeding (1)
- Buffered vinegar (1)
- Calf (1)
- Cattle (1)
- Cost benefit analysis (1)
- Cultured dextrose fermentate (1)
- EC75-219 (1)
- Economics (1)
- Extension (1)
- Extension publication (1)
- Fat (1)
- Feed (1)
- Feed additives (1)
- Feeds (1)
- G-F swine (1)
- Gilts (1)
- Housing (1)
- Meat quality (1)
- Mineral supplements (1)
- Nebraska Swine Report (1)
- Nutrition (1)
- Parasites (1)
- Peracetic acid (1)
- Publication Year
- Publication
-
- Nebraska Beef Cattle Reports (438)
- Journal of the Department of Agriculture, Western Australia, Series 4 (3)
- Department of Food Science and Technology: Dissertations, Theses, and Student Research (1)
- School of Veterinary and Biomedical Sciences: Faculty Publications (1)
- University of Nebraska-Lincoln Extension: Historical Materials (1)
- Publication Type
Articles 331 - 360 of 444
Full-Text Articles in Veterinary Preventive Medicine, Epidemiology, and Public Health
Stocking Rate Effects On Forage Nutrient Composition In Early Summer Pastures, Jared V. Judy, Jacki A. Musgrave, L. Aaron Stalker Stalker, K. H. Jenkins, Terry J. Klopfenstein
Stocking Rate Effects On Forage Nutrient Composition In Early Summer Pastures, Jared V. Judy, Jacki A. Musgrave, L. Aaron Stalker Stalker, K. H. Jenkins, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
Nebraska Sandhills upland range pastures were used to measure the effectsof stocking rate on forage nutrient content in early summer pastures. Stocked pastures had lower CP, in vitroorganic matter digestibility, forage availability, and higher NDF compared with ungrazed pastures. Clipped samples of current year growth had greater CP and in vitro organic matter digestibility than diet samples. Observed results indicate early season grazing decreasesdiet nutrient content and forage availability compared with ungrazed pastures, suggesting that cattle were consuming both current and previous year growth.
Effects Of Grazing On Nebraska Sandhills Meadow Forage Nutrient Content, Jared V. Judy, Jacki A. Musgrave, L. Aaron Stalker Stalker, Karla H. Jenkins, Terry J. Klopfenstein
Effects Of Grazing On Nebraska Sandhills Meadow Forage Nutrient Content, Jared V. Judy, Jacki A. Musgrave, L. Aaron Stalker Stalker, Karla H. Jenkins, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
Nebraska Sandhills subirrigated meadow pastures were used to measure the effects of grazing on forage nutrient content in summer pastures. Non-grazed pastures had greater diet CP content than grazed pastures early in the grazing season. By late July, grazed vs. non-grazed pastures did not differ in diet CP content. Non-grazed pastures had greater in vitro organic matter disappearance compared with grazed pastures from late July through September; however, early summer pastures were not affected. Observed results indicate the greatest differences in nutrient content between grazed and non-grazed meadow pastures occur early and late in the grazing season when the majority …
Dried Distillers Grains Supplementation Of Calves Grazing Irrigated Corn Residue, Mandi Jones, James C. Macdonald, Galen E. Erickson Erickson, Terry J. Klopfenstein, Robby Bondurant
Dried Distillers Grains Supplementation Of Calves Grazing Irrigated Corn Residue, Mandi Jones, James C. Macdonald, Galen E. Erickson Erickson, Terry J. Klopfenstein, Robby Bondurant
Nebraska Beef Cattle Reports
Steer calves grazing irrigated corn residue received supplementation of dried distillers grains plus solubles (DGS) at 0.3, 0.5, 0.7, 0.9, or 1.1% of body weight. Steers were individually supplemented daily through Calan gates. Daily gain improved linearly (0.77 lb/head/day to 2.21 lb/head/day) with increasing supplementation (1.5 lb/day to 7 lb/day). Supplementing DGS to calves grazing corn residue increased gain during the winter period.
Evaluation Of Changes In Nutritional Quality Of Corn Residue Over Time, Mandi Jones, James C. Macdonald, Terry J. Klopfenstein Klopfenstein, Galen E. Erickson, Keith Glewen, Andrea K. Watson
Evaluation Of Changes In Nutritional Quality Of Corn Residue Over Time, Mandi Jones, James C. Macdonald, Terry J. Klopfenstein Klopfenstein, Galen E. Erickson, Keith Glewen, Andrea K. Watson
Nebraska Beef Cattle Reports
Irrigated corn residue was sampled across time in order to determine changes in quality and proportion of corn residue as the plant dried and was exposed to effects of weathering. Corn plants from two hybrids were planted on two different planting dates and harvested at periodic intervals from August 2012 to December 2012. Proportions of stem, blade/sheath, husk/shank, and cob made up smaller components of total plant DM as it matured, with the largest relative reduction occurring in the blade/sheath or stem. Hybrid impacted TDN values primarily because the 119 day hybrid was less mature at the early sampling dates.
Comparison Of Commercial Lick Tubs To Distillers Grains Supplementation For Calves Grazing Corn Residue, Mandi Jones, James C. Macdonald, Galen E. Erickson Erickson, Terry J. Klopfenstein, Kathleen R. Brooks, Dirk B. Burken, Robby Bondurant, Andrea K. Watson
Comparison Of Commercial Lick Tubs To Distillers Grains Supplementation For Calves Grazing Corn Residue, Mandi Jones, James C. Macdonald, Galen E. Erickson Erickson, Terry J. Klopfenstein, Kathleen R. Brooks, Dirk B. Burken, Robby Bondurant, Andrea K. Watson
Nebraska Beef Cattle Reports
Steer calves grazing irrigated corn residue were supplemented dried distillers grains plus solubles (DGS) or allowedcontinuous access to a commercial lick tub. Dried DGS was fed at 2.94 lb/steer/day and the lick tubs were consumed at 2.04 lb/steer/day (DM basis). Gain was greater for cattle supplemented with dried DGS (1.36 lb/day) compared to those with access to lick tubs (0.83 lb/day). Supplement efficiency varied between calves receiving dried DGS (46%) and those with continuous access to the lick tub (43%) when expressed on a DM basis. Values for dried DGS supplementation (48%) were not different for supplement efficiencyon an OM …
Efficacy Of Bovatec 2.2 Mineral Blocks For Cattle Grazing Crested Wheatgrass Pastures, Karla H. Jenkins, Jacob A. Hansen, Matt K. Luebbe Luebbe
Efficacy Of Bovatec 2.2 Mineral Blocks For Cattle Grazing Crested Wheatgrass Pastures, Karla H. Jenkins, Jacob A. Hansen, Matt K. Luebbe Luebbe
Nebraska Beef Cattle Reports
A grazing study was conducted to determine if providing Bovatec® in a trace mineralized salt block would improve cattle performance over cattle provided a trace mineralized salt block without an ionophore while maintaining block consumption below 2 oz/head/day. Average daily block intake was 1.40 and 1.25 oz/day for the Bovatec and control cattle, respectively. Lasalocid consumption was 193 mg/head/day. Although cattle consuming the Bovatec block gained 5% more than the control cattle, this was not significant (1.75 vs 1.67 lb/day, respectively). Supplying an ionophore through a self-feeding block may not improve gain compared to supplying mineral alone in a self-feeding …
Effect Of Distillers Grains Plus Solubles And Monensin Supplementation On Grazing Steers, Tyler L. Hasenauer, Terry J. Klopfenstein, James C. Macdonald Donald, Robby G. Bondurant, Dirk B. Burken
Effect Of Distillers Grains Plus Solubles And Monensin Supplementation On Grazing Steers, Tyler L. Hasenauer, Terry J. Klopfenstein, James C. Macdonald Donald, Robby G. Bondurant, Dirk B. Burken
Nebraska Beef Cattle Reports
Yearling steers rotationally grazing smooth bromegrass were individually supplemented monensin at 0 or 200 mg with modified distillers grains plus solubles (MDGS) at .05, 0.4, 0.6, and 0.8% BW. Cannulated steers continuously grazing smooth bromegrass were assigned randomly to one of two treatments: 0.4% BW MDGS supplementation with 0 or 200 mg monensin. Monensin did not affect ADG of steers supplemented MDGS ≥ 0.4% BW. Steers supplemented with monensin had a decreasein estimated average forage intakefrom 16.16 lb to 14.75 lb/OM daily.
Effects Of Processing Treated Corn Stover And Distillers Grains On Performance Of Growing Cattle, Jana L. Harding, Curtis J. Bittner, Dirk B. Burken Burken, Galen E. Erickson, James C. Macdonald
Effects Of Processing Treated Corn Stover And Distillers Grains On Performance Of Growing Cattle, Jana L. Harding, Curtis J. Bittner, Dirk B. Burken Burken, Galen E. Erickson, James C. Macdonald
Nebraska Beef Cattle Reports
A study evaluated the effects of replacinga diet consisting of 60% corn stover, 18% solubles, and 18% distillers grains with a complete pelleted feed containing calcium oxide (CaO) treated corn stover and distillers grains on growing cattle performance. The pelleted feed was either pair-fed to the control treatment or fed ad libitum. There were no differences in ending BW, ADG, or F:G between the control and pair-fed treatment. Feeding the pellet ad libitum resulted in greater DMI and ADG; however, the cattle had greater F:G. The pellet has 98% the feeding value of the control treatment.
Using Enspira To Improve Fiber Digestion, Jana L. Harding, Adam L. Shreck, Melissa L. Jolly-Breithaupt Breithaupt, Galen E. Erickson, James C. Macdonald
Using Enspira To Improve Fiber Digestion, Jana L. Harding, Adam L. Shreck, Melissa L. Jolly-Breithaupt Breithaupt, Galen E. Erickson, James C. Macdonald
Nebraska Beef Cattle Reports
A metabolism study was conducted to evaluate the effects of supplementing a fibrolytic enzyme (Enspira™) on total tract digestion of a finishing diet. In situ NDF digestibilities of the corn bran, HMC, corn residue, and corn silage were not different between the treatments. Rate of digestion of the corn residue and corn silage was lower for the enzyme treatment compared to the control. Averageruminal pH was not significantly different between the two treatments. Correspondingly, there was no difference in VFA profile. There were no differences in DM, OM, NDF, ADF, or hemicellulose digestibilities between the control and enzyme treatment.
Effects Of Replacing Corn With A Pelleted Treated Corn Stover And Distillers Grains On Performance Of Finishing Cattle, Jana L. Harding, Curtis J. Bittner, Dirk B. Burken Burken, Galen E. Erickson, James C. Macdonald
Effects Of Replacing Corn With A Pelleted Treated Corn Stover And Distillers Grains On Performance Of Finishing Cattle, Jana L. Harding, Curtis J. Bittner, Dirk B. Burken Burken, Galen E. Erickson, James C. Macdonald
Nebraska Beef Cattle Reports
A finishing study evaluated the effectsof replacing 10, 20, or 30% corn (DM basis) with pelleted treated corn stover and distillers grains in a diet containing either 20 or 40% modified distillers grains plus solubles (MDGS) on finishing cattle performance. Steers consuming 10, 20, or 30% of the pelleted feed with 40% MDGS had equal or similar performance to the control diet with 40% MDGS. Cattle consuming 10% pelleted feed with 20% MDGS had similar efficiencies as the control diet; however, feeding the pellet at 20 or 30% of the diet DM with 20% MDGS decreased feed efficiency.
Effects Of Replacing Corn With A Pelleted Treated Corn Stover And Distillers Grains On Intake And Total Tract Digestibility Of Finishing Diets, Jana L. Harding, Melissa L. Jolly-Breithaupt, Galen E. Erickson Erickson, James C. Macdonald
Effects Of Replacing Corn With A Pelleted Treated Corn Stover And Distillers Grains On Intake And Total Tract Digestibility Of Finishing Diets, Jana L. Harding, Melissa L. Jolly-Breithaupt, Galen E. Erickson Erickson, James C. Macdonald
Nebraska Beef Cattle Reports
A digestion study was conducted to evaluate the effects of replacing dry-rolled corn (DRC) with a pelleted feed containing treated corn stover, solubles, and distillers grains (DDG). Replacing DRC with the pelleted feed had no effect on intakes. Similarly, total tract digestibilities of DM, OM, or NDF were not affected by dietary treatment. There was a tendency for differences in average ruminalpH between treatments; however, proportions of acetate, propionate, and butyrate were not impacted. It was concluded that the DRC could be replacedwith a pelleted stover and distillers in the finishing diet without altering total tract digestion.
Effect Of Corn Residue Removal On Subsequent Crop Yields, Mary E. Drewnoski, L. Aaron Stalker, James C. Macdonald Donald, Galen E. Erickson, Kathy J. Hanford, Terry J. Klopfenstein
Effect Of Corn Residue Removal On Subsequent Crop Yields, Mary E. Drewnoski, L. Aaron Stalker, James C. Macdonald Donald, Galen E. Erickson, Kathy J. Hanford, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
Two studies were conducted to evaluate the effects of corn residue harvest on subsequent crop yields. In a long-term study (16 years), cattle grazing corn residue in the spring (February to the middle of April) or the fall (November through January) slightly improved subsequent soybean yields and had no effect on corn yields in an irrigated field maintained in an annual corn-soybean rotation at Mead, Neb. In a five-year study, fall grazing (December through January) or baling of corn residue had no effect on subsequent corn grain yields in a field maintained in continuous corn production at Brule, Neb. These …
Effect Of Feeding Distillers Grains In Different Phases Of Production On The Fatty Acid Profile And Oxidation Of Frozen, Cooked Beef Links, Brandy D. Cleveland, Amy L. Redfield, James C. Macdonald Donald, Tommi F. Jones, Gary A. Sullivan
Effect Of Feeding Distillers Grains In Different Phases Of Production On The Fatty Acid Profile And Oxidation Of Frozen, Cooked Beef Links, Brandy D. Cleveland, Amy L. Redfield, James C. Macdonald Donald, Tommi F. Jones, Gary A. Sullivan
Nebraska Beef Cattle Reports
Lipid oxidation of cooked ground beef links made from cattle fed different diets and with different concentrations of added natural antioxidants was compared to evaluate product shelf life. Fatty acid composition was analyzed on raw lean, composite, and fat portions from each shoulder clod. Samples without antioxidants were the most oxidized, with no differences between other antioxidant concentrations throughout frozen storage. An increase in polyunsaturated fatty acids was found in beef when finished on modified distillers grains but did not result in increased oxidation. Therefore, the addition of natural antioxidants was effective at reducing oxidative rancidity regardless of animal diet.
A Basic Mechanism Of Beef Tenderization: Feeding Wet Distillers Grains Plus Solubles Contributes To Sarcoplasmic Reticulum Membrane Instability, Michael D. Chao, Katherine I. Domenech, Chris R. Calkins Calkins
A Basic Mechanism Of Beef Tenderization: Feeding Wet Distillers Grains Plus Solubles Contributes To Sarcoplasmic Reticulum Membrane Instability, Michael D. Chao, Katherine I. Domenech, Chris R. Calkins Calkins
Nebraska Beef Cattle Reports
Feeding wet distillers grains plus solubles (WDGS) could increase polyunsaturated fatty acid (PUFA) concentration in the sarcoplasmic reticulum (SR) membrane, thereby altering membrane integrity, resulting in more rapid post-rigor calcium leakage, greater enzyme activity and improved tenderness. Steers were finished on either 0% WDGS or 50% WDGS. Steaks from steers fed WDGS were more tender and had greater free calcium concentrations. Feeding WDGS also increased proportions of PUFA in SR membrane and altered SR lipid and phospholipid profiles. These findings suggest that feeding increased concentrations of WDGS in the finishing diet can possibly increase meat tenderness through the proposed mechanism.
Feeding Elevated Levels Of Corn Silage And Mdgs In Finishing Diets, Dirk B. Burken, Brandon L. Nuttelman, Curtis J. Bittner Bittner, Terry J. Klopfenstein, Galen E. Erickson
Feeding Elevated Levels Of Corn Silage And Mdgs In Finishing Diets, Dirk B. Burken, Brandon L. Nuttelman, Curtis J. Bittner Bittner, Terry J. Klopfenstein, Galen E. Erickson
Nebraska Beef Cattle Reports
A finishing experiment evaluated substitution of corn silage and modified distillers grains with solubles (MDGS) in place of corn. The experimental arrangementwas a 2 X 2 + 1 factorial with diets containing 15 or 45% corn silage and 20 or 40% MDGS as well as a control containing 5% cornstalks and 40% MDGS. There were no interactions between corn silage and MDGS inclusion for carcass adjusted performance. As corn silage inclusion increased in the diet, there was a modest reduction in ADG and an increase in F:G. When MDGS inclusion was increased, ADG and F:G were improved. Cattle fed 40% …
The Effects Of Corn Price, Shrink, And Harvest Moisture On Corn Silage Economics, Dirk B. Burken, Terry J. Klopfenstein, Galen E. Erickson Erickson
The Effects Of Corn Price, Shrink, And Harvest Moisture On Corn Silage Economics, Dirk B. Burken, Terry J. Klopfenstein, Galen E. Erickson Erickson
Nebraska Beef Cattle Reports
Economic assumptions were applied to corn production to set corn silage prices for breakeven corn production, whether harvested for corn grain or corn silage. Price levels were used for the calculation of returns per finished steer as corn silage inclusion increased in finishing diets containing distillers grains. As corn price increased, the economics of feeding elevated concentrations of corn silage became more favorable. The economic importance of shrink and harvest moisture content were assessed. As corn price increases and the inclusion of corn silage increases, corn silage management decisions have greater economic importance.
Digestibility Of De-Oiled Modified Distillers Grains Plus Solubles In Forage-Based Diets, Meredith L. Bremer, Sarah J. Peterson, Adam L. Shreck Shreck, Galen E. Erickson, Terry J. Klopfenstein, James C. Macdonald
Digestibility Of De-Oiled Modified Distillers Grains Plus Solubles In Forage-Based Diets, Meredith L. Bremer, Sarah J. Peterson, Adam L. Shreck Shreck, Galen E. Erickson, Terry J. Klopfenstein, James C. Macdonald
Nebraska Beef Cattle Reports
Over half of Nebraska’s ethanol plants are removing oil from distillers grains via centrifugation of the thin stillage constituent. Removing oil by this method does not impact intake or total tract digestibility in beef cattle growing diets. However, increasing the concentration of de-oiled distillers grains in the diet significantly improved intake and digestibility. Thus, concentration of distillers grain in the diet has a greater impact on total tract digestibility than the fat content in forage-based diets.
Feeding Value Of De-Oiled Wet Distillers Grains Plus Solubles Relative To Normal When Fed With Either Dry-Rolled Corn Or Steam-Flaked Corn In Beef Finishing Diets, Meredith L. Bremer, Marie E. Harris, Jake A. Hansen Hansen, Karla H. Jenkins, Matt K. Luebbe, Galen E. Erickson
Feeding Value Of De-Oiled Wet Distillers Grains Plus Solubles Relative To Normal When Fed With Either Dry-Rolled Corn Or Steam-Flaked Corn In Beef Finishing Diets, Meredith L. Bremer, Marie E. Harris, Jake A. Hansen Hansen, Karla H. Jenkins, Matt K. Luebbe, Galen E. Erickson
Nebraska Beef Cattle Reports
A 128-day finishing study utilized 328 yearling steers to determine the effects of feeding de-oiled wet distillers grains plus solubles (WDGS) in dry rolled corn (DRC) or steam-flaked corn (SFC) diets relative to normal fat WDGS. No significant interactions were observed, but cattle fed DRC had greater DMI and were less efficient than those consuming SFC. Linear improvements in ADG and F:G were observed as concentration of de-oiled WDGS increased from 0 to 35%. Numerically cattle fed normal WDGS were more efficient than cattle fed de-oiled WDGS.
Response To Increasing Concentrations Of De-Oiled Modified Distillers Grains Plus Solubles In Beef Feedlot Diets, Meredith L. Bremer, Curtis J. Bittner, Dirk B. Burken Burken, Galen E. Erickson, James C. Macdonald
Response To Increasing Concentrations Of De-Oiled Modified Distillers Grains Plus Solubles In Beef Feedlot Diets, Meredith L. Bremer, Curtis J. Bittner, Dirk B. Burken Burken, Galen E. Erickson, James C. Macdonald
Nebraska Beef Cattle Reports
A 154-day finishing study, utilizing 378 calf-fed steers, was conducted to evaluate the response to feeding increasing concentrations of de-oiled modified distillers grains plus solubles (MDGS) on cattle performance and carcass characteristics. Two additional diets were fed to compare de-oiled MDGS to normal MDGS at either 15 or 30% inclusion. Increasing concentration of de-oiled MDGS in the diet resulted in a linear improvement in F:G. When comparing 30% de-oiled to normal MDGS, there was a tendency for 3.4% improvement in F:G for cattle fed normal MDGS diets over those fed de-oiled MDGS.
Effect Of 300 Or 400 Mg Daily Of Ractopamine Hydrochloride On Growth Performance And Carcass Characteristics Of Finishing Steers During The Last 14, 28, Or 42 Days, Curtis J. Bittner, Dirk B. Burken, Adam L. Shreck Shreck, James C. Macdonald, Galen E. Erickson, Nathan A. Pyatt
Effect Of 300 Or 400 Mg Daily Of Ractopamine Hydrochloride On Growth Performance And Carcass Characteristics Of Finishing Steers During The Last 14, 28, Or 42 Days, Curtis J. Bittner, Dirk B. Burken, Adam L. Shreck Shreck, James C. Macdonald, Galen E. Erickson, Nathan A. Pyatt
Nebraska Beef Cattle Reports
The effects of ractopamine hydrochloride (Optaflexx®) dosage (0, 300, and 400 mg/head/day) and duration (14, 28, or 42 days) on growth performance were evaluated in feedlot finishing diets. Feeding 300 mg of Optaflexx for 28 or 42 days increased live final BW by 13 and 29 lb, while feeding Optaflexx at 400 mg resulted in 27 or 24 lb increases relative to 0 mg steers, respectively. Feeding 300 mg of Optaflexx for 28 or 42 days would suggest 11.1 or 16.6 lb improvements in HCW, while feeding 400 mg of Optaflexx would suggest 19.7 or 20.7 lb heavier carcasses compared …
Genetic Parameter Estimates For Calving Difficulty And Birth Weight In A Multibreed Population, Cashley M. Ahlberg, Larry A. Kuehn, R. Mark Thallman Thallman, Stephen D. Kachman, Matthew L. Spangler
Genetic Parameter Estimates For Calving Difficulty And Birth Weight In A Multibreed Population, Cashley M. Ahlberg, Larry A. Kuehn, R. Mark Thallman Thallman, Stephen D. Kachman, Matthew L. Spangler
Nebraska Beef Cattle Reports
Eighteen breeds were utilized to estimate genetic parameters for birth weight and calving difficulty on first-parity females. Birth weight and calving difficulty were moderately heritable allowing for genetic selection to decrease calving difficulty. Genetic correlation estimates were positive between direct effects for birth weight and calving difficulty. This work will serve as the foundation for estimating across-breed EPD for calving difficulty in the U.S.
Comparison Of Wet Or Dry Distillers Grains Plus Solubles To Corn As An Energy Source In Forage-Based Diets, Nerissa A. Ahern, Brandon L. Nuttelman, Terry J. Klopfenstein Klopfenstein, James C. Macdonald, Galen E. Erickson
Comparison Of Wet Or Dry Distillers Grains Plus Solubles To Corn As An Energy Source In Forage-Based Diets, Nerissa A. Ahern, Brandon L. Nuttelman, Terry J. Klopfenstein Klopfenstein, James C. Macdonald, Galen E. Erickson
Nebraska Beef Cattle Reports
Four experiments were conducted comparing wet or dry distillers grains plus solubles to each other or to corn as an energy source in forage-based diets. Diets included dry distillers grains plus solubles, wet distillers grains plus solubles or dry-rolled corn, with sorghum silage, grass hay and supplement. Data were pooled to generate ADG at differing inclusions allowing energy value of wet distillers grains plus solubles to be calculated relative to dry-rolled corn. The energy value of distillers grains plus solubles fed at 15% of diet DM was 137% and fed at 30% of the diet DM was 136% relative to …
Effect Of Harvest Method On In Vitro Digestibility Of Corn Residues, Janessa J. Updike, Jana L. Harding, Terry J. Klopfenstein Klopfenstein, James C. Macdonald
Effect Of Harvest Method On In Vitro Digestibility Of Corn Residues, Janessa J. Updike, Jana L. Harding, Terry J. Klopfenstein Klopfenstein, James C. Macdonald
Nebraska Beef Cattle Reports
New corn residue harvesting methods were evaluated to determine the impacts of altering the proportions of plant part that are composed in a round bale. In vitro techniques were used to assess the organic matter digestibility of corn residue bale harvested with different proportions of stalks, leaves, and husk. As husk comprised a greater proportion of the bale, digestibility appeared to increase when compared with a conventional bale of cornstalks.
Glucose Significantly Enhances Enterotoxigenic Escherichia Coli Adherence To Intestinal Epithelial Cells Through Its Effects On Heat-Labile Enterotoxin Production, Prageeth Wijemanne, Rodney A. Moxley
Glucose Significantly Enhances Enterotoxigenic Escherichia Coli Adherence To Intestinal Epithelial Cells Through Its Effects On Heat-Labile Enterotoxin Production, Prageeth Wijemanne, Rodney A. Moxley
School of Veterinary and Biomedical Sciences: Faculty Publications
The present study tested whether exposure of enterotoxigenic Escherichia coli (ETEC) to glucose at different concentrations in the media results in increased bacterial adherence to host cells through increased heat-labile enterotoxin (LT) production, thereby suggesting the effects are physiological. Porcine-origin ETEC strains grown in Casamino acid yeast extract medium containing different concentrations of glucose were washed and inoculated onto IPEC-J2 porcine intestinal epithelial cells to test for effects on adherence and host cell cAMP concentrations. Consistent with previous studies, all LT+ strains had higher ETEC adherence to IPEC-J2 cells than did LT2 strains. Adherence of the LT2 but not the …
Transitioning Cattle From Ramp® To A Finishing Diet On Feed Intake And Ruminal Ph, Cody J. Schneider, Adam L. Shreck, Terry J. Klopfenstein Klopfenstein, Galen E. Erickson
Transitioning Cattle From Ramp® To A Finishing Diet On Feed Intake And Ruminal Ph, Cody J. Schneider, Adam L. Shreck, Terry J. Klopfenstein Klopfenstein, Galen E. Erickson
Nebraska Beef Cattle Reports
A metabolism trial was conducted where steers were adapted to high grain diets using a traditional approach or one of two RAMP® adaptation programs. RAMP programs adapted cattle to a finishing diet either gradually over 28 days in four steps or switched to a finishing ration without steps. Feed intake and ruminal pH were monitored continuously throughout the trial. Cattle on the 4-STEP treatment spent more time eating compared to other treatments but total feed consumption was similar among treatments. Ruminal pH was greater for cattle on RAMP adaptation programs when compared to traditional grain adaptation. Cattle fed RAMP …
The Effects Of Diet And Cooler Aging On Specific Flavor Notes In Beef, Kimberly A. Varnold, Chris R. Calkins, Rhonda K. Miller Miller, Galen E. Erickson
The Effects Of Diet And Cooler Aging On Specific Flavor Notes In Beef, Kimberly A. Varnold, Chris R. Calkins, Rhonda K. Miller Miller, Galen E. Erickson
Nebraska Beef Cattle Reports
Crossbred steers (n = 64) were grazed on warm- or cool-season grass-dominated pastures, without or with energy supplementation of wet distillers grains with solubles (WDGS), and were finished on a corn-based diet with or without 35% WDGS. Finishing on corn increased desirable flavor notes and decreasedundesirable flavor notes in both L. dorsi and B. femoris steaks. In addition, grazing on warm-season grasses increased the prevalence of undesirable flavors but was often dissipated by the addition WDGS supplementation. Longer aging periods tended to increase the prevalence of undesirable flavors, especially in B. femoris steaks. It is recommended producers provide WDGS supplementation, …
Evaluation Of Genomic Predictors For Red Angus Cattle, Stephen D. Kachman, Matthew L. Spangler
Evaluation Of Genomic Predictors For Red Angus Cattle, Stephen D. Kachman, Matthew L. Spangler
Nebraska Beef Cattle Reports
Purebred Red Angus genotypes, via the Ilumina BovineSNP50 assay, and expected progeny differences (EPD) were used to evaluate the accuracy of genomic predictors for traits that are currently reportedthrough the American Red AngusAssociations’ National Cattle Evaluation. Two genomic predictors were evaluated, one derived using prediction equations from the National Beef Cattle Evaluation Consortium and the other from Zoetis.
Follicular Vascular Endothelial Growth Factor A Expression Before And After The Lh Surge, Renee M. Mcfee, Robin A. Artac, Adam F. Summers, William E. Pohlmeier, Vanessa M. Brauer, Scott G. Kurz, Robert A. Cushman, Jennifer R. Wood, Andrea S. Cupp
Follicular Vascular Endothelial Growth Factor A Expression Before And After The Lh Surge, Renee M. Mcfee, Robin A. Artac, Adam F. Summers, William E. Pohlmeier, Vanessa M. Brauer, Scott G. Kurz, Robert A. Cushman, Jennifer R. Wood, Andrea S. Cupp
Nebraska Beef Cattle Reports
Granulosa cell expression of VEGFAisoforms in dominant bovine follicles was evaluated. Collection of granulosa cells via follicle aspiration revealed altered expression of the proangiogenic VEGFA_164 isoform but not the antiangiogenic VEGFA_164B isoform prior to and after the LH surge. Expression of VEGFA_164 declines as both the LH surge and ovulation approaches. In addition, VEGFA_164 and VEGFA_164B expression prior to the LH surge was positively correlated with FSHR and CYP19A1 expression, suggesting that VEGFA expression may be regulated by FSH. These data indicate differential expression of VEGFA isoforms may be an important feature of bovine dominant follicle development.
Androgen Excess In Beef Cows Results In Altered Theca Cell Gene Expression And Fertilityand, Adam F. Summers, William E. Pohlmeier, Vanessa M. Brauer Brauer, Kevin M. Sargent, Renee M. Mcfee, Scott G. Kurz, Robert A. Cushman, Jennifer R. Wood, Andrea S. Cupp
Androgen Excess In Beef Cows Results In Altered Theca Cell Gene Expression And Fertilityand, Adam F. Summers, William E. Pohlmeier, Vanessa M. Brauer Brauer, Kevin M. Sargent, Renee M. Mcfee, Scott G. Kurz, Robert A. Cushman, Jennifer R. Wood, Andrea S. Cupp
Nebraska Beef Cattle Reports
Within the University of Nebraska–Lincoln physiology herd, two sub-populations of cows with different concentrations of androstenedione have been identified. Androstenedione is a precursor for estradiol production, and androstenedione concentration is increased 24.5-fold in the high androstenedione cows. Our objective was to determine the cause of increased androstenedione production in high androstenedione cows and the effects on theca cell and oocyte gene expression. High androstenedione cows had increased steroidogenic enzyme abundance in theca cells and altered oocyte mRNA abundance. Increased androgen production in high androstenedione cows is associated with altered gene expression and/or mRNA stability during oocyte growth and maturation, which …
Comparison Of Long-Term Progestin-Based Synchronization Protocols On Fixed-Time Ai Pregnancy Rate In Beef Heifers, Rebecca A. Vraspir, Adam F. Summers, Doug O'Hare Hare, Larry D. Rowden, Rick N. Funston
Comparison Of Long-Term Progestin-Based Synchronization Protocols On Fixed-Time Ai Pregnancy Rate In Beef Heifers, Rebecca A. Vraspir, Adam F. Summers, Doug O'Hare Hare, Larry D. Rowden, Rick N. Funston
Nebraska Beef Cattle Reports
Yearling Angus heifers at a commercial ranch in the Nebraska Sandhills were randomly assigned to one of two progestin-based fixed-time AI protocols (MGA or 14-day CIDR) to compare pregnancy rates. Heifers had similar fixed-time AI pregnancy rates between MGA and 14-day CIDR. A similar proportion of MGA and 14-day CIDR heifers displayed a second estrus; however, heifers previously synchronized with MGA tended to have a greater second AI pregnancy rate. Overall pregnancy rate was similar between MGA and 14-day CIDR treatments. The MGA system was the more cost effective synchronization protocol in this study.