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Full-Text Articles in Animal Sciences
Effect Of Estrus Synchronization With A Single Injection Of Prostaglandin During Natural Service Mating, Daniel Larson, Jacqueline A. Musgrave, Richard N. Funston
Effect Of Estrus Synchronization With A Single Injection Of Prostaglandin During Natural Service Mating, Daniel Larson, Jacqueline A. Musgrave, Richard N. Funston
Nebraska Beef Cattle Reports
Records from unsynchronized cows (n = 2073; 60-day breeding season) were compared with records from synchronized cows (n = 517; 45-day breeding season) collected between 2000 and 2006. A single injection of prostaglandin F2α was administered approximately 108 hours after bull turn-in to synchronize estrus in spring calving mature beef cows. Estrus synchronization increased the percentage of cows calving in the first 21 days without affecting pregnancy rates. However, weaning BW of calves was not significantly different. Estrus synchronization improves synchrony of calving in a shorter breeding season with similar overall pregnancy rates.
The Effects On Ruminal Ph, Feed Intake And Digestibility When Using Wet Corn Gluten Feed To Adapt Cattle To Finishing Diets, Taia Huls, Nathan Meyer, Galen E. Erickson, Terry J. Klopfenstein, Rick Stock
The Effects On Ruminal Ph, Feed Intake And Digestibility When Using Wet Corn Gluten Feed To Adapt Cattle To Finishing Diets, Taia Huls, Nathan Meyer, Galen E. Erickson, Terry J. Klopfenstein, Rick Stock
Nebraska Beef Cattle Reports
A 33-day grain adaptation trial was conducted comparing wet corn gluten feed (WCGF; Sweet Bran®, Cargill) fed at decreasing levels (87.5% to 35%) to a traditional grain adaptation with decreasing forage (45% to 7.5%; CON) to test the effects on ruminal pH, dry matter intake (DMI) and in situ DM digestibility. Steers adapted by decreasing WCGF had greater DMI than CON (P < 0.01). During adaptation, DMI increased and ruminal pH decreased across both treatments. Steers adapted using WCGF had greater in situ DM digestion than steers adapted using CON. Diets containing WCGF had greater DM digestibility than diets containing forage, whether incubated in either CON or WCGF fed steers. Decreasing WCGF inclusion instead of forage is a viable method for adapting feedlot cattle to high-concentrate diets.
Sulfur In Distillers Grains, Sarah Vanness, Terry J. Klopfenstein, Galen E. Erickson, Kip Karges
Sulfur In Distillers Grains, Sarah Vanness, Terry J. Klopfenstein, Galen E. Erickson, Kip Karges
Nebraska Beef Cattle Reports
Data were compiled from 4,143 cattle on byproduct feeding experiments. Incidence of polioencephalomalacia was small (0.14%) in diets containing 0.46% or less sulfur (S). Incidences of polioencephalomalacia increased when cattle were fed diets above 0.46% S and especially above 0.56%. Phosphoric acid successfully replaced sulfuric acid in ethanol fermentation, but the amount and cost of phosphoric acid likely limit the economic feasibility of its use.
Profit Variability For Calf-Fed And Yearling Production Systems, Rebecca Small, Darrell R. Mark, Dillon Feuz, Terry J. Klopfenstein, William Griffin, Daniel R. Adams
Profit Variability For Calf-Fed And Yearling Production Systems, Rebecca Small, Darrell R. Mark, Dillon Feuz, Terry J. Klopfenstein, William Griffin, Daniel R. Adams
Nebraska Beef Cattle Reports
Profitability of calf-fed and backgrounding yearling systems was determined based on actual production data and prices from 1996 to 2007, and variability across years was compared. The two systems exhibited similar profits, on average, but the calf-fed system showed less profit variability, suggesting there is more risk inherent in a yearling backgrounding and finishing system. Also, profitable years were more apt to have less variable corn prices.
Effect Of Pre-Breeding Weight And Mga Supplementation On Heifer Performance, Jeremy L. Martin, Kelly W. Creighton, Jacqueline A. Musgrave, Terry J. Klopfenstein, Richard T. Clark, Don C. Adams, Richard N. Funston
Effect Of Pre-Breeding Weight And Mga Supplementation On Heifer Performance, Jeremy L. Martin, Kelly W. Creighton, Jacqueline A. Musgrave, Terry J. Klopfenstein, Richard T. Clark, Don C. Adams, Richard N. Funston
Nebraska Beef Cattle Reports
Developing heifers to reach a target weight of 50% of mature body weight at the beginning of the breeding season is an effective method for reducing heifer development cost. Net costs to produce a bred yearling heifer and 2-year-old cow were lower when heifers were developed to 50% rather than 55% of mature body weight, regardless of breeding season length. Administration of oral progestin to heifers developed to 50% mature body weight prior to breeding did not affect reproductive performance during the first breeding season when heifers were exposed to bulls 13 days after the end of progestin treatment.
Effect Of Wintering System And Nutrition Around Breeding On Gain And Reproduction In Heifers, Daniel M. Larson, Jeremy L. Martin, Richard N. Funston
Effect Of Wintering System And Nutrition Around Breeding On Gain And Reproduction In Heifers, Daniel M. Larson, Jeremy L. Martin, Richard N. Funston
Nebraska Beef Cattle Reports
Replacement heifers were developed using corn stalks (Experiments 1 and 2), winter range (Experiment 1), or a dry lot (Experiment 2) with or without a high energy supplement around breeding. Corn stalk development reduced ADG and the percentage pubertal prior to breeding; however, neither first service conception nor pregnancy rates were affected. High energy supplemental nutrition around breeding tends to improve first service conception. Corn stalk development does not appear to negatively impact reproduction, although it resulted in lighter calf birth weight compared to winter range.
Pre And Peri-Pubertal Feeding Of Melengesterol Acetate (Mga) Alters Testis Characteristics In Bulls, Racheal G. Slattery, Shantille G. Kruse, Jeremy L. Martin, Michelle M. Baltes-Breitwisch, Debra T. Clopton, Karl V. Moline, Jeffrey W. Bergman, Andrea S. Cupp
Pre And Peri-Pubertal Feeding Of Melengesterol Acetate (Mga) Alters Testis Characteristics In Bulls, Racheal G. Slattery, Shantille G. Kruse, Jeremy L. Martin, Michelle M. Baltes-Breitwisch, Debra T. Clopton, Karl V. Moline, Jeffrey W. Bergman, Andrea S. Cupp
Nebraska Beef Cattle Reports
Bulls were fed 1 mg/head/day of MGA from 5.5 to 6.5 months ; 6.5 to 9; or fed a control diet. Body weight, scrotal circumference, combined testis weight, testis composition, and testosterone concentration were measured. Feeding MGA prior to puberty increased scrotal circumference and decreased testosterone concentration at 12 months compared to controls. Thus, feeding MGA prior to puberty can alter testis characteristics in bulls.
Nebraska Beef Cattle Report 2008
Nebraska Beef Cattle Report 2008
Nebraska Beef Cattle Reports
Contents
Cow/Calf
Effect of Pre-breeding Weight and MGA Supplementation on Heifer Performance
Effect of Wintering System and Nutrition Around Breeding on Gain and Reproduction in Heifers
Pre- and Peri-pubertal Feeding of Melengesterol Acetate (MGA) Alters Testis Characteristics in Bulls
Effects of Summer Climatic Conditions on Body Temperature in Beef Cows
Supplementing Beef Cows Grazing Cornstalk Residue with a Distillers Based Cube
Comparison of Crude Protein and Digestibility of Diets of Grazing Cattle at Different Sandhills Range Sites
Determination of Diet Protein and Digestibility of Native Sandhills Upland Range
Evaluation of Storage Methods for Wet Distillers Grains Plus Solubles with Added …
Effects Of Summer Climatic Conditions On Body Temperature In Beef Cows, Darci A. Mcgee, Richard J. Rasby, Merlyn K. Nielsen, Terry L. Mader
Effects Of Summer Climatic Conditions On Body Temperature In Beef Cows, Darci A. Mcgee, Richard J. Rasby, Merlyn K. Nielsen, Terry L. Mader
Nebraska Beef Cattle Reports
Tympanic and vaginal temperature logging devices were used to collect internal body temperature in three trials using mature nonpregnant beef cows. A model was developed to predict daily patterns for internal body temperature of a cow as a function of ambient temperature. Panting scores were recorded and differed across days as cows experienced changes in ambient temperature and humidity. Vaginal and tympanic temperatures were positively correlated, thus tympanic temperature may be used to predict internal body temperature of cows.
Supplementing Beef Cows Grazing Cornstalk Residue With A Distillers Based Cube, Zachary Hall, Richard J. Rasby, Mark Dragastin
Supplementing Beef Cows Grazing Cornstalk Residue With A Distillers Based Cube, Zachary Hall, Richard J. Rasby, Mark Dragastin
Nebraska Beef Cattle Reports
A 4-year study is being conducted to determine the effect of excess undegrad¬able intake protein supplementation using a cube that is 2/3 dried distillers grains (DDG) to beef cows in late gesta¬tion on cow and calf performance and the performance of heifer calves whose dams were supplemented with protein. Feeding a supplement containing DDG did not influence calf birth and wean¬ing weights, cow body weight prior to calving, and calving interval. Cow body condition score and percentage of cows cyclic prior to breeding increased for supplemented cows.
Comparison Of Crude Protein And Digestibility Of Diets Of Grazing Cattle At Different Sandhills Range Sites, Bobbi Gene Geisert, Terry J. Klopfenstein, Don C. Adams, Jacqueline A. Musgrave, John Maddux
Comparison Of Crude Protein And Digestibility Of Diets Of Grazing Cattle At Different Sandhills Range Sites, Bobbi Gene Geisert, Terry J. Klopfenstein, Don C. Adams, Jacqueline A. Musgrave, John Maddux
Nebraska Beef Cattle Reports
Diet samples were collected May through September (2003) and May through November (2004) using esophageally fistulated cows at ranches in the Sandhills and southwest Nebraska. Differences in CP between the two locations were significant. Diets collected in May and June had higher CP (P = 0.04) than those collected in August through November. No interactions were detected between year and location in diet digestibility and diet digestibility was similar for southwest Nebraska and Sandhills diets.
Dried Distillers Grains Supplementation To Yearling Cattle Grazing Smooth Bromegrass: Response And Performance Profile Summary, Matthew A. Greenquist, Terry J. Klopfenstein, Galen E. Erickson, Matt K. Luebbe
Dried Distillers Grains Supplementation To Yearling Cattle Grazing Smooth Bromegrass: Response And Performance Profile Summary, Matthew A. Greenquist, Terry J. Klopfenstein, Galen E. Erickson, Matt K. Luebbe
Nebraska Beef Cattle Reports
Four years of data were summarized to evaluate yearling performance on smooth bromegrass when supplemented with dried distillers grains (DDG). On average cattle were supplemented 0.525% of BW daily with DDG for the entire grazing period (84 to 156 days). Daily gains were increased 0.55 lb/day for the entire grazing season. Performance from the last two years of data show a quadratic decrease in ADG as grazing days increase and forage quality decreases for both the supplemented and nonsupplemented cattle. The response to DDG supplementation increases with increasing grazing days.
Forage Quality And Grazing Performance Of Beef Cattle Grazing Brown Mid-Rib Grain Sorghum Residue, Andrea K. Schwarz, Corineah M. Godsey, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Robert B. Mitchell, Jeffrey F. Pedersen
Forage Quality And Grazing Performance Of Beef Cattle Grazing Brown Mid-Rib Grain Sorghum Residue, Andrea K. Schwarz, Corineah M. Godsey, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Robert B. Mitchell, Jeffrey F. Pedersen
Nebraska Beef Cattle Reports
The control (CON) grain sorghum hybrid AWheatland x RTx430 and its near-isogenic brown midrib counterpart (BRM) containing the gene bmr-12, were used in a 72-day residue grazing experiment. Grain yield averaged 119 bu/ac and was not affected by treatment. ADG was increased from 0.75 lb in CON to 1.23 lb in BMR treatments over the grazing period. NDF digestibility increased 6%-12% units in leaf fractions in BMR over CON. NDF digestibility decreased 2%-12% units over the 72-day grazing period for both hybrids. Similarly, NDF digestibility of stem fraction increased 14%-19% units in BMR over CON. NDF digestibility of the stem …
Meta-Analysis Of Unl Feedlot Trials Replacing Corn With Wcgf, Virgil R. Bremer, Galen E. Erickson, Terry J. Klopfenstein
Meta-Analysis Of Unl Feedlot Trials Replacing Corn With Wcgf, Virgil R. Bremer, Galen E. Erickson, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
A meta-analysis of UNL feedlot trials was conducted to evaluate the effect of replacing dry-rolled or high-moisture corn with wet corn gluten feed (WCGF) on feedlot cattle performance and carcass characteristics. The feeding value of WCGF was dependent on ratio of steep to corn bran of the WCGF. The performance of cattle fed WCGF composed of wet bran and steep was similar to corn fed cattle. Feeding and carcass performance of cattle fed WCGF composed of dry bran, steep, and germ improved linearly as dietary inclusion increased.
Effect Of Inclusion Level Of Modified Distillers Grains Plus Solubles In Finishing Steers, Taia J. Huls, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein
Effect Of Inclusion Level Of Modified Distillers Grains Plus Solubles In Finishing Steers, Taia J. Huls, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
Modified distillers grains plus solubles (MDGS) was fed at 0%, 10%, 20%, 30%, 40%, and 50% of the diet (DM basis) replacing dry rolled corn and high moisture corn. The feeding value of MDGS is 123% to 109% the value of corn as MDGS inclusion increases from 10% to 50% (DM basis). Except for hot carcass weight and calculated yield grade no differences in carcass characteristics were observed between treatments. Finishing diets including MDGS may be fed up to 50% of diet DM; however, optimal performance is likely between 20% to 40% of the diet DM.
Effects Of Corn Processing And Wet Distillers Grains On Nutrient Metabolism, Mark E. Corrigan, Galen E. Erickson, Terry J. Klopfenstein, Nathan F. Meyer
Effects Of Corn Processing And Wet Distillers Grains On Nutrient Metabolism, Mark E. Corrigan, Galen E. Erickson, Terry J. Klopfenstein, Nathan F. Meyer
Nebraska Beef Cattle Reports
Seven ruminally cannulated steers were used in a metabolism experiment to determine the effects of distillers grains level (0% or 40% of diet DM) on diet digestibility and rumen metabolism in diets consisting of dry-rolled, high-moisture, or steam-flaked corn. Intakes were greater while digestibility was reduced for DM and organic matter in steers fed 40% compared to 0% distillers grains. Average and maximum pH were less for steers fed 40% distillers grains, but pH change and variance were also less for 40% compared to 0% WDGS. Feeding WDGS does not increase rumen pH, but does decrease variance. Starch intakes were …
Effect Of Distillers Grains Fat Level On Digestibility, Mark E. Corrigan, Galen E. Erickson, Terry J. Klopfenstein, Nathan F. Meyer
Effect Of Distillers Grains Fat Level On Digestibility, Mark E. Corrigan, Galen E. Erickson, Terry J. Klopfenstein, Nathan F. Meyer
Nebraska Beef Cattle Reports
Four steers were used in a three-period switchback design to determine effects of dry distillers grains fat level on digestibility. Forage based diets were supplemented with distillers grains with differing fat levels (6.9% or 13.3 % dry matter). Intake and digestibility of DM and organic matter did not differ between treatments. Neutral detergent fiber intake was less and digestibility tended to be less in steers supplemented with high fat distillers grains. Differences in fiber type and intake as well as fat intake may be responsible for the small difference in neutral detergent fiber digestibility.
Cattle Code: An Economic Model For Determining Byproduct Returns For Feedlot Cattle, Crystal D. Buckner, Virgil R. Bremer, Terry J. Klopfenstein, Galen E. Erickson, Darrell R. Mark
Cattle Code: An Economic Model For Determining Byproduct Returns For Feedlot Cattle, Crystal D. Buckner, Virgil R. Bremer, Terry J. Klopfenstein, Galen E. Erickson, Darrell R. Mark
Nebraska Beef Cattle Reports
Cattle CODE — Coproduct Optimizer Decision Evaluator — is a model developed to predict performance and economic returns when byproducts are fed to finishing cattle. Four scenarios were evaluated to illustrate how the model works and to show sensitivity to corn price and distance from the ethanol plant, which resulted in positive returns for feeding WDGS, Sweet Bran, or DDGS up to 50% of diet DM and under 100 miles distance from the ethanol plant to the feedlot.
Nutrient Mass Balance And Performance Of Feedlot Cattle Fed Wet Distillers Grains, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Matthew A. Greenquist
Nutrient Mass Balance And Performance Of Feedlot Cattle Fed Wet Distillers Grains, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Matthew A. Greenquist
Nebraska Beef Cattle Reports
Two experiments were conducted to evaluate effects of three dietary inclusions (0%, 15%, and 30%, DM basis) of wet distillers grain plus solubles (WDGS) on feedlot performance and nutrient mass balance in open feedlots. Replacing corn with WDGS increased ADG response and HCW in both experiments. Feeding WDGS balanced for MP (15%) or in excess of requirements (30%) resulted in more OM in the manure but only more manure N in the winter experiment. Percentage N loss was not different among WDGS level but the amount of N lost was increased when WDGS were fed due to greater N excretion …
Aerobic Composting Or Anaerobic Stockpiling Of Feedlot Manure, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Matthew A. Greenquist
Aerobic Composting Or Anaerobic Stockpiling Of Feedlot Manure, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Matthew A. Greenquist
Nebraska Beef Cattle Reports
Two manure management and storage methods, manure stockpiled anaerobically or composted aerobically for 104 days were evaluated. Nitrogen recovery was 85.7% and 56.4% for stockpiled and composted manure, respectively. Organic nitrogen concentrations were greater for composted manure while ammonium nitrogen concentrations were greater for stockpiled manure. Simulation of hot, dry conditions during field application indicated the amount of ammonia nitrogen lost from stock¬piled manure was not great enough to offset the total nitrogen recovery advantage of this method. When evaluated on a nutrient basis, stockpiled manure has greater value as a fertilizer compared with composted manure in this study.
Effects Of Distillers Grains And Manure Management On Nutrient Management Plans And Economics, Virgil R. Bremer, Richard K. Koelsch, Raymond E. Massey, Galen E. Erickson
Effects Of Distillers Grains And Manure Management On Nutrient Management Plans And Economics, Virgil R. Bremer, Richard K. Koelsch, Raymond E. Massey, Galen E. Erickson
Nebraska Beef Cattle Reports
Feed Nutrient Management Plan Economics software (FNMP$; Koelsch et al., 2007; available at http://cnmp.unl.edu under software resources) was used to evaluate the effect of distillers grains inclusion and manure application rate on feedlot nutrient management plans. Inclusion of distillers grains in diets resulted in greater nutrient excretion, land requirements, and manure hauling distances. However, the increased cost of manure management from feeding byproducts has the potential to be offset by increased manure fertilizer value. Changing from N-based to a P-based application rate increased the amount of land required and costs to apply manure. However, when manure was applied at a …
Total And Water Soluble Phosphorus Content Of Feedlot Cattle Feces And Manure, Virgil R. Bremer, Crystal D. Buckner, Galen E. Erickson, Terry J. Klopfenstein
Total And Water Soluble Phosphorus Content Of Feedlot Cattle Feces And Manure, Virgil R. Bremer, Crystal D. Buckner, Galen E. Erickson, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
The percentage of feedlot feces and manure P that is water soluble was 41% (not accounting for additional soluble P from urine) and 24% respectively. The interaction of feces and urine with minerals and metals reduced the water solubility of P in feedlot manure relative to feces. Increasing dietary P level increased manure P concentration and water solubility of manure. Manure P from cattle fed feedlot diets containing 0.30% to 0.50% P was 28% water soluble P. The water solubility of P in feedlot feces and manure is an indicator of the potential for P runoff from feedlots and fields …
Climate Conditions In Bedded Confinement Buildings, Terry L. Mader, Leslie J. Johnson, Sheryl L. Colgan
Climate Conditions In Bedded Confinement Buildings, Terry L. Mader, Leslie J. Johnson, Sheryl L. Colgan
Nebraska Beef Cattle Reports
Climate conditions in bedded feedlot facilities during summer, fall, and winter seasons were measured. Summer season temperatures and THI levels were greatest at the front of the building. In winter, the building (with a curtain) maintained greater temperature, when compared to outside conditions, by decreasing wind speed through the building. Wind speeds through the building were reduced regardless of curtain usage.
Influence Of Corn Hybrid, Kernel Traits, And Growing Location On Digestibility, Flint W. Harrelson, Galen E. Erickson, Terry J. Klopfenstein, David S. Jackson, Wayne A. Fithian
Influence Of Corn Hybrid, Kernel Traits, And Growing Location On Digestibility, Flint W. Harrelson, Galen E. Erickson, Terry J. Klopfenstein, David S. Jackson, Wayne A. Fithian
Nebraska Beef Cattle Reports
One hundred thirty-two commercially available corn hybrids, grown in 2 field replications within three locations, were evaluated for effects of corn hybrid, kernel traits and growing location on digestibility. A significant hybrid by location interaction was observed for most kernel traits. There is potential to select hybrids for DM digestibility, but digestibility shows no consistent relationship with other kernel traits.
Sampling Wet Distillers Grains Plus Solubles To Determine Nutrient Variability, Crystal D. Buckner, Sarah J. Vanness, Galen E. Erickson, Terry J. Klopfenstein, Joshua R. Benton
Sampling Wet Distillers Grains Plus Solubles To Determine Nutrient Variability, Crystal D. Buckner, Sarah J. Vanness, Galen E. Erickson, Terry J. Klopfenstein, Joshua R. Benton
Nebraska Beef Cattle Reports
Dry matter, protein, fat, phosphorus, and sulfur were measured on 100 wet distillers grains plus solubles (WDGS) samples per ethanol plant (6 plants total) with 10 samples/day, 5 consecutive days, and 2 separate months (periods). Coefficients of variation were 1.5% to 4.5% for DM within plant. Fat in WDGS averaged 11.8% and ranged from 10.7% to 13.1% across plants, with ranges of 2 to 5 percentage units within plant. Coefficients of variation were 5% to 8% and as great as 36% within plant for sulfur. The variation in protein and phosphorus were minimal.
Performance And Economics Of Two Calf Wintering Systems, William A. Griffin, Terry J. Klopfenstein, Galen E. Erickson
Performance And Economics Of Two Calf Wintering Systems, William A. Griffin, Terry J. Klopfenstein, Galen E. Erickson
Nebraska Beef Cattle Reports
Two wintering systems, cornstalk grazing plus 5 lb/head/day of wet corn gluten feed and cornstalk grazing followed by dry lot where steers were fed hay and supplemented 5 lb/head/day of wet corn gluten feed were evaluated. There were no differences in daily gain, or final body weight for either system. While there were no statistical differences in cost of gain, break-even, or profitability, economics numerically favored steers grazing cornstalks alone.
The Cattle Price Cycle: Revisited Again, Matthew C. Stockton, Roger K. Wilson, Leslie Aaron Stalker
The Cattle Price Cycle: Revisited Again, Matthew C. Stockton, Roger K. Wilson, Leslie Aaron Stalker
Nebraska Beef Cattle Reports
New analyses and statistical techniques were applied to historical data to determine if time, changes in production technology, and business structure changes in the sector had altered the length of the cattle price cycle. Most recent work has been done the cattle inventory cycle. The price cycle was shown to be remarkably constant, despite many changes in the industry. Feeder cattle prices have continued to follow an approximate 10-year cycle. The model demonstrates the consistency of the cycle but shows that unexplained price variations occur suggesting caution be employed when it is used as a marketing guide.
Evaluation Of Calf-Fed And Long Yearling Production With Increasing Corn Price, William A. Griffin, Terry J. Klopfenstein, Galen E. Erickson, Darrell R. Mark
Evaluation Of Calf-Fed And Long Yearling Production With Increasing Corn Price, William A. Griffin, Terry J. Klopfenstein, Galen E. Erickson, Darrell R. Mark
Nebraska Beef Cattle Reports
An economic comparison of calf-fed and long-yearling production was conducted to determine the impact of increasing corn price on steer profitability. Corn prices of $2.50, $3.50, and $4.50/bu were used. With increasing corn price, feeder prices were assumed to decrease which decreased initial cost more for yearlings than calf-feds. Profitability of yearlings versus calf-feds increased $4-6 for each $1/bu increase in corn price.
Effect Of Backgrounding Gain, Grazing Length And Dry Distillers Grain Consumption On Performance And Carcass Traits Of June Born Cattle, J. Alan Taylor, Leslie Aaron Stalker, Terry J. Klopfenstein, Don C. Adams, William A. Griffin
Effect Of Backgrounding Gain, Grazing Length And Dry Distillers Grain Consumption On Performance And Carcass Traits Of June Born Cattle, J. Alan Taylor, Leslie Aaron Stalker, Terry J. Klopfenstein, Don C. Adams, William A. Griffin
Nebraska Beef Cattle Reports
June-born cattle backgrounded at a lower rate during the winter were unable to fully compensate during sum¬mer grazing for restricted gain during backgrounding. Increased gain during backgrounding resulted in cattle being heavier for all market periods. The higher cost associated with increased gain was offset by heavier sale weights. Cattle grazing meadow regrowth had improved feedlot performance and heavier finished weight. Backgrounding cattle grazing winter range supplemented with DDG costs less than backgrounding cattle in a drylot. Supplementing with DDG during summer grazing decreased forage intake and increased gain, with 1.8 lb/head/day being more cost effective than 5 lb/head/day.
Vaccination For Escherichia Coli O157:H7 In Feedlot Cattle, Rodney A. Moxley, David R. Smith, Karen Hansen, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Dragan Rogan
Vaccination For Escherichia Coli O157:H7 In Feedlot Cattle, Rodney A. Moxley, David R. Smith, Karen Hansen, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Dragan Rogan
Nebraska Beef Cattle Reports
A clinical trial conducted during the summer of 2006 evaluated the effects of two- and three-dose regimens of an Escherichia coli O157 vaccine product on the probability of detecting E. coli O157:H7 in feces and on colonization of the terminal rectum. The three-dose regimen significantly reduced the probability for cattle to shed E. coli O157:H7 in feces by 63% compared to placebo treated cattle. A dose-effect was demonstrated because a two-dose regimen of the vaccine product was intermediate in effect. These results are consistent with previous estimates of vaccine efficacy against fecal shedding and agree with our previous finding that …