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Full-Text Articles in Animal Sciences
Factors That Influence Consumers’ Overall Sensory Acceptance Of Strip Steaks, Jennie M. Hodgen, Bethany M. Johnston, Blaine E. Jenschke, Kent M. Eskridge, Chris R. Calkins
Factors That Influence Consumers’ Overall Sensory Acceptance Of Strip Steaks, Jennie M. Hodgen, Bethany M. Johnston, Blaine E. Jenschke, Kent M. Eskridge, Chris R. Calkins
Nebraska Beef Cattle Reports
Multivariate analysis was used to determine demographic, knowledge, habits, and sensory preferences that influence a consumer’s opinion about the acceptability of strip steaks from corn-fed, barley-fed, and grass-fed beef. Even with all the additional information, most consumers’ final opinions about specific types of steaks are based on how they perceive the flavor, tenderness, and juiciness of the beef.
Mapping Tenderness Of The Serratus Ventralis, Lauren M. Grimes, Chris R. Calkins
Mapping Tenderness Of The Serratus Ventralis, Lauren M. Grimes, Chris R. Calkins
Nebraska Beef Cattle Reports
Serratus ventralis muscles from eight USDA Choice and eight Select carcasses were obtained. Samples were enhanced with a marination or left as controls, then blade tenderized once as whole muscles and cut into steaks. Enhanced steaks were then blade tenderized individually. Odd-numbered steaks were cooked, cored, and sheared for Warner-Bratzler (WBS) shear force determination. Tenderness was found to vary sporadically throughout the muscle with the posterior end being the most tender, regardless of grade. Enhanced samples produced lower WBS values than controls. The serratus ventralis does respond to enhancement techniques, and steaks could especially be fabricated from the posterior end.
Analysis Of Veal Shoulder Muscles For Chemical Attributes, Gary A. Sullivan, Chris R. Calkins, D. Dwain Johnson, Brian G. Sap
Analysis Of Veal Shoulder Muscles For Chemical Attributes, Gary A. Sullivan, Chris R. Calkins, D. Dwain Johnson, Brian G. Sap
Nebraska Beef Cattle Reports
The value of wholesale veal cuts varies; the rack, loin, and leg demand a premium price, while the shoulder brings little more per pound than the live animal. This study characterized the chemical properties of muscles from the veal shoulder for the potential to upgrade their value. The m. infraspinatus and m. rhomboideus fell in the intermediate or desirable groups for all traits. All nine muscles show promise in the ability to increase value.
Tenderness, Sensory, And Color Attributes Of Two Muscles From The Beef Knuckle, Blaine E. Jenschke, Brittni J. Swedberg, Chris R. Calkins
Tenderness, Sensory, And Color Attributes Of Two Muscles From The Beef Knuckle, Blaine E. Jenschke, Brittni J. Swedberg, Chris R. Calkins
Nebraska Beef Cattle Reports
Twelve USDA Choice and twelve USDA Select quadriceps muscles were fabricated traditionally or the seams it shares with the top and bottom round were separated pre-rigor to test the effect of pre-fabrication on tenderness, sensory, and color. Results from this study indicated treatment had minimal effects on quality attributes. The proximal portions of the knuckle were more tender, lighter in color, and more red when compared to the distal portions, although all were reasonably tender. Pre-fabrication can be conducted without detriment to product quality.
Characteristics Of Beef Finished On Wet Distillers Grains With Varying Types And Levels Of Roughage, Blaine E. Jenschke, Joshua R. Benton, Chris R. Calkins, Timothy P. Carr, Kent M. Eskridge, Terry J. Klopfenstein, Galen E. Erickson
Characteristics Of Beef Finished On Wet Distillers Grains With Varying Types And Levels Of Roughage, Blaine E. Jenschke, Joshua R. Benton, Chris R. Calkins, Timothy P. Carr, Kent M. Eskridge, Terry J. Klopfenstein, Galen E. Erickson
Nebraska Beef Cattle Reports
Beef knuckles (n = 160) were obtained from source-verified cattle finished on 30% wet distillers grains plus solubles enriched with varying levels of alfalfa hay, corn silage, or corn stalks based on NDF. Our objectives were to determine if roughage inclusion, in conjunction with wet distillers grains plus solubles and cattle location affects beef flavor. Data from this study indicate type and level of roughage inclusion and cattle location have minimal effects on fatty acid profiles and sensory properties of the M. Rectus femoris. However, individual fatty acids of subcutaneous and intramuscular fat were significantly correlated with liver-like off flavor.
Influence Of Feeding Wet Distillers Grains On Fatty Acid Composition Of Beef, Amilton S. De Mello Jr., Blaine E. Jenschke, Chris R. Calkins
Influence Of Feeding Wet Distillers Grains On Fatty Acid Composition Of Beef, Amilton S. De Mello Jr., Blaine E. Jenschke, Chris R. Calkins
Nebraska Beef Cattle Reports
Ribeye slices (M. Longissimus thoracis) were obtained from 94 calf-fed, crossbred steers. Animals were randomly allocated into three groups and finished for 133 days with corn-based diets and varying levels of wet distillers grains plus solubles (0%, 15% or 30%, DM Basis). No treatment differences were found for total lipid, unsaturated, and saturated fatty acids. However, values of 18:2 9t,12t, total polyunsaturated fatty acids, total amount of trans fatty acids, conjugated linoleic acid and the omega 6:omega 3 ratio were elevated. It appears that wet distillers grains plus solubles finishing diets alters the fatty acid profile of beef.
Wet Distillers Grains Plus Solubles Affect Lipid Oxidation And Objective Color Of Beef Steaks, Amilton S. De Mello Jr., Blaine E. Jenschke, Chris R. Calkins
Wet Distillers Grains Plus Solubles Affect Lipid Oxidation And Objective Color Of Beef Steaks, Amilton S. De Mello Jr., Blaine E. Jenschke, Chris R. Calkins
Nebraska Beef Cattle Reports
Strip loins (M. Longissimus lum¬borum), tenderloins (M. Psoas major) and top blades (M. Infraspinatus) from 48 calf-fed, crossbred steer carcasses, were used to test the effects of wet distillers grains plus solubles finishing diets on beef shelf life. After 7-day display, inclusion of wet distillers grains plus solubles in the diet caused higher levels of oxidation on top blades and strip loins and negative effects on color of top blade and tenderloin steaks after 3 days of retail display.
Effects Of Wet Distillers Grains Finishing Diets On Fat Content And Marbling Score In Steers, Amilton S. De Mello Jr., Chris R. Calkins
Effects Of Wet Distillers Grains Finishing Diets On Fat Content And Marbling Score In Steers, Amilton S. De Mello Jr., Chris R. Calkins
Nebraska Beef Cattle Reports
Ninety-four, calf-fed, crossbred steers were randomly allocated to three finishing diets consisting of different amounts of wet distillers grains plus solubles (0%, 15% or 30%, DM basis). Steers were fed for 133 days to test the relationship between marbling score and fat content, as well as effects on marbling texture and marbling distribution. Results of this research suggest that feeding up to 30% of wet distillers grains plus solubles has no detrimental effects on marbling in beef.
Evaluation Of Methods For Dry Matter Determination Of Ethanol Byproducts, Mallorie F. Wilken, Galen E. Erickson, Joshua R. Benton, Crystal D. Buckner, Terry J. Klopfenstein, Kip Karges, Matt Gibson
Evaluation Of Methods For Dry Matter Determination Of Ethanol Byproducts, Mallorie F. Wilken, Galen E. Erickson, Joshua R. Benton, Crystal D. Buckner, Terry J. Klopfenstein, Kip Karges, Matt Gibson
Nebraska Beef Cattle Reports
Traditional wet distillers grains plus solubles, modified distillers grains, Dakota Bran Cake, and distillers solubles were sampled and replicates tested using oven drying (n = 8) at 105°C and 60°C, vacuum oven drying (n = 3) and toluene distillation process (n = 8). Two replicates were evaluated using Karl Fischer titration. Oven drying was compared to toluene distillation as the standard. Oven drying at 60°C for 24 hours resulted in the same DM (P > 0.10) as toluene distillation for wet byproducts.
Ruminal Methane Production Following The Replacement Of Dietary Corn With Dried Distillers Grains, Eric J. Behlke, Tim G. Sanderson, Terry J. Klopfenstein, Jess L. Miner
Ruminal Methane Production Following The Replacement Of Dietary Corn With Dried Distillers Grains, Eric J. Behlke, Tim G. Sanderson, Terry J. Klopfenstein, Jess L. Miner
Nebraska Beef Cattle Reports
Methane production was measured following the replacement of corn with DDGS in vitro and also after the simultaneous replacement of corn and corn oil with DDGS (for 30% of the diet) in vivo. In vitro substitution of corn with DDGS increased the amount of methane produced per milligram of DM digested. Likewise, in vivo methane production was increased by 44% when corn and corn oil were replaced with DDGS. The greater energy value of DDGS relative to corn in a concentrate-based diet is not due to decreased methanogenesis.
Microbial Characteristics, Microbial Nitrogen Flow, And Urinary Purine Derivative Excretion In Steers Fed At Two Levels Of Feed Intake, Grant I. Crawford, Matt K. Luebbe, Joshua R. Benton, Terry J. Klopfenstein, Galen E. Erickson
Microbial Characteristics, Microbial Nitrogen Flow, And Urinary Purine Derivative Excretion In Steers Fed At Two Levels Of Feed Intake, Grant I. Crawford, Matt K. Luebbe, Joshua R. Benton, Terry J. Klopfenstein, Galen E. Erickson
Nebraska Beef Cattle Reports
Ruminally and duodenally fistulated Holstein steers were fed at 40% and 85% of ad-libitum intake. Microbial purine:N ratio did not differ between intake levels, which makes estimating microbial protein easier in production or experimental settings. Urinary purine derivatives (PD):creatinine (PD:C) ratio and microbial CP flow estimated from the duodenum increased with the higher feeding level. Urinary PD:C and duodenal purine flow were related, suggesting that urinary PD:C ratio can be used to estimate relative differences in microbial CP flow.
Predicting Aged Beef Tenderness With A Hyperspectral Imaging System, Lauren M. Grimes, Govindarajan Konda Naganathan, Jeyamkondan Subbiah, Chris R. Calkins
Predicting Aged Beef Tenderness With A Hyperspectral Imaging System, Lauren M. Grimes, Govindarajan Konda Naganathan, Jeyamkondan Subbiah, Chris R. Calkins
Nebraska Beef Cattle Reports
A hyperspectral imaging apparatus was developed to predict, at 2-day postmortem, the 14 day aged tenderness of beef. USDA Choice and Select grade longissimus steaks (n = 314) from between the 12th and 13th ribs were scanned at 2 days postmortem, vacuum packaged, aged to 14 days, and frozen. For tenderness determination, steaks were thawed overnight, scanned, cooked in an impingement oven, and slice shear force values were obtained. The model predicted three tenderness categories (tender, intermediate, tough) with 77.1% accuracy, and two tenderness categories (acceptable, tough) with 93.7% accuracy. This hyperspectral imaging system was effective in predicting 14-day aged …
Statistics Used In The Nebraska Beef Report And Their Purpose
Statistics Used In The Nebraska Beef Report And Their Purpose
Nebraska Beef Cattle Reports
The purpose of beef cattle and beef product research at UNL is to provide reference information that represents the various populations (cows, calves, heifers, feeders, carcasses, retail products, etc.) of beef production. Obviously, the researcher cannot apply treatments to every member of a population; therefore, he or she must sample the population. The use of statistics allows the researcher and readers of the Nebraska Beef Report the opportunity to evaluate separation of random (chance) occurrences and real biological effects of a treatment. Following is a brief description of the major statistics used in the beef report. For a more detailed …
Oral Dosage With NutrocalTm (Calcium Propionate) To Enhance Beef Tenderness, Dana Hanson, Chris R. Calkins, Johnny Horton
Oral Dosage With NutrocalTm (Calcium Propionate) To Enhance Beef Tenderness, Dana Hanson, Chris R. Calkins, Johnny Horton
Nebraska Beef Cattle Reports
Oral dosage of market-weight beef steers with NutroCAL™(a source of calcium propionate) tends to increase strip loin calcium and enhance tenderness after a 14 to 21 day aging period. No responses were observed in the eye of round or the chuck tender. The time course for serum and muscle calcium response appears to be highly variable and different from calcium chloride drenching.
Meta-Analysis Of Unl Feedlot Trials Replacing Corn With Wdgs, Virgil R. Bremer, Galen E. Erickson, Terry J. Klopfenstein
Meta-Analysis Of Unl Feedlot Trials Replacing Corn With Wdgs, Virgil R. Bremer, Galen E. Erickson, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
A meta-analysis of UNL feedlot trials replacing dry-rolled or high-moisture corn with wet distillers grains plus solubles (WDGS) indicated WDGS fed between 15% to 40% of diet DM was 130% the feeding value of corn. Feed: Gain, ADG, marbling score, and fat thickness responded quadratically as WDGS inclusion increased. In most cases, performance and carcass characteristics improved up to 30% to 40%, then gradually decreased. Feeding WDGS up to 40% of diet DM improved performance and quality grade.
Price Discovery In North And West Central Nebraska Livestock Auction Markets, Matthew C. Stockton, Roger K. Wilson, Leslie Aaron Stalker
Price Discovery In North And West Central Nebraska Livestock Auction Markets, Matthew C. Stockton, Roger K. Wilson, Leslie Aaron Stalker
Nebraska Beef Cattle Reports
Price data from west central Nebraska livestock auction markets were used to determine the price discovery and information flow patterns between weight-gender cattle classes using time series analysis and directed acyclical graphs (DAG). Results indicated steers weighing 400-600 lb were the point of price discovery; the price change of each weight of steers impacted the price of the next heavier class of steers. Price movements for 600-700 lb heifers impacted prices of many other weight/gender classes including the price of heavier heifers and steers.
Determination Of Diet Protein And Digestibility Of Native Sandhills Upland Range, Bobbi Gene Geisert, Terry J. Klopfenstein, Don C. Adams, Jacqueline A. Musgrave, Walter H. Schacht
Determination Of Diet Protein And Digestibility Of Native Sandhills Upland Range, Bobbi Gene Geisert, Terry J. Klopfenstein, Don C. Adams, Jacqueline A. Musgrave, Walter H. Schacht
Nebraska Beef Cattle Reports
A significant year by grazing level effect was detected on CP content of diet samples collected from 2003 to 2005 at the Gudmundsen Sandhills Laboratory. During drought years (2003 and 2004) cows selected plants which were higher in CP and lower in digestibility. High levels of grazing pressure decreased diet IVOMD compared to diets from ungrazed and moderately grazed pastures. Prediction models generated from these data predict dietary CP and organic matter disappearance (OMD) of cattle grazing native Sandhills range pastures.
Evaluation Of Storage Methods For Wet Distillers Grains Plus Solubles With Added Forages, Daniel R. Adams, Mallorie F. Wilken, Brandon L. Nuttleman, Luke M. Kavorik, Joshua R. Benton, Matthew A. Greenquist, Galen E, Erickson, Terry J. Klopfenstein, Richard J. Rasby
Evaluation Of Storage Methods For Wet Distillers Grains Plus Solubles With Added Forages, Daniel R. Adams, Mallorie F. Wilken, Brandon L. Nuttleman, Luke M. Kavorik, Joshua R. Benton, Matthew A. Greenquist, Galen E, Erickson, Terry J. Klopfenstein, Richard J. Rasby
Nebraska Beef Cattle Reports
Six experiments indicated minimum amounts of dry feedstuffs needed for storage of wet distillers grains plus solubles (WDGS) in a silo bag, with a constant pressure of 300 psi, were 15% grass hay, 12.5% wheat straw, 22.5% alfalfa hay, 50% dry distillers grains and 60% wet corn gluten feed (WCGF) with the remaining percentage as WDGS (DM basis). For storage in bunker silos, the recommended levels are 40% grass hay, 30% wheat straw and 30% cornstalks.
Use Of Dried Distiller’S Grains To Extend Range Capacity, Kristin H. Gustad, Leslie Aaron Stalker, Terry J. Klopfenstein, Walter H. Schacht, Don C. Adams, Jacqueline A. Musgrave, Jerry D. Volesky
Use Of Dried Distiller’S Grains To Extend Range Capacity, Kristin H. Gustad, Leslie Aaron Stalker, Terry J. Klopfenstein, Walter H. Schacht, Don C. Adams, Jacqueline A. Musgrave, Jerry D. Volesky
Nebraska Beef Cattle Reports
At the University of Nebraska Gudmundsen Sandhills Lab for 60 days from mid-June to mid-August for 2 years (2005 and 2006), 24 paddocks were randomly assigned to one of three treatments. Treatments were control (CON) at the recommended stocking rate and no supplementation, double stocked (2X) or double stocked with 5 lb of DDGS daily (SUP). There was no difference in ADG between the CON and 2X calves; however, SUP calves gained more than the unsupplemented groups. Forage use was not different between SUP (58%) and 2X (62%); however, use was lower for CON group (36%). Distillers dried grains supplementation …
The Effects Of Supplementing Wet Distillers Grains Mixed With Wheat Straw To Growing Steers, Brandon L. Nuttelman, Terry J. Klopfenstein, William A. Griffin, Matt K. Luebbe
The Effects Of Supplementing Wet Distillers Grains Mixed With Wheat Straw To Growing Steers, Brandon L. Nuttelman, Terry J. Klopfenstein, William A. Griffin, Matt K. Luebbe
Nebraska Beef Cattle Reports
A growing study compared feeding wet distillers grains, dried distillers grains, and a mix of 66% wet distillers grains and 33% wheat straw as supplements to a forage-based diet. Steers were supplemented 0, 2, 4, or 6 lb distillers grains/head daily. Wet distillers grains and dried distillers grains produced higher final body weight and dry matter intake compared to the mix. Increasing levels of distillers grains increased performance in forage based diets and wet grains mixed with straw reduced forage intake.
Frontmatter And Contents
Nebraska Beef Cattle Reports
Appreciation is also expressed to the following Research Technicians, Unit Managers, and Crew involved in the Research Programs at our various locations.
Agricultural Research & Development Center, Ithaca:
Josh Benton
Jeff Bergman
Matt Greenquist
Rodney Lamb
Walker Luedtke
Allison Miller
Karl Moline
Mark Nelson
Chuck Rezac
Ken Rezac
Mark Schroeder
Matt Sillivan
Andrea Schwarz
Doug Watson
Animal Science Department, Lincoln:
Crystal Buckner
Deb Clopton
Ruth Diedrichsen
Jeryl Hauptman
Blaine Jenschke
Tommi Jones
Matt Luebbe
Nathan Meyer
Clyde Naber
Calvin Schrock
Gudmundsen Sandhills Laboratory, Whitman:
Andy Applegarth
Jay Holthus
Jackie Musgrave
John Nollette
Ryan Sexson
Panhandle Research & Extension Center, Scottsbluff: …
Influence Of Corn Hybrid And Processing Method On Finishing Performance And Carcass Characteristics, Flint W. Harrelson, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Wayne A. Fithian
Influence Of Corn Hybrid And Processing Method On Finishing Performance And Carcass Characteristics, Flint W. Harrelson, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Wayne A. Fithian
Nebraska Beef Cattle Reports
Five commercially available corn hybrids were evaluated for finishing cattle performance and carcass characteristics when fed as high-moisture (HMC) or dry-rolled corn (DRC). No significant interactions were observed between hybrid and processing method. Corn hybrid had no significant impact on ADG or DMI, but did have a minor influence on F:G. However, these data suggested that processing as HMC-method had a greater effect on cattle performance than hybrid.
Influence Of Corn Hybrid And Processing Method On Ruminal And Intestinal Digestion, Flint W. Harrelson, Nathan F. Meyer, Galen E. Erickson, Terry J. Klopfenstein, Wayne A. Fithian
Influence Of Corn Hybrid And Processing Method On Ruminal And Intestinal Digestion, Flint W. Harrelson, Nathan F. Meyer, Galen E. Erickson, Terry J. Klopfenstein, Wayne A. Fithian
Nebraska Beef Cattle Reports
Using the mobile bag technique, five commercially available corn hybrids harvested as either dry-rolled or high-moisture corn were evaluated for site and extent of DM and starch digestion. Total-tract DM digestibility was improved 7 to 16 percentage units, and total-tract starch digestibility was improved 9 to 18 percentage units among hybrids when processed as high-moisture corn compared to dry-rolled corn. The results of this trial suggest that hybrid and processing method interact and can influence DM and starch digestibility.
Modeling Daily Water Intake In Cattle Finished In Feedlots, Rodrigo A. Arias, Terry L. Mader
Modeling Daily Water Intake In Cattle Finished In Feedlots, Rodrigo A. Arias, Terry L. Mader
Nebraska Beef Cattle Reports
Simple regression and multiple regression analyses were conducted to estimate factors affecting daily water intake(DWI) of finishing cattle. Seasonal simple linear regression equations were very poor predicting DWI (r2 < 0.15). Best results were obtained with the overall simple regression. The multiple regression analysis showed that daily minimum temperature (or THI), solar radiation, and dry matter intake were the most important factors affecting DWI in cattle finished in feedyards. The following prediction equation was developed: daily water intake, gal*d-1 = -0.52677+ (0.1229 *DMI, lb*d-1) + (0.01137*solar radiation, kcal*d-1) + (0.06529*daily minimum temperature, °F).
Sorting Steers By Weight Into Calf-Fed, Summer Yearlings And Fall Yearling Feeding Systems, Daniel R. Adams, Matt K. Luebbe, Terry J. Klopfenstein, Galen E. Erickson
Sorting Steers By Weight Into Calf-Fed, Summer Yearlings And Fall Yearling Feeding Systems, Daniel R. Adams, Matt K. Luebbe, Terry J. Klopfenstein, Galen E. Erickson
Nebraska Beef Cattle Reports
Sorting steers into one of three different feeding periods — calf-feds, summer yearlings, and fall yearlings — resulted in no differences in performance or average carcass characteristics. Sorting decreased the amount of variation in hot carcass weight and carcasses over 950 lbs.
The Effect Of Delaying Initial Feedlot Implant On Performance And Carcass Characteristics Of Calf-Fed Steers, William A. Griffin, Don C. Adams, Richard N. Funston
The Effect Of Delaying Initial Feedlot Implant On Performance And Carcass Characteristics Of Calf-Fed Steers, William A. Griffin, Don C. Adams, Richard N. Funston
Nebraska Beef Cattle Reports
Steers in two, 2-year experiments (n = 409) were either given an implant at feedlot arrival or implanted 30 days after feedlot entry. In Experiment 1, steer calves were not implanted at branding and in Experiment 2 calves were implanted at branding. There was no difference in feedlot performance for either experiment. However, in Experiment 1 there was a year by treatment interaction for marbling score suggesting that delaying implant in calves may affect quality grade.
Effect Of Excede® Administered To Calves At Arrival In The Feedlot On Performance And Respiratory Disease, Joshua R. Benton, Galen E. Erickson, Terry J. Klopfenstein, Matt K. Luebbe, David R. Smith, Gary E. Sides, Lonty Bryant
Effect Of Excede® Administered To Calves At Arrival In The Feedlot On Performance And Respiratory Disease, Joshua R. Benton, Galen E. Erickson, Terry J. Klopfenstein, Matt K. Luebbe, David R. Smith, Gary E. Sides, Lonty Bryant
Nebraska Beef Cattle Reports
In a clinical trial where cattle were either given Excede® or not on arrival, ADG increased and F:G was numerically improved for cattle that received Excede compared to control cattle. There were no differences between initial or final BW, or DMI observed during the receiving period due to the administration of Excede. The incidence of bovine respiratory disease (BRD) for the 32 days of the study was 4.4% for cattle that received Excede at arrival and was different compared to the control cattle which was 12.2%. The correlation (-0.157) between DMI and morbidity observed in this study was not significant. …
Effects Of Aging On Veal Shoulder Muscles, Gary A. Sullivan, Chris R. Calkins, D. Dwain Johnson, Brian G. Sapp
Effects Of Aging On Veal Shoulder Muscles, Gary A. Sullivan, Chris R. Calkins, D. Dwain Johnson, Brian G. Sapp
Nebraska Beef Cattle Reports
Six muscles were attained from 36 paired veal shoulders and each pair was assigned to one of six aging comparisons. After aging, muscles were cooked and evaluated using Warmer Bratzler shear force. The largest decline in shear force occurred during comparison of 3 and 10 days aging with additional improvements found up to 24 days. The m. infraspinatus was the most tender muscle; the m. supraspinatus was the toughest. The m. serratus ventralis had the greatest response to aging and the m. pectoralis profundus (brisket) had the least.
Relationship Between Metabolizable Protein Balance And Feed Efficiency Of Steers And Heifers, Grant I. Crawford, Stephanie A. Quinn, Terry J. Klopfenstein, Galen E. Erickson
Relationship Between Metabolizable Protein Balance And Feed Efficiency Of Steers And Heifers, Grant I. Crawford, Stephanie A. Quinn, Terry J. Klopfenstein, Galen E. Erickson
Nebraska Beef Cattle Reports
Two individual feeding experiments were analyzed for the relationship between metabolizable protein (MP) balance and feed efficiency (G:F) in individually-fed steers and heifers. In Experiment 1, 29 crossbred steers were fed steam-flaked corn (SFC)-based diets containing either 0% or 1.2% urea (DM basis). In Experiment 2, 75 crossbred heifers were fed SFC-based diets with either 0% or 1.5% urea. The NRC (1996) MP model was used to determine individual degradable intake protein and MP balances. In both experiments there was a negative relationship within treatment between MP balance and G:F. These results were not expected, and three potential causes were …
Comparison Of A Long Yearling System And Calf-Fed Performance And Economics, William A. Griffin, Terry J. Klopfenstein, Galen E. Erickson, Dillon M. Feuz, James C. Macdonald
Comparison Of A Long Yearling System And Calf-Fed Performance And Economics, William A. Griffin, Terry J. Klopfenstein, Galen E. Erickson, Dillon M. Feuz, James C. Macdonald
Nebraska Beef Cattle Reports
A study was conducted to determine differences in performance, carcass characteristics, and profitability of a calf-feeding and a yearling production system. Yearlings had higher daily gains compared to calf-feds; however, calf-feds were more efficient than yearlings. Yearlings produced more weight than calf-feds leading to an improvement in profitability for yearlings compared to calf-feds. There were no differences in yield grade or percentage grading Choice for yearlings compared to calf-feds, even though calf-feds had higher fat thickness compared to yearlings.