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Full-Text Articles in Animal Sciences
Back Cover: 2005 Beef Cattle Report
Back Cover: 2005 Beef Cattle Report
Nebraska Beef Cattle Reports
Two Programs -- One Industry
Grazing Livestock Systems Major
Feedlot Management Internship Program
Beef . . . Built on Partnerships
Nebraska 2005 Beef Cattle Report (Complete Volume)
Nebraska 2005 Beef Cattle Report (Complete Volume)
Nebraska Beef Cattle Reports
Contents
Cow/Calf
Comparison of Two Development Systems for March-born Replacement Beef Heifers
Effects of Supplemental Protein During Gestation and Grazing Sub-irrigated Meadow During the Postpartum Interval on Pregnancy Rates of Spring Calving Cows and Calf Growth
The Effects of Temperature and Temperature-Humidity Index on Pregnancy Rate in Beef Cows
Effects of Dried Distillers Grains Supplementation Frequency on Heifer Growth
Reproductive Response in Heifers Fed Soybeans During Post Weaning Development
Grazing
The Effects of Dried Distillers Grains on Heifers Consuming Low or High Quality Forage
Tree Growth and Cattle Weight Gain in a Ponderosa Pine System
Determination of Undegradable Intake Protein …
Cover & Acknowledgments: 2005 Beef Cattle Report
Cover & Acknowledgments: 2005 Beef Cattle Report
Nebraska Beef Cattle Reports
Appreciation is expressed to the following firms, associations, or agencies who provided grant support for research in the beef cattle program.
Effects Of Field Peas In Beef Finishing Diets, Erin M. Fendrick, Ivan G. Rush, Dennis R. Brink, Galen E. Erickson, David D. Baltensperger
Effects Of Field Peas In Beef Finishing Diets, Erin M. Fendrick, Ivan G. Rush, Dennis R. Brink, Galen E. Erickson, David D. Baltensperger
Nebraska Beef Cattle Reports
Feeding field peas was compared to using corn in beef finishing diets. Diets containing field peas at 0%, 20%, 40%, and 59% replacement of corn in ration DM were fed to 129 steers. Dry matter intake increased from the 0% to 40% diets, but decreased when 59% peas replaced corn compared to 40%. No significant differences in ADG and G:F were observed. Field peas can replace 59% of the corn DM in beef finishing diet with no significant differences in animal gain or feed efficiency.
Effect Of Feeding A By-Product Combination Consisting Of Wet Distillers Grains And Wet Corn Gluten Feed To Feedlot Cattle, Pablo L. Loza, Kyle J. Vander Pol, Galen E. Erickson, Terry J. Klopfenstein, Rick A. Stock
Effect Of Feeding A By-Product Combination Consisting Of Wet Distillers Grains And Wet Corn Gluten Feed To Feedlot Cattle, Pablo L. Loza, Kyle J. Vander Pol, Galen E. Erickson, Terry J. Klopfenstein, Rick A. Stock
Nebraska Beef Cattle Reports
Two-hundred-and-eighty yearling steers were used to evaluate effects of increasing levels of a corn milling byproduct combination (Blend) (50% wet corn gluten feed, 50% wet distillers grains; DM basis) and different alfalfa hay levels on feedlot performance and carcass characteristics. Levels of Blend were 0%, 25%, 50% or 75% diet DM. Alfalfa level was either kept constant at 7.5% of DM or the forage level decreased, i.e., 7.5%, 5.0%, 2.5%, and 0% alfalfa for the 0%, 25%, 50%, and 75% Blend, respectively. Steer DMI, ADG, and F:G responded quadratically (P<0.05), with the greatest ADG and improved at 25% and 50% blend. These results suggest that feeding a 50:50 combination of wet corn gluten feed and wet distillers grains for up to 50% of a diet will enhance cattle performance.
Physical And Chemical Properties Of 39 Muscles From The Beef Chuck And Round, Drew D. Von Seggern, Chris R. Calkins
Physical And Chemical Properties Of 39 Muscles From The Beef Chuck And Round, Drew D. Von Seggern, Chris R. Calkins
Nebraska Beef Cattle Reports
Twenty-seven and 12 muscles, respectively, from the chuck and round were analyzed for objective color, expressible moisture, emulsion capacity, pH, total collagen content total heme-iron content, and proximate composition. Observations of these physical and chemical properties showed a vast range of results. The range in data reveal the variation within and among muscles. Knowledge of this variation can lead to proper usage, thereby increasing value of the beef chuck and round. Quality grade had the most pronounced effects, whereas yield grade and weight showed fewer effects on these traits across all 39 muscles.
The Effects Of Phosphate Type And Potassium Lactate Level On Quality Characteristics Of Enhanced Beef Steaks, Joe L. Baumert, Roger W. Mandigo
The Effects Of Phosphate Type And Potassium Lactate Level On Quality Characteristics Of Enhanced Beef Steaks, Joe L. Baumert, Roger W. Mandigo
Nebraska Beef Cattle Reports
Beef semitendinosus steaks were used to evaluate the effects of sodium phosphate and potassium lactate on quality characteristics of enhanced beef steaks. Sodium phosphate decreased the amount of package purge and cook loss and gave the beef product a darker, redder appearance. Potassium lactate gave the product a darker, redder appearance, while increasing levels of lactate decreased total psychrotrophic (bacterial) plate counts, and decreased package purge and cook loss. Sodium phosphate and potassium lactate aid in extending shelf-life and improving quality attributes of enhanced beef steaks.
Effects Of Corn Moisture And Degradable Intake Protein Concentration On Finishing Cattle Performance, Joshua R. Benton, Galen E. Erickson, Terry J. Klopfenstein, Casey N. Macken, Kyle J. Vander Pol
Effects Of Corn Moisture And Degradable Intake Protein Concentration On Finishing Cattle Performance, Joshua R. Benton, Galen E. Erickson, Terry J. Klopfenstein, Casey N. Macken, Kyle J. Vander Pol
Nebraska Beef Cattle Reports
A finishing trial was conducted to determine the effects of corn moisture and degradable intake protein level on cattle performance. Diets consisted of 65% processed corn, either dry-rolled, high-moisture at 24% or 30% moisture, or reconstituted dry corn at 28% or 35% moisture. Degradable intake protein levels were evaluated by adding 0%, 0.45% or 0.90% urea (DM basis). Supplementing 0.45% urea increased performance and sufficiently met degradable intake protein requirements. Diets containing high-moisture and reconstituted corn improved cattle performance compared to diets containing dry-rolled corn. Increasing the moisture of ensiled corn further enhanced the feeding value of corn by improving …
Evaluation And Composition Of Beef Semitendinosus Utilizing A Novel Cooking System, Betsy L. Booren, Joe L. Baumert, Roger W. Mandigo
Evaluation And Composition Of Beef Semitendinosus Utilizing A Novel Cooking System, Betsy L. Booren, Joe L. Baumert, Roger W. Mandigo
Nebraska Beef Cattle Reports
The effects of cooking dwell time on chemical and physical properties of cooked meat and cook-out purge were examined. Cooked meat yields were not affected among cooking dwell times for samples with 12% added enhancement solution. Increasing cooking dwell time resulted in increased cooked meat tenderness. No differences were demonstrated among cook-out purge samples for moisture, ash, fat, and total collagen values regardless of cooking dwell time, pump level, and endpoint temperature of the sample. This may be beneficial to meat processors in creating an ready-to-eat product that utilizes cook-out purge.
Tree Growth And Cattle Weight Gain In A Ponderosa Pine System, James R. Brandle, Jeremy Tiller, Casey B. Wilson, Terry J. Klopfenstein
Tree Growth And Cattle Weight Gain In A Ponderosa Pine System, James R. Brandle, Jeremy Tiller, Casey B. Wilson, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
Integrated timber and livestock systems (silvopastoral) are common in several regions of the United States. Grazing of three timber stands in eastern Nebraska showed no signs of tree damage due to rubbing or soil compaction. Steer gains were lower under the silvopastoral system compared to a typical pasture system (1.05 lb/day versus 1.70 lb/day). Growth of timber in silvopastoral stands was reduced (35.0 cubic feet per year versus 37.8 cubic feet per year); however, total productivity of the silvopastoral system (timber plus livestock) was greater ($20.98/acre) than with traditional timber systems.
Effect Of High Roughage And High Energy Diets On Body Temperature, Sheryl L. Colgan, Terry L. Mader
Effect Of High Roughage And High Energy Diets On Body Temperature, Sheryl L. Colgan, Terry L. Mader
Nebraska Beef Cattle Reports
Four heifers were used in two trials comparing the effect of high energy and high roughage diets on three body temperature measurements. Body temperatures were measured in the vagina, in the ear canal near the tympanic membrane, and in the rumen. The high roughage diet lowered all three measures of body temperatures as compared with the high energy diet. Vaginal, tympanic, and ruminal temperature all appeared to effectively measure body temperature as they followed the same diurnal cycle; however, ruminal temperatures were, on average, 0.5 to 1.4°F higher than other body temperature measures.
Ethanol Distiller By-Product Phosphorus Concentration As Influenced By Corn Hybrid, Bahman Eghball
Ethanol Distiller By-Product Phosphorus Concentration As Influenced By Corn Hybrid, Bahman Eghball
Nebraska Beef Cattle Reports
Analysis of commercial corn hybrids indicated grain phosphorus concentrations ranged from 0.19% to 0.39%. This range of P concentration provides an opportunity to reduce P in the distiller’s by-products. Based on 90% starch conversion efficiency, the estimated P concentrations of ethanol by-product were 0.52% and 1.04% when using grain with P concentrations of 0.19% and 0.39%, respectively. This is a reduction of 50% when using low P instead of high P corn hybrids.
Evaluation Of Initial Implants For Finishing Steers, Jeffrey D. Folmer, Travis B. Farran, Galen E. Erickson, Terry J. Klopfenstein, Chris D. Reinhardt, Bill D. Dicke, Jim S. Drouillard
Evaluation Of Initial Implants For Finishing Steers, Jeffrey D. Folmer, Travis B. Farran, Galen E. Erickson, Terry J. Klopfenstein, Chris D. Reinhardt, Bill D. Dicke, Jim S. Drouillard
Nebraska Beef Cattle Reports
A commercial feedlot experiment utilizing 12 pens and 1038 steers evaluated initial implant strategies for feedlot steers. Steers were administered either Revalor-IS® or Synovex S® at initial processing. Both treatment groups received Revalor-S® as a terminal implant. Revalor-IS® as an initial implant improved hot carcass weight and carcass adjusted final weight; however, there was no effect on any other measure of performance or carcass characteristics. Selling steers on a carcass merit basis resulted in a similar return per head for both implant strategies. Reduced-dose combination implants may improve hot carcass weight and carcass adjusted final weight with no impact on …
Performance And Economics Of Sorting Yearling Steers By Feedlot Initial Body Weight, Jeffrey D. Folmer, Casey N. Macken, Galen E. Erickson, Terry J. Klopfenstein
Performance And Economics Of Sorting Yearling Steers By Feedlot Initial Body Weight, Jeffrey D. Folmer, Casey N. Macken, Galen E. Erickson, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
Four groups of long yearling steers were used to evaluate the effect of sorting by feedlot initial body weight on performance and feedlot economic variables during the feeding period. Steers were sorted into the lightest 25%, middle 50%, and heaviest 25%, along with a nonsorted control. Steers were marketed by sort treatment: heavy two weeks prior, middle one week after, and light three weeks after the unsorted control steers. Sorting did not affect dry matter intake, average daily gain, marbling, 12th rib fat thickness, USDA yield and quality grades, or economic analysis; however, sorting did increase days on feed, feedlot …
Effects Of Dietary Phosphorus Level In Beef Finishing Diets On Phosphorus Excretion Characteristics, Bobbi Gene Geisert, Galen E. Erickson, Terry J. Klopfenstein, Matt K. Luebbe
Effects Of Dietary Phosphorus Level In Beef Finishing Diets On Phosphorus Excretion Characteristics, Bobbi Gene Geisert, Galen E. Erickson, Terry J. Klopfenstein, Matt K. Luebbe
Nebraska Beef Cattle Reports
Five ruminally fistulated steers were fed five finishing diets containing varying levels and sources of phosphorus (P). Diets consisted of 3 brewer’s grits-based diets consisting of one with no supplemental P (0.12) and two supplemented with mineral P (0.27%, and 0.42% P), one corn-based diet (0.30% P), and one diet containing dry distillers grains (0.36% P). As P intake increased, P excretion increased and was positively correlated (r = 0.67; P < 0.01) to P intake. Most of the P excretion was fecal P averaging 88.7% of total excretion. With the exception of steers fed the 0.12% P diet with very little (0.50 g/day) urinary P, steers fed the other treatment diets excreted an average 2.1 g/day via the urine. These data suggest that P intake is positively correlated to P excretion and diet P concentration may impact route of excretion.
Reproductive Response In Heifers Fed Soybeans During Post Weaning Development, Heidi L. Harris, Andrea S. Cupp, Kelly W. Creighton, Rex Davis, James R. Teichert, Richard N. Funston
Reproductive Response In Heifers Fed Soybeans During Post Weaning Development, Heidi L. Harris, Andrea S. Cupp, Kelly W. Creighton, Rex Davis, James R. Teichert, Richard N. Funston
Nebraska Beef Cattle Reports
Three experiments were conducted to determine effects of soybeans on reproduction in heifers. In Experiment 1, heifers received whole soybeans or control diet with wet corn gluten feed for 110 days. Heifers receiving soybeans had decreased synchronization rate and delayed estrous response. Diet did not affect AI conception, AI pregnancy, or final pregnancy rates. In Experiments 2 and 3, heifers received supplements of ground soybeans or dried distillers grains. Heifers in Experiment 2 were predominantly prepubertal and supplemented 161 days. Heifers in Experiment 3 were postpubertal and supplemented 30 days. Heifers fed soybeans had larger dominant follicles than those fed …
Determination Of Undegradable Intake Protein Digestibility In Forages, Heather L. Haugen, Sarah K. Ivan, Terry J. Klopfenstein
Determination Of Undegradable Intake Protein Digestibility In Forages, Heather L. Haugen, Sarah K. Ivan, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
Digestibility of undegradable intake protein of smooth bromegrass, birdsfoot trefoil, and heat-treated alfalfa was determined using the mobile nylon bag technique. Undegradable intake protein (UIP) was determined using neutral detergent insoluble protein at 75% of the total mean retention time; 1.82 and 1.71 in June and July for brome and 1.30 and 1.94 in June and July for birdsfoot trefoil. Digestibility (%) of the UIP in brome was 38.6 and 27.1 in June and July and in birdsfoot trefoil 21.1 and 25.1. The UIP (% DM) of alfalfa dried to simulate dehydrated, sun-cured, and fresh alfalfa, was 3.13, 2.10, and …
Effect Of Different Corn Processing Methods And Roughage Levels In Feedlot Diets Containing Wet Corn Gluten Feed, Pablo L. Loza, Kyle J. Vander Pol, Galen E. Erickson, Terry J. Klopfenstein, Rick A. Stock
Effect Of Different Corn Processing Methods And Roughage Levels In Feedlot Diets Containing Wet Corn Gluten Feed, Pablo L. Loza, Kyle J. Vander Pol, Galen E. Erickson, Terry J. Klopfenstein, Rick A. Stock
Nebraska Beef Cattle Reports
Sixty steers were individually fed for a 101-day period to evaluate two corn processing methods, dry rolled (DRC) or 29% moisture reconstituted corn (HMC), in combination with two levels of alfalfa hay (0% and 7% DM) in finishing diets containing 25% wet corn gluten feed (WCGF). Final body weight was greater for the steers fed DRC compared to steers fed HMC diets. Steers receiving DRC treatments had a 16% higher DMI than HMC treatments. DMI was greater in the DRC 7% alfalfa treatment than DRC 0% alfalfa treatment, while there was no difference between the HMC treatments. There was a …
Influence Of Corn Kernel Traits On Digestibility And Ruminal Fermentation, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Wayne Fithian
Influence Of Corn Kernel Traits On Digestibility And Ruminal Fermentation, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Wayne Fithian
Nebraska Beef Cattle Reports
A metabolism trial was conducted to determine the influence of corn kernel traits on digestibility. The seven hybrids used in this study were the same as those fed in a feedlot performance trial where kernel traits were correlated to feed efficiency. These hybrids were selected to represent a range within and among kernel traits. There were no differences in total tract digestibility for hybrids that have softer endosperm. Ruminal pH parameters and intake behavior were not found to be different for animals in the metabolism trial. However, differences did exist among hybrids for volatile fatty acid production. VFA production over …
Benchmarking The Differences Between Cow And Beef Muscles, Laura B. Mink, Chris R. Calkins, D. Dwain Johnson, Alex M. Stelzleni, Bucky L. Gwartney
Benchmarking The Differences Between Cow And Beef Muscles, Laura B. Mink, Chris R. Calkins, D. Dwain Johnson, Alex M. Stelzleni, Bucky L. Gwartney
Nebraska Beef Cattle Reports
Some muscles from the different populations of cows evaluated have similar chemical and physical properties to muscles from A-maturity, USDA Select grade cattle. Perhaps those muscles from cows could be utilized in a manner that would increase their value. Fifteen carcasses were selected from five populations (fed beef cows, non-fed beef cows, fed dairy cows, non-fed dairy cows, and Select grade beef) and nine muscles per carcass were characterized. Most muscles from cows were darker in color, had higher pH values, and had greater heme iron content than muscles from younger cattle, which may be undesirable to consumers. Supplemental technology …
Direct-Fed Microbial Products For Escherichia Coli O157:H7 In Market Ready Feedlot Cattle, Robert E. Peterson, David R. Smith, Jeffrey D. Folmer, Galen E. Erickson, Susan Hinkley, Rodney A. Moxley
Direct-Fed Microbial Products For Escherichia Coli O157:H7 In Market Ready Feedlot Cattle, Robert E. Peterson, David R. Smith, Jeffrey D. Folmer, Galen E. Erickson, Susan Hinkley, Rodney A. Moxley
Nebraska Beef Cattle Reports
A clinical trial was conducted during the summers of 2002 and 2003 to evaluate the effect of a direct-fed microbial product (DFM) on the prevalence of E. coli O157:H7 in feces of feedlot steers. The DFM consisted of Lactobacillus acidophilus (NPC 747) fed at the rate of 1x109 colony forming units (CFUs) per head per day. Treatments included supplemental DFM or no supplemental DFM. Feedlot steers supplemented with DFM were 35% less likely to shed E. coli O157:H7 in the feces compared with steers that were not supplemented with the DFM. Finishing performance was not affected by adding a DFM …
Effects Of Corn Bran And Corn Steep Inclusion In Finishing Diets On Cattle Performance And Nitrogen Mass Balance, Kristi M. Sayer, Galen E. Erickson, Terry J. Klopfenstein, Kyle J. Vander Pol, Casey N. Macken
Effects Of Corn Bran And Corn Steep Inclusion In Finishing Diets On Cattle Performance And Nitrogen Mass Balance, Kristi M. Sayer, Galen E. Erickson, Terry J. Klopfenstein, Kyle J. Vander Pol, Casey N. Macken
Nebraska Beef Cattle Reports
Two experiments were conducted to evaluate the effects of decreasing digestibility of a finishing diet by replacing dry rolled corn (DRC) with corn bran, or a combination of corn bran and steep, on cattle performance and nitrogen mass balance in open feedlots. Replacement of DRC with bran had no impact on performance when steep was included in the finishing diets at 15% DM. Feeding bran and steep, in combination, was an effective means of reducing N losses in winter, as well as maintaining cattle performance throughout the year.
Pre-Rigor Water Injection And Post-Rigor Sodium Citrate Treatment On Beef Tenderness, Bethany M. Sitz, Pennapa Matayompong, Christian D. Perversi, Chris R. Calkins
Pre-Rigor Water Injection And Post-Rigor Sodium Citrate Treatment On Beef Tenderness, Bethany M. Sitz, Pennapa Matayompong, Christian D. Perversi, Chris R. Calkins
Nebraska Beef Cattle Reports
Thoracic limbs from 20 beef steers were used as post-rigor controls, prerigor controls (removed pre-rigor), or treated with combinations of sodium citrate and/or water to evaluate the effect of citrate on meat tenderness. Shear force values on steaks from the infraspinatus, supraspinatus and triceps brachii muscles revealed citratetreated muscles were more tender than water and post-rigor control treatments. It appears sodium citrate can tenderize meat independent of water injection.
Degradable Intake Protein In Finishing Diets Containing Dried Distillers Grains, Kyle J. Vander Pol, Galen E. Erickson, Terry J. Klopfenstein
Degradable Intake Protein In Finishing Diets Containing Dried Distillers Grains, Kyle J. Vander Pol, Galen E. Erickson, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
An experiment evaluated the effects of finishing diets containing dried distillers grains supplemented with degradable intake protein on performance and carcass characteristics of yearling heifers. Diets contained 10% or 20% dried distillers grains (DDG) with or without 0.80 or 0.63% urea. Degradable intake protein balances were -192 (10% DDG no urea), 58 (10% DDG + urea), -111 (20% DDG), and 81 (20% DDG + urea) grams/day. No response in performance or carcass characteristics were observed among treatments. The results indicate sufficient amounts of urea were recycled to the rumen to meet the degradable intake protein requirement. Therefore, supplemental degradable intake …
Composting Of Feedlot Manure: Compost Characteristics, Crop Yields And Application Rates, Casey B. Wilson, Galen E. Erickson, Terry J. Klopfenstein, Walker Luedtke, Mark A. Schroeder
Composting Of Feedlot Manure: Compost Characteristics, Crop Yields And Application Rates, Casey B. Wilson, Galen E. Erickson, Terry J. Klopfenstein, Walker Luedtke, Mark A. Schroeder
Nebraska Beef Cattle Reports
Crop yields were measured using no-compost check strips in large-scale production fields to determine the impact of a one-time compost application. Adding compost to irrigated corn, irrigated soybeans and dryland corn acres significantly increased yields. Altering the application rate from 0 to 20 to 40 ton per acre did not significantly increase grain yield. However, all yields made biological improvements under irrigated conditions when compost was added.
Reducing Diet Digestibility And Increasing Pen Cleaning Frequency: Effects On Nitrogen Losses And Compost Nitrogen Recovery, Travis B. Farran, Galen E. Erickson, Terry J. Klopfenstein
Reducing Diet Digestibility And Increasing Pen Cleaning Frequency: Effects On Nitrogen Losses And Compost Nitrogen Recovery, Travis B. Farran, Galen E. Erickson, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
A finishing trial evaluated effects of diet and management on N losses from open feedlots and compost N recovery. Steer calves were fed in 12 pens from November to May. Nitrogen losses from pens were compared by feeding corn bran (30% diet DM) designed to increase OM excretion and by increasing pen cleaning frequency in a 2 x 2 factorial design. Pens were either cleaned monthly or once at the end of the feeding period. Corn bran negatively affected feed/gain by 8.1% and reduced ADG by 4.4%. Dietary treatment and pen cleaning frequency interacted for N balance in the feedlot. …
Packaging Effects On Shelf-Life And Sensory Traits Of Enhanced Beef, Chris R. Calkins, Mike L. Buford
Packaging Effects On Shelf-Life And Sensory Traits Of Enhanced Beef, Chris R. Calkins, Mike L. Buford
Nebraska Beef Cattle Reports
Beef strip loins and top sirloins were enhanced and steaks were stored in one of three packaging systems: high-oxygen barrier trays, low-oxygen peelable trays, or vacuum packages. After dark storage for 8 or 15 days, simulating distribution time, steaks were displayed up to 3 days in a retail case. Steak discoloration and sensory traits were rated. Extended dark storage and retail display were detrimental to flavor and color. In this study, the best packaging systems were those that minimized opportunities for oxidation — vacuum packaging and, as long as dark storage was limited to eight days, high oxygen packaging.
The Effects Of Temperature And Temperature-Humidity Index On Pregnancy Rate In Beef Cows, Jamee Amundson, Terry L. Mader, Richard J. Rasby, Q. Steven Hu
The Effects Of Temperature And Temperature-Humidity Index On Pregnancy Rate In Beef Cows, Jamee Amundson, Terry L. Mader, Richard J. Rasby, Q. Steven Hu
Nebraska Beef Cattle Reports
Ten years of records from a 150- head beef cow herd were used to determine the relationship of temperature and temperature-humidity index (THI) on pregnancy rate in beef cows. Pregnancy rate of the herd for the duration of the experiment averaged 92%. There was a linear relationship between average 30-day temperature and pregnancy rate during the first 30 days of the breeding season. Average THI greater than 65 for the first 30 days of the breeding season tended to decrease pregnancy rate in the first 30 days, but there was no effect on herd pregnancy rate. If the 60-day average …
Effects Of Corn Moisture And Length Of Ensiling On Dry Matter Digestibility And Rumen Degradable Protein, Joshua R. Benton, Terry J. Klopfenstein, Galen E. Erickson
Effects Of Corn Moisture And Length Of Ensiling On Dry Matter Digestibility And Rumen Degradable Protein, Joshua R. Benton, Terry J. Klopfenstein, Galen E. Erickson
Nebraska Beef Cattle Reports
An in situ trial was conducted to evaluate effects of corn moisture and length of ensiling on dry matter digestibility (ISDMD) and degradable intake protein (DIP). Corn treatments consisted of dry-rolled, high-moisture, and reconstituted dry corn. Corn samples were incubated in situ for 22 hours and ISDMD (%) and DIP (% of CP) values were calculated. Both high moisture and reconstituted corn had higher ISDMD and DIP values than dry-rolled corn. Dry matter digestibility and degradable intake protein increased for high-moisture and reconstituted corn when either moisture or length of ensiling was increased.