Life Sciences Commons^™

Impact Of Winter Supplementation Of May Calving Cows And Heifer Development System In Two Different Breeding Seasons On Subsequent Growth And Reproduction, Shelby A. Springman, Alicia C. Lansford, Jacqueline A. Musgrave Musgrave, John Nollette, Andy Applegarth, Richard N. Funston

Nebraska Beef Cattle Reports

In Exp. 1, May-calving cows were utilized to evaluate the effects of winter supplementation on heifer progeny. Cows grazed either dormant upland winter range with or without a protein supplement or grazed dormant meadow with or without a protein supplement. In Exp. 2, replacement heifers from March and May calving herds were offered ad libitum meadow hay and 4 lb/d supplement or grazed meadow and offered 1 lb/d supplement from mid-January to mid-April. Calf weaning BW and ADG from birth to weaning was less for calves from cows grazing winter range with no supplement compared with all other dam treatments. …

Using A Cured Meat Model System To Investigate Factors That Influence Cured Color Development, Jennifer A. Posthuma, Faith D. Rasmussen, Gary A. Sullivan Sullivan

Nebraska Beef Cattle Reports

Producing cured meats manufactured with natural ingredients could impact cured meat characteristics, including color. The objective of this study was to determine the effects of nitrite source (sodium nitrite or cultured celery juice powder), reducing agents (no reducing compound or sodium erythorbate/ ascorbic acid), and holding times prior to cooking on cured color development in a meat model system. The addition of reducing compounds had the largest impact on cured color development and reduced residual nitrite in a cured meat model system. Treatments cured with sodium nitrite had slightly greater cured color development than treatments cured with celery juice powder. …

Repeated Calm Handling Can Lead To More Docile Cattle, Jamie T. Parham, Amy E. Tanner, Mark L. Wahlberg Wahlberg, W. S. Swecker Jr., Ronald M. Lewis

Nebraska Beef Cattle Reports

Changes in temperament in heifers when handled either frequently or infrequently were evaluated subjectively based on their behavior when restrained in (chute score) and exiting from (exit score) a squeeze chute. Chute scores decreased over time–a favorable direction–with more dramatic declines in heifers handled more frequently. Heifers with higher chute scores on the first day of handling had the largest reduction in score. Exit scores changed less over time. Chute score therefore may be more indicative of acclimation to a novel environment than exit score. Both scores appear to offer a fast, easy and inexpensive way to quantify docility in …

Experience Improves The Reliability Of Subjective Measurements Of Temperament In Beef Cattle, Jaime T. Praham, Amy E. Tanner, Mark L. Wahlberg Wahlberg, W. S. Swecker Jr., Ronald M. Lewis

Nebraska Beef Cattle Reports

Reliability of experienced and inexperienced observers when assessing the behavior of cattle when restrained in a squeeze chute (chute score), and when exiting the chute (exit score), was compared. Overall, experienced observers had higher reliability than inexperienced observers. Increasing the number of individuals scoring an animal decreased the degree of agreement. However, within an acceptable tolerance for difference in scores, such disagreement may be beneficial; it allows for subtlety in interpretations of temperament, which when averaged, may better reflect docility. Reliabilities were higher for exit score than chute score. This may reflect the complexity of the trait being evaluated, with …

Effects Of Kernel Processing At Harvest Of Brown Midrib Corn Silage On Finishing Performance Of Steers, Lauren A. Ovinge, F. Henry Hilscher, Curtis J. Bittner Bittner, Bradley M. Boyd, John N. Anderson, Galen E. Erickson

Nebraska Beef Cattle Reports

A 2 × 3 factorial finishing study evaluated kernel processing in three corn silage hybrids on finishing performance of yearling steers fed 40% silage. The three hybrids included a control corn silage (CON), a brown midrib (bm3), and a brown midrib with a softer endosperm (bm3-EXP). No interactions were observed between hybrids and kernel processing (P > 0.45). Feeding both bm3 hybrids increased dry matter intake and average daily gain over CON (P < 0.01). Cattle fed bm3-EXP and bm3 had lower feed to gain than CON (P = 0.04), with no differences between the two brown midrib hybrids. Feeding silage that has undergone kernel processing decreased dry matter intake with similar average daily gain, which decreased feed to gain by 2.6% at 40% inclusion compared to non-processed silage (P = 0.10). The improvement in silage is calculated to be 6.5% (2.6/40) when kernel processing was utilized as compared to not kernel processing the corn silage hybrids.

The Effect Of Inoculants On Nutrient Losses Of Corn Silage And High-Moisture Corn Stored In Mini Silos, Colton R. Oney, Jana L. Gramkow, Andrea K. Watson Watson, Galen E. Erickson, Jim C. Macdonald, M. K. Biddlecome

Nebraska Beef Cattle Reports

Two experiments were conducted to determine the effects of inoculants (BONSILAGE CORN 200G and BONSILAGE HMC 200G) containing Lactobacillus buchneri, Lactobacillus plantarum and Pediococcus acidilactici on nutrient losses and aerobic stability of corn silage and high moisture corn. Corn silage and high moisture corn were inoculated and stored in mini silos with nutrient loss and spoilage characterizations at 30, 90, and 120 days with multiple inoculation levels. Longer ensiling times led to greater total acid production. The higher levels of inoculation led to lower total acid production and higher pH. Inoculating corn silage and high moisture corn also affected …

Antimicrobial Interventions And Application Time Effects On Ground Beef Quality, Ashley R. Mccoy, Dennis E. Burson, Gary A. Sullivan Sullivan

Nebraska Beef Cattle Reports

Small business meat processors can use organic acid antimicrobial interventions to control Shiga toxin-producing E. coli (STEC) when producing ground beef; however, many small producers are concerned about the impact on ground beef quality. The effects of two commonly used organic acids, lactic acid and peroxyacetic acid, were evaluated at short (15 seconds) or extended (3 minutes) raw material dip times on ground beef quality parameters. Beef trim dipped in lactic acid for 3 minutes had a reduction in total aerobic bacteria plate count, but also increased ground beef discoloration and lipid oxidation during retail display. Use of a shorter …

Late Summer Planted Oat-Brassica Forage Quality Changes During Winter Grazing, Mary E. Lenz, Jordan L. Cox, Kristin E. Hales Hales, Hannah C. Wilson, Mary E. Drewnoski

Nebraska Beef Cattle Reports

Oat, radish, and turnip samples were taken on pivots being grazed from November through January in Clay Center, Nebraska. The objective was to determine how the quality changed throughout the winter. The forage was observed to be high-quality (highly digestibility with moderate CP content). Digestibility did decline over this period but minimal changes in CP content were observed. From early November to early January, the digestibility of oats appeared to decline more (10% unit decline) than turnip and radish leaves (5% unit decrease). However, digestibility (67% IVOMD) and CP content (15%) of oats in early January were still as high …

Impact Of Syngenta Enogen Feed Corn On Finishing Cattle Performance And Carcass Characteristics, Melissa L. Jolly-Breithaupt, Curtis J. Bittner, F. Henry Hilscher Hilscher, Galen E. Erickson, James C. Macdonald, Matt K. Luebbe

Nebraska Beef Cattle Reports

Two finishing experiments were conducted to evaluate Syngenta Enogen Feed Corn containing an alpha amylase enzyme trait compared to the near negative isoline control corn at two locations on cattle performance and carcass characteristics. No statistical differences were observed for final BW, DMI, ADG, or F:G for steers fed Syngenta Enogen Feed Corn versus the near negative isoline control corn. Fat depth and calculated yield grade were greater for steers fed Syngenta Enogen Feed Corn; however, HCW and marbling scores were not different. Previous research has observed a 2.6% to 16.4% decrease in F:G when Syngenta Enogen Feed Corn was …

Chopped Sugar Beets As A Component Of Beef Cow Diets, Karla H. Jenkins, Jacob A. Hansen

Nebraska Beef Cattle Reports

Sugar beets not accepted for human consumption were evaluated as an energy source in a limit fed ration for confined beef cows. Initial and final body weight and body condition score were not different between wheat straw based diets containing wet distillers grains and either chopped sugar beets or corn. Body condition score change tended to be greater for the diet containing corn. However, cows on both treatments finished the study with a body condition score of 5.7. Chopped sugar beets mixed with wheat straw and stored in an agricultural bag underwent ensiling and did not result in choking issues. …

Evaluation Of Brown Midrib Corn Silage For Growing And Backgrounding Beef Steers, F. Henry Hilscher, Curtis J. Bittner, John N. Anderson Anderson, Galen E. Erickson

Nebraska Beef Cattle Reports

A growing study evaluated three corn silage hybrids for growing crossbred steers. The three hybrids were: a standard corn silage hybrid which served as the control, a brown midrib hybrid, and an experimental brown mid rib hybrid with a softer endosperm. Intake, ADG, and ending BW were greater for steers fed either brown mid rib silage compared to control, but not different between the brown mid rib or experimental brown mid rib silage. While brown mid rib hybrids had greater DMI and ADG, there was no difference in F:G between all three treatments. Feeding brown mid rib hybrids as corn …

Nutrient Digestibility And Fermentation Of Brown Midrib Corn Fed To Growing Beef Steers, F. Henry Hilscher, Melissa L. Jolly-Breithaupt, Jana L. Gramkow Gramkow, Hannah C. Wilson, Mitch M. Norman, John N. Anderson, Galen E. Erickson

Nebraska Beef Cattle Reports

A digestion study evaluated three corn silage hybrids for growing crossbred steers. The three hybrids were: a standard corn silage hybrid which served as the control, a brown midrib hybrid (bm3), and an experimental bm3 hybrid with a softer endosperm. Both bm3 hybrids had greater organic matter and fiber digestibility compared to the control corn silage. However, no differences were observed between the two bm3 hybrids. Rumen pH was reduced for BM3 and BM3-EXP compared to the control suggesting greater rumen fermentation. In vitro gas production was increased for the bm3 hybrids compared to the control further supporting greater rumen …

Effect Of Ingredients And Packaging On Color Of High Pressure Processed Ground Beef, Jhinuk Gupta, Chad G. Bower, George A. Cavender Cavender, Gary A. Sullivan

Nebraska Beef Cattle Reports

High pressure processing is a non-thermal pasteurization technique to control pathogens, like E. coli. However, color changes in raw beef induced by processing restrict high pressure processing’s use within the beef industry. The objectives of this study were to investigate the effects of adding curing agents (nitrite) and packaging with or without reducing compounds (ascorbic acid/erythorbate) on color retention in high pressure processed ground beef. High pressure processing resulted in a detrimental effect on the color of the beef patties for all treatments. Lightness and yellowness increased and redness decreased after high pressure processing. The effect remained the same throughout …

Analyses Of Birthdate And Growth In Beef Heifers Categorized By Puberty And Pregnancy Status, Aline Gomes Da Silva, Andy Roberts, T. L. Meyers, Richard N. Funston

Nebraska Beef Cattle Reports

Heifer records were retrospectively evaluated to see if Julian birthdate, cycling status prior to breeding, and body weight collected from weaning through final pregnancy diagnosis differed when heifers were categorized by 5 different approaches: 1) pubertal status prior to estrous synchronization, 2) whether or not detected in estrus at AI, 3) heifers impregnated by AI vs all other heifers, 4) final pregnancy status, and 5) a 5-way classification accounting for AI and pregnancy status (AI pregnant, heifers subjected to AI that subsequently conceived to bull, heifers not AI that were impregnated by bull, heifers subjected to AI that were not …

Impact Of Corn Oil Removal From Modified Distillers Grains Plus Solubles And Supplemental Corn Oil On Finishing Cattle Performance, Jordan E. Burhoop, Curtis J. Bittner, F. Henry Hilscher Hilscher, Matt K. Luebbe, Jim C. Macdonald, Galen E. Erickson

Nebraska Beef Cattle Reports

A finishing study was conducted to evaluate removal of corn oil from modified distillers grains plus solubles (MDGS) and replacement of supplemental corn oil on finishing cattle performance. Four treatments were evaluated: a corn control diet, 40% de-oiled MDGS, 38% de-oiled MDGS plus 2% corn oil to equal the fat content of full fat MDGS, or 40% full fat MDGS. There was a significant improvement in ADG and F:G for cattle fed de-oiled MDGS plus oil compared to other treatments. Cattle fed full fat MDGS had numerically lower ADG and numerically poorer F:G (3.7%) compared with cattle fed MDGS plus …

Evaluation Of Revalor-Xh For Beef Heifers Fed Different Days On Feed, Robert G. Bondurant, Marshall N. Streeter, Galen E. Erickson Erickson, James C. Macdonald, Matt K. Luebbe

Nebraska Beef Cattle Reports

Heifers were treated with either no implant, an initial implant of Revalor-200 and re-implanted with Revalor-200, or Revalor-XH and assigned to one of four serial slaughter harvests at 151, 165, 179, and 193 days on feed to determine the effects on feedlot performance and carcass characteristics. Implanting heifers increased final BW, ADG and HCW while decreasing marbling score and improving feed efficiency compared to non-implanted heifers. Increasing days on feed decreased ADG while increasing feed efficiency, HCW, fat thickness, marbling score, and calculated yield grade. By increasing HCW sold, implanting revenue can be maximized, assuming added risk for YG discounts.

Diversity And Phylogenetic Relationships Of European Species Of Crepidostomum Braun, 1900 (Trematoda: Allocreadiidae) Based On Rdna, With Special Reference To Crepidostomum Oschmarini Zhokhov & Pugacheva, 1998, Romualda Petkevičiūtė, Virmantas Stunžėnas, Alexander E. Zhokhov, Larisa G. Poddubnaya, Gražina Stanevičiūtė

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Background

Within the genus Crepidostomum Braun, 1900, identification of species and taxonomic decisions made only on the basis of adult morphology have resulted in great problems associated with evaluating actual diversity and validity of species. Life cycle data, while equal in importance to adult characters, are scarce, controversial or incomplete for most Crepidostomum spp. In this study, rDNA sequences generated from adult and larval Crepidostomum spp. and some other allocreadiid species were analyzed to reveal the diversity and phylogenetic relationships of the species and their host range. Detailed morphological description based on light microscopy, SEM tegumental surface topography and genetic …

Nebraska Grazing Conference Proceedings, 2018, Center For Grassland Studies, University Of Nebraska-Lincoln

Nebraska Grazing Conference Proceedings

Pasture Monitoring Sesion

Overview of Choquette Ranch by Jim Choquette

Field Applications of Pasture and Ecological Monitoring by Christine Su

Keeping Human Knowledge at the Center of Technology by Christine Su

Field Monitoring Exercise with Christine Su, Jim O’Rourke, Bethany Johnston, Brad Schick, Brent Plugge, Ben Beckman, and Jace Stott

Prescribed Fire, Bird Monitoring, and Butterfly Date by Andrew Pierson

Strategies for Rangeland Monitoring by Jim O’Rourke

Pasture Monitoring: Field Experience by Jeff Nichols, Beau Mathewson, and Mitch Stephenson

Ranch Succession Planning Session

Keeping Your Ranching Operation in the Family for Future Generations by Ron Hanson

Sharing Our Ranch Succession …