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2006

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Articles 271 - 300 of 590

Full-Text Articles in Animal Sciences

Predation And Cathemerality. Comparing The Impact Of Predators On The Activity Patterns Of Lemurids And Ceboids., Ian C. Colquhoun Jan 2006

Predation And Cathemerality. Comparing The Impact Of Predators On The Activity Patterns Of Lemurids And Ceboids., Ian C. Colquhoun

Anthropology Publications

The removal, or absence, of predatory species could be a contributing proximate factor to the rise of primate cathemerality. But predators themselves can also be cathemeral, so cathemerality could well be an evolutionary stable strategy. From a comparative perspective, it appears that the effect of predatory species cannot provide a unitary explanation for cathemerality. Varying distributions and population densities of predators, especially raptors, may be key factors in owl monkey (Aotus) cathemerality, but temperature and lunar cycle variation have also been implicated. In Madagascar, while raptors are potential predators of lemur species, the cathemerality of Eulemur species coincides with that …

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Fish & Wildlife News: Winter/Spring 2006 Jan 2006

Fish & Wildlife News: Winter/Spring 2006

Fish and Wildlife News

Contents:
News Briefs / 4
Faces in the Field / 11
The Galapagos of the North / 12
Looking for a Legend / 15
Wheelin’ Sportsmen / 18
Living with Grizzlies / 20
Science & Technology / 22
From the Hill / 23
Fish Tales / 23
Transitions / 24
Honors / 26
In Memoriam / 27

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Constructed Ponds As Mitigated Habitat For The Wood Frog (Rana Sylvatica Leconte) And The Spotted Salamander (Ambystoma Maculatum Shaw) In West Virginia, Celeste Dawn Good Jan 2006

Constructed Ponds As Mitigated Habitat For The Wood Frog (Rana Sylvatica Leconte) And The Spotted Salamander (Ambystoma Maculatum Shaw) In West Virginia, Celeste Dawn Good

Theses, Dissertations and Capstones

Many forest dwelling amphibians depend upon aquatic breeding habitats, making them susceptible to habitat changes. To determine if amphibian use of temporary pools occurred, 9 ponds were constructed in 3 forested areas on the MeadWestvaco Wildlife and Ecosystem Research Forest. Studies were conducted in 6 ponds during 2004, and all 9 in 2005 using drift fences. Trapped amphibians were measured and given a pond specific mark with visible implant elastomers. A significant difference was found between low and high elevation sites for juvenile R. sylvatica snout-to-vent length. No significant differences were found for soil, air or water temperatures between sites …

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Effects Of A Single Foot Rot Incident On Weight Performance Of Feedlot Steers, G. K. Tibbetts, T. M. Devin, D. Griffin, J. E. Keen, G. P. Rupp Jan 2006

Effects Of A Single Foot Rot Incident On Weight Performance Of Feedlot Steers, G. K. Tibbetts, T. M. Devin, D. Griffin, J. E. Keen, G. P. Rupp

Roman L. Hruska U.S. Meat Animal Research Center: Reports

Feedlot performance records from the U.S. Meat Animal Research Center feedlot for 1993 through 2000 were analyzed to evaluate the impact of foot rot on ADG and total days on feed. Records from the original pool of 36,755 bull, steer, and heifer calves were sorted so that only steers that had a single foot rot incidence and no other morbidities were included in the data set (7,100 steers). To roughly pattern these data to industry production practices, time of foot rot insult during feeding was divided into 3 production periods: starting (0 to 60 d), growing (61 to 120 d), …

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Differential Expression Of Immune Response Genes In Steller Sea Lions (Eumetopias Jubatus): An Indicator Of Ecosystem Health?, Lizabeth Bowen, Brian Aldridge, Kimberlee Beckmen, Tom Gelatt, Lorrie Rea, Kathy Burek, Ken Pitcher, Jeffrey L. Stott Jan 2006

Differential Expression Of Immune Response Genes In Steller Sea Lions (Eumetopias Jubatus): An Indicator Of Ecosystem Health?, Lizabeth Bowen, Brian Aldridge, Kimberlee Beckmen, Tom Gelatt, Lorrie Rea, Kathy Burek, Ken Pitcher, Jeffrey L. Stott

United States Department of Commerce: Staff Publications

Characterization of the polygenic and polymorphic features of the Steller sea lion major histocompatibility complex (MHC) provides an ideal window for evaluating immunologic vigor of the population and identifying emergence of new genotypes that reflect ecosystem pressures. MHC genotyping can be used to measure the potential immunologic vigor of a population. However, since ecosystem-induced changes to MHC genotype can be slow to emerge, measurement of differential expression of these genes can potentially provide real-time evidence of immunologic perturbations. MHC DRB genes were cloned and sequenced using peripheral blood mononuclear leukocytes derived from 10 Steller sea lions from southeast Alaska, Prince …

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Explanation Of Statistics Used In This Report Jan 2006

Explanation Of Statistics Used In This Report

Nebraska Swine Reports

Pigs treated alike vary in performance due to their different genetic makeup and to environmental effect we cannot completely control. When a group of pigs is randomly allotted to treatments it is nearly impossible to get an “equal” group of pigs on each treatment. The natural variability among pigs and the number of pigs per treatment determine the expected variation among treatment groups due to random sampling.

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Effects Of Nutrition During Gilt Development On Lifetime Productivity Of Sows Of Two Prolific Maternal Lines: Growth And Puberty Characteristics Of Rep 1 Gilts, Beth Maricle, Matthew Anderson, Jeffrey Perkins, Donald Mcclure, Laura Albrecht, Jose-Roman Moreno-Salgado, Phillip S. Miller, Rodger K. Johnson Jan 2006

Effects Of Nutrition During Gilt Development On Lifetime Productivity Of Sows Of Two Prolific Maternal Lines: Growth And Puberty Characteristics Of Rep 1 Gilts, Beth Maricle, Matthew Anderson, Jeffrey Perkins, Donald Mcclure, Laura Albrecht, Jose-Roman Moreno-Salgado, Phillip S. Miller, Rodger K. Johnson

Nebraska Swine Reports

This report is an annual update of an ongoing experiment initiated in 2005 to investigate effects of energy restriction during gilt development on reproduction through four parities. Gilts of two genetic lines expected to differ in rate of growth are used and are developed with either ad libitum access to feed or are restricted in energy to 75% of ad libitum amounts from approximately 120 days of age to breeding. Semen of the same sires, an industry maternal line, was used to produce gilts of both lines, but their dams were from two uniquely different populations. Dams of one line …

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Odor Footprint Tool Progress: Regional Output Resources, Richard R. Stowell, Dennis D. Schulte, Richard K. Koelsch, Christopher G. Henry Jan 2006

Odor Footprint Tool Progress: Regional Output Resources, Richard R. Stowell, Dennis D. Schulte, Richard K. Koelsch, Christopher G. Henry

Nebraska Swine Reports

This article highlights practical applications for resources being developed using the Odor Footprint Tool and the effects of differing regional weather patterns on needed setbacks by describing resources created for the regions surrounding Norfolk and Lincoln, Neb. The Odor Footprint Tool is being developed to help people assess the odor impact of new and expanded animal production facilities on the surrounding areas and use science- based information to establish minimum setback distances. Progress continues to be made toward development of a system that can be used in the field to develop site-specific odor footprints. As an intermediate step in this …

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Effect Of Low-Protein Non-Amino Acid Supplemented Diet And Ractopamine (Paylean®) On Growth Performance And Serum Urea Concentration Of Late-Finishing Pigs, Roman Moreno, Robert Fischer, Phillip S. Miller Jan 2006

Effect Of Low-Protein Non-Amino Acid Supplemented Diet And Ractopamine (Paylean®) On Growth Performance And Serum Urea Concentration Of Late-Finishing Pigs, Roman Moreno, Robert Fischer, Phillip S. Miller

Nebraska Swine Reports

When feeding excessive amounts of protein, the nitrogen eliminated by the pigs in swine facilities has an important impact in the environment. Therefore, it is important to define nutritional strategies that promote a more efficient use of protein. This study was conducted to evaluate the effect of a low-protein non-amino acid supplemented diet and ractopamine (Paylean®) on performance of late-finishing pigs. Thirty-six finishing barrows and gilts with an initial body weight of 153.4 lb were used in a 42- day experiment. Pigs were penned individually and had ad libitum access to feed and water. The pigs were randomly allotted to …

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Effect Of Dietary Crude Protein Versus Crystalline Amino Acids On Growth Performance, Serum Insulin-Like Growth Factor-I Concentration, And Igf-I Mrna Expression In Growing-Finishing Gilts, Robert Fischer, Ruth Diedrichsen, Debra Clompton, Andrea Cupp, Phillip S. Miller Jan 2006

Effect Of Dietary Crude Protein Versus Crystalline Amino Acids On Growth Performance, Serum Insulin-Like Growth Factor-I Concentration, And Igf-I Mrna Expression In Growing-Finishing Gilts, Robert Fischer, Ruth Diedrichsen, Debra Clompton, Andrea Cupp, Phillip S. Miller

Nebraska Swine Reports

Fifty-six crossbred gilts with an initial body weight of 73 lb were used in a 26-day growth study. The pigs were randomly allocated to one of seven dietary treatments and individually penned (8 replicates/treatment). The dietary treatments consisted of four standard corn-soybean meal diets, which were formulated by changing the corn and soybean meal (10, 14, 18, and 22% CP) ratio and three low-protein, amino acid-supplemented diets formulated to contain similar lysine, methionine, tryptophan, and threonine concentrations as the corn-soybean meal diets (10% CP + AA,14% CP + AA, and 18% CP + AA). Pig and feeder weights were recorded …

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Animal Science Alumni Newsletter, Winter 2006 Jan 2006

Animal Science Alumni Newsletter, Winter 2006

Department of Animal Science: Departmental News

Contents:

Nielsen Named Kermit Wagner Distinguished Professor of Animal Science
Animal Science Alumnus is UNL Masters Week Recipient
From the Department Head’s Desk
Animal Breeding Symposium Honors Dr. Dale Van Vleck
New Faces for Old Places
New Faculty
Larry Larson to Retire
2006 SSR New Investigator Award
UNL Animal Science Students Benefit from the NC/NCW Annual Convention in More Ways than One
Block & Bridle Activities
2007 Upcoming Activities
Ambassador Activities
Beermann and Calkins Attend Congress in Ireland
Mexico 2006 – A Trip to Remember
Former Student Fernando Lagos Experiences
Former Graduates Receive CASNR Awards
Recent Department Awards and Recognitions …

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The Breeding Ecology And Natural History Of Ambystomatid Salamanders In An Ephemeral Wetland In Mason County, West Virginia, S. Douglas Kaylor Jan 2006

The Breeding Ecology And Natural History Of Ambystomatid Salamanders In An Ephemeral Wetland In Mason County, West Virginia, S. Douglas Kaylor

Theses, Dissertations and Capstones

A forested ephemeral wetland in Mason County, WV, documented to contain 4 of 5 Ambystoma species found in the state, was studied to learn about population sizes, breeding cycles, and habitat use. Minnow traps were placed along three drift fences with additional traps placed throughout the study area. From February 5 to March 27, 2005, 85 captured adults were identified to species, marked by elastomer injection for mark-recapture analysis, and measured for morphometrics. Larval salamanders were identified, staged, measured, and returned. Egg clutches were mapped and counted. Mark-recapture analysis suggests the A. texanum population size is between 635 and 735 …

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Environmental Effects On Pregnancy Rate In Beef Cattle, J. L. Amundson, Terry L. Mader, Richard J. Rasby, Q. S. Hu Jan 2006

Environmental Effects On Pregnancy Rate In Beef Cattle, J. L. Amundson, Terry L. Mader, Richard J. Rasby, Q. S. Hu

Department of Animal Science: Faculty Publications

Ten years of calving records were examined from Bos taurus crossbred cows (mean of 182 cows/ yr) to quantify the effects of environmental conditions during the breeding season on pregnancy rate. Estimated breeding dates were determined by subtracting 283 d from the calving date. Relationships were determined between the proportion of cows bred during the periods from the beginning of the breeding season until d 21, 42, and 60 of the breeding season and the corresponding environmental variables. Weather data were compiled from a weather station located approximately 20 km from the research site. Average daily temperature and relative humidity …

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Correlated Responses In Maternal Performance Following Divergent Selection For Heat Loss In Mice, J. M. Mcdonald, Merlyn . K. Nielsen Jan 2006

Correlated Responses In Maternal Performance Following Divergent Selection For Heat Loss In Mice, J. M. Mcdonald, Merlyn . K. Nielsen

Department of Animal Science: Faculty Publications

Divergent selection in mice was applied in 3 independent replicates for high (maintenance high; MH) and low (maintenance low; ML) heat loss for 16 generations. An unselected control (maintenance control; MC) was also maintained in all replicates. Selection ceased for 26 generations; heat-loss measurement and selection resumed at generation 42. Lactation performance, dam weight, dam feed intake, and efficiency of production of pup weight were recorded or calculated for MH and ML dams in all 3 replicates at generation 46 or 47 with the objective of determining whether selection for heat loss has created correlated responses in maternal performance. One-half …

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Gis-Based Analysis Of Ice-Breeding Seal Strandings In The Gulf Of Maine, David Harris Ph.D., Sat Gupta Jan 2006

Gis-Based Analysis Of Ice-Breeding Seal Strandings In The Gulf Of Maine, David Harris Ph.D., Sat Gupta

Faculty Publications

Phoca groenlandica (harp seals) and Cystophora cristata (hooded seals), two species of ice-breeding seals, are being sighted more frequently onshore in the Gulf of Maine since 1990, but little is known about their behavior in this ecosystem. We obtained records of 904 ice-breeding seal stranding locations in the Gulf of Maine between 1996 and 2002 from NOAA Fisheries and used a geographic information system (GIS) to conduct group-wise comparisons by species (using non-parametric techniques), and to determine the predictors of high seal-stranding density (using ordinal logistic regression analysis). Compared to harp seals, hooded seals stranded closer to deep water, farther …

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Effects Of Supplementing Beef Cows With Lipid From Whole Corn Germ, Jeremy Martin, Richard J. Rasby, Dennis R. Brink, Ron Lindquist, Duane Keisler, Stephen D. Kachman, Mark Dragastin Jan 2006

Effects Of Supplementing Beef Cows With Lipid From Whole Corn Germ, Jeremy Martin, Richard J. Rasby, Dennis R. Brink, Ron Lindquist, Duane Keisler, Stephen D. Kachman, Mark Dragastin

Nebraska Beef Cattle Reports

A two-year study was conducted with crossbred beef cows to determine whether supplementation with fat from whole corn germ either pre- or postpartum influenced ovarian activity before the breeding season, pregnancy rates, calving interval, calf performance, or serum leptin concentration. Supplements were fed for approximately 45 days before or 45 days after calving. Cows supplemented prepartum with fat from whole corn germ had shorter calving intervals. Ovarian activity before the breeding season, pregnancy rate, calf growth, and serum leptin were not different between groups.

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Effects Of Optaflexx Fed In Combination With Mga On Feedlot Heifer Performance, William A. Grififn, Galen E. Erickson, Bill Dicke, Robert J. Cooper, D. J. Jordon, William Moseley, Gary Sides, Jim S. Drouillard, Terry J. Klopfenstein Jan 2006

Effects Of Optaflexx Fed In Combination With Mga On Feedlot Heifer Performance, William A. Grififn, Galen E. Erickson, Bill Dicke, Robert J. Cooper, D. J. Jordon, William Moseley, Gary Sides, Jim S. Drouillard, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

A commercial feedlot experiment was conducted using 1,807 heifers to evaluate the effects of Optaflexx fed in combination with MGA on finishing heifer performance. In heifers receiving MGA throughout the entire 126-143 day feeding period, feeding Optaflexx for the last 31-38 days increased ADG and hot carcass weight compared to heifers fed MGA but not Optaflexx. Heifers fed MGA and Optaflexx had increased DMI, improved feed efficiency and increased final live weight. Carcass quality measurements were not influenced by treatment.

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Frontmatter And Contents Jan 2006

Frontmatter And Contents

Nebraska Beef Cattle Reports

ACKNOWLEDGMENTS

Appreciation is expressed to the following firms, associations, or agencies who provided grant support for research in the beef cattle program.

Abengoa Bionergy Corp., York, Nebraska
Beef Board, Centennial, Colorado
Bioniche Lifes Services, Belleville, Ontario, Canada
Cargill Corn Milling, Blair, Nebraska
Elanco Animal Health, Indianapolis, Indiana
Intervet, Millsboro, Delaware
J.C. Robinson Seed Co., Waterloo, Nebraska
Montana State University, Boseman, Montana
Nebraska Cattlemen, Inc., Lincoln, Nebraska
Nebraska Corn Board, Lincoln, Nebraska
Nutrition Physiology Corp., Amarillo, Texas
Pfizer Inc., New York, New York
Soypass Royalty Funds, University of Nebraska, Lincoln, Nebraska

Appreciation is also expressed to the following firms who provided …

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Effects Of Supplementing Lactating, June-Calving Cows On Second-Calf Pregnancy Rates, Aaron Stalker, Kelly Creighton, Jacqueline A. Musgrave, Don C. Adams, Terry J. Klopfenstein Jan 2006

Effects Of Supplementing Lactating, June-Calving Cows On Second-Calf Pregnancy Rates, Aaron Stalker, Kelly Creighton, Jacqueline A. Musgrave, Don C. Adams, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

A two year experiment evaluated the influence of supplementation pre-breeding on second-calf pregnancy rates in June-calving heifers. For 60 days before start of the breeding season, heifers were assigned to one of two treatments: supplementation of dried distillers grains (1.5 lb/day) to meet energy and metabolizable protein requirements or unsupplemented control. Supplementation improved body condition score during the supplementation period and resulted in increased body condition score at weaning. In year 1, feeding supplement to the dam did not change calf weight gain but feeding supplement increased calf weight in year 2. Pregnancy rates were 90% and not changed by …

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Effects Of Pre- And Postpartum Nutrition On Reproduction In Spring Calving Cows And Calf Feedlot Performance, Leslie Aaron Stalker, Don C. Adams, Richard N. Funston, Terry J. Klopfenstein Jan 2006

Effects Of Pre- And Postpartum Nutrition On Reproduction In Spring Calving Cows And Calf Feedlot Performance, Leslie Aaron Stalker, Don C. Adams, Richard N. Funston, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

Crossbred, spring calving cows were used in a three-year experiment to evaluate the influence of supplemental protein prepartum and grazing sub-irrigated meadow postpartum on pregnancy rates and calf feedlot performance. Feeding supplement prepartum improved body condition score pre-calving and pre-breeding and increased the percentage of live calves at weaning but did not affect pregnancy rate or steer calf feedlot performance. Grazing sub-irrigated meadow did not change pregnancy rates or feedlot performance.

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Effects Of Dam Nutrition On Growth And Reproductive Performance Of Heifer Calves, Jeremy Martin, Kim Vonnahme, Greg Lardy, Don C. Adams, Richard N. Funston Jan 2006

Effects Of Dam Nutrition On Growth And Reproductive Performance Of Heifer Calves, Jeremy Martin, Kim Vonnahme, Greg Lardy, Don C. Adams, Richard N. Funston

Nebraska Beef Cattle Reports

A 3-year experiment evaluated the effects of maternal nutrition on growth and reproductive performance of heifer calves. Supplementing cows with protein during late gestation resulted in heifers that were heavier at weaning and breeding, had higher pregnancy rates, and calved earlier. Allowing cows to graze meadows after calving improved calf weaning weight but not heifer reproductive performance. Heifers from cows that were fed hay after calving had reduced DMI and improved residual feed intake if their dams were supplemented with protein during gestation, but ADG and G:F were not affected by dam supplementation or spring feeding strategies.

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Vascular Endothelial Growth Factor Mrna Isoforms 120 And 164 Are Differentially Regulated Prior To Ovulation, Robin A. Ten Broeck, Debra T. Clopton, Jeremy L. Martin, Rebecca C. Bott, Karl V. Moline, Jeffrey W. Bergman, Andrea S. Cupp Jan 2006

Vascular Endothelial Growth Factor Mrna Isoforms 120 And 164 Are Differentially Regulated Prior To Ovulation, Robin A. Ten Broeck, Debra T. Clopton, Jeremy L. Martin, Rebecca C. Bott, Karl V. Moline, Jeffrey W. Bergman, Andrea S. Cupp

Nebraska Beef Cattle Reports

Vascular Endothelial Growth Factor (VEGF) is produced by cells surrounding the egg in the follicle prior to ovulation. If VEGF is inhibited, ovulation does not occur. The VEGF gene can be spliced to produce different protein isoforms which have specific functions. Our objective was to determine if VEGF 120 and 164 mRNA isoforms are differentially regulated in the preovulatory follicle. From our studies, VEGF isoforms are differentially regulated during both CL regression and after a simulated LH surge. Differences observed in VEGF isoform regulation may allow for manipulation of ovulation in the beef cow.

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Bull Exposure, When Combined With A Seven-Day Mga Synchronization, Does Not Enhance Conception Rates In Cows, Michelle M. Baltes, Rebecca C. Bott, Ryann Mcfee, Joseph S. Schulz, Candice F. Toombs, Jeffrey W. Bergman, Karl V. Moline, Andrea S. Cupp Jan 2006

Bull Exposure, When Combined With A Seven-Day Mga Synchronization, Does Not Enhance Conception Rates In Cows, Michelle M. Baltes, Rebecca C. Bott, Ryann Mcfee, Joseph S. Schulz, Candice F. Toombs, Jeffrey W. Bergman, Karl V. Moline, Andrea S. Cupp

Nebraska Beef Cattle Reports

The purpose of the current experiments was to determine if cows exposed to sterile bulls (epididyectomized) in combination with a 7-day MGA treatment would have an advantage in conception rates to cows not exposed to bulls. Bull exposure increased percentage of cows cycling prior to synchronization and reduced the time from calving to initiation of cycling. Overall there was not an increase in conception rates to timed TAI or in total pregnancy rates in bull exposed MGA treated cows when compared to cows not exposed to bulls.

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Effect Of Fat And Undegradable Intake Protein In Dried Distillers Grains On Performance Of Cattle Grazing Smooth Bromegrass Pastures, James C. Macdonald, Galen E. Erickson, Terry J. Klopfenstein Jan 2006

Effect Of Fat And Undegradable Intake Protein In Dried Distillers Grains On Performance Of Cattle Grazing Smooth Bromegrass Pastures, James C. Macdonald, Galen E. Erickson, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

Growing heifers grazing smooth bromegrass pastures were supplemented daily with dry distillers grains, corn bran + corn oil, or corn bran + corn gluten meal to determine the relative contributions of fat and undegradable intake protein in dried distillers grains to animal performance. For cattle supplemented from 0 to 0.75% body weight with dried distillers grains, ADG was improved by 0.14 lb for every 0.10% BW increase in dried distillers grains supplementation. Cattle supplemented with corn bran + corn gluten meal gained 38% as much as cattle supplemented with dry distillers grains while cattle supplemented with corn bran + corn …

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Influence Of Dried Distillers Grains Supplementation Frequency On Forage Digestibility And Growth Performance, Leslie Aaron Stalker, Don C. Adams, Terry J. Klopfenstein Jan 2006

Influence Of Dried Distillers Grains Supplementation Frequency On Forage Digestibility And Growth Performance, Leslie Aaron Stalker, Don C. Adams, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

Two experiments evaluated the influence of dried distillers grains supplementation frequency on forage digestibility and growth of yearling steers. In Exp. 1, treatments were dried distillers grains fed at 16.7% of the diet either daily, every other day or every third day. Diet DM, OM and NDF digestibility decreased linearly as dried distillers grains supplementation occurred less frequently. In Exp. 2, 48 crossbred steers were used in a two-year study to compare corn/soybean meal with dried distillers grains as winter supplements. Steers performed similarly when supplements were fed 6 days/week but performance was decreased when dried distillers grains was fed …

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Dried Distillers Grains Supplementation Of Calves Grazing Corn Residue, Kristin H. Gustad, Terry J. Klopfenstein, Galen E. Erickson, Kyle J. Vander Pol, James C. Macdonald, Matthew A. Greenquist Jan 2006

Dried Distillers Grains Supplementation Of Calves Grazing Corn Residue, Kristin H. Gustad, Terry J. Klopfenstein, Galen E. Erickson, Kyle J. Vander Pol, James C. Macdonald, Matthew A. Greenquist

Nebraska Beef Cattle Reports

Dried distillers grains (DDGS) were fed to weanling steer calves grazing nonirrigated corn residue to determine daily gain response and residue intake response to increasing levels of DDGS (from 1.5 to 6.5 lb/day in 1 lb increments). The DDGS was fed individually using Calan electronic gates. Daily gain increased from 0.9 (1.5 lb DDGS) to 1.8 (6.5 lb DDGS) lb/day . Forage intake decreased from 11.3 (1.5 lb DDGS) to 8.3 (6.5 lb DDGS) lb/day . Results provide information for selecting a DDGS supplementation level to achieve a target gain.

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Effect Of Corn Hybrid And Processing Method On Site And Extent Of Nutrient Digestibility Using The Mobile Bag Technique, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Wayne Fithian Jan 2006

Effect Of Corn Hybrid And Processing Method On Site And Extent Of Nutrient Digestibility Using The Mobile Bag Technique, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Wayne Fithian

Nebraska Beef Cattle Reports

The influence of corn hybrid and processing method onsite and extent of DM, starch, and protein digestibility was determined using the mobile bag technique. Samples consisted of three hybrids with known digestibility and feeding value processed as either dryrolled corn (DRC) or high-moisture corn (HMC). Ruminal and total tract nutrient digestibilities were greater for HMC compared to DRC. Differences among hybrids existed for all variables measured except ruminal starch digestibility and degradable intake protein. Undegradable intake protein (UIP) digestibility was greater for HMC compared to DRC (77.8 and 73.7%, respectively). However, UIP was lower for HMC than DRC. Differences among …

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Influence Of Corn Hybrid And Processing Method On Digestibility And Ruminal Fermentation, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Wayne Fithian Jan 2006

Influence Of Corn Hybrid And Processing Method On Digestibility And Ruminal Fermentation, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein, Wayne Fithian

Nebraska Beef Cattle Reports

Three hybrids with different kernel traits and feeding value were selected from a previous study to determine effects of corn hybrid and processing method (high-moisture corn (HMC), or dry-rolled corn DRC)) on nutrient digestibility and ruminal fermentation. DMI, intake rate, and total time spent eating were greater for HMC than DRC. Changes in ruminal pH and pH variance were also greater for HMC compared to DRC. Total-tract nutrient digestibility was influenced by processing method and hybrid. Nutrient digestibilities were greatest for hybrid 1, and greater for HMC compared to DRC. There was a hybrid by processing method interaction for molar …

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Influence Of Corn Hybrid On Kernel Traits, Flint W. Harrelson, Galen E. Erickson, Terry J. Klopfenstein, Lenis Alton Nelson, David S. Jackson Jan 2006

Influence Of Corn Hybrid On Kernel Traits, Flint W. Harrelson, Galen E. Erickson, Terry J. Klopfenstein, Lenis Alton Nelson, David S. Jackson

Nebraska Beef Cattle Reports

Sixty commercially available corn hybrids were used to identify kernel traits that may be used as an indicator of feeding value to cattle. Three separate tests were conducted and 12 traits were evaluated for each hybrid. Most production traits were negatively correlated or not correlated to physical traits making them less indicative of cattle performance compared to some lab techniques. Based on the dry matter disappearance in the rumen, a harder kernel will be more efficiently digested. An approximately 10% change in dry matter disappearance is shown between the most and least digestible hybrid. Physical kernel traits can be helpful …

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Influence Of Corn Hybrid, Kernel Traits, And Dry Rolling Or Steam Flaking On Digestibility, Flint W. Harrelson, Galen E. Erickson, Terry J. Klopfenstein, Wayne A. Fithian, Patrick M. Clark, David S. Jackson Jan 2006

Influence Of Corn Hybrid, Kernel Traits, And Dry Rolling Or Steam Flaking On Digestibility, Flint W. Harrelson, Galen E. Erickson, Terry J. Klopfenstein, Wayne A. Fithian, Patrick M. Clark, David S. Jackson

Nebraska Beef Cattle Reports

Seventy-two commercially available corn hybrids were used to quantify the existing range in kernel characteristics shown to correlate with improved feeding value to cattle. Twelve hybrids were steam flaked at two different bulk densities. Hybrids were tested for kernel size, hardness, in situ digestibility, and starch use. For dry rolled corn, a 27% difference in dry matter disappearance was found across hybrids. For flaking, a 6% to 29% improvement over dry rolled corn was observed. An 8% to 36% advantage for flaking in starch digestibility was also found. The results of this trial suggest there can be an interaction between …

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