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Articles 31 - 50 of 50
Full-Text Articles in Entire DC Network
Impact Of Inoculum Source For In Vitro And In Situ Digestion Procedures Performed On Corn Residue And Grass Samples, Hannah C. Hamilton, Jana L. Harding, Jim C. Macdonald Donald, Terry J. Klopfenstein
Impact Of Inoculum Source For In Vitro And In Situ Digestion Procedures Performed On Corn Residue And Grass Samples, Hannah C. Hamilton, Jana L. Harding, Jim C. Macdonald Donald, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
A study was conducted to assess the effects of inoculum source at time of incubation on neutral detergent fiber digestibility, dry matter digestibility, and organic matter digestibility of corn residue samples. Digestibility of neutral detergent fiber was greater for both grass and corn residue when inoculum source came from steers consuming a high corn residue diet. Digestibility of dry matter and organic matter were not different between grass and corn residue. It is not necessary to maintain two sets of donors for in vitro or in situ procedures involving corn residue. However, donor diet affects neutral detergent fiber digestibility estimates …
Effects Of Field Pea Supplementation On Digestibility And Rumen Volatile Fatty Acid Concentration Of Diets Containing High And Low Quality Forages, Hannah L. Greenwell, Jana L. Gramkow, Melissa L. Jolly-Breithaupt Breithaupt, Jim C. Macdonald, Karla Jenkins
Effects Of Field Pea Supplementation On Digestibility And Rumen Volatile Fatty Acid Concentration Of Diets Containing High And Low Quality Forages, Hannah L. Greenwell, Jana L. Gramkow, Melissa L. Jolly-Breithaupt Breithaupt, Jim C. Macdonald, Karla Jenkins
Nebraska Beef Cattle Reports
Five ruminally cannulated steers were used to evaluate the effects of supplementation (no supplement, field peas, or dry rolled corn; 0.43% BW) with high and low quality forages on diet digestibility and rumen volatile fatty acid concentrations. Th e inclusion of field peas increased dry matter intake and organic matter digestibility over dry rolled corn and unsupplemented steers. Propionate proportions were less for field peas and control treatments than dry rolled corn, while acetate proportions increased in field peas, and control treatments as compared to dry rolled corn. As a result, acetate to propionate ratio was reduced when dry rolled …
Perceptions Of Crop Consultants And Producers On Grazing Corn Residue In Nebraska, Jordan L. Cox, Kristen M. Ulmer, Manir Rakkar Rakkar, Lisa Franzen-Castle, Humberto Blanco-Canqui, Mary Drewnoski, Jim C. Macdonald, Richard J. Rasby
Perceptions Of Crop Consultants And Producers On Grazing Corn Residue In Nebraska, Jordan L. Cox, Kristen M. Ulmer, Manir Rakkar Rakkar, Lisa Franzen-Castle, Humberto Blanco-Canqui, Mary Drewnoski, Jim C. Macdonald, Richard J. Rasby
Nebraska Beef Cattle Reports
A survey was conducted to explore factors influencing corn residue grazing recommendations by crop consultants and producer practices in Nebraska. Approximately 80% of consultants recommended grazing corn residue, while 63% of producers allowed grazing. Of producers who did not graze, about 50% cited concerns related to soil compaction, inconvenience (lack of water, fencing, and land/equipment damage), and lack of access to livestock. Producers who allowed and consultants who recommended grazing were more likely to perceive that grazing residue increased subsequent grain yields. Most consultants (56.0%) and producers (43.8%) reported making decisions in regards to grazing based on their own observation. …
Nutrient Content Of Summer-Planted Oats After Corn Harvest And Grazing Performance, Kristen M. Ulmer, Robert G. Bondurant, Jana L. Gramkow Gramkow, Mary E. Drewnoski, James C. Macdonald
Nutrient Content Of Summer-Planted Oats After Corn Harvest And Grazing Performance, Kristen M. Ulmer, Robert G. Bondurant, Jana L. Gramkow Gramkow, Mary E. Drewnoski, James C. Macdonald
Nebraska Beef Cattle Reports
Annual forages provide producers with an alternative grazing source in the fall. A cover crop grazing study was conducted following corn harvest to evaluate the steer ADG and yield of summer sown oats and turnips planted after either high moisture corn or corn silage production. Th e gain of steers grazing oats aft er silage was 1.29 lb/day, while the gain of steers grazing corn residue and oats aft er high moisture corn was 0.72 lb/day. Average oat forage production aft er silage harvest was 2857 lb/acre, while oat production following corn harvest was 523 lb/ acre. Fall forage production …
Development Of Terminal And Maternal Economic Selection Indices In Beefmaster Cattle, Kathleen P. Ochsner, Michael D. Macneil, Ronald M. Lewis, Matthew L. Spangler
Development Of Terminal And Maternal Economic Selection Indices In Beefmaster Cattle, Kathleen P. Ochsner, Michael D. Macneil, Ronald M. Lewis, Matthew L. Spangler
Nebraska Beef Cattle Reports
Two economic selection indices were developed for Beefmaster cattle, one for a terminal objective and one for a maternal objective. The terminal index was developed assuming bulls would be mated to mature cows with all resulting progeny harvested. The maternal index was developed assuming bulls would be mated to a combination of heifers and mature cows, with resulting progeny retained as replacements or sold at weaning. Relative economic values for the terminal objective traits hot carcass weight, marbling score, ribeye area, 12th- rib fat and feed intake were 91.29, 17.01, 8.38,- 7.07 and- 29.66, respectively. Relative economic values for the …
Organic Acids And Applications Used For Reduction Of E. Coli On Beef Shoulder Clods Used For Ground Beef, Kelly A. Mccarty, Gary A. Sullivan, Dennis E. Burson Burson
Organic Acids And Applications Used For Reduction Of E. Coli On Beef Shoulder Clods Used For Ground Beef, Kelly A. Mccarty, Gary A. Sullivan, Dennis E. Burson Burson
Nebraska Beef Cattle Reports
Small processors normally grind beef shoulder clods for ground beef that have not been previously tested for shiga toxin-producing E. coli. Three antimicrobial solutions were applied using three application methods to beef sub-primals to evaluate the effectiveness of reducing E. coli and the effects on quality attributes. Antimicrobials effectively reduced Rifampicin resistant E. coli. However, none of the treatments changed color attributes or total plate counts compared to a control. These results suggest that an appropriate antimicrobial solution and application method can be selected for use by small meat processors without affecting quality attributes.
Shelf Life Of Ground Beef From Cattle Fed Distillers Grains Containing Different Amounts Of Oil, Faith D. Rasmussen, Chad G. Bower, Gary A. Sullivan Sullivan
Shelf Life Of Ground Beef From Cattle Fed Distillers Grains Containing Different Amounts Of Oil, Faith D. Rasmussen, Chad G. Bower, Gary A. Sullivan Sullivan
Nebraska Beef Cattle Reports
Beef shoulder clods were collected from steers fed one of four finishing diets: no distillers grains and three with distillers grains containing different amounts of oil. Raw ground beef patties were evaluated for changes in objective color, discoloration, and lipid oxidation during simulated retail display (7 days). Cooked beef links in refrigerated (18 days) and frozen storage (198 days) were analyzed for lipid oxidation throughout shelf life. Fatty acid profiles were evaluated in lean, subcutaneous fat, and ground composite samples. All distillers grain diets increased C18:2 and polyunsaturated fatty acids in beef. There were no dietary differences in lipid oxidation …
Rumen Undegradable Protein And Bambermycins Supplementation Of Calves Grazing Corn Residue, Cody A. Welchons, Robert G. Bondurant, F. Henry Hilscher Hilscher, Jim C. Macdonald, Galen E. Erickson
Rumen Undegradable Protein And Bambermycins Supplementation Of Calves Grazing Corn Residue, Cody A. Welchons, Robert G. Bondurant, F. Henry Hilscher Hilscher, Jim C. Macdonald, Galen E. Erickson
Nebraska Beef Cattle Reports
Steer calves grazing non- irrigated corn residue were supplemented with a corn residue and by- product pellet that contained either Soypass, soybean meal, or processed soybean meal at a rate of 4 lb / d. Additionally, a supplement was fed at 1 lb / d that provided 0 or 20 mg / steer daily of bambermycins (Gainpro®). There was no interaction between bambermycins inclusion and pellet type. Likewise, there was no effect of pellet type or bambermycins on ending BW or ADG. In order to maximize gain of calves grazing corn residue it is important to provide a supplement that …
Effect Of Heifer Development System On Reproduction And Subsequent Gain As A Pregnant Heifer, Shelby A. Springman, Hazy Rae Nielson, Tonya L. Meyer, Mike Kirby, Jim Teichert, Richard N. Funston
Effect Of Heifer Development System On Reproduction And Subsequent Gain As A Pregnant Heifer, Shelby A. Springman, Hazy Rae Nielson, Tonya L. Meyer, Mike Kirby, Jim Teichert, Richard N. Funston
Nebraska Beef Cattle Reports
Weaned heifers grazed corn residue, upland range, or were fed 1 of 2 drylot diets differing in energy. Heifer development diets did not impact their resulting AI or final pregnancy rates. Cost per pregnant heifer was similar among treatments. A subset of AI- pregnant heifers was placed in a Calan Broadbent individual feeding system during late gestation. As a pregnant heifer, feed efficiency was not impacted by development system. These results indicate producers may utilize their most readily available and/or cost- effective feed resources with no detriment to pregnancy rates or feed efficiency as first- calf heifers.
Effect Of Long- Term Corn Residue Grazing On Soil Properties, Manbir K. Rakkar, Humberto Blanco, Mary E. Drewnoski Drewnoski, Jim C. Macdonald, Terry J. Klopfenstein
Effect Of Long- Term Corn Residue Grazing On Soil Properties, Manbir K. Rakkar, Humberto Blanco, Mary E. Drewnoski Drewnoski, Jim C. Macdonald, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
An experiment was conducted to evaluate the effect of long- term (16 years) corn residue grazing with cattle on soil compaction, soil structure, soil organic matter, and nutrients. Three treatments: 1) fall grazing (November through January; 1.8 to 2.5 AUM/ac), 2) spring grazing (February to middle April; 2.3 to 3.1 AUM/ac), and 3) control (no grazing) under a no- till irrigated corn- soybean system in eastern Nebraska were studied. Crop yields were increased and soil bulk density and cone index (parameters of soil compaction), wet soil aggregate stability (parameter of soil structural quality), and organic matter content were not affected …
In Situ Digestibility Of Residue Parts Of Corn Planted In Different Populations And Row Widths, Viviane B. Ferrari, Janessa J. Updike, Jana Harding Harding, Keith Glewen, Terry J. Klopfenstein, Jim C. Macdonald
In Situ Digestibility Of Residue Parts Of Corn Planted In Different Populations And Row Widths, Viviane B. Ferrari, Janessa J. Updike, Jana Harding Harding, Keith Glewen, Terry J. Klopfenstein, Jim C. Macdonald
Nebraska Beef Cattle Reports
Plant density can be changed by altering row width and/or number of plants within a row. The use of narrower rows at seeding may increase yield and reduce plant-toplant competition. Corn seeds were planted at 2 row widths (15 and 30- inch rows) and 3 plant populations (25,200, 35,000 and 54,000 seeds / acre). Samples of corn residue were collected 4 dates (October 8, October 24, November 5 and November 19) postharvest and separated into cob, stem, leaf and husk to determine changes in quality over time. Th e greatest plant population increased the NDF content and NDF digestibility of …
Effect Of Increasing Supplemental Rumen Undegradable Protein (Rup) On Performance Of Calves Fed A Silage Growing Diet, Colton R. Oney, F. Henry Hilscher, Robert G. Bondurant Bondurant, Andrea K. Watson, Galen E. Erickson, Terry J. Klopfenstein
Effect Of Increasing Supplemental Rumen Undegradable Protein (Rup) On Performance Of Calves Fed A Silage Growing Diet, Colton R. Oney, F. Henry Hilscher, Robert G. Bondurant Bondurant, Andrea K. Watson, Galen E. Erickson, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
A growing study evaluated the effects of increasing supplemental rumen undegradable protein (RUP) on performance of calves fed an 85% corn silage diet. Five levels of supplementation were evaluated with 12 individually fed steers per level of supplement. Supplement levels consisted of 0, 3.25, 6.5, 9.75 and 13% supplemental RUP (% of diet DM) fed as a blend of 60% Soypass and 40% Empyreal. Increasing supplemental RUP in the diet increased ending body weight and average daily gain linearly, and decreased F:G linearly while DMI remained constant among treatments. As cattle grew from 600 to 730 lb, F:G was improved …
Comparison Of Diets Collected From Esophageally Fistulated Cows To Forage Quality Estimated From Fecal Analysis, Bethany M. Johnston, Jay D. Jenkins, Jacqueline A. Musgrave Musgrave, L. A. Stalker, Mitchell B. Stephenson
Comparison Of Diets Collected From Esophageally Fistulated Cows To Forage Quality Estimated From Fecal Analysis, Bethany M. Johnston, Jay D. Jenkins, Jacqueline A. Musgrave Musgrave, L. A. Stalker, Mitchell B. Stephenson
Nebraska Beef Cattle Reports
Differences in forage quality (crude protein and energy) were analyzed between esophageally fistulated diets, analysis of fecal samples with Nutrition Balance Analyzer (NUTBAL) analysis, and analysis of handclipped forage samples. On upland range sites, hand- clipped samples provided forage quality estimates that were closer to esophageally fistulated diets than samples analyzed with the NUTBAL analysis. Aft er one year of data collection, it appears that there may be some inconstancies with the NUTBAL analysis for estimates on rangeland forage quality in the Nebraska Sandhills. More data is needed to verify these results; however, making management supplementations decisions solely on the …
Summer Cocktail Forage Research In The Panhandle Of Nebraska, Karla H. Jenkins, Cody Creech, Robert Higgins Higgins, Josh Buttle
Summer Cocktail Forage Research In The Panhandle Of Nebraska, Karla H. Jenkins, Cody Creech, Robert Higgins Higgins, Josh Buttle
Nebraska Beef Cattle Reports
Four annual forage mixtures containing brown mid- rib sorghum sudangrass or German foxtail millet, cowpeas or soybeans, and forage collards were compared to the sorghum sudangrass or millet as monocultures in the Nebraska High Plains on dryland acres to determine the tonnage, crude protein, and digestibility available for beef cattle. Th e forage mixtures and the millet resulted in greater crude protein than the sorghum sudangrass. Total digestible nutrients of the mixers were similar. Sorghum sudangrass resulted in the most tonnage. These forage options could have been hayed or windrow grazed in the fall and would have likely resulted in …
Effects Of Wintering System On Cow And Calf Performance In A Summer- Calving Intensive Production System, Shelby E. Gardine, Jason M. Warner, Curtis J. Bittner Bittner, Robert G. Bondurant, Karla Jenkins, Richard J. Rasby, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein
Effects Of Wintering System On Cow And Calf Performance In A Summer- Calving Intensive Production System, Shelby E. Gardine, Jason M. Warner, Curtis J. Bittner Bittner, Robert G. Bondurant, Karla Jenkins, Richard J. Rasby, Matt K. Luebbe, Galen E. Erickson, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
A study evaluated the effects of two wintering systems (cornstalk grazing and drylot feeding) on cow- calf performance in a summer- calving intensively managed cowherd at two locations. Grazing cow- calf pairs on cornstalks resulted in lower ending BW of cows and reduced ADG of calves when compared to drylot cow- calf pairs at weaning. A partial budget of incorporating winter cornstalk grazing into an intensive production system suggests that cows wintered on cornstalks were $136.85 more profitable when compared to cows wintered in the drylot.
Effects Of Modified Distillers Grains And Corn Ratios As Supplements In Diets Varying In Forage Quality On Performance Of Growing Beef Steers, Viviane B. Ferrari, Robert G. Bondurant, Galen E. Erickson Erickson, Terry J. Klopfenstein, Jim C. Macdonald
Effects Of Modified Distillers Grains And Corn Ratios As Supplements In Diets Varying In Forage Quality On Performance Of Growing Beef Steers, Viviane B. Ferrari, Robert G. Bondurant, Galen E. Erickson Erickson, Terry J. Klopfenstein, Jim C. Macdonald
Nebraska Beef Cattle Reports
Distillers grains (DG) have been intensively used for beef production, but prices relative to corn vary such that it may be beneficial to displace a portion of DG with corn in certain circumstances. Four ratios of supplemental energy (40% of diet DM) from modified distillers grains and corn (100:0, 80:20, 60:40, and 40:60) were supplemented in one of 3 forage diets (56% of diet DM) and evaluated for performance. Forages were high (brome hay + sorghum silage) or low quality. Low quality forages were corn residue baled through conventional rake and bale, or by disengaging the spreader on the combine …
Fatty Acid Composition Of Beef Fed Omnigen- Af At Receiving Or Finishing, Katherine I. Domenech, Michael D. Chao, Joe O. Buntyn Buntyn, Ty B. Schmidt, Chris Calkins
Fatty Acid Composition Of Beef Fed Omnigen- Af At Receiving Or Finishing, Katherine I. Domenech, Michael D. Chao, Joe O. Buntyn Buntyn, Ty B. Schmidt, Chris Calkins
Nebraska Beef Cattle Reports
Beef fatty acid profiles and superoxide dismutase activity were determined for cattle receiving OmniGen- AF supplementation (a patented nutritional supplement) at receiving (first 28 d at the feedlot) or throughout finishing (all 210 d of finishing) vs. a control group (non- supplemented). Th e most meaningful change in fatty acid composition from inclusion of OmniGen- AF was total poly- unsaturated fatty acid (PUFA) content where beef from the finishing group had more PUFA content in relation to the receiving group and was not different from the control group. Despite this increase in PUFA, cattle supplemented through finishing tended to have …
Evaluation Of Plant- Waxes To Estimate Forage Intake In Grazing Cattle, Hannah C. Hamilton, Jerry D. Volesky, Robert M. Lewis Lewis
Evaluation Of Plant- Waxes To Estimate Forage Intake In Grazing Cattle, Hannah C. Hamilton, Jerry D. Volesky, Robert M. Lewis Lewis
Nebraska Beef Cattle Reports
Although key to the efficiency of a cattle operation, feed intake is challenging to evaluate in a grazing setting. However, even within forage- based systems, plant- wax markers may be used to predict dietary choices and feed intake. Plant- waxes are a complex mixture of lipids found on the surface of plants. When sufficiently unique among plants, the composition of diets can be determined from the pattern of these compounds in the forages ingested. These markers were used to delineate the parts of the corn plant and, separately, 8 western rangeland grasses and legumes. Using plant waxes, the components of …
Timed Insemination Vs. Modified Estrus Detection In Beef Heifers, Benjamin T. Tibbitts, Tonya L. Meyer, Dan J. Kelly Kelly, Richard N. Funston
Timed Insemination Vs. Modified Estrus Detection In Beef Heifers, Benjamin T. Tibbitts, Tonya L. Meyer, Dan J. Kelly Kelly, Richard N. Funston
Nebraska Beef Cattle Reports
Th e objective of this study was to compare a modified estrus detection and fixed time AI vs. no estrus detection and fixed time AI on subsequent pregnancy rates. Yearling heifers were estrus synchronized and AI at 72 ± 2 h after prostaglandin injection. In one group estrus was not detected and all heifers received gonadotropin releasing hormone at the fixed- time AI; in the other group estrus was detected at 58 ± 2 and 70 ± 2 h after prostaglandin and inseminated in the following order at 72 ± 2 h: heifers in estrus at 58 h, heifers in …
Impact Of Heifer Development System In Two Different Breeding Seasons, Shelby A. Springman, Hazy Rae Nielson, Jacqueline A. Musgrave Musgrave, John Nollette, Andy Applegarth, Richard N. Funston
Impact Of Heifer Development System In Two Different Breeding Seasons, Shelby A. Springman, Hazy Rae Nielson, Jacqueline A. Musgrave Musgrave, John Nollette, Andy Applegarth, Richard N. Funston
Nebraska Beef Cattle Reports
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. Heifers fed hay gained more during the treatment; however, heifers grazing meadow experienced compensatory gain, resulting in similar body weight at pregnancy diagnosis in both calving herds. Pregnancy rates were similar between treatment groups in March and May heifers. A reduced input winter management system is a viable option to maintain pregnancy rates in early and late summer breeding seasons.