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Articles 901 - 930 of 1498

Full-Text Articles in Meat Science

Evaluation Of The Relative Contribution Of Protein In Distillers Grains In Finishing Diets On Animal Performance, Zachary E. Carlson, Galen E. Erickson, James C. Macdonald Donald, Matt K. Luebbe Jan 2016

Evaluation Of The Relative Contribution Of Protein In Distillers Grains In Finishing Diets On Animal Performance, Zachary E. Carlson, Galen E. Erickson, James C. Macdonald Donald, Matt K. Luebbe

Nebraska Beef Cattle Reports

A finishing study evaluated the relative contributions of protein from wet distillers grains plus solubles (WDGS) on feedlot performance and carcass characteristics. The protein portion of WDGS was mimicked by corn gluten meal (CGM). Increasing WDGS inclusion from 0 to 40% increased final body weight and gain, decreased intakes, and improved feed efficiency. When CGM was fed to equal protein concentration as WDGS, final body weight and gain increased, and feed efficiency improved. Adding solubles to CGM did not improve feed efficiency. Th e feeding value of CGM was similar to distillers grains, suggesting protein has a major role in …

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Modifying Different Components Of Distillers Grains And The Impact On Feedlot Performance, Zachary E. Carlson, Curtis J. Bittner, Dirk Burken Burken, Galen E. Erickson, James C. Macdonald Jan 2016

Modifying Different Components Of Distillers Grains And The Impact On Feedlot Performance, Zachary E. Carlson, Curtis J. Bittner, Dirk Burken Burken, Galen E. Erickson, James C. Macdonald

Nebraska Beef Cattle Reports

A finishing study evaluated the effects of altering distillers grains composition on feedlot performance and carcass characteristics. Replacing dried distillers grains with isolated bran, solubles, and protein did not result in performance similar to commodity dried distillers grains. Exchanging bran for non- pelleted treated corn stover increased intake, reduced efficiency, and decreased 12th rib fat. Cattle fed pelleted treated corn stover had decreased intakes, but similar efficiency and gain as non- pelleted treated corn stover. As solubles increased and replaced protein, intakes increased quadratically and 12th rib fat linearly decreased however, all other performance and carcass characteristics were not different.

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Effects Of Dietary Antioxidant Supplementation On Cattle Finished With 30% Wet Distillers Grains Plus Solubles On Fatty Acid Profiles And Display Life, Michael D. Chao, Katherine I. Domenech, Hope R. Voegele Voegele, Emery K. Kunze, Chris R. Calkins Jan 2016

Effects Of Dietary Antioxidant Supplementation On Cattle Finished With 30% Wet Distillers Grains Plus Solubles On Fatty Acid Profiles And Display Life, Michael D. Chao, Katherine I. Domenech, Hope R. Voegele Voegele, Emery K. Kunze, Chris R. Calkins

Nebraska Beef Cattle Reports

Steers were finished on either 0% wet distillers grains plus solubles or 30% wet distillers grains plus solubles with four antioxidant treatments to evaluate the effects of finishing diets containing wet distillers grains plus solubles, vitamin E and Agrado Plus on beef fatty acid profiles, discoloration and lipid oxidation of retail- displayed beef. Th e inclusion of 30% wet distillers grains plus solubles increased total polyunsaturated fatty acids of beef, but did not promote discoloration or lipid oxidation compared to the 0% wet distillers grains plus solubles diet. In both diets, feeding vitamin E alone or vitamin E+ Agrado Plus …

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Effect Of Feeding Distillers Grains And Supplementing With Dietary Antioxidants On Ground Beef Shelf Life And Fatty Acid Profile, Brandy D. Cleveland, Gary Sullivan Jan 2016

Effect Of Feeding Distillers Grains And Supplementing With Dietary Antioxidants On Ground Beef Shelf Life And Fatty Acid Profile, Brandy D. Cleveland, Gary Sullivan

Nebraska Beef Cattle Reports

Ground beef from cattle fed corn- based diets with no wet distillers grains, wet distillers grains plus solubles, wet distillers grains + 1000 IU/hd/d vitamin E, wet distillers grains + 150 ppm/hd/d, Ethoxyquin/ TBHQ (Agrado Plus, Novus International, St. Louis, MO), or wet distillers grains + 500 IU/hd/d vitamin E + 150 ppm/hd/d Ethoxyquin/ TBHQ during the finishing phase were compared to analyze lipid oxidation and fatty acid composition. All ground beef lipid oxidation (raw or cooked) increased over time. Raw beef samples from cattle supplemented vitamin E sustained lower TBARS values than corn aft er 2 d of simulated …

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Impact Of Feeding Distillers Grains Or Isolated Components In Distillers Grains On Feedlot Performance And Carcass Traits, Brianna B. Conroy, Matt K. Luebbe, Galen E. Erickson Erickson, Jim C. Macdonald, Jacob A. Hansen Jan 2016

Impact Of Feeding Distillers Grains Or Isolated Components In Distillers Grains On Feedlot Performance And Carcass Traits, Brianna B. Conroy, Matt K. Luebbe, Galen E. Erickson Erickson, Jim C. Macdonald, Jacob A. Hansen

Nebraska Beef Cattle Reports

Six treatments were evaluated to determine the contribution of individual components of distillers grains on finishing performance. Diets were formulated to isolate the contribution of solubles, protein, fat, and fiber compared to a diet containing 40% wet distillers grains or a corn- based control. Th ere was a significant improvement in both feedlot and carcass performance in steers fed the 40% wet distillers grains compared to dry- rolled- corn. Numeric differences between fat, fiber, and protein treatments were observed. However, none of the four component diets alone were able to explain the energy value associated with wet distillers grains.

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Effects Of Feeding Isolated Nutrient Components In Mdgs On Growing Cattle Performance, Brianna B. Conroy, Curtis J. Bittner, Jim C. Macdonald Donald, Matt K. Luebbe, Galen E. Erickson Jan 2016

Effects Of Feeding Isolated Nutrient Components In Mdgs On Growing Cattle Performance, Brianna B. Conroy, Curtis J. Bittner, Jim C. Macdonald Donald, Matt K. Luebbe, Galen E. Erickson

Nebraska Beef Cattle Reports

An experiment was conducted to evaluate the influence of individual nutrient components in distillers grains on performance of growing calves. A 40% corn control treatment was included for direct comparison to a diet containing 40% modified distillers grains. Four additional treatments were formulated to isolate the contribution of solubles, protein, fiber, and a combination of fiber and solubles on cattle performance. Average daily gains and ending BW were greater, while F:G lower for cattle fed 40% modified distillers grains compared to the corn control. We were able to determine that protein, when overfed, contributes to the higher energy value of …

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Utilizing Corn Residue Or Fall Double Cropped Forages For Winter Backgrounding Of Calves, Jordan L. Cox, Kristin E. Hales, Kristen M. Ulmer Ulmer, Richard J. Rasby, Steven D. Shackleford, Chad Engle, John Rieckman, Harvey C. Freetly, Mary E. Drewnoski Jan 2016

Utilizing Corn Residue Or Fall Double Cropped Forages For Winter Backgrounding Of Calves, Jordan L. Cox, Kristin E. Hales, Kristen M. Ulmer Ulmer, Richard J. Rasby, Steven D. Shackleford, Chad Engle, John Rieckman, Harvey C. Freetly, Mary E. Drewnoski

Nebraska Beef Cattle Reports

Th e impact of three backgrounding systems: grazing corn residue with distillers supplementation at 0.86% BW/d, grazing an oats- brassica forage, or feeding a grower ration in a drylot were evaluated. Calves grazing oats- brassica forage had a greater average daily gain (2.25 lb/d) during the 65 d grazing period than calves grazing corn residue (1.77 lb/d). During the entire growing period (end target weight of 800 lbs) which included 21 days of grower ration for the grazing treatments, gains of calves put directly in the drylot and fed a grower ration (3.58 lb/d) were greater than both grazing treatments …

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Economics Of Rebreeding Non- Pregnant Females, Aline G. Da Silva, Jacqueline A. Musgrave, Don C. Adams Adams, John Nollette, Andy Applegarth, Rick N. Funston Jan 2016

Economics Of Rebreeding Non- Pregnant Females, Aline G. Da Silva, Jacqueline A. Musgrave, Don C. Adams Adams, John Nollette, Andy Applegarth, Rick N. Funston

Nebraska Beef Cattle Reports

A budget analysis compared the economics of selling non- pregnant spring- calving cows immediately aft er pregnancy diagnosis or re- breeding non- pregnant cows to be sold as pregnant fall- calving cows in more favorable market prices. Simulation performed for the last 5 yr of market prices demonstrated the strategy is cost effective in different market scenarios, excluding the year 2012/2013. Due to drought, feed prices were the highest and cow prices the lowest of the 5 yr analyzed. Other than atypical scenarios like drought, positive economic results would be possible even at low pregnancy rates, but as the pregnancy …

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Beef Fatty Acid Profiles From Steers Finished With De-Oiled Dry Distillers Grains Plus Solubles Vs. A Corn- Based Diet, Katherine I. Domenech, Keni E.Z. Nubito, Galen E. Erickson Erickson, Chris R. Calkins Jan 2016

Beef Fatty Acid Profiles From Steers Finished With De-Oiled Dry Distillers Grains Plus Solubles Vs. A Corn- Based Diet, Katherine I. Domenech, Keni E.Z. Nubito, Galen E. Erickson Erickson, Chris R. Calkins

Nebraska Beef Cattle Reports

A total of 128 steers were fed one of two finishing diets: 50% de-oiled dry distillers grains plus solubles (DDGS) or a corn- based control diet. Carcasses (n = 48) were selected to evaluate the effect of diet on the fatty acid profile of strip loin steaks. Th e C15:0, C16:1, C17:0, and C17:1 were greater for beef from steers finished on the corn- based control diet while the C18:1T, C18:2, C20:3ω6, total trans, ω6 and polyunsaturated fatty acids (PUFA) were greater in beef from cattle finished on 50% de-oiled DDGS. These findings confirm that feeding distillers grains plus solubles …

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Accurate Amounts And Nutritive Values Of Corn Residues, Shelby E. Gardine, Andrea K. Watson, Jana L. Harding Harding, Terry J. Klopfenstein Jan 2016

Accurate Amounts And Nutritive Values Of Corn Residues, Shelby E. Gardine, Andrea K. Watson, Jana L. Harding Harding, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

It is important to have accurate data on the amounts and nutritive values of residues, especially for grazing situations. Ten plants were harvested for each field replication. Statistical analysis suggests 6 to 10 plants are needed to obtain accurate grain yields and accurate amounts of residue. Further laboratory analysis of the leaves and husks suggests that the energy and protein contents of the residue that is consumed is less than previously reported.

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Effects Of Different Inoculum Used For In Vitro And In Situ Digestion Procedures Performed On Corn Residue Samples, Hannah C. Hamilton, Jana Harding, Jim C. Macdonald Donald, Terry J. Klopfenstein Jan 2016

Effects Of Different Inoculum Used For In Vitro And In Situ Digestion Procedures Performed On Corn Residue Samples, Hannah C. Hamilton, Jana Harding, Jim C. Macdonald Donald, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

An in vitro and in situ study was conducted to assess the effects of donor diet at time of incubation on NDF digestibility of corn residue samples. Residue samples had greater NDF digestibility when animals were on a similar diet (i.e. a high corn residue diet). Digestibility of NDF was greater when time of incubation increased. Th e diet of the donor steer had greater impact as time of incubation increased implying that the animal’s diet, and incubation time, has an impact on the true values of NDF digestibility.

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The Effect Of Delayed Corn Silage Harvest On Corn Silage Yield And Finishing Performance In Yearling Steers, F. Henry Hilscher, Dirk Burken, Curtis J. Bittner Bittner, Jana L. Harding, Terry J. Klopfenstein, Galen E. Erickson Jan 2016

The Effect Of Delayed Corn Silage Harvest On Corn Silage Yield And Finishing Performance In Yearling Steers, F. Henry Hilscher, Dirk Burken, Curtis J. Bittner Bittner, Jana L. Harding, Terry J. Klopfenstein, Galen E. Erickson

Nebraska Beef Cattle Reports

A finishing experiment evaluated the effects of harvesting drier corn silage on performance. Factors were corn silage DM (37 or 43%) and inclusion in the finishing diet (15 or 45%). As corn silage inclusion increased, DMI did not diff er, ADG decreased, and F:G increased. As DM of corn silage was increased, no differences in DMI, ADG, or F:G were observed at either 15 or 45% inclusion. Ensiling drier silage increased tonnage with no negative impact on performance.

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Effects Of Protein Supplementation In Corn Silage Growing Diets Harvested At 37 Or 43% Dm On Cattle Growth, F. Henry Hilscher, Robert G. Bondurant, Jana L. Harding Harding, Terry J. Klopfenstein, Galen E. Erickson Jan 2016

Effects Of Protein Supplementation In Corn Silage Growing Diets Harvested At 37 Or 43% Dm On Cattle Growth, F. Henry Hilscher, Robert G. Bondurant, Jana L. Harding Harding, Terry J. Klopfenstein, Galen E. Erickson

Nebraska Beef Cattle Reports

A growing study evaluated the effects of harvesting drier corn silage and response to rumen undegradable protein (RUP) supplementation. Corn silage was harvested at 37 or 43% DM from the same fields and protein supplement (high in RUP) was provided at 0.0, 2.5, 5.0, 7.5 or 10.0% of diet DM. Ending BW and ADG were decreased, while F:G was increased, when steers were fed 43% DM silage compared to 37% DM silage (88% silage inclusion). Increasing supplemental RUP in the diet increased ending BW, DMI, and ADG linearly, and decreased F:G linearly. Drier silage had less energy for growing steers …

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Annual Forages Following Irrigated Winter Wheat, Karla H. Jenkins, Aaron Berger, Gary Hergert Hergert Jan 2016

Annual Forages Following Irrigated Winter Wheat, Karla H. Jenkins, Aaron Berger, Gary Hergert Hergert

Nebraska Beef Cattle Reports

A sorghum- sudangrass hybrid, oats, and foxtail millet were compared using two planting dates and two irrigation levels in western Nebraska following irrigated winter wheat. In 2012, regardless of planting date and irrigation level, the sorghum- sudangrass hybrid produced more dry matter tons than oats and millet (2.0 vs. 1.3 and 1.2, respectively). In 2013, the sorghum- sudangrass hybrid and oats produced more dry matter tons than millet (1.0 and 1.1 vs. 0.64, respectively). Th e earlier forages could be planted, the more dry matter tons were produced before frost. Across planting dates and water level, crude protein was 11– …

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Evaluating Syngenta Enhanced Feed Corn Processed As Dry- Rolled Or High- Moisture Corn On Cattle Performance And Carcass Characteristics, Melissa L. Jolly- Breithaupt, Curtis J. Bittner, Dirk Burken Burken, Galen E. Erickson, Jim C. Macdonald, Matt K. Luebbe Jan 2016

Evaluating Syngenta Enhanced Feed Corn Processed As Dry- Rolled Or High- Moisture Corn On Cattle Performance And Carcass Characteristics, Melissa L. Jolly- Breithaupt, Curtis J. Bittner, Dirk Burken Burken, Galen E. Erickson, Jim C. Macdonald, Matt K. Luebbe

Nebraska Beef Cattle Reports

A finishing trial was conducted as a 2x2x2 factorial to determine the effect of Syngenta Enhanced Feed Corn™ containing an alpha amylase enzyme trait (SYT- EFC) compared with the parental isoline control corn without the amylase enzyme trait (Negative Isoline) on cattle performance and carcass characteristics. Th e two types of corn grain were processed as either dry- rolled corn (DRC) or high- moisture corn (HMC) and fed with either 18% modifi ed distillers grains plus solubles (MDGS) or 35% Sweet Bran. Cattle fed SYT- EFC DRC with MDGS had a 3.9% improvement in feed conversion compared to Negative Isoline …

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Effect Of Diet On The Rumen Microbial Community Composition Of Finishing Cattle And The Role It Plays In Methane Emissions, Allison L. Knoell, Christopher L. Anderson, Anna C. Pesta Pesta, Galen E. Erickson, Terry J. Klopfenstein Jan 2016

Effect Of Diet On The Rumen Microbial Community Composition Of Finishing Cattle And The Role It Plays In Methane Emissions, Allison L. Knoell, Christopher L. Anderson, Anna C. Pesta Pesta, Galen E. Erickson, Terry J. Klopfenstein

Nebraska Beef Cattle Reports

To understand the relationships between diet, microbial community, and methane production cattle were esophageally tubed when fed a common diet and again during feeding of six treatment diets. Microbial community analysis via 16S tag sequencing, displayed structuring of microbial communities (Bacteria and Archaea) by diet. Th is study demonstrates that the diets tested altered the microbial community from the common diet but had no effect (P > 0.05) between dietary treatments used in the study. While the microbial community changed from the common diet to the treatments was observed, an alteration in microbial community or methane production was not observed due …

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Effect Of Feeding Dried De-Oiled Distillers Grains And Addition Of Postmortem Antioxidants On Ground Beef Shelf Life, Jenae C. Martin, Brandy D. Cleveland, Tommi F. Jones Jones, Jim C. Macdonald, Gary Sullivan Jan 2016

Effect Of Feeding Dried De-Oiled Distillers Grains And Addition Of Postmortem Antioxidants On Ground Beef Shelf Life, Jenae C. Martin, Brandy D. Cleveland, Tommi F. Jones Jones, Jim C. Macdonald, Gary Sullivan

Nebraska Beef Cattle Reports

Ground beef patties from cattle fed either corn based diets with no distillers grains (control) or dried, de-oiled distillers grains (DDDG) during the finishing phase were compared to analyze color stability during retail display. As display time increased, patties with added antioxidant had less discoloration than those without antioxidant. Patties from cattle fed DDDG had the greatest discoloration when no antioxidant was included. Both raw and cooked ground beef from cattle fed DDDG had increased lipid oxidation towards the end of display than beef from corn- finished cattle. Furthermore, corn-finished cattle had lower concentrations of C18:2 in both composite and …

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Impact Of Crude Glycerin Supplementation On Rumen And Duodenal Microbial Populations In Forage Diets, Andrea R. Mccain, Robert G. Bondurant, Melissa Jolly Jolly, Jana L. Harding, Samodha C. Fernando, Jim C. Macdonald Jan 2016

Impact Of Crude Glycerin Supplementation On Rumen And Duodenal Microbial Populations In Forage Diets, Andrea R. Mccain, Robert G. Bondurant, Melissa Jolly Jolly, Jana L. Harding, Samodha C. Fernando, Jim C. Macdonald

Nebraska Beef Cattle Reports

Seven ruminally and duodenally fistulated beef steers were fed 0%, 4%, 8%, and 12% crude glycerin in forage- based diets. Rumen and duodenal samples were used to determine the effects of crude glycerin on the prevalence of five selected species of ruminal bacteria. In the rumen, Anaerovibrio lipolytica and Selenomonas ruminantium increased while Butyrivibrio fibrosolvens, Fibrobacter succinogenes, and Megasphaera elsdenii were unaffected. In the duodenum, A. lipolytica, S. ruminantium, and B. fibrosolvens increased while F. succinogenes and M. elsdenii were unaffected. Changes in the relative abundance of microbial species may help explain animal performance responses to crude glycerin.

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Effect Of Corn Residue Composition On Digestibility By Lambs, Levi J. Mcphillips, Janessa J. Updike, Jim C. Macdonald Donald, Terry J. Klopfenstein, Jana L. Harding, Melissa L. Jolly- Breithaupt Jan 2016

Effect Of Corn Residue Composition On Digestibility By Lambs, Levi J. Mcphillips, Janessa J. Updike, Jim C. Macdonald Donald, Terry J. Klopfenstein, Jana L. Harding, Melissa L. Jolly- Breithaupt

Nebraska Beef Cattle Reports

A lamb digestion trial was conducted to determine the effect of harvest method on total tract digestibility of corn residues. Two residues were harvested using a corn head which gathered 4- rows or 8- rows of stalks with the tailings dropped on the top of the windrow. Corn husks were fed as a control. Diets contained 64.18% corn residue and 35.82% DM of Sweet Bran®, brome grass hay, and sheep mineral. Th ere were no differences in OM, DM, or NDF digestibility between 4- row and 8- row residues. Corn husks had the greatest digestibility.

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Effect Of Mga Vs Cidr Estrus Synchronization On Estrus Response And Pregnancy Rates In 311 D Old Beef Heifers, Hazy R. Nielson, Rosemary V. Anderson, Rick N. Funston Funston Jan 2016

Effect Of Mga Vs Cidr Estrus Synchronization On Estrus Response And Pregnancy Rates In 311 D Old Beef Heifers, Hazy R. Nielson, Rosemary V. Anderson, Rick N. Funston Funston

Nebraska Beef Cattle Reports

A study compared the effect of melengestrol acetate (MGA)-prostaglandin (PG) and 14- day controlled internal drug release (CIDR)- PG estrus synchronization protocols on estrus response and pregnancy rates of 311 d old heifers (n = 153). Pre-breeding BW was 50.1% of predicted mature BW. Percentage of heifers demonstrating signs of estrus was similar between synchronization treatments (CIDR vs MGA, 71.5 vs 77.4 ± 1.0%). Pregnancy rates to AI of heifers expressing estrus (n = 115) and final pregnancy rate were similar between CIDR and MGA synchronization treatments. Approximately half of these 311 d old heifers exposed to AI and bulls …

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Comparison Of Tai At Gnrh Injection And Delayed Insemination Of Non- Estrus Beef Heifers, Hazy R. Nielson, Dan J. Kelly, T. L. Meyer, Rick N. Funston Jan 2016

Comparison Of Tai At Gnrh Injection And Delayed Insemination Of Non- Estrus Beef Heifers, Hazy R. Nielson, Dan J. Kelly, T. L. Meyer, Rick N. Funston

Nebraska Beef Cattle Reports

Heifers were estrus synchronized utilizing the melengestrol acetate (MGA)- prostaglandin (PG) protocol. Heifers expressing estrus aft er synchronization were removed from the herd and AI. Heifers not expressing estrus were administered GnRH and either AI at GnRH injection or AI 19 hours following GnRH injection. Heifers AI from estrus detection had a higher pregnancy rate compared with heifers not expressing estrus. Pregnancy rates to AI did not diff er between heifers AI immediately aft er GnRH compared to heifers AI 19 hours aft er the GnRH injection. Th ere was no benefit to delayed AI of non-estrus beef heifers compared …

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Student Perceptions And Knowledge Of The Feedlot Industry And The Feedyard Management Specialization Internship, Rachel A. Oglesbee, Meredith L. Bremer, Kari L. Lewis Lewis, Dennis R. Brink, Terry J. Klopfenstein, Jim C. Macdonald, Galen E. Erickson Jan 2016

Student Perceptions And Knowledge Of The Feedlot Industry And The Feedyard Management Specialization Internship, Rachel A. Oglesbee, Meredith L. Bremer, Kari L. Lewis Lewis, Dennis R. Brink, Terry J. Klopfenstein, Jim C. Macdonald, Galen E. Erickson

Nebraska Beef Cattle Reports

A survey was developed for seniors in the undergraduate feedlot management class (ASCI 457) at UNL to gauge interest in feedlot management as a profession and familiarity with the Feedyard Management Internship Program. Th e survey found that students feel the internship is beneficial for a future in production agriculture. Th e internship increases confidence of employment and management skills once participation is complete along with gaining experience. Th e number of positions available and the average salary of feedlot managers are underestimated by students. Recruiting efforts appear to be informing students of the program.

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Evaluation Of Distillers Grains Components Singly Or In Combination In A Calf Fed Feedlot Study, Rachel A. Oglesbee, Curtis J. Bittner, F. Henry Hilscher, Galen E. Erickson, Jim C. Macdonald, Matt K. Luebbe Jan 2016

Evaluation Of Distillers Grains Components Singly Or In Combination In A Calf Fed Feedlot Study, Rachel A. Oglesbee, Curtis J. Bittner, F. Henry Hilscher, Galen E. Erickson, Jim C. Macdonald, Matt K. Luebbe

Nebraska Beef Cattle Reports

A finishing study was conducted to determine the value of the fiber, protein, fat, and solubles components from wet distillers grains plus solubles (WDGS) alone or in combination for feedlot cattle in comparison to WDGS diets. The fiber portion alone did not improve F:G. When protein was included in the composite with fiber, F:G improved. With fat and solubles both added separately, F:G continued to improve. None of the components alone could make up the feeding value of WDGS, however the composite diet of fiber, protein, fat, and solubles combined matched the performance observed when WDGS is fed.

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Rumen Protected Amino Acids In Finishing Cattle Diets, Colton Oney, Curtis J. Bittner, F. Henry Hilscher Hilscher, Andrea K. Watson, Terry J. Klopfenstein, Galen E. Erickson, Whitney Rounds Jan 2016

Rumen Protected Amino Acids In Finishing Cattle Diets, Colton Oney, Curtis J. Bittner, F. Henry Hilscher Hilscher, Andrea K. Watson, Terry J. Klopfenstein, Galen E. Erickson, Whitney Rounds

Nebraska Beef Cattle Reports

A 190- d calf fed finishing study, utilizing 240 steers, was conducted to determine the effects of supplementing finishing cattle with bypass amino acids (methionine and lysine) on growth performance. Three treatments (control, methionine, methionine and lysine) were evaluated with 8 pens/trt. All cattle were fed a 40% Sweet Bran, 50% high moisture corn basal diet. Supplementing with bypass amino acids did not affect live cattle performance, and only small differences in 12th rib fat and USDA marbling score were observed. Lack of any dramatic changes in performance suggests these calves were not deficient in methionine or lysine.

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Use Of Dietary Nitrate Or Sulfate For Mitigation Of Methane Production By Finishing Steers, Anna C. Pesta, Robert G. Bondurant, Samodha C. Fernando Fernando, Galen E. Erickson Jan 2016

Use Of Dietary Nitrate Or Sulfate For Mitigation Of Methane Production By Finishing Steers, Anna C. Pesta, Robert G. Bondurant, Samodha C. Fernando Fernando, Galen E. Erickson

Nebraska Beef Cattle Reports

A finishing study was conducted to evaluate the effects of dietary nitrate and sulfate on methane production in finishing cattle. Both nitrate and sulfate addition decreased DMI and ADG. In diets with no sulfate, addition of nitrate had no impact on emissions, but nitrate and sulfate in combination decreased CH4:CO2. However, neither nitrate nor sulfate had any further impact on methane production. Effect of these compounds may be diet dependent and in this study had little impact on CH4 emissions in finishing cattle.

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Methane Production, Diet Digestibility, And Vfa Profile Of Growing Steers Fed High Or Low Quality Forage, A. C. Pesta, M. L. Jolly- Breithaupt, Samodha C. Fernando Fernando, Paul J. Kononoff, Galen E. Erickson Jan 2016

Methane Production, Diet Digestibility, And Vfa Profile Of Growing Steers Fed High Or Low Quality Forage, A. C. Pesta, M. L. Jolly- Breithaupt, Samodha C. Fernando Fernando, Paul J. Kononoff, Galen E. Erickson

Nebraska Beef Cattle Reports

A headbox calorimeter study evaluated the impacts of forage quality on methane production, diet digestibility, and VFA profile of growing steers. Daily production of methane and carbon dioxide were greater for steers fed high- quality compared to low- quality forages. Th ere was no difference in DM or OM digestibility, likely due to dramatic intake differences, and no difference in the amount of methane produced per unit of OM digested. Methane emissions data from this study agree reasonably well with those obtained by alternate methods previously utilized by this group.

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Impact Of A Newly Developed Direct- Fed Microbial On Performance In Finishing Beef Steers, Laura F. Prados, Nirosh D. Aluthge, Robert G. Bondurant Bondurant, Samodha C. Fernando, Galen E. Erickson Jan 2016

Impact Of A Newly Developed Direct- Fed Microbial On Performance In Finishing Beef Steers, Laura F. Prados, Nirosh D. Aluthge, Robert G. Bondurant Bondurant, Samodha C. Fernando, Galen E. Erickson

Nebraska Beef Cattle Reports

An individual feeding experiment (n = 60) was conducted to evaluate the effects of feeding a direct- fed microbial (DFM) or not on performance of finishing steers fed 0 or 40% modified distillers grains (MDGS) in a 2 × 2 factorial design. Gain and F:G were improved when cattle were fed MDGS compared to the corn diet. No significant differences (P ≥ 0.23) were observed between cattle fed DFM or not for DMI and ADG. However, numeric advantages were observed for F:G when cattle were fed a DFM, with a 5% improvement in feed efficiency for steers supplemented with DFM.

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Impact Of Inoculating Corn Silage With Buchnerii 500 On Feedlot Cattle Performance With Or Without Added Yeast Product At Time Of Feeding, Cassandra A. Row, Curtis J. Bittner, Jana L. Harding Harding, James C. Macdonald, Terry J. Klopfenstein, Angel A. Aguilar, Renato J. Schmidt, Galen E. Erickson Jan 2016

Impact Of Inoculating Corn Silage With Buchnerii 500 On Feedlot Cattle Performance With Or Without Added Yeast Product At Time Of Feeding, Cassandra A. Row, Curtis J. Bittner, Jana L. Harding Harding, James C. Macdonald, Terry J. Klopfenstein, Angel A. Aguilar, Renato J. Schmidt, Galen E. Erickson

Nebraska Beef Cattle Reports

Inoculant, Biotal® Buchneri 500, was used to evaluate effects of silage inoculant on feedlot cattle performance and the inclusion of a yeast product, Levucell- SC. Silage was fed at 15 or 40% inclusion so overall treatment structure was a 2 × 2 × 2 factorial arrangement of treatments. Numerous 3- way interactions were observed, but appear due to inconsistent patterns of treatment eff ects. Feeding silage at 40% increased DMI, decreased ADG, and increased F:G compared to feeding 15% silage. Inoculant or feeding Levucell- SC did not improve performance.

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Effect Of Corn Plant Maturity On Yield And Nutrient Quality Of Corn Plants, 2- Year Summary, Cassandra A. Row, Robert G. Bondurant, Andrea K. Watson Watson, Jana Harding, Jim C. Macdonald, Terry J. Klopfenstein, Galen E. Erickson Jan 2016

Effect Of Corn Plant Maturity On Yield And Nutrient Quality Of Corn Plants, 2- Year Summary, Cassandra A. Row, Robert G. Bondurant, Andrea K. Watson Watson, Jana Harding, Jim C. Macdonald, Terry J. Klopfenstein, Galen E. Erickson

Nebraska Beef Cattle Reports

Corn plots were serially harvested over 2 years to evaluate changes in nutrient content, digestibility, and yield as plants matured from half- milk line through black layer. In yr 1 (2013), short (102 d) and normal (111 d) season hybrids were grown. Year 2 used 111 d and 112 d hybrids. Silage and grain yield increased until black layer. Silage DM increased with maturity to 42% at black layer. Percent NDF in the stover, NDF- digestibility and overall silage TDN increased quadratically as maturity increased. Th ere is a balance between moisture content, nutrient content, and silage yield, as corn …

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Cows With Excess Androgen Are Anovulatory And Have Differing Patterns Of Progesterone Secretion, Renata Spuri- Gomes, Sarah C. Tenley, Mohamed A. Abedal- Majed Majed, Scott G. Kurz, Jeff Bergman, Jennifer R. Wood, Andrea S. Cupp Jan 2016

Cows With Excess Androgen Are Anovulatory And Have Differing Patterns Of Progesterone Secretion, Renata Spuri- Gomes, Sarah C. Tenley, Mohamed A. Abedal- Majed Majed, Scott G. Kurz, Jeff Bergman, Jennifer R. Wood, Andrea S. Cupp

Nebraska Beef Cattle Reports

Within the physiology herd, a group of cows that have excess androgen (androstenedione, A4) in the dominant follicle and a 17% reduction in calving rate have being identified. Thus, our objective was to determine follicular dynamics (follicle growth) and progesterone (P4) concentrations in High A4 cows to determine if they were anovulatory. High A4 cows had more persistent dominant follicles and either did not display estrus and ovulated at an inappropriate time or did not ovulate compared with Low A4 cows (Controls). Furthermore, P4 concentrations had reduced peak values and were maintained longer in High vs Low A4 cows which …

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