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Kansas Agricultural Experiment Station Research Reports

2009

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Articles 1 - 30 of 79

Full-Text Articles in Life Sciences

Director's Report Of Research In Kansas 2008, Kansas State University. Agricultural Experiment Station Jan 2009

Director's Report Of Research In Kansas 2008, Kansas State University. Agricultural Experiment Station

Kansas Agricultural Experiment Station Research Reports

The 2008 Director's Report of Research in Kansas provides a list of journal articles, station publications, and other published manuscripts from scientists in our departments, centers, fields, and associated programs. On cover: July 1, 2003 to June 30, 2008


Field Day 2009, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service Jan 2009

Field Day 2009, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service

Kansas Agricultural Experiment Station Research Reports

Each Field Day report consists of individual research reports on topics specific to the region, including cultural methods for most of the major crops grown in Kansas, mitigating the effects of weeds, insects, and disease associated with those crops, and irrigation. Research is conducted and reports written by staff of the K-State Research and Extension Southwest Research Extension Center.


Field Research 2008, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service Jan 2009

Field Research 2008, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service

Kansas Agricultural Experiment Station Research Reports

Includes research reports from these locations: Harvey County Experiment Field, South Central Kansas Experiment Field, Irrigation and North Central Kansas Experiment Fields, Kansas River Valley Experiment Field, East Central Kansas Experiment Field, and Harvey County Experiment Field.


Roundup 2009, Kansas State University. Agricultural Research Southeast Agricultural Research Center Center--Hays Jan 2009

Roundup 2009, Kansas State University. Agricultural Research Southeast Agricultural Research Center Center--Hays

Kansas Agricultural Experiment Station Research Reports

Roundup is the major beef cattle education and outreach event sponsored by the Agricultural Research Center-Hays. The purpose is to communicate timely, applicable research information to producers and extension personnel. The research program of the Agricultural Research Southeast Agricultural Research Center Center-Hays is dedicated to serving the people of Kansas by developing new knowledge and technology to stabilize and sustain long-term production of food and fiber in a manner consistent with conservation of natural resources, protection of the environment, and assurance of food safety. Primary emphasis is on production efficiency through optimization of inputs in order to increase profit margins ...


Length Of The Weaning Period Affects Postweaning Growth, Health, And Carcass Merit Of Ranch-Direct Beef Calves Weaned During The Fall, J.W. Bolte, Todd W. Schmidt, N.A. Sproul, L.A. Pacheco, M.D. Thomas, K. C. Olson, John R. Jaeger, Daniel U. Thomson, Bradley J. White, Robert L. Larson Jan 2009

Length Of The Weaning Period Affects Postweaning Growth, Health, And Carcass Merit Of Ranch-Direct Beef Calves Weaned During The Fall, J.W. Bolte, Todd W. Schmidt, N.A. Sproul, L.A. Pacheco, M.D. Thomas, K. C. Olson, John R. Jaeger, Daniel U. Thomson, Bradley J. White, Robert L. Larson

Kansas Agricultural Experiment Station Research Reports

Bovine respiratory disease (BRD) is the most economically devastating feedlot disease. Risk factors associated with incidence of BRD include (1) stress associated with maternal separation, (2) stress associated with introduction to an unfamiliar environment, (3) poor intake associated with introduction of novel feedstuffs into the animal's diet, (4) exposure to novel pathogens upon transport to a feeding facility and commingling with unfamiliar cattle, (5) inappropriately administered respiratory disease vaccination programs, and (6) poor response to respiratory disease vaccination programs. Management practices that are collectively referred to as preconditioning are thought to minimize damage to the beef carcass from the ...


Length Of The Ranch-Of-Origin Weaning Period Does Not Affect Post-Receiving Growth Or Carcass Merit Of Ranch-Direct, Early-Weaned Beef Calves, J.W. Bolte, K. C. Olson, Todd W. Schmidt, Bradley J. White, George A. Milliken, N.A. Sproul, L.A. Pacheco, M.D. Thomas, John R. Jaeger, Daniel U. Thomson Jan 2009

Length Of The Ranch-Of-Origin Weaning Period Does Not Affect Post-Receiving Growth Or Carcass Merit Of Ranch-Direct, Early-Weaned Beef Calves, J.W. Bolte, K. C. Olson, Todd W. Schmidt, Bradley J. White, George A. Milliken, N.A. Sproul, L.A. Pacheco, M.D. Thomas, John R. Jaeger, Daniel U. Thomson

Kansas Agricultural Experiment Station Research Reports

Bovine respiratory disease (BRD) is the most economically devastating feedlot disease. Risk factors associated with incidence of BRD include (1) stress associated with maternal separation, (2) stress associated with introduction to an unfamiliar environment, (3) low intake associated with introduction of novel feedstuffs into the animal's diet, (4) exposure to novel pathogens upon transport to a feeding facility and commingling with unfamiliar cattle, and (5) inappropriately administered respiratory disease vaccination programs. Management practices that are collectively referred to as preconditioning are thought to minimize damage to the carcass from the BRD complex. Preconditioning management can reduce the aforementioned risk ...


Concurrent Metaphylaxis With Aureomycin And Draxxin In High-Risk Calves Has No Additive Effects On Cattle Health And Performance, J.O. Wallace, Christopher D. Reinhardt, Daniel U. Thomson Jan 2009

Concurrent Metaphylaxis With Aureomycin And Draxxin In High-Risk Calves Has No Additive Effects On Cattle Health And Performance, J.O. Wallace, Christopher D. Reinhardt, Daniel U. Thomson

Kansas Agricultural Experiment Station Research Reports

The shipping and receiving period is one of the most stressful experiences during a calf's lifetime. Stressors include weaning, commingling, transportation, processing, feed and water changes, and disease challenge placed on the animal upon entering a stocker operation or feedlot. These stressors result in decreased appetite, loss of body mass, decreased immunity, and increased risk of disease. Bovine respiratory disease complex has one of the highest treatment costs of all diseases affecting feedlot cattle and can negatively affect feedlot performance and carcass characteristics of animals, resulting in decreased profit. Mass medication (metaphylaxis) is the treatment of all cattle at ...


Combinations Of Steam-Flaked Corn, Dry-Rolled Corn, And Dried Distillers Grains Yield Beef With Similar Yet Subtle Changes In Sensory Traits, P.L. Black, G.L. Parsons, M.K. Shelor, K.K. Karges, M.L. Gibson, Michael E. Dikeman, James S. Drouillard Jan 2009

Combinations Of Steam-Flaked Corn, Dry-Rolled Corn, And Dried Distillers Grains Yield Beef With Similar Yet Subtle Changes In Sensory Traits, P.L. Black, G.L. Parsons, M.K. Shelor, K.K. Karges, M.L. Gibson, Michael E. Dikeman, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Rapid expansion of fuel ethanol production has made available abundant supplies of distillers grains with solubles, which are well-suited as a substitute for cereal grains in finishing cattle diets. Several recently reported experiments have revealed that feeding distillers grains may have adverse effects on carcass value as a result of the tendency to produce carcasses with lower quality grades and/or higher yield grades. The effects on quality grade have been most evident in flaked-grain diets, but effects on yield grade are more or less independent of the type of grain fed. In Kansas, two common methods for processing grains ...


Feed Depredation By European Starlings, G.L. Parsons, M.K. Shelor, Brandon E. Depenbusch, James S. Drouillard, Charles D. Lee Jan 2009

Feed Depredation By European Starlings, G.L. Parsons, M.K. Shelor, Brandon E. Depenbusch, James S. Drouillard, Charles D. Lee

Kansas Agricultural Experiment Station Research Reports

European starlings (Sturnus vulgaris) were first introduced to the United States in the late 1800s. It is believed that the starlings were imported from Europe and released in New York City's Central Park so that all of the birds mentioned in Shakespeare's works would inhabit the new country. For the next 50 years, the starling population grew exponentially; by 1942, starlings had spread to the West Coast. Starlings are not considered migratory and remain in the same general area year round; however, some may migrate several hundred miles. During much of the year, the inconspicuous starlings disperse into ...


The Combination Of Implanting With Revalor-200 And Feeding Zilmax Increases Subprimal Meat Yield Of Fed Cows, S. Neill, T.T. Marston, M.J. Daniel, James J. Higgins, John A. Unruh, John R. Jaeger Jan 2009

The Combination Of Implanting With Revalor-200 And Feeding Zilmax Increases Subprimal Meat Yield Of Fed Cows, S. Neill, T.T. Marston, M.J. Daniel, James J. Higgins, John A. Unruh, John R. Jaeger

Kansas Agricultural Experiment Station Research Reports

Mature cows are culled from herds for reasons such as poor performance and failure to rebreed. When these cows are removed from the herd, they are typically in thin condition and potentially can be fed to gain weight and increase income. Previous research has shown that feeding cull cows high-energy diets can increase carcass weight, fatness, and meat yield. Management practices of implanting and feeding β-adrenergic agonists, repartitioning agents that favor protein deposition at the expense of fat deposition, have been shown to further improve performance and carcass yields. As reported elsewhere in this publication, carcasses from concentrate-fed cows implanted ...


The Combination Of Implanting With Revalor-200 And Feeding Zilmax Increases Ribeye Area Of Fed Cows, S. Neill, T.T. Marston, James J. Higgins, John A. Unruh, John R. Jaeger Jan 2009

The Combination Of Implanting With Revalor-200 And Feeding Zilmax Increases Ribeye Area Of Fed Cows, S. Neill, T.T. Marston, James J. Higgins, John A. Unruh, John R. Jaeger

Kansas Agricultural Experiment Station Research Reports

Mature cows are typically removed from the cow herd for various reasons, such as reproductive inefficiency and poor performance. It has been estimated that as much as 15 to 25% of a ranch's revenue may be from cull cows. When cows are culled from the herd, they are normally in thin condition and potentially can be fed to gain weight and increase income. Previous studies indicate that feeding a high-energy diet and implanting cull cows can improve performance and increase meat yield. Zilmax (zilpaterol hydrochloride; Intervet Inc., Millsboro, DE) is a β-adrenergic agonist approved as a growth promotant in ...


Using Sequential Feeding Of Optaflexx And Zilmax To Improve Performance And Meat Quality In Cull Beef Cows, M.J. Daniel, Michael E. Dikeman, Terry A. Houser, John A. Unruh, John R. Jaeger, Leigh W. Murray Jan 2009

Using Sequential Feeding Of Optaflexx And Zilmax To Improve Performance And Meat Quality In Cull Beef Cows, M.J. Daniel, Michael E. Dikeman, Terry A. Houser, John A. Unruh, John R. Jaeger, Leigh W. Murray

Kansas Agricultural Experiment Station Research Reports

Beef cows are culled from herds because of reproductive inefficiency, poor performance, old age, or farm downsizing due to high production costs. The National Market Cow and Bull Beef Quality Audit of 1999 reported that challenges associated with cull cow carcasses are undesirable dressing percentages and meat yields. Since 1999, an increasing number of producers are either selling cows in better physical condition or feeding cows a high concentrate ration for 50 to 100 days prior to harvest. According to the 2007 audit, cow carcasses were heavier and leaner and had more desirable muscle and fat color scores than in ...


Near-Infrared Tissue Oximetry Of Beef Longissimus Muscle For The Improvement Of Meat Color And Meat Color Stability, A. Mohan, Terry A. Houser, T.E. Barstow, Melvin C. Hunt Jan 2009

Near-Infrared Tissue Oximetry Of Beef Longissimus Muscle For The Improvement Of Meat Color And Meat Color Stability, A. Mohan, Terry A. Houser, T.E. Barstow, Melvin C. Hunt

Kansas Agricultural Experiment Station Research Reports

Meat color as perceived by consumers serves as a valuable guide for assessing overall quality and wholesomeness of meat. The bright cherry-red color of beef is influenced by tissue oxygen consumption, obstacles to oxygen diffusion, and thickness of the oxymyoglobin layer. The dynamics of meat color depend on several physical properties of muscle including myoglobin redox status and concentration. Physical, chemical, and anatomical differences in muscles cause large variations in color from cut to cut, within a cut, and in cuts made parallel or perpendicular to muscle fibers. Clearly, muscle fiber orientation affects measurements of tenderness and cooking yields; however ...


Spotlight On Dry Aging Beef: Effects Of Loin Type, Aging Methods, And Aging Time, S.L. Degeer, C.L. Bratcher, B.A. Crozier-Dodson, D.E. Johnson, J.F. Stika, Melvin C. Hunt Jan 2009

Spotlight On Dry Aging Beef: Effects Of Loin Type, Aging Methods, And Aging Time, S.L. Degeer, C.L. Bratcher, B.A. Crozier-Dodson, D.E. Johnson, J.F. Stika, Melvin C. Hunt

Kansas Agricultural Experiment Station Research Reports

Dry aging is an old-time process used to produce a high quality beef product marketed to high-end customers. Its most unique quality is the distinctive dry-aged flavor. Dry aging has been accomplished through many protocols over the years, but an optimum protocol has not been adopted. Practitioners of this art are very interested in providing a consistent, quality, safe product. Traditionally, dry aging is done without packaging, which places more emphasis on plant quality control practices to achieve a consistent product. This limits the number of processors that have the ability to produce dry-aged product. Packaging bags with a very ...


Thermal Process With Additional Drying Provides Proper Lethality For Controlling Pathogens During Jerky Production, Kelly J.K. Getty, N.M. Harper, Elizabeth A.E. Boyle Jan 2009

Thermal Process With Additional Drying Provides Proper Lethality For Controlling Pathogens During Jerky Production, Kelly J.K. Getty, N.M. Harper, Elizabeth A.E. Boyle

Kansas Agricultural Experiment Station Research Reports

The New Mexico Department of Health linked salmonellosis to beef jerky in 2003 after 26 individuals became ill; this prompted a recall of nearly 21,600 lb of product. Following this incident, the USDA's Food Safety and Inspection Service instituted the Compliance Guideline for Meat and Poultry Jerky Produced by Small and Very Small Plants in 2004 and updated this document in 2007 with the Quick Guide on Jerky Processing. The Quick Guide states that water activity for jerky products should be ≤ 0.85 for safety and a moisture-to-protein ratio (MPR) must be ≤ 0.75:1 for product to ...


Incidence And Severity Of Arcanobacterium Pyogenes Injection Site Abscesses With Needle Or Needle-Free Injection Methods, B M. Gerlach, Terry A. Houser, Larry C. Hollis, Michael D. Tokach, Jerome C. Nietfeld, James J. Higgins, Gary A. Anderson, B L. Goehring Jan 2009

Incidence And Severity Of Arcanobacterium Pyogenes Injection Site Abscesses With Needle Or Needle-Free Injection Methods, B M. Gerlach, Terry A. Houser, Larry C. Hollis, Michael D. Tokach, Jerome C. Nietfeld, James J. Higgins, Gary A. Anderson, B L. Goehring

Kansas Agricultural Experiment Station Research Reports

A total of 198 nursery age pigs were used to evaluate the difference in the occurrence of injection site abscesses between needle-free jet injection and conventional needle-and-syringe injection systems. Pigs were fed for 21 d prior to treatment administration to acclimate the pigs to the environment of the Kansas State University Segregated Early Weaning Unit. On d 21, each pig received 4 injections of aluminum hydroxide adjuvant, 1 in the neck and 1 in the ham by needle-free jet injection (Pulse Needle-Free Systems, Lenexa, KS) on 1 side and 1 in the neck and 1 in the ham on the ...


Effects Of Increasing Feeding Level During Late Gestation On Sow And Litter Performance, N W. Shelton, C R. Neill, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2009

Effects Of Increasing Feeding Level During Late Gestation On Sow And Litter Performance, N W. Shelton, C R. Neill, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 108 gilts and sows (PIC 1050) and their litters were used over 2 gestation and lactation periods to determine the effect of increasing late gestation feeding level on sow and litter performance. Treatments were structured as a 2 × 2 factorial design with main effects of feeding level (0 or 2 lb of extra feed from d 90 to farrowing) and parity group (gilts or sows). The trial was conducted for 2 successive parities, with gilts and sows remaining on the same treatment for both parities. For the first gestation and lactation period, gilts had increased (P < 0.001) backfat thickness on d 35, 90, and 112 of gestation and at farrowing compared with sows but had increased (P < 0.001) lactation backfat loss. Increasing late gestation feed increased (P < 0.001) weight gain from d 90 to 112 in both gilts and sows. There were late gestation feeding level × parity interactions observed (P < 0.04) for ADFI and total feed intake for the overall lactation period. This was due to gilts having decreased lactation ADFI when fed extra feed in late gestation, but when sows were fed extra feed, lactation ADFI increased. Increasing feeding level in late gestation also increased (P < 0.04) total feed cost. A feeding level × parity interaction was observed (P < 0.04) for average weight of total born and live born pigs. Increasing feeding level in late gestation increased piglet birth weight in gilts but decreased piglet weight in sows. Gilts had increased (P < 0.02) number and total weight of the total born, live born, and number after fostering compared with older parity sows. Gilts weaned larger (P < 0.002) litters and had increased (P < 0.03) total litter weaning weight compared with older parity sows. At weaning, sows had a decreased (P < 0.002) weaning to breeding interval compared with gilts, and a late gestation feeding level × parity interaction was observed (P < 0.03) for conception rate. Gilts that received increased late gestation feed had a greater conception rate than those maintained on the same level, whereas a decrease in conception rate was observed when sows received increased late gestation feed. During the subsequent lactation period, a feeding level × parity interaction was detected (P < 0.005) for lactation backfat loss. This interaction was reflective of an increase in backfat loss in parity 2 sows as the late gestation feeding level was increased and a decrease in backfat loss in parity 3 and older sows with increasing late gestation feeding level. A feeding level × parity interaction was detected (P < 0.02) for lactation weight loss; parity 2 sows lost a greater amount of weight when late gestation feeding level was increased, whereas similar weight losses were observed between treatments in parity 3 and older sows. Total born and live born numbers and total litter weight were greater (P < 0.006) in parity 2 sows than in parity 3 and older sows. A late gestation feeding level × parity interaction was observed (P < 0.01) for average weight of both total born and live born pigs because of an increase in piglet birth weight as parity 2 sows were supplemented with 2 lb of additional feed in late gestation with a slight numeric decrease in parity 3 and older sows. Additional feed in late gestation increased (P < 0.02) average piglet weaning weight, with a large improvement observed in parity 2 sows. Total number weaned and total weight at weaning were increased (P < 0.004) in parity 2 sows compared with parity 3 and older sows. This trial indicates that adding extra feed to late gestation diets increased feed cost with no benefit in sow performance. In gilts, conception rate and litter weaning weight were increased during the second parity, but no other benefits were found.; Swine Day, Manhattan, KS, November 19, 2009


Effects Of Feeder Design, Gender, And Dietary Concentration Of Dried Distillers Grains With Solubles On The Growth Performance And Carcass Characteristics Of Growing-Finishing Pigs, J R. Bergstrom, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Steven S. Dritz Jan 2009

Effects Of Feeder Design, Gender, And Dietary Concentration Of Dried Distillers Grains With Solubles On The Growth Performance And Carcass Characteristics Of Growing-Finishing Pigs, J R. Bergstrom, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A 2 × 2 × 2 factorial experiment was conducted to evaluate the interactive effects of feeder design (conventional dry vs. wet-dry feeder), gender (barrow vs. gilt), and dietary concentration of dried distillers grains with solubles (DDGS; 20% vs. 60%) on finishing pig performance. A total of 1,080 pigs (PIC 337 × 1050) were used in the 99-d experiment. Pigs were sorted by gender (barrows and gilts) into groups of 27, weighed (77.4 lb initial BW), allotted to pens containing 1 of the 2 feeder types, and assigned to a corn-soybean meal-DDGS-based feeding program of either 20% or ...


Effects Of Copper Sulfate And Zinc Oxide On Weanling Pig Growth And Plasma Mineral Levels, N W. Shelton, Michael D. Tokach, Joel M. Derouchey, G M. Hill, R G. Amachawadi, Tiruvoor G. Nagaraja, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz Jan 2009

Effects Of Copper Sulfate And Zinc Oxide On Weanling Pig Growth And Plasma Mineral Levels, N W. Shelton, Michael D. Tokach, Joel M. Derouchey, G M. Hill, R G. Amachawadi, Tiruvoor G. Nagaraja, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 216 weanling pigs (PIC TR4 × 1050, initially 13.6 lb and 21 d of age) were used in a 42-d growth trial to compare the effects of supplemental zinc and copper and changing mineral regimens on growth performance and plasma mineral levels. The 6 dietary treatments included a 2 × 2 factorial arrangement with main effects of added copper from copper sulfate (0 or 125 ppm) and added zinc from zinc oxide (0 or 3,000 ppm from d 0 to 14 and 0 or 2,000 ppm from d 14 to 42). For the final ...


Effects Of Sirrah-Bios Prrsv-Rs Vaccine On Mortality Rate And Finisher Pig Performance, M L. Potter, Steven C. Henry, Lisa M. Tokach, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2009

Effects Of Sirrah-Bios Prrsv-Rs Vaccine On Mortality Rate And Finisher Pig Performance, M L. Potter, Steven C. Henry, Lisa M. Tokach, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,561 pigs (initially 4 d of age) were used to determine the effects of a porcine reproductive and respiratory syndrome virus (PRRSv) subunit vaccine, PRRSV-RS (Sirrah-Bios, Ames, IA), on mortality rate and finisher pig growth performance in a PRRSv-positive commercial herd. Pigs were randomly assigned by litter to either the subunit PRRSv vaccine or non-vaccinated control group. Pigs in the vaccinated group received an intramuscular injection of 1 mL PRRSV-RS vaccine at processing (approximately 4 d after birth) and again at weaning (approximately 24 d of age). Vaccinated and control pigs were comingled in a single ...


Effects Of Porcine Circovirus Type 2 Vaccination On Nursery And Finishing Pig Performance Under A Prrs Challenge, N W. Shelton, J L. Usry, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2009

Effects Of Porcine Circovirus Type 2 Vaccination On Nursery And Finishing Pig Performance Under A Prrs Challenge, N W. Shelton, J L. Usry, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 2,571 barrows and gilts (PIC 337 × 1050) were used to determine the effects of porcine circovirus type 2 vaccine (PCV2) on nursery and finishing pigs that were challenged with porcine respiratory and reproductive syndrome (PRRS). Treatments were arranged in a 2 × 2 factorial design with main effects of gender (barrow or gilt) and vaccine (PCV2 vaccinates or non-vaccinates). Vaccinated pens received 2 doses of commercial PCV2 vaccine (Circumvent PCV, Intervet Inc., Millsboro, DE) according to label directions on d 1 and 22 in the nursery. All pigs were also inoculated on d 30 with ...


Effects Of Meal Or Pellet Diet Form On Finishing Pig Performance And Carcass Characteristics, M L. Potter, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2009

Effects Of Meal Or Pellet Diet Form On Finishing Pig Performance And Carcass Characteristics, M L. Potter, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two experiments were performed to determine the effects of feeding diets in meal or pellet form on finishing pig performance. A corn-soybean meal-based diet was fed in Exp. 1, and a diet containing alternative ingredients was used in Exp. 2. All pelleted diets were processed through a CPM pellet mill (California Pellet Mill Co., Crawfordsville,IN) equipped with a 3/16 in. die. In Exp. 1, a total of 1,072 pigs (60.7 lb) were used in a 112-d trial. Treatments were arranged in 2 × 2 factorial design (10 pens per treatment) with main effects of diet form ...


Effect Of Dried Distillers Grains With Solubles Withdrawal Regimens On Finishing Pig Performance And Carcass Characteristics, J Y. Jacela, J M. Benz, K J. Prusa, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2009

Effect Of Dried Distillers Grains With Solubles Withdrawal Regimens On Finishing Pig Performance And Carcass Characteristics, J Y. Jacela, J M. Benz, K J. Prusa, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 962 pigs (PIC L337 × 1050, initial BW = 86.1 lb) were used to determine the effect of dried distillers grains with solubles (DDGS) withdrawal regimens on growth performance and carcass traits. Pigs were randomly assigned to 1 of 6 treatments (6 pens per treatment) balanced by average BW within gender. Treatments were: (1) a corn-soybean meal-based diet without DDGS fed for 89 d (control), (2) 30% DDGS fed from d 0 to 48 and 0% DDGS fed from d 48 to 89, (3) 30% DDGS fed from d 0 to 69 and 0% DDGS fed from ...


Effects Of Copper Sulfate, Zinc Oxide, And Neoterramycin On Weanling Pig Growth And Antibiotic Resistance Rate For Fecal Escherichia Coli, N W. Shelton, M E. Jacob, Michael D. Tokach, Joel M. Derouchey, R G. Amachawadi, X Shi, Tiruvoor G. Nagaraja, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz Jan 2009

Effects Of Copper Sulfate, Zinc Oxide, And Neoterramycin On Weanling Pig Growth And Antibiotic Resistance Rate For Fecal Escherichia Coli, N W. Shelton, M E. Jacob, Michael D. Tokach, Joel M. Derouchey, R G. Amachawadi, X Shi, Tiruvoor G. Nagaraja, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 180 weanling pigs (PIC TR4 ×1050, initially 11.1 lb and 21 d of age) were used in a 42-d growth trial to compare the effects of supplemental zinc, copper, and in-feed antimicrobial on weanling pig growth and antibiotic resistance of fecal Escherichia coli. There were 5 dietary treatments with 6 pens per treatment and 5 pigs per pen. Pens were assigned to dietary treatments in a randomized complete block design. Treatments were arranged in a 2 × 2 factorial design with main effects of copper sulfate (0 or 125 ppm) and zinc oxide (0 or ...


Evaluation Of Pep2 In Nursery Pig Diets, A J. Myers, N W. Shelton, G Papadopoulos, D Mckilligan, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz Jan 2009

Evaluation Of Pep2 In Nursery Pig Diets, A J. Myers, N W. Shelton, G Papadopoulos, D Mckilligan, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 300 nursery pigs (PIC 327 × 1050, initially 12.0 lb and 21 d of age) were used in a 25-d study to determine the effects of PEP2 (proteins enzymatically processed) on growth performance of weaned pigs. PEP2 is a combination of refined porcine intestinal mucosa co-dried with enzymatically processed vegetable protein. There were 5 dietary treatments: (1) negative control containing no specialty protein sources, (2) positive control containing 4% spray-dried animal plasma (SDAP) in Phase 1 and 4% select menhaden fish meal in Phase 2, (3) 4% PEP2, (4) 8% PEP2, and (5) 12% PEP2. All ...


Efficacy Of Different Commercial Phytase Sources And Development Of A Phosphorus Release Curve, C K. Jones, B W. Ratliff, N L. Horn, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz Jan 2009

Efficacy Of Different Commercial Phytase Sources And Development Of A Phosphorus Release Curve, C K. Jones, B W. Ratliff, N L. Horn, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two experiments used 184 pigs (PIC, 22.7 and 21.3 lb BW, respectively) to develop an available P (aP) release curve for commercial phytase products. In Exp. 1 and 2, pigs were fed a basal diet (0.06% aP) and 2 levels of added aP from inorganic P (monocalcium P) to develop a standard curve. In Exp. 1, 100, 175, 250, or 500 phytase units (FTU)/kg OptiPhos (Enzyvia LLC, Sheridan, IN) or 200, 350, 500 or 1,000 FTU/kg Phyzyme XP (Danisco Animal Nutrition, Marlborough, UK) was added to the basal diet. In Exp. 2, 250, 500 ...


Effects Of Porcine Circovirus Type 2 And Mycoplasma Hyopneumoniae Vaccines On Nursery Pig Performance, M L. Potter, A W. Duttlinger, J R. Bergstrom, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2009

Effects Of Porcine Circovirus Type 2 And Mycoplasma Hyopneumoniae Vaccines On Nursery Pig Performance, M L. Potter, A W. Duttlinger, J R. Bergstrom, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 360 weanling barrows (PIC 1050, 21 d of age and 13.0 lb) were used in a 35-d study to evaluate the effects of porcine circovirus type 2 (PCV2) and Mycoplasma hyopneumoniae (M. hyo) vaccines on nursery pig growth performance. Two commercial PCV2 vaccines were evaluated in this study: (1) a 2-dose product, Circumvent PCV (Circumvent; Intervet/Schering-Plough Animal Health, Millsboro, DE) and (2) a 1-dose product, Ingelvac CircoFLEX (CircoFLEX; Boehringer Ingelheim Vetmedica, Inc, St. Joseph, MO). For the M. hyo vaccine, RespiSure (Pfizer Animal Health, New York, NY), a single 2-dose product, was used. At weaning ...


Effects Of Increasing Hominy Feed In Diets On Finishing Pig Performance, M L. Potter, J Y. Jacela, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2009

Effects Of Increasing Hominy Feed In Diets On Finishing Pig Performance, M L. Potter, J Y. Jacela, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,035 finishing pigs (initially 79.4 lb) were used in an 84-d growth trial to evaluate the effects of increasing hominy feed on finishing pig growth performance. Pens of pigs were blocked by average initial pig BW and randomly allotted to 1 of 4 dietary treatments (10 pens per treatment) with initial weights balanced across the treatment groups. Treatments were increasing levels (0%, 12.5%, 25%, and 37.5%) of corn hominy feed added to a corn-soybean meal-based diet. All treatment diets were fed in 4 phases, and hominy feed inclusion was constant among phases. Increasing ...


Effects Of Adding Enzymes To Diets Containing High Levels Of Dried Distillers Grains With Solubles On Growth Performance Of Finishing Pigs, J Y. Jacela, K J. Prusa, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2009

Effects Of Adding Enzymes To Diets Containing High Levels Of Dried Distillers Grains With Solubles On Growth Performance Of Finishing Pigs, J Y. Jacela, K J. Prusa, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,032 pigs (BW = 101.5 lb) were used in a 90-d experiment to determine the effects of adding enzymes to diets containing high levels of dried distillers grains with solubles (DDGS) on growth performance and carcass characteristics of finishing pigs. Pigs were blocked by BW and randomly allotted to 1 of 7 dietary treatments with 6 pens per treatment. The control diet contained 30% DDGS. The remaining treatments were arranged in a 2 × 3 factorial design based on DDGS (45 or 60%) and enzyme inclusion (none, product A, or product B). Enzyme products were commercially ...


Effect Of Constant Or Step-Up Ractopamine Hcl (Paylean) Feeding Programs On Growth Performance And Carcass Characteristics Of Late-Finishing Pigs, J Y. Jacela, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2009

Effect Of Constant Or Step-Up Ractopamine Hcl (Paylean) Feeding Programs On Growth Performance And Carcass Characteristics Of Late-Finishing Pigs, J Y. Jacela, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,099 pigs (PIC 337 × C22; initial BW = 208 lb) were used to evaluate the effect of ractopamine HCl (RAC) feeding programs on growth and carcass traits of late-finishing pigs. Pigs were randomly assigned to 1 of 3 treatments balanced by average BW within gender. There were 14 pens per treatment and 26 pigs per pen. Treatments were a basal diet with: (1) 0 g/ton RAC for 28 d (control), (2) 0 g/ton RAC from d 0 to 7 and 4.5 g/ton RAC from d 7 to 28 (constant), and (3) 4 ...