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Kansas Agricultural Experiment Station Research Reports

2004

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Articles 31 - 60 of 80

Full-Text Articles in Life Sciences

Evaluation Of Expresstm 5-Phm And Titanium® 5-Phm Bac®-1 On High-Risk Receiving Steers, M.P. Epp, Larry C. Hollis, B.B. Barnhardt, Dale A. Blasi Jan 2004

Evaluation Of Expresstm 5-Phm And Titanium® 5-Phm Bac®-1 On High-Risk Receiving Steers, M.P. Epp, Larry C. Hollis, B.B. Barnhardt, Dale A. Blasi

Kansas Agricultural Experiment Station Research Reports

One backgrounding field study was conducted at two locations to compare the health and performance of high-risk receiving steers given an ExpressTM 5-Pasteurella Haemolytica- Multocida (PHM) vaccine or a Titanium® 5-PHM Bac®-1 vaccine. At one location, calves given the Titanium 5-PHM vaccination had fewer first and second repulls (P<0.05). At the other location, calves given the Express 5-PHM vaccination had fewer initial pulls for respiratory disease and more hospital pen days at initial pull (P<0.05) than those given Titanium 5-PHM. No differences were measured at either location for mortality and average daily gain.

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Effect Of Corn Endosperm Type And Corn Containing The Cry1f Protein On Performance Of Beef Heifers Fed Finishing Diets Based On Steam-Flaked Corn, J.J. Sindt, E.R. Loe, T.J. Kessen, M.J. Sulpizio, Sean P. Montgomery, F.N. Owens, James S. Drouillard Jan 2004

Effect Of Corn Endosperm Type And Corn Containing The Cry1f Protein On Performance Of Beef Heifers Fed Finishing Diets Based On Steam-Flaked Corn, J.J. Sindt, E.R. Loe, T.J. Kessen, M.J. Sulpizio, Sean P. Montgomery, F.N. Owens, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Eighty beef heifers (initial body weight = 795 ± 18 lb) were individually fed finishing diets based on steam-flaked corn for 118 days. Dietary treatments consisted of corn hybrids containing vitreous (HARD), opaque (SOFT), or intermediate (INT) types of corn endosperm. Within the HARD endosperm type, a transgenic hybrid (HARD-GMO) containing the Herculex I Cry1F protein was compared with its nontransgenic, conventional (HARDCONV) counterpart. Dry matter intake, average daily gain, and gain efficiencies were similar among treatments. Likewise, hot carcass weight, dressing percentage, and ribeye area were unaffected by dietary treatment. Heifers fed HARD-CONV were fatter than heifers fed HARD-GMO, …

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Growth Performance And Carcass Characteristics Of Finishing Beef Steers Implanted With Component Te-S Or Component Te-S With Tylan, B. Dicke, G.E. Erickson, T.J. Klopfenstein, R.T. Botts, P.T. Anderson, Brandon E. Depenbusch, James S. Drouillard Jan 2004

Growth Performance And Carcass Characteristics Of Finishing Beef Steers Implanted With Component Te-S Or Component Te-S With Tylan, B. Dicke, G.E. Erickson, T.J. Klopfenstein, R.T. Botts, P.T. Anderson, Brandon E. Depenbusch, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Component TE-S and Component TE-S with Tylan growth-promoting implants were compared in an experiment conducted at a commercial feedlot operation (Ward Feed Yard; Larned, Kansas) to evaluate effects on growth performance and carcass characteristics. Crossbred steers (n=1843; 827 lb body weight) were implanted with either Component TE-S or Component TE-S with Tylan and were fed a finishing ration based on steam-flaked corn for an average of 116 days before slaughter. Cattle were assigned randomly to the implant treatments at processing and were allotted to 12 pens, containing an average of 154 steers each. No differences were detected in dry matter …

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Influence Of Fall Protein Supplementation With A Self-Fed Liquid Supplement On Performance Of Beef Cows Grazing Tallgrass Prairie Range, Donald A. Llewellyn, B.T. Gray, T.T. Marston, C.A. Bandyk Jan 2004

Influence Of Fall Protein Supplementation With A Self-Fed Liquid Supplement On Performance Of Beef Cows Grazing Tallgrass Prairie Range, Donald A. Llewellyn, B.T. Gray, T.T. Marston, C.A. Bandyk

Kansas Agricultural Experiment Station Research Reports

We evaluated the effect of providing a liquid, high-protein supplement during the fall grazing period on beef cow and calf performance. Mature, pregnant, spring-calving cows (n=122) grazing native range were assigned to supplementation treatments. All calves were weaned on October 15. Control cows received no fall supplementation and then were handfed a dry supplement (40% crude protein; as fed basis) from December 17 until calving. Supplemented cows were either allowed access to a liquid protein supplement (40% crude protein; as-fed basis) approximately 2 months before weaning until calving (fall supplementation from August 14 to December 17) or from weaning until …

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Effects Of Lactobacillus Acidophilus And Propionibacterium Freudenreichii On Growth Performance And Carcass Characteristics Of Finishing Beef Cattle, M.A. Greenquist, B. Dicke, G.E. Erickson, T.J. Klopfenstein, James S. Drouillard Jan 2004

Effects Of Lactobacillus Acidophilus And Propionibacterium Freudenreichii On Growth Performance And Carcass Characteristics Of Finishing Beef Cattle, M.A. Greenquist, B. Dicke, G.E. Erickson, T.J. Klopfenstein, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

There have been contradicting reports of the efficacy of direct-fed microbials in finishing cattle diets. Some researchers have observed improvements in daily gain and feed efficiency when direct-fed microbials are included in finishing diets, whereas others have reported no differences in dry matter intake or ruminal and blood pH. Many of these studies have been conducted on a relatively small scale and used few animals per pen compared with that of typical commercial feedlot operations. In our study, yearling crossbred beef steers and heifers (n=3,539; 796 lb body weight) were used in an experiment conducted at a commercial feedlot operation …

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Endpoint Temperature, Cooking Method, And Marbling Degree Have Different Effects On Warner-Bratzler Shear Force Of Beef Strip Loin, Bottom Round, And Brisket Muscles, E. Obuz, J.W. Stephens, J.P. Grobbel, T.M. Loughin, Michael E. Dikeman Jan 2004

Endpoint Temperature, Cooking Method, And Marbling Degree Have Different Effects On Warner-Bratzler Shear Force Of Beef Strip Loin, Bottom Round, And Brisket Muscles, E. Obuz, J.W. Stephens, J.P. Grobbel, T.M. Loughin, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Our objective was to determine the effects of endpoint temperature, cooking method, and marbling on Warner-Bratzler shear force (WBSF; an objective method for determining tenderness) of three beef muscles. Eighteen subprimals of a muscle containing low content of connective tissue, longissimus lumborum (strip loin), and two muscles containing a high content of connective tissue, biceps femoris (bottom round) and deep pectoralis (brisket), were selected from USDA Select and Choice (Certified Angus Beef) carcasses. After 14 days of aging, subprimals were frozen, fabricated into steaks, and stored frozen until cooking. Steaks were assigned to one of two cooking methods, the Magikitch'n® …

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Relationship Of Warner-Bratzler Shear Force And Trained Sensory Panel Tenderness Of Strip Loin Steaks Cooked To 131 And 158°F, J.W. Stephens, E. Obuz, J.P. Grobbel, Michael E. Dikeman Jan 2004

Relationship Of Warner-Bratzler Shear Force And Trained Sensory Panel Tenderness Of Strip Loin Steaks Cooked To 131 And 158°F, J.W. Stephens, E. Obuz, J.P. Grobbel, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

In a previous study, eighteen strip loins from USDA Select and premium Choice carcasses were cooked on a Magikitch'n® belt grill to determine tenderness at nine different endpoint temperatures. That study revealed that optimum Warner-Bratzler shear force (WBSF) values occurred in strip loin steaks cooked to 131°F, but current WBSF protocol requires steaks to be cooked to 158°F. Therefore, trials employing trained sensory panels (TSP) were conducted to determine the relationship of WBSF with TSP tenderness from steaks cooked to 131 and 158°F on the belt grill. As expected, panelists found steaks cooked to 131°F more tender than those cooked …

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Changes In Breeding Soundness Evaluation During A Breeding Season, A.W. Thompson, T.T. Marston, M. Sanderson, P. Chenoweth Jan 2004

Changes In Breeding Soundness Evaluation During A Breeding Season, A.W. Thompson, T.T. Marston, M. Sanderson, P. Chenoweth

Kansas Agricultural Experiment Station Research Reports

Breeding-soundness evaluations are a common tool in the beef industry to test a bull's potential fertility. These evaluations place a bull into one of three categories: satisfactory, unsatisfactory, or deferred. These categories only refer to the bull at a specific time, and his status can and will change over time. The purpose of this report is to explain and demonstrate the changes in a bull's breeding- soundness evaluations during a breeding season.

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Evaluation Of Nitrogen Availability In Liquid Feedstuffs, E.A. Elwakeel, Evan C. Titgemeyer, James S. Drouillard Jan 2004

Evaluation Of Nitrogen Availability In Liquid Feedstuffs, E.A. Elwakeel, Evan C. Titgemeyer, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

We developed an in vitro assay to assess ruminal availability of protein in liquid feeds containing soluble protein/nitrogen. Microbial mass accumulating as a result of assimilation of dietary nitrogen by ruminal microbes during an in vitro fermentation is measured. In the assay, microbial growth is most limited by the availability of protein/nitrogen, so microbial mass is proportional to the amount of available nitrogen in the sample. In liquid feeds that we generated in the laboratory, ruminal nitrogen availability decreased in response to mild heating, and the decline was greater for feedstuffs containing true protein rather than urea. Addition of salt …

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Effects Of Ammonia Load On Amino Acid Utilization By Growing Steers, M.S. Awawdeh, K.C. Mccuistion, D.P. Gnad, Evan C. Titgemeyer Jan 2004

Effects Of Ammonia Load On Amino Acid Utilization By Growing Steers, M.S. Awawdeh, K.C. Mccuistion, D.P. Gnad, Evan C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Ruminally cannulated steers were used in two experiments to study effects of rumen ammonia load on methionine and leucine utilization. All steers were limit-fed a diet based on soybean hulls, received ruminal infusions of volatile fatty acids and abomasal infusions of glucose to provide energy, and received an abomasal infusion containing a mixture of all essential amino acids except methionine in Exp. 1 or leucine in Exp. 2. Treatments were arranged as 3 x 2 factorials and included urea (0, 40, or 80 g/day) infused ruminally and methionine (2 or 5 g/day) infused abomasally in Exp. 1 and leucine (0, …

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Failure To Eliminate The Carrier State Of Anaplasma Marginale By Using Long-Acting Injectable Oxytetracycline, D. Gnad, T. Marston, Donald A. Llewellyn, G. Palmer, Larry C. Hollis Jan 2004

Failure To Eliminate The Carrier State Of Anaplasma Marginale By Using Long-Acting Injectable Oxytetracycline, D. Gnad, T. Marston, Donald A. Llewellyn, G. Palmer, Larry C. Hollis

Kansas Agricultural Experiment Station Research Reports

Thirty-four Anaplasma marginale seropositive cows from a herd of 236 were allocated to treatments: 5 animals served as untreated controls, and 29 animals were treated with three injections of long-acting oxytetracycline at three-day intervals. Fourteen days after initiation of treatment, 100% of control cows and 89% of treated cows were found to have Anaplasma marginale present. Seventyfour days after initiation of treatment, 100% of control cows and 86% of treated cows were found to have Anaplasma marginale present. Use of injectable long-acting oxytetracycline was not effective in eliminating the carrier state of Anaplasma marginale from infected animals.

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Effects Of Ratio Of Total Sulfur Amino Acid To Lysine On Finishing-Pig Growth Performance (2004), K R. Lawrence, C N. Goesbeck, C R. Neill, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz Jan 2004

Effects Of Ratio Of Total Sulfur Amino Acid To Lysine On Finishing-Pig Growth Performance (2004), K R. Lawrence, C N. Goesbeck, C R. Neill, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to characterize the growth response to total sulfur amino acids (TSAA) and lysine simultaneously to estimate the true-ileal-digestible (TID) TSAA-to-lysine ratio in early finishing pigs. One hundred and twenty-six pigs were used in a 27-d growth study. Pigs (73 to 134 lb) were blocked by sex and weight and were allotted to one of nine dietary treatments with five TID lysine (0.79, 0.87, 0.94, 1.02 and 1.10%) and five TID TSAA (0.53, 0.57, 0.61, 0.66 and 0.70%) concentrations. The highest lysine (1.10%) and TSAA (0.70%) concentrations were combined to form one treatment used in …

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Determination Of The Apparent And True Ileal Amino Acid Digestibility And Digestible And Metabolizable Energy Of Specialty Protein Sources Intended For Nursery Pig Diets (2004), R O. Gottlob, C W. Hastad, K R. Lawrence, D A. Knabe, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2004

Determination Of The Apparent And True Ileal Amino Acid Digestibility And Digestible And Metabolizable Energy Of Specialty Protein Sources Intended For Nursery Pig Diets (2004), R O. Gottlob, C W. Hastad, K R. Lawrence, D A. Knabe, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to determine the apparent and true-ileal amino acid digestibility, and to determine the digestible energy and metabolizable energy values of rice protein concentrate, salmon protein hydrolysate, whey protein concentrate, and spray-dried animal plasma. The experimental ingredients were analyzed for essential and non-essential amino acids and crude protein so diets could be formulated. In Exp.1, pigs were fed each diet, and ileal digesta was collected and analyzed. Apparent and true digestibilities were then calculated. In Exp. 2, pigs were fed each diet and feces were collected, weighed, and sampled. Lab analyses were conducted for the determination of …

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Responses Of Lactating Holstein Cows To Differing Levels And Direction Of Supplemental Airflow (2004), Joseph P. Harner, John F. Smith, W.F. Miller, B. Cvetkovic Jan 2004

Responses Of Lactating Holstein Cows To Differing Levels And Direction Of Supplemental Airflow (2004), Joseph P. Harner, John F. Smith, W.F. Miller, B. Cvetkovic

Kansas Agricultural Experiment Station Research Reports

Seven heat-stressed, lactating Holstein cows were exposed to six different cooling systems to evaluate the effects of air velocity and direction of airflow. Cows were arranged in a 7 x 7 Latin-square design. Six cooling treatments were compared with a control. Supplemental airflow was provided by axial flow at one of three velocities: 500, 750, or 900 cubic feet per minute (CFM). Airflow was either from the front to rear (FRT) or from the right side (SIDE) of the cow. Combined cooling treatments were FRT-500, FRT- 750, FRT-900, SIDE-500, SIDE-750, or SIDE-900. All cooling systems used a lowpressure soaking system …

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Inseminations At Estrus Induced By The Presynch Protocol Before Timed Artification Insemination (2004), A.P. Phatak, Jeffrey S. Stevenson Jan 2004

Inseminations At Estrus Induced By The Presynch Protocol Before Timed Artification Insemination (2004), A.P. Phatak, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

A controlled field study examined conception rates after two timed-AI (TAI) breeding protocols conducted on two commercial dairy farms. Estrous cycles in postpartum lactating cows were presynchronized with two injections of PGF2" given 14 days apart (Presynch) and then, after 12 days, the standard Ovsynch protocol (injection of GnRH 7 days before and 48 h after an injection of PGF2", with one TAI at 12 to 16 hours after the second GnRH injection) or Heatsynch protocol (injection of GnRH 7 days before an injection of PGF2", followed 24 h later by 1 mg of estradiol cypionate (ECP) and one TAI …

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Evaluation Of Topical Antioxidants And Packaging Materials To Decrease The Incidence Of Bone Discoloration In Pork Retail Cuts (2004), C R. Raines, Michael E. Dikeman Jan 2004

Evaluation Of Topical Antioxidants And Packaging Materials To Decrease The Incidence Of Bone Discoloration In Pork Retail Cuts (2004), C R. Raines, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Color characteristics were evaluated on 48 pork backbones. After 6 d postmortem, six 1- inch-thick sections of lumbar vertebrae were cut from each backbone. Lumbar vertebrae were treated with different concentrations of ascorbic acid, with combination treatments of ascorbic acid and natural antioxidants, or left untreated. Bones were packaged in one of three systems: high-oxygen modifiedatmosphere packaging (MAP), ultra-lowoxygen MAP, or polyvinyl chloride (PVC) overwrap trays. Bones were visually evaluated by a trained panel on d 0, 1, 2, 3, 4, 5, and 8. Lightness (L*) was also measured on d 0, 2, and 8 of display. After 8 d …

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Southwest Research-Extension Center Field Day 2004 Jan 2004

Southwest Research-Extension Center Field Day 2004

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.

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Kansas Fertilizer Research 2003, Ray E. Lamond Jan 2004

Kansas Fertilizer Research 2003, Ray E. Lamond

Kansas Agricultural Experiment Station Research Reports

No abstract provided.

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Field Research 2003, Dale L. Fjell Jan 2004

Field Research 2003, Dale L. Fjell

Kansas Agricultural Experiment Station Research Reports

No abstract provided.

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2004 Agricultural Research Southeast Agricultural Research Center, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service Jan 2004

2004 Agricultural Research Southeast Agricultural Research Center, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service

Kansas Agricultural Experiment Station Research Reports

No abstract provided.

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Effect Of A New Teat Dip On Somatic Cell Count, Incidence Of Mastitis, And Milk Production In A Commercial Dairy (2004), John E. Shirley, W.F. Miller, J. Rottinghaus, Evan C. Titgemeyer Jan 2004

Effect Of A New Teat Dip On Somatic Cell Count, Incidence Of Mastitis, And Milk Production In A Commercial Dairy (2004), John E. Shirley, W.F. Miller, J. Rottinghaus, Evan C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Five hundred and thirty Holstein cows located in a commercial dairy herd near Birdseye, Indiana, were used to evaluate an iodophor (0.50% iodine) teat dip containing a new conditioner. The new teat dip (Dinerin) was evaluated against a common commercial teat dip (WestAgro Iodozyne pre-dip and West- Agro Blockade post dip). The study was conducted February 17 through June 25, 2004. Cows treated with Dinerin teat dip had lower somatic cell counts and produced more milk than those treated with the WestAgro products.; Dairy Day, 2004, Kansas State University, Manhattan, KS, 2004;

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Performance Of Lactating Dairy Cows Fed Yeast And Fibrolytic Enzymes (2004), Evan C. Titgemeyer, B.J. Johnson, John E. Shirley Jan 2004

Performance Of Lactating Dairy Cows Fed Yeast And Fibrolytic Enzymes (2004), Evan C. Titgemeyer, B.J. Johnson, John E. Shirley

Kansas Agricultural Experiment Station Research Reports

We evaluated the effect of supplementing typical dairy diets with yeast and fibrolytic enzymes on dairy cow performance. Twentyfour Holstein cows were used to evaluate the effects of yeast (Procreatin-7, a live culture of Saccharomyces cerevisiae) and various amounts of FP800 (a fibrolytic enzyme mixture) on lactation performance. Treatments were arranged in a 4 x 2 factorial design consisting of 8 treatments: 0, 5, 10, or 15 g of FP800 per day and 0 or 5 g of Procreatin-7 per day. Design and conduct of the experiment allowed at least 10 observations in each of the 8 treatment combinations. Within …

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Impact Of Soaking Cows Housed In A Tunnel-Ventilated, Evaporative-Cooled Barn In Thailand (2004), D.V. Armstrong, John F. Smith, V Wuthironarith, Joseph P. Harner Jan 2004

Impact Of Soaking Cows Housed In A Tunnel-Ventilated, Evaporative-Cooled Barn In Thailand (2004), D.V. Armstrong, John F. Smith, V Wuthironarith, Joseph P. Harner

Kansas Agricultural Experiment Station Research Reports

Ten multiparous lactating Holstein cows were arranged in a replicated 5 x 5 Latin Square design to evaluate the effect of soaking frequency and volume of water per soaking on lactating cows housed in a tunnel-ventilated and evaporative-cooled freestall barn. Rectal temperature, respiration rate, and body surface temperatures were measured every 5 minutes. Treatments were: control (C); soaking every 5 minutes with 0.26 gallons (5L); soaking every 5 minutes with 0.53 gallons (5H); soaking every 10 minutes with 0.26 gallons (10L); or soaking every 10 minutes with 0.53 gallons (10H). Average ambient temperature and humidity were 86.5ºF and 68% outside …

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Impact Of Dried Seaweed Meal On Heat-Stressed Lactating Dairy Cattle (2004), B. Cvetkovic, John E. Shirley, Michael J. Brouk Jan 2004

Impact Of Dried Seaweed Meal On Heat-Stressed Lactating Dairy Cattle (2004), B. Cvetkovic, John E. Shirley, Michael J. Brouk

Kansas Agricultural Experiment Station Research Reports

Twenty-four lactating Holstein cows were used to determine the production response to the inclusion of brown seaweed in the basal diet during summer heat stress. Cows were blocked by lactation number, days in milk, and energy-corrected milk and then allotted to either a control or control + brown seaweed diet. Cattle on the brown seaweed diet were fed 4 ounces per cow per day for 7 days , and then 2 ounces per cow per day for 14 days, before the start of the experiment. All cattle were housed in a tie-stall barn, fed individually, and milked twice daily. Cows …

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Resynchronizing Estrus And Ovulation In Open Cows And Heifers (2004), S.M. Tiffany, Jeffrey S. Stevenson Jan 2004

Resynchronizing Estrus And Ovulation In Open Cows And Heifers (2004), S.M. Tiffany, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

We compared outcomes of two protocols used to resynchronize estrus and ovulation in dairy females after found open at pregnancy checks. Replacement heifers and lactating cows in which AI occurred 41 ± 1 day earlier were presented every 2 to 3 weeks for a pregnancy check by ultrasonography. Ovaries were scanned, follicles were mapped and sized, presence of corpus luteum was noted, and GnRH was injected (day 0) . Females received PGF2" 7 days later (day 7) and then were assigned randomly to either receive estradiol cypionate (ECP) 24 hours after PGF2" (day 8; Heatsynch; n = 230) or a …

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Responses Of Lactating Holstein Cows To Low-Pressure Soaking Or High-Pressure Misting During Heat Stress (2004), Joseph P. Harner, John F. Smith, W.F. Miller, B. Cvetkovic Jan 2004

Responses Of Lactating Holstein Cows To Low-Pressure Soaking Or High-Pressure Misting During Heat Stress (2004), Joseph P. Harner, John F. Smith, W.F. Miller, B. Cvetkovic

Kansas Agricultural Experiment Station Research Reports

Lactating dairy cattle were used to evaluate three different cooling systems. Eight cows were arranged in a replicated Latinsquare design and assigned to each of four treatments. Treatments were control, lowpressure soaking (LPS), high-pressure misting with 1.7 gallons per minute of water (HP-1.7), or high-pressure misting with 3.4 gallons per minute of water (HP-3.4). Cows were allowed to become heat stressed in a free-stall facility, and then were moved to a tie-stall barn for 2 hours of observations during four hot and humid afternoons. Respiration rates declined when heat abatement systems were used. Respiration rates at the end of the …

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Director's Report Of Research In Kansas 2003, Kansas State University. Agricultural Experiment Station Jan 2004

Director's Report Of Research In Kansas 2003, Kansas State University. Agricultural Experiment Station

Kansas Agricultural Experiment Station Research Reports

This report contains the title, author, and publication information for manuscripts published by station scientists. It also contains a list of the research projects that were active during that period and a financial statement for the fiscal year.

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Using Regumate To Control Estrus In Swine (2004), Duane L. Davis Jan 2004

Using Regumate To Control Estrus In Swine (2004), Duane L. Davis

Kansas Agricultural Experiment Station Research Reports

Altrenogest, marketed for use in horses as Regumate, is a synthetic progestin that is marketed for use in pigs as MATRIX. It effectively regulates the occurrence of estrus in randomly cycling gilts if it is provided for 14 or more days at a daily dose of 15 mg/day. It is important to assure that each gilt receives her full dose; otherwise problems of cystic follicles and reduced fertility may be observed.; Swine Day, 2004, Kansas State University, Manhattan, KS, 2004

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The Optimal True-Ileal-Digestible Lysine And Total Sulfur Amino Acid Requirement For Nursery Pigs Between 20 And 50 Lb (2004), J D. Schneider, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2004

The Optimal True-Ileal-Digestible Lysine And Total Sulfur Amino Acid Requirement For Nursery Pigs Between 20 And 50 Lb (2004), J D. Schneider, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

An experiment was conducted with 360 pigs (PIC, avg BW = 22.7 lb) to determine the appropriate true-ileal-digestible (TID) lysine and total sulfur amino acid (TSAA) requirement of nursery pigs, and consequently to determine the optimal TSAA-to-lysine ratio. This trial was organized as a combination of two simultaneous experiments, with one set of diets consisting of five treatments with increasing TID lysine (0.9, 1.0, 1.1, 1.2, and 1.3%) and the second set of diets consisting of five treatments with increasing TID TSAA (0.56, 0.62, 0.68, 0.74, and 0.81%). The highest concentrations of both lysine and TSAA (1.3% and 0.81%, respectively) …

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Determining The Optimal Lysine To Calorie Ratio For Growth Performance Of 20- To 50-Lb Genetiporc Nursery Pigs (2004), J D. Schneider, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2004

Determining The Optimal Lysine To Calorie Ratio For Growth Performance Of 20- To 50-Lb Genetiporc Nursery Pigs (2004), J D. Schneider, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two studies were conducted to evaluate the effects of increasing dietary lysine and energy density on nursery-pig performance. Exp. 1 was organized as a combination of two simultaneous experiments, with one set of diets consisting of five treatments with increasing TID lysine (0.99, 1.07, 1.14, 1.22, and 1.30%) concentrations, and the second set of diets consisting of five treatments with increasing energy density (1342, 1406, 1471, 1535, and 1600 kcal/lb). The highest l of both lysine and energy density (1.30% and 1600 kcal/lb, respectively) were combined as one diet and used in both the lysine and energy-density titrations to give …

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