Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

PDF

2006

Journal

Kansas Agricultural Experiment Station Research Reports

Discipline
Keyword

Articles 1 - 30 of 66

Full-Text Articles in Entire DC Network

Determining The Accuracy Of Gestation Feed Drops (2006), J D. Schneider, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2006

Determining The Accuracy Of Gestation Feed Drops (2006), 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 to determine the accuracy of three different gestation feed drops. Each drop was tested at three different angles (90, 75, 60°) from the feed line. Feed was collected and weighed at feeder settings of 2, 4, 6, 8, and 10 lb for the Econo- Drop and Accu-Drop feed dispensers. Samples were taken at 2, 4, 6, and 8 lb for the Ultra- Drop feed dispenser due to a smaller storage capacity for feed with this feed drop. There were five replications (five drops of each type) at each feed setting. There was a drop type by …

Go to article

Southwest Research-Extension Center Field Day 2006 Jan 2006

Southwest Research-Extension Center Field Day 2006

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.

Go to article

Southwest Research-Extension Center Field Day 2006 Forage Research Supplement Jan 2006

Southwest Research-Extension Center Field Day 2006 Forage Research Supplement

Kansas Agricultural Experiment Station Research Reports

This publication is a supplement to Field Day 2006, Southwest Research-Extension Center Report of Progress SRP 961 from the Kansas Agricultural Experiment Station.

Go to article

Kansas Fertilizer Research 2005, Dale F. Leikam Jan 2006

Kansas Fertilizer Research 2005, Dale F. Leikam

Kansas Agricultural Experiment Station Research Reports

No abstract provided.

Go to article

An Investigation Into The Mechanisms Of Action Of Revalor-S And Optaflexx In Growing Steers, D.K. Walker, James J. Higgins, B.J. Johnson, Evan C. Titgemeyer Jan 2006

An Investigation Into The Mechanisms Of Action Of Revalor-S And Optaflexx In Growing Steers, D.K. Walker, James J. Higgins, B.J. Johnson, Evan C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

An experiment was conducted to evaluate the interaction between steroidal implantation and feeding ractopamine on nitrogen retention, blood metabolites, and messenger RNA (mRNA) expression. Six Holstein steers (initially weighing 509 lb) were implanted or not with Revalor-S (120 mg trenbolone acetate plus 24 mg estradiol-17β), and all were fed no ractopamine for the initial 28 days and then 2 grams per steer daily of Optaflexx (200 mg/day ractopamine-HCl) on days 29 through 56. Implantation increased nitrogen retention. Optaflexx increased nitrogen retention in nonimplanted steers, but did not significantly increase retained nitrogen in implanted steers. Implantation increased serum insulin-like growth factor …

Go to article

Effect Of Implant Strategy And Optaflexx Administration On Feedlot Performance And Skeletal Muscle Β-Adrenergic Receptor And Insulin-Like Growth Factor I Mrna Abundance, E.K. Sisson, J.P. Hutcheson, D.A. Yates, B.J. Johnson Jan 2006

Effect Of Implant Strategy And Optaflexx Administration On Feedlot Performance And Skeletal Muscle Β-Adrenergic Receptor And Insulin-Like Growth Factor I Mrna Abundance, E.K. Sisson, J.P. Hutcheson, D.A. Yates, B.J. Johnson

Kansas Agricultural Experiment Station Research Reports

Feedlot heifers (1,147) weighing 622 lb were used to evaluate the effects of implant strategy and Optaflexx administration. Implant treatments included Revalor-200 (R200) at arrival, or Revalor-IH at arrival and reimplantation with Finaplix-H on day 58 (RF). Optaflexx (200 mg/heifer daily of ractopamine-HCl) was fed the last 28 days. Treatments were randomly assigned to 16 pens. After 182 days, heifers were slaughtered, at which time carcass data were obtained and semimembranosus muscle tissue was excised for RNA isolation. Optaflexx administration significantly increased average daily gain (0.7 lb/day), feed efficiency (3%), hot carcass weight (10.5 lb), and ribeye area (0.42 square …

Go to article

A Novel Method To Dry Age Beef By Using Vacuum Packaging, M.L. Ahnström, M. Seyfert, Melvin C. Hunt, D.E. Johnson Jan 2006

A Novel Method To Dry Age Beef By Using Vacuum Packaging, M.L. Ahnström, M. Seyfert, Melvin C. Hunt, D.E. Johnson

Kansas Agricultural Experiment Station Research Reports

The traditional dry-aging method for beef was compared with a novel technique of dry aging in a highly moisture-permeable vacuum bag. Paired beef strip loins were cut into four sections and were dry aged traditionally (unpackaged) or packaged in the novel bag for 14 or 21 days. Cooking loss, tenderness, juiciness, and all flavor attributes were similar for the aging methods. Beef dry aged in the bag had less weight loss during aging, less trim loss after 21 days, and lower yeast counts after either aging time, compared with beef dry aged unpackaged. This novel method of dry aging beef …

Go to article

Accelerated And “Natural” Production-System Effects On Performance And Carcass Traits, L. Veloso, E. Loe, John A. Unruh Jan 2006

Accelerated And “Natural” Production-System Effects On Performance And Carcass Traits, L. Veloso, E. Loe, John A. Unruh

Kansas Agricultural Experiment Station Research Reports

Sixteen crossbred steers were used to compare performance and carcass characteristics of animals from accelerated and "natural" cattle production systems. Steers in the accelerated group (8 head) were implanted with Component TE-S (120 mg of trenbolone acetate, 24 mg estradiol), and received 200 mg/steer daily of ractopamine-HCl (Optaflexx) during the last 33 days of feeding. Tylan and Rumensin were also fed to the accelerated group. "Natural" steers were not implanted and were not given feed additives. Steers in the accelerated group had improved gain; heavier final weights; heavier carcasses; larger ribeye areas; and less kidney, pelvic, and heart fat. "Natural" …

Go to article

Growth Performance Of Nursery Pigs Fed Biosaf In Combination With In-Feed Antimicrobials (2006), B M. Hildabrand, T E. Burkey, K A. Skjolaas, B J. Johnson, J Ernest Minton, Steven S. Dritz Jan 2006

Growth Performance Of Nursery Pigs Fed Biosaf In Combination With In-Feed Antimicrobials (2006), B M. Hildabrand, T E. Burkey, K A. Skjolaas, B J. Johnson, J Ernest Minton, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Weaned pigs (n = 240; initial BW 13.5 lb) were used in a 28-d growth study. Pigs were blocked by sex and BW, and were assigned randomly to 1 of the 5 dietary treatments: control (no added antimicrobials or yeasts), Neo- Terramycin4 (Neo-Terra; control diet plus Neo-Terra), Denagard5 (control diet plus Denagard PLUS), Neo-Terra+BIOSAF (control diet plus Neo-Terra and 0.15% BIOSAF yeast), or Denagard+BIOSAF (control diet plus Denagard and 0.15% BIOSAF yeast). There were 8 pens per treatment and 6 pigs per pen. Treatments were applied in both Phase 1 (d 0 to 14) and Phase 2 (d 15 to …

Go to article

Swine Day 2004, Kansas Agricultural Experiment Station Jan 2006

Swine Day 2004, Kansas Agricultural Experiment Station

Kansas Agricultural Experiment Station Research Reports

No abstract provided.

Go to article

K-State Turfgrass Research 2006, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service Jan 2006

K-State Turfgrass Research 2006, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service

Kansas Agricultural Experiment Station Research Reports

Turfgrass Research 2006 contains results of projects done by K-State faculty and graduate students. Some of these results will be presented at the Kansas Turfgrass Field Day at the Rocky Ford Turfgrass Research Center in Manhattan on August 3, 2006. The enclosed articles present summaries of research projects that have been recently completed, or will be completed in the next year or two. This year's report presents summaries of research on environmental stresses, turfgrass establishment and culture, and cultivar evaluations.

Go to article

Measuring Scope Efficiency For Crop And Beef Farms, Michael R. Langemeier, R.D. Jones Jan 2006

Measuring Scope Efficiency For Crop And Beef Farms, Michael R. Langemeier, R.D. Jones

Kansas Agricultural Experiment Station Research Reports

This study evaluated scope efficiency (the degree of efficiency gained from producing more than one product within the same farm) for a sample of crop and beef farms in Kansas. Scope and economic efficiency were estimated for each individual farm. Average scope efficiency was 0.25, indicating that joint production of crop and beef enterprises on the same farm reduced cost approximately 25%. Scope efficiency was significantly higher for smaller farms. Despite the relatively higher scope efficiency levels, economic efficiency (relative cost efficiency) was significantly lower for smaller farms. Economic efficiency is related to cost control and economies of size, which …

Go to article

Milk Quality As A Function Of Temperature-Cycled, Reduced-Fat Milk Stored In Various Size Containers (2006), L.F. Julstron, Karen A. Schmidt Jan 2006

Milk Quality As A Function Of Temperature-Cycled, Reduced-Fat Milk Stored In Various Size Containers (2006), L.F. Julstron, Karen A. Schmidt

Kansas Agricultural Experiment Station Research Reports

Packaged, reduced-fat milk was subjected to a 20 min/day temperature cycle during a 7-day refrigeration period to determine the effect on milk quality. Temperature cycling did not affect the compositional or microbial counts in reduced-fat milk stored in various package sizes. Analysis of headspace compounds during the 7 days of storage, however, showed that benzaldehyde, 2-butanone, 2-heptanone, hexanal, and octanal concentrations significantly changed, indicating that milk flavor was altered. Concentration of heptanal, a compound associated with lipid oxidation, was higher in milk packaged in half-gallon and 1-gallon containers, compared; Dairy Day, 2006, Kansas State University, Manhattan, KS, 2006;

Go to article

Effects Of Dried Distillers Grain With Solubles On Nursery Pig Performance (2006), S K. Linneen, M U. Steidinger, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2006

Effects Of Dried Distillers Grain With Solubles On Nursery Pig Performance (2006), S K. Linneen, M U. Steidinger, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 482 pigs (initial BW of 21.9 lb) were used in a 22-d study to determine the effects of dried distillers grains with solubles (DDGS) on growth performance of nursery pigs reared in a commercial environment. Pigs were allotted to one of two dietary treatments based on corn-soybean meal and containing either 0 or 10% DDGS. There was a tendency for pigs fed the diet containing 10% DDGS to have decreased (P<0.13) ADG, compared with pigs not fed DDGS (0.95 vs. 0.88 lb/d). Overall (d 0 to 22), there were no differences in ADFI, F/G, or final weight (P>0.21). For economic analysis, the DDGS price was compared at $109, $93, or $80/ton. There were no differences in feed cost per pound of gain in …

Go to article

Examining Death Loss In Kansas Feedlots, A. Babcock, R. Jones, Michael R. Langemeier Jan 2006

Examining Death Loss In Kansas Feedlots, A. Babcock, R. Jones, Michael R. Langemeier

Kansas Agricultural Experiment Station Research Reports

This study had three primary objectives: 1) to determine if there is an annual and/or seasonal trend in percentage of death loss in Kansas feedlots; 2) to examine the difference in death loss between steers and heifers; and 3) to evaluate if "in" weight has had an effect on percentage of death loss in Kansas feedlots. The annual trend in death loss for both steers and heifers was found to be significant and positive, indicating that death loss has been increasing over the sample period. Seasonal increases in death loss were significant for early-spring closeouts for both steers and heifers. …

Go to article

Comparison Of Cidr To Mga In A 7-11 Cosynch Protocol With Timed Insemination Of Beef Heifers, D.R. Eborn, G.E. Freneau, David M. Grieger Jan 2006

Comparison Of Cidr To Mga In A 7-11 Cosynch Protocol With Timed Insemination Of Beef Heifers, D.R. Eborn, G.E. Freneau, David M. Grieger

Kansas Agricultural Experiment Station Research Reports

Previous research has shown that the 7-11 Cosynch protocol using melengestrol acetate (MGA) is effective in synchronizing beef heifers. This study compared MGA and a vaginal insert containing progesterone (CIDR) in the 7-11 Cosynch protocol on beef heifers. Replacement beef heifers (n=179) from three herds were assigned to MGA or CIDR treatments. Beginning on day 1, heifers on the MGA treatment were fed to consume 0.5 mg daily of MGA for 7 days. On day 7, the last day of MGA feeding, the MGA heifers received an injection of Lutalyse (PGF). Heifers on the CIDR treatment received a CIDR on …

Go to article

Color Of Cooked Ground Beef Patties Is Affected By Cooking Rate And Post-Cooking Holding Time, S.M. Ryan, M. Seyfert, Melvin C. Hunt, R.A. Mancini Jan 2006

Color Of Cooked Ground Beef Patties Is Affected By Cooking Rate And Post-Cooking Holding Time, S.M. Ryan, M. Seyfert, Melvin C. Hunt, R.A. Mancini

Kansas Agricultural Experiment Station Research Reports

Two experiments investigated the effects of cooking rate and post-cooking holding time on the internal cooked color of ground beef patties. In Experiment 1, patties were cooked rapidly (1.8ºF/second) or slowly (0.4ºF/second). At temperatures below 180ºF, rapidly cooked patties were redder and appeared less well done than those cooked slowly. All slowly cooked patties appeared well done, even at unsafe final internal temperatures. In Experiment 2, patties were cooked rapidly and held for 1, 3, 6, or 12 minutes after cooking. Increasing the post-cooking holding time to 6 minutes after rapid cooking decreased pinkness and maximized well-done appearance. This allowed …

Go to article

Dairy Research 2006, Kansas Agricultural Experiment Station Jan 2006

Dairy Research 2006, Kansas Agricultural Experiment Station

Kansas Agricultural Experiment Station Research Reports

No abstract provided.

Go to article

The Effects Of Flaxlic Block Supplementation On Finishing Feedlot Heifers, M.J. Quinn, E.R. Loe, A.S. Webb, M.E. Corrigan, James S. Drouillard, Brandon E. Depenbusch Jan 2006

The Effects Of Flaxlic Block Supplementation On Finishing Feedlot Heifers, M.J. Quinn, E.R. Loe, A.S. Webb, M.E. Corrigan, James S. Drouillard, Brandon E. Depenbusch

Kansas Agricultural Experiment Station Research Reports

An experiment was conducted to determine the effects of FlaxLic supplement blocks, fed free-choice during feedlot finishing, on heifer performance, carcass quality, and fatty acid profiles of loin steaks. Heifers (n=302, 1059±7 lb initial bodyweight) were fed diets based on steam-flaked corn. Cattle were assigned to dirt surfaced pens (12 to 13 heifers/pen, 12 pens/treatment). Treatments consisted of control (no block) or FlaxLic free-choice block supplements. Loins were obtained from three animals randomly selected from each pen for measurement of fatty acid profiles. Average daily gain and feed:gain were not different over the 75-day feeding trial. Dry matter intake was …

Go to article

Performance Of Calves Born To Beef Cows Seropositive But Subclinical For Bovine Leukosis Virus, Donald A. Llewellyn, K.L. Teutemacher, T.T. Marston, M.W. Sanderson, Larry C. Hollis Jan 2006

Performance Of Calves Born To Beef Cows Seropositive But Subclinical For Bovine Leukosis Virus, Donald A. Llewellyn, K.L. Teutemacher, T.T. Marston, M.W. Sanderson, Larry C. Hollis

Kansas Agricultural Experiment Station Research Reports

Calves from a commercial beef herd were evaluated for weight gain differences based upon the bovine leukosis virus (BLV) serological status of their dams. One hundred forty-two multiparous cows from a commercial beef herd were tested for BLV by agar gel immunodiffusion. Eighty-nine cows (62.6%) were found to be seropositive for BLV. Weights were collected from all calves at weaning, from heifers on the date when selection of replacement heifers was made, and from steers on the day of harvest after being fed to finish weight in a feedlot. Offspring from seronegative cows tended to have heavier weaning weights (+17 …

Go to article

Comparison Of Corn And Grain Sorghum Dried Distillers Grains As Protein Supplements For Growing Beef Heifers, K.W. Harborth, T.T. Marston, Donald A. Llewellyn Jan 2006

Comparison Of Corn And Grain Sorghum Dried Distillers Grains As Protein Supplements For Growing Beef Heifers, K.W. Harborth, T.T. Marston, Donald A. Llewellyn

Kansas Agricultural Experiment Station Research Reports

An experiment was conducted to determine if corn and grain sorghum dried distillers grains could be effective protein supplements for growing beef replacement heifers. Crossbred heifers (n=77) were individually fed 6 lb/heifer daily (dry matter basis) of supplements containing 20% crude protein. The three supplements compared were: 1) 50% cracked corn, 25% soybean meal, and 25% ground grain sorghum; 2) 50% cracked corn and 50% corn distillers grains with solubles; and 3) 50% cracked corn, 31% sorghum distillers grains with solubles, and 19% ground grain sorghum. Heifers grazed a common native- grass pasture and had free-choice access to smooth broom …

Go to article

Variation In Performance Of Electronic Cattle Ear Tags And Readers, A.M. Bryant, B.B. Barnhardt, M.P. Epp, S.J. Glaenzer, Dale A. Blasi Jan 2006

Variation In Performance Of Electronic Cattle Ear Tags And Readers, A.M. Bryant, B.B. Barnhardt, M.P. Epp, S.J. Glaenzer, Dale A. Blasi

Kansas Agricultural Experiment Station Research Reports

This study was conducted to evaluate the performance of ISO 11785 radio frequency identification (RFID) cattle ear tags and readers under ideal laboratory conditions. Tag and reader manufacturer identities are masked to prevent unintentional conclusions being drawn about any particular tag or reader at this stage of the U.S. National Animal Identification System (US-NAIS) proposed plan. Eight commercially available tag designs were evaluated, and included the half-duplex and full-duplex air interface technologies. Performance parameters of interest for tags were tensile strength, tampering evidence characteristics, as well as the average reading range. Three fixed-antenna stationary readers were used to determine the …

Go to article

Examining Cost Of Gain In Kansas Feedlots, A. Babcock, R. Jones, Michael R. Langemeier Jan 2006

Examining Cost Of Gain In Kansas Feedlots, A. Babcock, R. Jones, Michael R. Langemeier

Kansas Agricultural Experiment Station Research Reports

This study had three primary objectives: 1) to examine the effects that individual performance and ingredient price factors have on cost of gain; 2) to quantify the annual and/or seasonal trend in cost of gain in Kansas feedlots; and 3) to examine the difference in cost of gain between steers and heifers. For both steers and heifers, corn price was significant and positive, indicating that as the price of corn increases so does cost of gain. The price of hay, which is a feedstuff in the majority of feedlot diets, has a positive, but insignificant, effect on feeding cost of …

Go to article

Effect Of Optaflexx And Days On Feed On Feedlot Performance, Carcass Characteristics, And Skeletal Muscle Gene Expression In Yearling Steers, S.J. Winterholler, G.L. Parsons, E.K. Sissom, J.P. Hutcheson, R.S. Swingle, B.J. Johnson Jan 2006

Effect Of Optaflexx And Days On Feed On Feedlot Performance, Carcass Characteristics, And Skeletal Muscle Gene Expression In Yearling Steers, S.J. Winterholler, G.L. Parsons, E.K. Sissom, J.P. Hutcheson, R.S. Swingle, B.J. Johnson

Kansas Agricultural Experiment Station Research Reports

Two-thousand two-hundred fifty-two yearling steers (690 lb) were used to evaluate the effects of Optaflexx and days on feed on finishing steer performance and carcass characteristics. Treatment groups included serial harvest dates of 150, 171, or 192 days. Within each harvest date, steers either received Optaflexx (200 mg/steer daily of ractopamine-HCl) for the final 28 days, or did not receive Optaflexx. All steers were initially implanted with Revalor-IS and were re-implanted with Revalor-S after 75 days on feed. At harvest, muscle samples from the inside round were obtained for mRNA analysis of the β- adrenergic receptors (AR). Optaflexx increased daily …

Go to article

2006 Agricultural Research Southeast Agricultural Research Center, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service Jan 2006

2006 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.

Go to article

Evaluation Of Ruminal Degradability And Lysine Bioavailability Of Four Soybean Meal Products (2006), M.S. Awawdeh, Evan C. Titgemeyer, James S. Drouillard, R. Scott Beyer Jan 2006

Evaluation Of Ruminal Degradability And Lysine Bioavailability Of Four Soybean Meal Products (2006), M.S. Awawdeh, Evan C. Titgemeyer, James S. Drouillard, R. Scott Beyer

Kansas Agricultural Experiment Station Research Reports

Evaluations of four soybean meal (SBM) products were conducted. The products were: solvent SBM (SSBM), expeller SBM (ESBM), lignosulfonate-treated SBM (LSBM), and SSBM treated with 0.05% Baker's yeast and toasted at 212ºF (YSBM). In situ ruminal degradations of YSBM and LSBM were slower than those of SSBM or ESBM; thus, ruminally undegraded protein contents of YSBM and LSBM were greater than those of SSBM or ESBM. The ruminally undegraded protein of all SBM products had similar small intestine digestibility when as-sessed by susceptibility to enzymatic digestion in vitro. Available lysine contents, estimated chemically or using standard chick growth assay, were …

Go to article

Efficiency Of Phosphorus Utilization In Dairy Operations (2006), Joseph P. Harner, Michael J. Brouk Jan 2006

Efficiency Of Phosphorus Utilization In Dairy Operations (2006), Joseph P. Harner, Michael J. Brouk

Kansas Agricultural Experiment Station Research Reports

Efficient utilization of nutrients is a must on modern dairies. Most of the phosphorus arriving at the dairy will either be found in purchased feedstuffs or commercial fertilizer used to raise grain and forage for the dairy. In general, those dairies that purchase all feeds are more efficient with phosphorus utilization than those that grow forage and grain. This is likely due to increased inefficiencies associ-ated with feeding and crop enterprises. Care-ful evaluation of diets to reduce feeding ex-cess phosphorus can reduce phosphorus excre-tion in the manure by as much as 50%. This not only reduces input costs, but also …

Go to article

Ovulation Potential Of Human Chorionic Gonadotropin Versus Gnrh (2006), B.S. Buttrey, M.G. Burns, Jeffrey S. Stevenson Jan 2006

Ovulation Potential Of Human Chorionic Gonadotropin Versus Gnrh (2006), B.S. Buttrey, M.G. Burns, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Experiments have shown human chorionic gonadotropin (hCG) to be more effective than GnRH as a means to induce ovulation of folli-cles. Dosages used, however, have differed greatly among experiments. A study was per-formed to determine the minimum effective dose of hCG needed to induce ovulation of ovarian follicles in dairy cows. Ovaries of Holstein cows were mapped by using transrec-tal ultrasonography 7 days before a bi-weekly pregnancy diagnosis. Cows were assigned randomly to treatments of saline, 100 μg of GnRH (2 mL of Fertagyl, Intervet, Inc., Mills-boro, NJ), or 500, 1000, 2000, or 3000 IU of hCG (0.5, 1, 2, …

Go to article

Predicting Growth Rates Of Adult Working Boars In A Commercial Boar Stud (2006), R C. Sulabo, J Quackenbush, Robert D. Goodband, Michael D. Tokach, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz Jan 2006

Predicting Growth Rates Of Adult Working Boars In A Commercial Boar Stud (2006), R C. Sulabo, J Quackenbush, Robert D. Goodband, Michael D. Tokach, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

There is almost no information on ideal growth rates for adult boars, but estimates can be made if the relationship between boar weight and age is known. Therefore, this study was aimed to predict growth rates in adult working boars in a commercial boar stud. A total of 214 adult working boars from two genetic lines in a commercial boar stud were individually weighed on a platform scale. Age of the boar was recorded at the time of weighing. A regression equation to predict boar weight as a function of age was developed by using PROC REG of SAS. The …

Go to article

Determining The Total Sulfur Amino Acid To Lysine Requirement Of The Lactating Sow (2006), J D. Schneider, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Steven S. Dritz Jan 2006

Determining The Total Sulfur Amino Acid To Lysine Requirement Of The Lactating Sow (2006), J D. Schneider, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 163 sows were used in a study to determine the requirement for total sulfur amino acids (TSAA), relative to lysine, during lactation. All experimental diets were cornsoybean meal-based and formulated to contain 0.88% true ileal digestible (TID) lysine (0.97% total lysine). The experimental diets contained 0.37% L-lysine HCl, with other crystalline amino acids added to ensure that TSAA was first limiting. The dietary TID TSAA rates were formulated to 0.44, 0.48, 0.53, 0.57, and 0.62%, corresponding to 50, 55, 60, 65, and 70% of lysine, respectively. Sows farrowed in six farrowing groups, and were randomly allotted to …

Go to article

Next Last