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Kansas Agricultural Experiment Station Research Reports

2006

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Full-Text Articles in Life Sciences

Responses Of Lactating Holstein Cows To Increasing Amounts Of Wet Corn Gluten Feed (2006), John F. Smith, K. Grigsby, Michael J. Brouk Jan 2006

Responses Of Lactating Holstein Cows To Increasing Amounts Of Wet Corn Gluten Feed (2006), John F. Smith, K. Grigsby, Michael J. Brouk

Kansas Agricultural Experiment Station Research Reports

Forty lactating Holstein cows were allocated into groups of 5 cows each and assigned to 8 pens containing 10 freestalls each. Each group contained 3 heifers and 2 multiparous cows. Groups were balanced by milk production and days in milk. Diets were formulated to contain none (control), 12, 24, or 36% wet corn gluten feed (WCGF) on a dry matter (DM) basis. Increasing amounts of WCGF and heat-treated expeller soybean meal replaced a portion of the corn silage, alfalfa hay, corn grain, soybean meal, and soybean hulls of the control diet to maintain similar concentrations of crude protein (CP), ruminally …

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Effects Of Spring Pasture Burning, Pasture Deworming, And Grain Supplementation On Performance Of Stocker Steers Grazing Native Flinthills Pasture (2006), B.B. Barnhardt, J.C. Forcherio, R.R. Scott, Christopher D. Reinhardt, Dale A. Blasi Jan 2006

Effects Of Spring Pasture Burning, Pasture Deworming, And Grain Supplementation On Performance Of Stocker Steers Grazing Native Flinthills Pasture (2006), B.B. Barnhardt, J.C. Forcherio, R.R. Scott, Christopher D. Reinhardt, Dale A. Blasi

Kansas Agricultural Experiment Station Research Reports

A grazing study was conducted using 445 crossbred beef steers (496 lb) to determine the benefits of feeding a grain-based supplementon burned and unburned native pasture, with and without a Safe-Guard (fenbendazole) treatment while on pasture. Treatments consisted of mineral only, mineral with Safe-Guard treatment at day 29, and a supplement based on dry-rolled corn with a Safe-Guard treatment on day 29. All three treatments provided GainPro to the steers. Twelve pastures were used, six that were burned and six that were not burned during the month before the start of the trial. The control pastures were stocked at 272 …

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The Effects Of Flaxlic Block Supplementation On Finishing Feedlot Heifers (2006), 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 (2006), 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 …

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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. …

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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.

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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.

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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 …

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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 …

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

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

Kansas Agricultural Experiment Station Research Reports

Forage supplement for report of agricultural research from Southwest Research-Extension Center of Kansas State University.

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Effects Of Increasing Amounts Of True Ileal Digestible Lysine On The Growth Performance Of Growing-Finishing Pigs Reared In A Commercial Facility (2006), R O. Gottlob, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz Jan 2006

Effects Of Increasing Amounts Of True Ileal Digestible Lysine On The Growth Performance Of Growing-Finishing Pigs Reared In A Commercial Facility (2006), R O. Gottlob, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two 28-d experiments using 2,259 gilts were conducted to determine the growth and economic effects of increasing dietary true ileal digestible (TID) lysine in commercially reared growing-finishing pigs. Both experiments included 6 dietary treatments of incrementally increasing TID lysine in diets containing 6% added fat. The dietary TID lysine ranged from below to above our current requirement estimates to determine if there were any changes in lysine requirements during the past five years. In Exp. 1, pigs were initially 132 lb and averaged 192 lb at the end of the 28-day study. The TID lysine rates were 0.65, 0.75, 0.85, …

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The Effects Of Electron Beam And Gamma Ray Irradiation Levels In Spray-Dried Animal Plasma On Nursery Pig Performance (2006), C N. Groesbeck, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2006

The Effects Of Electron Beam And Gamma Ray Irradiation Levels In Spray-Dried Animal Plasma On Nursery Pig Performance (2006), C N. Groesbeck, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 385 pigs (initially 13.4 ± 2.2 lb and 21 ± 3 d of age) were used in a 28-d trial to determine the effects of electron beam and gamma ray irradiation dosage of spray-dried animal plasma (plasma) on nursery pig performance. Pigs were allotted to pen and blocked by weight by using an incomplete block design with either 7 or 8 replications per treatment. Dietary treatments were randomly allotted to pen within block. Ten dietary treatments were fed from d 0 to 14, including: a negative control diet with no added plasma, a positive control diet with …

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Isoleucine In Segregated Early Weaning And Transition Diets (2006), S K. Linneen, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2006

Isoleucine In Segregated Early Weaning And Transition Diets (2006), S K. Linneen, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two studies were conducted to test the effect of isoleucine amount and source on nursery pig performance. In Exp. 1, a total of 194 pigs were used in a 10-d study in a research facility to test the effects of isoleucine rate in high or low lysine diets. Dietary treatments included either high or low lysine and high or low isoleucine in a 2 × 2 factorial arrangement. High-lysine diets were formulated to 1.56% TID lysine, and low-lysine diets were formulated to 1.30% TID lysine. Highisoleucine diets contained approximately 60% TID isoleucine:lysine, whereas low-isoleucine diets contained approximately 49% isoleucine: lysine. …

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L-Carnitine Supplementation To Gestating Gilts Alters The Igf Axis In Porcine Embyronic Myoblasts (2006), K R. Brown, B J. Johnson, J C. Woodworth, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen Jan 2006

L-Carnitine Supplementation To Gestating Gilts Alters The Igf Axis In Porcine Embyronic Myoblasts (2006), K R. Brown, B J. Johnson, J C. Woodworth, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

We determined the effects of supplemental L-carnitine on the insulin-like growth factor (IGF) system in porcine embryonic myoblasts (PEM) from gilts. Forty gilts (BW = 303.6 lb) were allotted to 1 of 4 treatments that were arranged in a 2 × 2 factorial, with main effects of L-carnitine (0 or 50 ppm) and day of gestation (55 or 70). All gilts were fed 3.86 lb/day and a top-dress containing either 0 or 50 ppm of L-carnitine, starting on the first day of breeding and continuing through the allotted gestation length. At d 55 or 70 of gestation, fetuses were removed …

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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.

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Effects Of Xylanase And Wheat Middlings In Diets For Finishing Pigs (2006), C Feoli, C R. Monge, C L. Jones, C W. Starkey, Joe D. Hancock Jan 2006

Effects Of Xylanase And Wheat Middlings In Diets For Finishing Pigs (2006), C Feoli, C R. Monge, C L. Jones, C W. Starkey, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

A total of 312 finishing pigs (average initial weight of 142 lb) were used in a 62-d experiment to determine the effects of xylanase and wheat middlings on growth performance, nutrient digestibility, and carcass characteristics. Treatments were a control diet based on corn-soybean meal, without and with 750 g/ton xylanase product (to supply none and 1,050 units of xylanase activity per lb of diet), and wheat middlings (none, 15%, and 30%) arranged as a 2 × 3 factorial. The pigs were sorted by sex and ancestry and blocked by weight, with 13 pigs/pen and 4 pens/treatment. Feed and water were …

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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 …

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Investigation Into The Effects Of Feeding Schedule On Body Condition, Aggressiveness, And Reproductive Failure In Group Housed Sows (2006), J D. Schneider, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2006

Investigation Into The Effects Of Feeding Schedule On Body Condition, Aggressiveness, And Reproductive Failure In Group Housed Sows (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

A total of 208 sows and 288 gilts (PIC Line C29) were used to determine the influence of feeding frequency (2 versus 6 times per day) in gestation on performance and welfare measurements. The experiment was conducted on a commercial sow farm in northeast Kansas that typically housed gestating sows and gilts in pens. Treatments consisted of feeding similar amounts of feed to each sow or gilt over 2 (07:00 and 15:30) or 6 meals per day (07:00, 07:30, 08:00, 15:30, 16:00, and 16:30 hours). There were 8 sows or 12 gilts in each pen. Gilts and sows were moved …

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Validation Of Flank-To-Flank Measurements For Predicting Boar Weight (2006), R C. Sulabo, J Quackenbush, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach, Joel M. Derouchey, Steven S. Dritz Jan 2006

Validation Of Flank-To-Flank Measurements For Predicting Boar Weight (2006), R C. Sulabo, J Quackenbush, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Allometric relationships, in which linear body dimensions are expressed as a function of body weight, are commonly used in growth studies. Previous work at Kansas State University showed a positive correlation between flank-to-flank measurement and sow body weight. Prediction equations were developed to estimate sow weight, but it is not known if the same equation will be valid in estimating body weight among other groups of pigs, such as boars. The objective of this study was to validate the use of flank-to-flank measurement in predicting boar weight, and to determine if the allometric equation for gestating sows can also be …

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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 …

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Effects Of Dried Distillers Grain With Solubles On Growing-Finishing Pig Performance (2006), S K. Linneen, R O. Gottlob, R G. Main, 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 Growing-Finishing Pig Performance (2006), S K. Linneen, R O. Gottlob, R G. Main, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Three experiments were conducted to determine the effects of increasing dried distiller's grains with solubles (DDGS) on growth performance and palatability in growing-finishing pigs. In Exp. 1, a total of 1,050 pigs (initially 104.9 lb) were used in a 28-d study in May 2002. Pigs were fed diets with either 0 or 15% DDGS and 0, 3, or 6% added fat, for a 2 × 3 factorial arrangement. Overall, there were no DDGS × fat content interactions (P = 0.20). There was an improvement (linear, P<0.01) in ADG and F/G with increasing added fat and no difference in growth performance between pigs fed 0 or 15% DDGS. In Exp. 2, a total of 1,038 pigs (initially 102.1 lb) were used in a 56-d study in August 2005. Pigs were fed diets with either 0, 10, 20, or 30% DDGS from the same ethanol plant as in Exp. 1. Overall (d 0 to 56), there was a trend for decreased ADG (linear, P<0.10) and ADFI (linear, P<0.06) as DDGS increased. The greatest reduction occurred in pigs fed more than 10% DDGS. In Exp. 3, a total of 120 growing pigs (initially 48.7 lb) were used in a 21-d feed preference study in October 2005. Pigs were randomly allotted to a pen with 4 feeders, each containing a separate dietary treatment. Pigs were offered diets based on corn-soybean meal, with 0, 10, 20, or 30% DDGS from the same source as in Exp. 1 and 2. For all periods (d 0 to 7, 7 to 21, and 0 to 21), there was a decrease in ADFI (quadratic, P<0.01) as DDGS increased in the diet. The most dramatic decrease was observed between 0 and 10% DDGS. Experiment 1 showed no difference in growth performance in pigs fed 0 or 15% DDGS. In Exp 2, at DDGS contents higher than 10%, there were trends for decreased ADG and ADFI; in Exp. 3, ADFI decreased with increasing DDGS in the diet. In summary, DDGS from the ethanol plant tested can be used at 10 to 15% in finishing diets without reducing pig performance. Higher percentages of DDGS in the diet decreased ADFI in growing and finishing pigs.; Swine Day, 2006, Kansas State University, Manhattan, KS, 2006

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Effect Of Irradiated Protein Sources, Fed In Meal Or Pelleted Diets, On Nursery Pig Performance (2006), C N. Groesbeck, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2006

Effect Of Irradiated Protein Sources, Fed In Meal Or Pelleted Diets, On Nursery Pig Performance (2006), C N. Groesbeck, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 350 pigs (initially 10.8 ± 2.1 lb and 21 ± 3 d of age) were used in a 22-d trial to determine the effects of feeding irradiated protein sources (spray-dried animal plasma, soybean meal, fish meal, or all three), in meal and pelleted diets, on the growth performance of nursery pigs. Pigs were blocked by weight, with 5 pigs/pen and 7 pens/treatment. From d 0 to 11, pigs were fed 1 of 10 experimental treatments, which consisted of the same diet fed in either meal or pelleted form, containing either no irradiated protein sources or containing irradiated …

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Effect Of Increased Dietary Lysine On Growth Performance Of Gilts Fed Ractopamine Hcl (Paylean) In A Commercial Facility (2006), C R. Neill, C W. Hastad, J L. Usry, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2006

Effect Of Increased Dietary Lysine On Growth Performance Of Gilts Fed Ractopamine Hcl (Paylean) In A Commercial Facility (2006), C R. Neill, C W. Hastad, 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 1,915 gilts (PIC L337 × C22) were used in two 21-d experiments in a commercial research barn to evaluate the effects of lysine rates on pig growth and carcass performance when fed ractopamine HCl. There were 7 replicates per treatment and 21 to 24 pigs per pen in both experiments. In both experiments, treatments included a control diet formulated to 0.65% TID lysine without ractopamine HCl, and diets containing 0.75, 0.85, 0.95, 1.05, and 1.15% TID lysine with 5 ppm ractopamine. There were 983 (initially 217.4 lb) and 932 (initially 226.2 lb) gilts in Exp. 1 and …

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The Effect Of Dietary Nutrients On Osteochondrosis Lesions And Cartilage Properties In Pigs (2006), N Z. Frantz, G A. Andrews, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Steven S. Dritz Jan 2006

The Effect Of Dietary Nutrients On Osteochondrosis Lesions And Cartilage Properties In Pigs (2006), N Z. Frantz, G A. Andrews, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 80 gilts (PIC 327 × 1050; 86 lb initial BW) were used in an 84-d study to determine the effect of different nutrients on the occurrence of osteochondrosis (OC) lesions, several cartilage criteria, growth performance, and carcass composition. Eight dietary treatments were formulated, consisting of 1) control (standard corn-soy diet, 3.5% choice white grease (CWG)) or the control diet plus 2) fish oil (3.5%) replaced CWG, 3) proline and glycine (Pro/Gly; 300 and 200% of lysine), 4) leucine, isoleucine, and valine (BCAA; 200, 100, and 100% of lysine, respectively), 5) silicon (1,000 ppm), 6) copper and manganese …

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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 …

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Resynchronization Of Ovulation And Conception In Nonpregnant Dairy Cows And Heifers (2006), M.A. Portaluppi, D.E. Tenhouse, Jeffrey S. Stevenson Jan 2006

Resynchronization Of Ovulation And Conception In Nonpregnant Dairy Cows And Heifers (2006), M.A. Portaluppi, D.E. Tenhouse, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Our objectives were to determine various factors influencing upfront single and multiple ovulation in response to GnRH in a timed arti-ficial insemination (TAI) protocol and subse-quent fertility after altering timing of the sec-ond GnRH injection and AI relative to PGF2αinjection. Replacement heifers (n = 86) and 613 lactating cows previously inseminated were diagnosed not pregnant at biweekly in-tervals to form 77 breeding clusters spanning 36 months. At not-pregnant diagnosis (day 0), females received 100 μg of GnRH, and they received 25 mg of PGF2α7 days later. Females in 2 treatments received GnRH 48 hr (G48) after PGF2αinjection and TAI at …

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Effect Of Optaflexx And Days On Feed On Feedlot Performance, Carcass Characteristics, And Skeletal Muscle Gene Expression In Yearling Steers (2006), 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 (2006), 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 …

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Effect Of Implant Strategy And Optaflexx Administration On Feedlot Performance And Skeletal Muscle Β-Adrenergic Receptor And Insulin-Like Growth Factor I Mrna Abundance (2006), 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 (2006), 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 …

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Comparison Of Dectomax And Valbazen On Beef Cattle Carcass Traits (2006), J.A. Christopher, T.T. Marston, J.R. Brethour, Gerald L. Stokka Jan 2006

Comparison Of Dectomax And Valbazen On Beef Cattle Carcass Traits (2006), J.A. Christopher, T.T. Marston, J.R. Brethour, Gerald L. Stokka

Kansas Agricultural Experiment Station Research Reports

The objective of this trial was to determine if types of dewormers affected carcass characteristics. Crossbred steers (n=428) were stratified by weight and ultrasound marbling score and administered either Dectomax (subcutaneous injection) or Valbazen (oral) dewormer. Fecal egg counts indicated that both dewormers cleared internal parasites from the cattle. Carcass data indicated that Dectomax increased fat deposition as measured by 12th rib back fat; kidney, pelvic, and heart fat; and marbling score, when compared with Valbazen. Deworming products may affect carcass traits that are used to value cattle.

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Performance Of Calves Born To Beef Cows Seropositive But Subclinical For Bovine Leukosis Virus (2006), 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 (2006), 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 …

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Comparison Of Cidr To Mga In A 7-11 Cosynch Protocol With Timed Insemination Of Beef Heifers (2006), 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 (2006), 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 …

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