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Life Sciences

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2006

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Articles 31 - 60 of 76

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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 Mixing Pigs Or Maintaining Pen Integrity On The Response To Growing-Finishing Space Allocation (2006), M C. Brumm, L J. Johnston, K Stalder, Ncera-89 Committee On Swine Mangement, Robert D. Goodband Jan 2006

Effect Of Mixing Pigs Or Maintaining Pen Integrity On The Response To Growing-Finishing Space Allocation (2006), M C. Brumm, L J. Johnston, K Stalder, Ncera-89 Committee On Swine Mangement, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

A cooperative study using 906 pigs was conducted to evaluate either mixing pigs or maintaining pen integrity during the move from nursery to finishing, and its effect on finishing space allowance. Treatments were arranged in a 2 × 2 factorial, with main effects of mixing or maintaining pen integrity as pigs were moved to finishing facilities (BW 54.9 lb) and providing either 6.0 or 8.0 ft2 per pig. There were 8 pens per block and 7 blocks. In 2 pens, when moving from nursery to finishing, pen integrity was maintained and pens were allocated either 6.0 or 8.0 ft2 per …

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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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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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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 …

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Comparison Of Particle Size Analysis Of Ground Grain With, Or Without, The Use Of A Flow Agent (2006), W Diederich, Robert D. Goodband, Michael D. Tokach, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz Jan 2006

Comparison Of Particle Size Analysis Of Ground Grain With, Or Without, The Use Of A Flow Agent (2006), W Diederich, Robert D. Goodband, Michael D. Tokach, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

The American Society of Biological and Agricultural Engineers' standard for particle size analysis indicates that the analysis can be conducted with or without the use of a flow agent. Because of this allowed variation in procedures, particle size analysis results can be variable and difficult to interpret, depending on whether the laboratory uses a flow agent or not. Therefore, a retrospective analysis was made of 603 samples of ground corn analyzed for particle size with, or without, 0.5 g of synthetic amorphous precipitated silica (Sipernat® 22-S) per 100 g of sample. Results of both analyses were compared with a Method …

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Effects Of A Liquid (Neolac1) And Dry Feed Combination Fed In Varying Durations On Weanling Pig Performance, R C. Sulabo, C N. Groesbeck, J M. Benz, D Mckilligan, Robert D. Goodband, Michael D. Tokach, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz Jan 2006

Effects Of A Liquid (Neolac1) And Dry Feed Combination Fed In Varying Durations On Weanling Pig Performance, R C. Sulabo, C N. Groesbeck, J M. Benz, D Mckilligan, Robert D. Goodband, Michael D. Tokach, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

One hundred eighty pigs (initially 11.4 lb and 18 days of age) were used in a 28-d growth assay to determine the effects on nursery pig performance of combining a complete liquid feed (Neolac) with dry feed for various durations. Pigs were randomly allotted to experimental treatments consisting of: dry feed only (control) or Neolac provided for a period of 3 and 7 days in combination with dry feed. Overall, pigs fed the liquid-dry feed combination had a greater ADG (P<0.01) than did the dry-fed pigs until d 7 after weaning. Weight gains obtained during this period were not maintained until the end of the nursery period, regardless of the duration of liquid feeding. Both dry matter intake (DMI) and DM feed/gain increased (P<0.01) as a result of liquid feeding. Pigs provided liquid feed for 7 d also had a higher DM feed/gain (P<0.06) than that of the dry-fed controls in all periods. Feeding a liquid complete diet for various durations, in combination with dry feed, only had positive effects on growth rate immediately after weaning, but did not have lasting gains to influence overall nursery performance. Further experiments are needed to determine whether the improvement in initial feed intake with liquid feeding will reduce "starve-outs" and mortality.; Swine Day, 2006, Kansas State University, Manhattan, KS, 2006

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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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An Investigation Into The Mechanisms Of Action Of Revalor-S And Optaflexx In Growing Steers (2006), 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 (2006), 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 …

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

Measuring Scope Efficiency For Crop And Beef Farms (2006), 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 …

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Variation In Performance Of Electronic Cattle Ear Tags And Readers (2006), 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 (2006), 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 …

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

A Novel Method To Dry Age Beef By Using Vacuum Packaging (2006), 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 …

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Color Of Cooked Ground Beef Patties Is Affected By Cooking Rate And Post-Cooking Holding Time (2006), 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 (2006), 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 …

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Comparison Of Corn And Grain Sorghum Dried Distillers Grains As Protein Supplements For Growing Beef Heifers (2006), 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 (2006), 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 …

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Evaluate The Efficacy Of "Heat Stress Audits" Of Your Cooling System Through Core Body Temperature (2006), John F. Smith, M. Vanbaale, C. Jamison, R. Rodriguez Jan 2006

Evaluate The Efficacy Of "Heat Stress Audits" Of Your Cooling System Through Core Body Temperature (2006), John F. Smith, M. Vanbaale, C. Jamison, R. Rodriguez

Kansas Agricultural Experiment Station Research Reports

A project to evaluate the degree of heat stress in individual dairies was carried out in the summer of 2005. The object of this project was to develop a method to evaluate or audit how effective an individual dairy is in manag-ing heat stress. Approximately 45 herds in 20 different states were audited for the degree of heat stress cows experienced during a 72-hr period. Dairies were selected based on geog-raphy, climate, and facility design. Lactating cows 40 to 100 days in milk (DIM) and dry cows within 30 days of calving were evalu-ated. Vaginal temperatures of 8 cows located …

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Influence Of Facilities On Cow Time Budgets (2006), Joseph P. Harner, John F. Smith, Michael J. Brouk Jan 2006

Influence Of Facilities On Cow Time Budgets (2006), Joseph P. Harner, John F. Smith, Michael J. Brouk

Kansas Agricultural Experiment Station Research Reports

A model was developed to evaluate the impact of facilities on cow time budgets. The model suggests that in inadequate facilities overcrowding of the facility by 25% or more resulted because occupancy rate exceeded 100%. The model also is useful in evaluating the impact of time at milking center and milk-ing frequency on cow time budget. In general, the first groups of cows through the milking parlor will have adequate time for resting, feeding, socializing, and watering. The last groups of cows through the parlor, however, do not have adequate time for these activities if the time at the milking …

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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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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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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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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;

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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.

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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 …

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