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Kansas Agricultural Experiment Station Research Reports

1997

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Effects Of Low-Protein, Amino Acid-Fortified Diets, Formulated On A Net Energy Basis, On The Growth Performance And Carcass Characteristics Of Finishing Pigs (1996), J W. Smith Ii, P R. O'Quinn, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen Jan 1997

Effects Of Low-Protein, Amino Acid-Fortified Diets, Formulated On A Net Energy Basis, On The Growth Performance And Carcass Characteristics Of Finishing Pigs (1996), J W. Smith Ii, P R. O'Quinn, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

Two hundred eighty-eight gilts were used to determine the effects of corn-soybean meal or low-protein, amino acid-fortified diets, formulated on a net energy (NE) basis on growth perforn1ance and carcass characteristics. Pigs fed high NE grew faster from 105 to 165 lb. However, pigs fed diets with intact protein grew faster and more efficiently during the finishing period and for the entire trial than those fed low protein, amino acidfortified diets. Carcass data revealed that pigs consuming high NE were fatter and had lower percentage lean than pigs consuming low NE. Additionally, longissimus muscle area tended to be greater in …

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Effects Of Sorghum Genotype And Processing Method On Production Characteristics And Growth Performance Of Nursery Pigs (1997), J R. Froeschner, Z J. Cheng, Joe D. Hancock, Keith C. Behnke Jan 1997

Effects Of Sorghum Genotype And Processing Method On Production Characteristics And Growth Performance Of Nursery Pigs (1997), J R. Froeschner, Z J. Cheng, Joe D. Hancock, Keith C. Behnke

Kansas Agricultural Experiment Station Research Reports

Three sorghum varieties that varied in starch composition were fed to Phase II and Phase III pigs to determine if feeding sorghum high in waxiness provided a benefit. In addition, each variety was fed as a meal, standard pellet, and an expanded pellet. As level of waxiness increased, pellet durability index increased numerically and the amount of fines produced decreased numerically. In addition, thermal processing of the diets increased the feeding value. Sorghum genotype had little effect on pig performance.; Swine Day, Manhattan, KS, November 20, 1997

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Effects Of Source And Level Of Added Chromium On Growth Performance Of Starter Pigs (1997), P R. O'Quinn, R E. Musser, K Q. Owen, S A. Blum, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband Jan 1997

Effects Of Source And Level Of Added Chromium On Growth Performance Of Starter Pigs (1997), P R. O'Quinn, R E. Musser, K Q. Owen, S A. Blum, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

A 35-d growth trial was conducted with conventionally weaned nursery pigs to evaluate the efficacy of supplemental chromium (Cr) as either chromium nieotinate (CrNic) or chromium picolinate (CrPic). Neither source nor level of supplemental Cr had any effect on weanling pig growth performance or immune status. Equal levels of CrNic and CrPic produced similar results, except that pigs fed CrPic had higher serum Cr concentrations than pigs fed CrNic. These data suggest no beneficial responses to supplemental CrNic or CrPic in nursery pig diets.; Swine Day, Manhattan, KS, November 20, 1997

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Pyridoxine, But Not Thiamin, Improves Growth Performance Of Weanling Pigs (1997), J C. Woodworth, R E. Musser, J A. Loughmiller, S A. Moser, G S. Grinstead, P R. O'Quinn, Robert D. Goodband, Jim L. Nelssen, Michael D. Tokach Jan 1997

Pyridoxine, But Not Thiamin, Improves Growth Performance Of Weanling Pigs (1997), J C. Woodworth, R E. Musser, J A. Loughmiller, S A. Moser, G S. Grinstead, P R. O'Quinn, Robert D. Goodband, Jim L. Nelssen, Michael D. Tokach

Kansas Agricultural Experiment Station Research Reports

Two trials were conducted to determine whether pyridoxine or thiamine needs to be added to the diet for weanling pigs. In the first trial, weanling pigs were fed either a control diet or diets containing added thiamin (2.5 or 5.0 g/ton) or pyridoxine (3.5 or 7.0 g/ton). From d 0 to 14 after weaning, pigs fed added pyridoxine had increased ADG and ADFI, with pigs fed 3.5 g/ton of added pyridoxine having the greatest response. Growth performance was not improved by added thiamin. In a second trial, weanling pigs were fed a control diet or diets containing 1, 2, 3, …

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Summary Of Kansas State University Swine Enterprise Record 1997, Michael R. Langemeier, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen Jan 1997

Summary Of Kansas State University Swine Enterprise Record 1997, Michael R. Langemeier, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

The Kansas Swine Enterprise Record Program evaluates biological and economic performance and is part of a cooperative record- keeping project with Extension personnel and swine producers in Kansas. Nebraska, and South Dakota. From January 1 to December 31, 1996, profit per cwt of pork produced by these producers (13 semiannual and 18 annual data) averaged $10.62 for the last 6 months of 1996 and $8.08 for the entire year. Producers in the top one-third in terms of profitability had average profits of $15.11 per cwt, whereas producers in the bottom one-third had average profits of $.73 per cwt for the …

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Field Research 1997, Dale L. Fjell Jan 1997

Field Research 1997, Dale L. Fjell

Kansas Agricultural Experiment Station Research Reports

No abstract provided.

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Development And Use Of Recombinant Gonadotropin-Releasing Hormone Vaccines To Sterilize Cattle: A Review (1997), J. Greer, Timothy G. Rozell Jan 1997

Development And Use Of Recombinant Gonadotropin-Releasing Hormone Vaccines To Sterilize Cattle: A Review (1997), J. Greer, Timothy G. Rozell

Kansas Agricultural Experiment Station Research Reports

A possible alternative to conventional castration methods is the use of vaccines that can be injected in order to sterilize animals. One promising approach involves the use of a vaccine that causes cattle to produce an immune response against one of their own reproductive hormones, gonadotropin releasing hormone (GnRH). Immunization against GnRH results in a decrease in the amount of GnRH circulating within the animal's blood. Therefore, follicle stimulating hormone (FSH) and luteinizing hormone (LH) are not stimulated to be released, and, subsequently their levels required for reproductive function. Experimentation has shown that immunization against GnRH can effectively block reproductive …

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Various Estrus-Synchronization Programs For Heifers (1997), Jeffrey S. Stevenson Jan 1997

Various Estrus-Synchronization Programs For Heifers (1997), Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Various programs of estrus synchronization have been tested during the last 6 years to determine the least costly and most efficacious for dairy heifer replacements. Four systems were tested: 1) a modified Ovsynch treatment (GnRH 7 days before PGF2 α followed by GnRH either at 24, 30, 33, 40, or 48 hr, with one fixed-time insemination 16 to 20 hr later); 2) a similar protocol that used GnRH 7 days before PGF 2α followed by insemination at estrus (GnRH + PGF 2α); 3) inseminations after one or two injections of PGF 2α given 14 days apart (PGF2α; heifers not detected …

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High Carbon Dioxide, Modified-Atmosphere Packaging (Map) For Beef Steaks (1997), S.E. Luchsinger, Melvin C. Hunt, Donald H. Kropf Jan 1997

High Carbon Dioxide, Modified-Atmosphere Packaging (Map) For Beef Steaks (1997), S.E. Luchsinger, Melvin C. Hunt, Donald H. Kropf

Kansas Agricultural Experiment Station Research Reports

To determine the effects of storage in a high-carbon dioxide, modified-atmosphere package (MAP) on shelf life, beef strip steaks were packaged under 30% CO2-70% N2 and stored for up to 42 days at 30 or 38 ÌŠF. Aerobic plate counts (APC) and lactic acid bacteria (LAB) counts in these ExtendPak™ packages were well below the threshold of spoilage even after 42 days of MAP storage. After 28 days of storage, steaks stored in vacuum packages had APC counts 1.0 log 10 greater than steaks in MAP. APCs increased during a 5-day display period in steaks store d in vacuum packages, …

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Atp Bioluminescence Can Evaluate Cleaning And Sanitizing Effectiveness In The Milking Parlor (1997), M. J. Meyer, Karen A. Schmidt Jan 1997

Atp Bioluminescence Can Evaluate Cleaning And Sanitizing Effectiveness In The Milking Parlor (1997), M. J. Meyer, Karen A. Schmidt

Kansas Agricultural Experiment Station Research Reports

Four areas of the milking parlor were evaluated for effective cleaning and sanitation using total aerobic counts (standard plate count) and ATP bioluminescence (ATPB) techniques. Whereas the plate counts only monitor bacterial numbers, the ATPB results (reported as relative light units, RLU) also indicate residual soil or food residue on the surface. Results showed little correlation between the RLU values and the aerobic plate count data; however, the ATP bioluminescence system is a fast (<2>min) and simple method that evaluates the effectiveness of cleaning and sanitation procedures employed.; Dairy Day, 1997, Kansas State University, Manhattan, KS, 1997;

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Effects Of Additional L-Carnitine During Lactation On Sow And Litter Performance Of First Parity Gilts (1997), R E. Musser, C A. Civis, S A. Blum, K Q. Owen, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen Jan 1997

Effects Of Additional L-Carnitine During Lactation On Sow And Litter Performance Of First Parity Gilts (1997), R E. Musser, C A. Civis, S A. Blum, K Q. Owen, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

A total of 107 first parity gilts was used to determine the effects of 50 ppm of added L-carnitine during lactation on sow and litter performance. At farrowing, gilts were fed a milo-soybean meal diet with or without 50 ppm of added L-carnitine. No differences were observed in litter weaning weight or weight gain or changes in sow weight and last rib fat depth during lactation. Although sows fed additional L-carnitine had lower average daily feed intake the first week of lactation, no differences were observed during the second week or in overall average daily feed intake. These results suggest …

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Lagoon Seepage Through Soil Liners (1997), James P. Murphy, Joseph P. Harner Jan 1997

Lagoon Seepage Through Soil Liners (1997), James P. Murphy, Joseph P. Harner

Kansas Agricultural Experiment Station Research Reports

Most compacted soils can be used for lagoon liners to achieve seepage guidelines established by the Kansas Department of Health and Environment.; Swine Day, Manhattan, KS, November 20, 1997

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Biosecurity In The Dairy (1997), Gerald L. Stokka, Thomas R. Falkner, Patrick Bierman Jan 1997

Biosecurity In The Dairy (1997), Gerald L. Stokka, Thomas R. Falkner, Patrick Bierman

Kansas Agricultural Experiment Station Research Reports

Three strategies exist to control unwanted disease in a livestock operation: 1) prevent the douintroduction of infected cattle, 2) raise the overall level of resistance and specific resistance to infectious disease, and 3) minimize herd exposure to infectious disease. In addition, if unwanted disease exists in the herd, then a plan to eliminate the disease should be implemented. Maintenance of closed herds, testing procedures, vaccination schedules, sanitation, and good husbandry practices are integral parts of biosecurity procedures. The procedures in place should produce a benefit in terms of both economics and public perception that the quality and safety of our …

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Economics Of Sealing Horizontal Silos (1997), G.L. Huck, J.E. Turner, M.K. Siefers, B.E. Brent, K.K. Bolsen, Matthew A. Young, Ronald V. Pope Jan 1997

Economics Of Sealing Horizontal Silos (1997), G.L. Huck, J.E. Turner, M.K. Siefers, B.E. Brent, K.K. Bolsen, Matthew A. Young, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Determining the value of silage saved by effectively sealing a horizontal silo requires only a few simple calculations, but it is still a concept that is often overlooked by many livestock producers who store large amounts of silage in that manner. Kansas produces about 3.0 million tons of silage annually, primarily from corn and sorghum. A majority of this silage is made and stored in either bunker, trench, or "drive-over" pile silos . Only 20 to 30% of these silos are sealed after filling. Producers who do not seal need to take a second look at the economics of this …

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Milking Twice Daily In The Presence Of A Cow’S Own Calf Fails To Prolong Postpartum Anestrus (1997), G.C. Lamb, J.M. Lynch, B.L. Miller, David M. Grieger, Jeffrey S. Stevenson Jan 1997

Milking Twice Daily In The Presence Of A Cow’S Own Calf Fails To Prolong Postpartum Anestrus (1997), G.C. Lamb, J.M. Lynch, B.L. Miller, David M. Grieger, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Six treatment s were initiated approximately 15 days after calving: 1) calf was weaned permanently from its dam (calf weaned; CW); 2) calf was present continuously with its dam but contact with the udder was prohibited (calf restricted; CR); 3) calf was present continuously with its dam (calf present; CP); 4) CR dam was suckled twice daily by her own calf (CR+S2x); 5) CW dam was milked twice daily (CW+M2x); 6) CR dam was milked twice daily (CR+ M2x). During the 4-week treatment period , cows in the CR+M2x treatment had twofold greater yield milk and milk components than CW+M2x …

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Failure Of Precalving Supplementation Of Vitamin E And Dietary Fat To Alter Reproductive Performance Of First Lactation Cows Or The Health Of Their Calves (1997), J.L. Coalson, L.R. Corah, Gerald L. Stokka, Frank Blecha Jan 1997

Failure Of Precalving Supplementation Of Vitamin E And Dietary Fat To Alter Reproductive Performance Of First Lactation Cows Or The Health Of Their Calves (1997), J.L. Coalson, L.R. Corah, Gerald L. Stokka, Frank Blecha

Kansas Agricultural Experiment Station Research Reports

A study was conducted to determine the effect of precalving supplementation with vitamin E and fat on the reproductive performance of first lactation cows and the health of their calves. Approximately 50 days before the first expected calving, 48 crossbred heifers were allotted to four treatments: 1) basal diet that consisted of 13 lb of prairie hay, 7.3 lb of milo, and 1 lb of supplement per heifer per day; 2) basal diet+supplement bringing the diet to 4% fat; 3) basal diet+supplement providing 1000 IU supplemental vitamin E/day; and 4) basal diet plus both fat and vitamin E. Supplementation of …

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Steam Pasteurization To Reduce Bacterial Populations On Commercially Slaughtered Beef Carcasses (1997), D.E. Schafer, Curtis L. Kastner, Randall K. Phebus, Abbey L. Nutsch Jan 1997

Steam Pasteurization To Reduce Bacterial Populations On Commercially Slaughtered Beef Carcasses (1997), D.E. Schafer, Curtis L. Kastner, Randall K. Phebus, Abbey L. Nutsch

Kansas Agricultural Experiment Station Research Reports

A steam pasteurization system (SPS) has been shown in laboratory and commercial evaluations to effectively reduce bacterial populations on freshly slaughtered beef. Our study evaluate d the bactericidal uniformity of SPS. Samples were collected from the five anatomical locations, one per carcass, 40 samples per location , so that 200 carcasses were evaluated before and 200 after pasteurization. Each carcass was sampled by wiping a 300 c m2 area of the specified location with a moist, sterile sponge. For all locations, the total aerobic plate count (APC) after pasteurization was lower (P#.01). Before pasteurization, the midline was contaminate d most …

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Use Of Video Image Analysis, Ribeye Grids, And Linear Ribeye Measurements To Predict And Compare Ribeye Areas From Carcass Left And Right Sides (1997), A.T. Waylan, R.E. Campbell, John A. Unruh Jan 1997

Use Of Video Image Analysis, Ribeye Grids, And Linear Ribeye Measurements To Predict And Compare Ribeye Areas From Carcass Left And Right Sides (1997), A.T. Waylan, R.E. Campbell, John A. Unruh

Kansas Agricultural Experiment Station Research Reports

Ribeye tracings from 265 beef carcasses were used to compare ribeye areas from right and left sides. When video image analysis (VIA) was used to determine ribeye area, no difference (P=.48) was observed between right and left sides. However, when ribeye area was determine d by using USDA grids, those on the left side were slightly larger (P<.01) than those on right side. This difference is negligible considering the wide rang e in variation (SD=.68 in2) between right and left side ribeye areas. Ribeye area correlations between VIA and grid result s were high for both right (.96) and left (.95) sides. Linear measures (length, midwidth, and widest width) of ribeyes predicted ribeye area with reasonable accuracy ( R2=.90 and .91). These methods provide several options to determine ribeye area. However, data collectors need to realize that the difference between right and left side ribeye areas may be a greater variable than the sensitivity of the method used.

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Economic Impact Of Preweaning Vaccinations On Health And Performance Of Weaned Feeder Cattle (1997), J.M. Lynch, P.L. Houghton, L.R. Corah, Gerald L. Stokka Jan 1997

Economic Impact Of Preweaning Vaccinations On Health And Performance Of Weaned Feeder Cattle (1997), J.M. Lynch, P.L. Houghton, L.R. Corah, Gerald L. Stokka

Kansas Agricultural Experiment Station Research Reports

In October, 1995, 3,565 head of freshly weaned, British-breed calves were received into a weaning facility in southwest Nebraska. Calves were determined to be preconditioned if they had received both viral an d Pasteurella vaccines prior to weaning (PREWEAN; n = 2,315), and all other calves were considered to have no preconditioning (CRTL; n = 1,250). Cattle were processed within 24 hours of arrival, and booster vaccinations were given when appropriate. Average days on feed at the weaning facility were similar between PREWEAN and CTRL calves (52.4 and 50.3 days, respectively), but average daily gain (2.24 vs 1.87 kb) and …

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The Effect Of Vitamin E, Selenium, And Copper Supplementation Preweaning On The Performance And Immune Response Of Beef Calves (1997), C.L. Wright, L.R. Corah, Gerald L. Stokka, Frank Blecha, G. Lynch Jan 1997

The Effect Of Vitamin E, Selenium, And Copper Supplementation Preweaning On The Performance And Immune Response Of Beef Calves (1997), C.L. Wright, L.R. Corah, Gerald L. Stokka, Frank Blecha, G. Lynch

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to determine the effect of vitamin E, selenium, and copper supplementation on the pre- and postweaning performance, immune responses, and serum metabolites o f crossbred beef calves. In experiment 1, 71 calves were blocked by weight and allotted to one of four individually fed treatments: 1) control supplement (2 lb grain creep ) (CS), 2) CS + .27 mg selenium + 500 IU vitamin E, 3) CS + 9.1 mg copper, and 4) combination of treatments 2 and 3. In experiment 2, 80 crossbred beef calves were blocked by weight and allotted to 5 individually fed …

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Summary Of Grazing Research On Kansas Crp Land (1997), Michael R. Langemeier, P.D. Ohlenbusch, R.D. Jones Jan 1997

Summary Of Grazing Research On Kansas Crp Land (1997), Michael R. Langemeier, P.D. Ohlenbusch, R.D. Jones

Kansas Agricultural Experiment Station Research Reports

Animal performance and n et return per acre were examined for four CRP research sites in Kansas in 1 994, 1995, and 1996. Both mowing and prescribed burning increased animal performance in 1994. Mowing was economically feasible on one of the four sites. Prescribed burning was economically feasible on three of four sites. Mowing and burning treatments were not repeated i n 1995 or 1996. Net returns per acre for the site that was grazed with cowcalf pairs ranged from -$8.55 to -$25.54. For the sites grazed with stockers, net returns per acre varied from -$18.67 to $31 .39. Net …

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Effect Of Revalor-G On The Performance Of Stocker Heifers Grazing Irrigated, Smooth Bromegrass Pasture For A Full Season (1997), Gerry L. Kuhl, M.D. Reynolds, Robert T. Brandt Jr., Dale A. Blasi Jan 1997

Effect Of Revalor-G On The Performance Of Stocker Heifers Grazing Irrigated, Smooth Bromegrass Pasture For A Full Season (1997), Gerry L. Kuhl, M.D. Reynolds, Robert T. Brandt Jr., Dale A. Blasi

Kansas Agricultural Experiment Station Research Reports

A 150-day field study was conducted to evaluate single vs. reimplant strategies for stocker heifers grazing irrigated smooth bromegrass . Three hundred forty-three previously nonimplanted British crossbred heifers averaging 494 lb were assigned to one of seven treatments: 1) no implant-control (NC), 2) Revalor-G® (REVG), 3) Ralgro® (RAL), 4) Synovex-H® (SYNH), 5) REVG/REVG, 6) RAL/RAL, and 7) SYNH/SYNH. Reimplanting (Treatments 5, 6 , and 7) was done on day 75 of the trial. In the first 75 days, all implants increased (P<.05) average daily gain (ADG) compared to NC. For the last 75 days (days 75 through 150), heifers implanted with REVG, REVG/REVG, RAL/RAL, and SYNH gained faster (P<.05) than NC or those implanted with RAL, and SYNH/SYNH. No significant differences occur red among the latter three treatments. Over the entire trial, there was no advantage to reimplanting heifers with REVG or RAL. SYNH/ SYNH heifers gained less (P<.05) than their single -implanted counterparts.

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Effects Of Various Supplemental Starch And Protein Levels On Ruminal Fermentation And Liquid Passage Of Beef Steers Fed Tallgrass-Prairie Hay (1997), R.C. Cochran, E.S. Vanzant, K. C. Olson, Timothy J. Jones, Evan C. Titgemeyer Jan 1997

Effects Of Various Supplemental Starch And Protein Levels On Ruminal Fermentation And Liquid Passage Of Beef Steers Fed Tallgrass-Prairie Hay (1997), R.C. Cochran, E.S. Vanzant, K. C. Olson, Timothy J. Jones, Evan C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

The effect of supplements containing various proportions of degradable intake protein (DIP) and starch on ruminal digestion characteristics of forage-fed beef steers was evaluated. Fluid passage rates, ruminal ammonia (N H), 3 and total volatile fatty acid (VFA) concentrations increased as the amount of supplemental DIP increased. Starch infused at .3% of BW increased molar proportion s of propionate and butyrate and decreased acetate, compared to feeding DIP alone. However, proportions of branched-chain VFA increased with DIP at all levels of starch infusion. Total digestible organic matter intake (TDOMI) was increased with each addition of DIP; however, infusing starch within …

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Effect Of Supplement Strategy On Intake And Digestion Of Prairie Hay By Beef Steers (1997), R.H. Greenwood, C.A. Loest, Evan C. Titgemeyer, James S. Drouillard Jan 1997

Effect Of Supplement Strategy On Intake And Digestion Of Prairie Hay By Beef Steers (1997), R.H. Greenwood, C.A. Loest, Evan C. Titgemeyer, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

The effects of supple mental corn (4 lb/day), rumen-protected methionine (4.25 grams DL-methionine per day), or a cooked molasses block (1 lb/day) on intake and digestion of prairie hay were measured i n beef steers. Steers that consumed the cooked molasses block ate more forage than control steers, whereas forage intake was decreased by supplemental corn. Total tract organic matter digestion, expressed as a percent of intake, was numerically greatest for steers consuming the cooked molasses block. Digestible organic matter intake, a rough estimate of energy available to the steers, was unaffected by methionine but was increased by supplementation of …

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Evaluation Of The Effects Of Carbohydrate Source And Level Of Degradable Intake Protein On The Intake And Digestion Of Tallgrass-Prairie Hay By Beef Steers (1997), J.S. Heldt, R.C. Cochran, C.P. Mathis, B.C. Woods, Gerald L. Stokka, K. C. Olson, Evan C. Titgemeyer, Tiruvoor G. Nagaraja Jan 1997

Evaluation Of The Effects Of Carbohydrate Source And Level Of Degradable Intake Protein On The Intake And Digestion Of Tallgrass-Prairie Hay By Beef Steers (1997), J.S. Heldt, R.C. Cochran, C.P. Mathis, B.C. Woods, Gerald L. Stokka, K. C. Olson, Evan C. Titgemeyer, Tiruvoor G. Nagaraja

Kansas Agricultural Experiment Station Research Reports

Thirteen ruminally fistulated steers were used to determine the effect of carbohydrate (CHO) source and degradable intake protein (DIP) on intake and digestion of tallgrass-prairie hay. In general, DIP supplementation had positive effects on intake and digestion, although response varied somewhat with CHO source. Increasing the amount of supplemental CHO generally decreased hay intake, but effects on digestion were dependent on CHO source.

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The Effects Of Supplementation Frequency And Amount Of Urea In Dry Supplements On Intake And Digestibility Of Low-Quality Tallgrass-Prairie Forage By Beef Steers (1997), B.C. Woods, R.C. Cochran, C.P. Mathis, J.S. Heldt, Gerald L. Stokka, K. C. Olson, Evan C. Titgemeyer Jan 1997

The Effects Of Supplementation Frequency And Amount Of Urea In Dry Supplements On Intake And Digestibility Of Low-Quality Tallgrass-Prairie Forage By Beef Steers (1997), B.C. Woods, R.C. Cochran, C.P. Mathis, J.S. Heldt, Gerald L. Stokka, K. C. Olson, Evan C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Sixteen ruminally fistulated steers were used to evaluate the effects of altering supplementation frequency and including urea in dry supplements on forage intake and digestion. Intake of low-quality tallgrass-prairie hay was not affected by supplementation frequency or by the inclusion of urea. Supplementing cattle less frequently resulted in a decrease in diet digestion. However, we observed a slight trend for reduced supplementation frequency to exert a greater impact when cattle were fed supplements that contained urea.

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Effect Of Urea Level In Protein Supplements On Performance By Beef Cows Consuming Low-Quality, Tallgrass-Prairie Forage (1997), B.C. Woods, R.C. Cochran, C.P. Mathis, J.S. Heldt, K. C. Olson, Evan C. Titgemeyer, David M. Grieger Jan 1997

Effect Of Urea Level In Protein Supplements On Performance By Beef Cows Consuming Low-Quality, Tallgrass-Prairie Forage (1997), B.C. Woods, R.C. Cochran, C.P. Mathis, J.S. Heldt, K. C. Olson, Evan C. Titgemeyer, David M. Grieger

Kansas Agricultural Experiment Station Research Reports

One hundred thirty two Hereford x Angus cows grazing tallgrass-prairie range during winter were used to evaluate the effects of varying the amount of supplemental degradable intake protein (DIP) derived from urea on cow and calf performance. Treatment groups were: 0, 15, 30, and 45% of the supplemental DIP from urea. Supplements were formulated to contain 30% crude protein (CP), with approximately 70% of the CP being DIP. Palatability was not a significant problem within the range of urea inclusion tested. In general, prepartum weight and condition losses were greater with increasing levels of urea, although the magnitude of condition …

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Effect Of Bacterial Inoculants On The Fermentation And Preservation Efficiencies And Nutritive Value Of Alfalfa Silage For Growing Steers (1997), K.K. Bolsen, G.L. Huck, M.K. Siefers, J.E. Turner, S.A. Anderson, J.S. Pendergraft, Matthew A. Young, Ronald V. Pope Jan 1997

Effect Of Bacterial Inoculants On The Fermentation And Preservation Efficiencies And Nutritive Value Of Alfalfa Silage For Growing Steers (1997), K.K. Bolsen, G.L. Huck, M.K. Siefers, J.E. Turner, S.A. Anderson, J.S. Pendergraft, Matthew A. Young, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Two silage bacterial inoculants from Pioneer Hi-Bred International, Inc. were evaluated using second-cutting alfalfa. The Pioneer brand 1174® inoculant and a Pioneer experimental inoculant each increased the rate and efficiency of the ensiling process in both farm-scale and laboratory-scale silos. The two inoculants increase d the DM recovery in the farm-scale silos compared to the untreated silage. Steers fed the experimental inoculant-treated silage gained faster (P<. 10) (2.56 vs. 2.37 lb per day), had a 4.0% higher DM intake, and were 4.3% more efficient than steers fed the untreated silage. The 1174-treated silage supported a numerically but not statistically better steer performance than the control silage. When the DM recovery results were combined with the feed per gain results, the silages with 1174 and experimental inoculant produced 5.3 and 10.5 lb more steer gain per ton of crop ensiled, respectively, than the control silage.

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Explaining Differences In Efficiency Among Dairy Operations (1997), P. T. Berends, Michael R. Langemeier, Allen M. Featherstone Jan 1997

Explaining Differences In Efficiency Among Dairy Operations (1997), P. T. Berends, Michael R. Langemeier, Allen M. Featherstone

Kansas Agricultural Experiment Station Research Reports

To remain competitive, dairy operatoins need to continue to improve production efficiency and manage costs. Kansas Farm Management Association data from 1991 to 1995 were used to measure technical, economic, and overall efficiencies for 50 dairy operations in Kansas. On average, the farms showed .87 technical, .71 economic, and .67 overall efficiency. The latter was related negatively to labor, capital, feed, and fuel and utility expenses per cow. Veterinarian expenses were related positively to overall efficiency. Overall efficiency was the most sensitive to changes in feed expenses per cow, emphasizing the importance of controlling this cost. Results also indicated that …

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Conception And Pregnancy Rates In Dairy Cows After Various Programmed Breeding Systems (1997), Jeffrey S. Stevenson, K. E. Thompson, Y. Kobayashi Jan 1997

Conception And Pregnancy Rates In Dairy Cows After Various Programmed Breeding Systems (1997), Jeffrey S. Stevenson, K. E. Thompson, Y. Kobayashi

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to measure conception and pregnancy rates in lactating dairy cows after various treatments followed by artificial insemination (AI) after detected estrus or at one fixed time. In Experiment 1, Holstein cows in one herd were assigned randomly to four treatments every 3 wk (27, 3-wk cluster groups): 1)Ovsynch33, 2) GnRH+PGF2α, 3) 2xPGF2α, and 4) 2xPGF2α+GnRH. In Experiment 2, Holstein cows in one herd were assigned randomly to two treatments every 3 wk (14, 3-wk cluster groups): 1) Ovsynch48 and 2) GnRH+PGF2α. In both experiments, frozen-thawed semen from multiple sires was used, one technician performed>95% of …

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