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Full-Text Articles in Life Sciences
Alternatives To Cash Prices In Fed-Cattle Price Discovery, J. Mintert, Ted C. Schroeder
Alternatives To Cash Prices In Fed-Cattle Price Discovery, J. Mintert, Ted C. Schroeder
Kansas Agricultural Experiment Station Research Reports
Price discovery in fed cattle markets is a significant concern as cash market volume declines and trade becomes more sporadic. Producers need to consider other sources of pricing information when negotiating cash trade and long-term marketing agreements. This study evaluated several alternative price sources for producers to consider. Live cattle futures and wholesale boxed-beef prices offer the most promise; however, both also have limitations associated with their use.
Effects Of Stage Of Maturity At Harvest And Kernel Processing On The Nutrient Digestibility Of Corn Silage, T.J. Wistuba, L.A. Whitlock, M.K. Siefers, K.K. Bolsen, Ronald V. Pope
Effects Of Stage Of Maturity At Harvest And Kernel Processing On The Nutrient Digestibility Of Corn Silage, T.J. Wistuba, L.A. Whitlock, M.K. Siefers, K.K. Bolsen, Ronald V. Pope
Kansas Agricultural Experiment Station Research Reports
Twelve ruminally cannulated crossbred steers were used to evaluate the effects of stage of maturity and kernel processing (rolling) of whole-plant corn silage on nutrient digestibilities. The six silage rations were: 50% milkline, 80% milkline, and 7 days after-black layer (7BL) each ensiled processed (rolled) or unprocessed. Steers consuming the 80% milkline and 7BL processed rations had numerically higher DM and OM digestibilities, and all processed rations had numerically higher starch digestibilities. However, the three processed rations had numerically lower fiber digestibilities (NDF and/or ADF). Steers consuming the 80% milkline rations had numerically higher nutrient digestibilities than those fed the …
Translocation Of Natural Microflora From Muscle Surface To Interior By Blade Tenderization, M.N. Hajmeer, E. Ceylan, James L. Marsden, Randall K. Phebus
Translocation Of Natural Microflora From Muscle Surface To Interior By Blade Tenderization, M.N. Hajmeer, E. Ceylan, James L. Marsden, Randall K. Phebus
Kansas Agricultural Experiment Station Research Reports
The effect of blade tenderization on translocation of natural microflora from the surface to the interior of longissimus dorsi steaks aged for 7, 14, and 21 days was evaluated. Samples from the exterior and interior of steaks from blade-tenderized (BT) and non-blade-tenderized (N-BT) strip loins were analyzed for aerobic plate, coliform, and Escherichia coli counts. Results showed that BT translocated microorganisms (aerobic plate counts) from the exterior to the interior of muscle. Microorganism numbers increased with extended storage (P<.05). Counts of coliforms and Escherichia coli recovered from BT steaks were comparable to those from N-BT steaks because of very low exterior counts, showing the importance of good hygiene.
Effects Of Grazing System On Performance Of Cow-Calf Pairs Grazing Bermudagrass Pastures Interseeded With Wheat And Legumes, Lyle W. Lomas, Joseph L. Moyer, K.P. Coffey, George A. Milliken
Effects Of Grazing System On Performance Of Cow-Calf Pairs Grazing Bermudagrass Pastures Interseeded With Wheat And Legumes, Lyle W. Lomas, Joseph L. Moyer, K.P. Coffey, George A. Milliken
Kansas Agricultural Experiment Station Research Reports
A total of 96 fall-calving cows and 64 calves grazed bermudagrass interseeded with wheat and legumes during 1996, 1997, and 1998 in either a continuous or rotational system stocked at equal rates. Legume cover, available forage dry matter, residual hay production, gains of cows and calves grazing wheat interseeded into bermudagrass, and gains of cows grazing bermudagrass interseeded with legumes were measured. Grazing system had no effect on legume cover, available forage dry matter, gains of cows and calves (wheat phase), and gains of cows (legume phase); however, rotationally grazed pastures produced more residual hay than those grazed continuously.
Effects Of Late-Summer Protein Supplementation On Stocker Cattle Performance, Feedlot Gain, And Carcass Traits, T.T. Marston, D.O. Yauk, L.E. Wankel, J.F. Gleghorn
Effects Of Late-Summer Protein Supplementation On Stocker Cattle Performance, Feedlot Gain, And Carcass Traits, T.T. Marston, D.O. Yauk, L.E. Wankel, J.F. Gleghorn
Kansas Agricultural Experiment Station Research Reports
A 2-year trial was conducted to study the effects of feeding an Arsoy™-based, 32% crude protein supplement to stocker cattle grazing late-summer native pastures. During about 90 days of late-summer/fall grazing, the steers efficiently converted the Arsoy supplement (5.3:1, as fed basis) into significantly greater weight gains (55 lb) relative to nonsupplemented contemporaries. Both groups of steers then were finished and slaughtered in commercial facilities to determine if the supplementation program had any carryover effects. Late-summer supplementation did not influence steers' feedlot gain or carcass traits including ribeye area, fat thickness, and quality grade. However, average hot carcass weight and …
Drylot Receiving Program Vs Pasture Conditioning With Micotil® Metaphylaxis For Grazing Stocker Calves, S.I. Paisley, Thomas R. Falkner, F.K. Brazle, Gerald L. Stokka
Drylot Receiving Program Vs Pasture Conditioning With Micotil® Metaphylaxis For Grazing Stocker Calves, S.I. Paisley, Thomas R. Falkner, F.K. Brazle, Gerald L. Stokka
Kansas Agricultural Experiment Station Research Reports
Three stocker cattle field studies were conducted comparing a traditional 4- to 5-week drylot receiving program with injectable antibiotics administered on a pull-and-treat basis versus a pasture-based conditioning program using an initial metaphylaxis with Micotil® followed by immediately placing cattle on grass. Although daily gains were similar (P=.80) for both receiving programs during the first 28 days, pasture conditioning reduced the number of cattle treated and increased (P<.01) daily gains during the subsequent grazing phase.
Effects Of A Clostridial Bacterin-Toxoid Administered Subcutaneously At The Base Of The Ear On Stocker Heifer Performance, Testosterone Serum Concentrations, And Infrared Thermal Characteristics Of The Injection Site And Adjacent Tissues, J.M. Sargeant, M.F. Spire, S.I. Paisley, J. Ernest Minton, Dale A. Blasi
Effects Of A Clostridial Bacterin-Toxoid Administered Subcutaneously At The Base Of The Ear On Stocker Heifer Performance, Testosterone Serum Concentrations, And Infrared Thermal Characteristics Of The Injection Site And Adjacent Tissues, J.M. Sargeant, M.F. Spire, S.I. Paisley, J. Ernest Minton, Dale A. Blasi
Kansas Agricultural Experiment Station Research Reports
A 129-day field study was conducted to evaluate the effects of a clostridial bacterintoxoid administered subcutaneously at the base of the ear on heifer calf performance, surfaceear temperature, and testosterone concentration. Two hundred previously non-implanted heifers averaging 372 lb were assigned to one of four treatments: 1) α-7 (clostridial toxoid) in left neck, Synovex-H in left ear (NL); 2) α-7 in left neck, Synovex-H in right ear (NR); 3) α-7 in right ear, Synovex-H in opposite ear (OP); and 4) α-7 in right ear, Synovex-H in same ear (SM). On day 7, the right ear of each heifer was thermographically …
Differences In Serum Immunoglobulin G1 And Total Protein Concentrations In Neonatal Calves On Days 1, 5, And 10, L.E. Wankel, T.T. Marston, Gerald L. Stokka, Timothy G. Rozell
Differences In Serum Immunoglobulin G1 And Total Protein Concentrations In Neonatal Calves On Days 1, 5, And 10, L.E. Wankel, T.T. Marston, Gerald L. Stokka, Timothy G. Rozell
Kansas Agricultural Experiment Station Research Reports
Immunoglobulin G1 (IgG1) serum concentrations are used to evaluate passive transfer of immunity in neonatal calves. Total serum proteins also can be measured to evaluate calf health. If IgG1 and total serum protein concentrations change with age, it becomes imperative to compare samples only from a narrow time period. Otherwise, differences might be due to age and not immune status. To help define this time period, blood was drawn from 10 beef calves when they were 1, 5, and 10 days of age. Serum samples were analyzed for IgG1 and total protein concentrations. Total protein concentrations decreased from days 1 …
Thiamin And Riboflavin Retention In Ground Beef Patties Pasteurized By Electron Beam, K.A. Hachmeister, Donald H. Kropf, V.S. Gill, Melvin C. Hunt, R.J. Kaye, James L. Marsden, Curtis L. Kastner
Thiamin And Riboflavin Retention In Ground Beef Patties Pasteurized By Electron Beam, K.A. Hachmeister, Donald H. Kropf, V.S. Gill, Melvin C. Hunt, R.J. Kaye, James L. Marsden, Curtis L. Kastner
Kansas Agricultural Experiment Station Research Reports
This research focused on the effects of an electron beam irradiation treatment with the Repetitive High Energy Pulsed Power (PHEPP) accelerator at Sandia National Laboratories. Test variables included irradiation/storage temperatures (30 or 0°F), packaging environments (aerobic or nitrogen-flushed), and irradiation dose (0, 1.5, or 3.0 kGy). Ground beef patties formulated to a target fat level of 20% were packaged in barrier film under nitrogen (ca = 400 ppm residual oxygen) or sealed in aerobic packages (no vacuum), stored, and irradiated chilled or frozen. Thiamin and riboflavin levels were not affected (P>.05) by irradiation dose. Thiamin content of irradiated patties …
Effects Of Postmortem Aging Period And Blade Tenderization On Sensory Traits Of Beef Steaks, C.D. George-Evins, John A. Unruh, James L. Marsden, Curtis L. Kastner
Effects Of Postmortem Aging Period And Blade Tenderization On Sensory Traits Of Beef Steaks, C.D. George-Evins, John A. Unruh, James L. Marsden, Curtis L. Kastner
Kansas Agricultural Experiment Station Research Reports
We used 54 strip loins, 54 top sirloin butts, and 54 inside rounds, all USDA Choice grade, to determine the influence of different postmortem aging periods and blade tenderization passes on sensory panel traits. Cuts were aged for 7, 14, or 21 days and not tenderized (0X) or blade tenderized one (1X) or two (2X) times. All steaks were cooked to 160°F internally, and samples were evaluated by a trained sensory panel for flavor intensity, juiciness, myofibrillar tenderness, connective tissue amount, and overall tenderness. Both longer aging periods and blade tenderization passes improved tenderness of strip loin and top sirloin …
Effects Of Quality Grade, Aging Period, Blade Tenderization, And Degree Of Doneness On Tenderness Of Strip Loin, C.D. George-Evins, John A. Unruh, James L. Marsden, Curtis L. Kastner
Effects Of Quality Grade, Aging Period, Blade Tenderization, And Degree Of Doneness On Tenderness Of Strip Loin, C.D. George-Evins, John A. Unruh, James L. Marsden, Curtis L. Kastner
Kansas Agricultural Experiment Station Research Reports
We used 162 strip loins to determine the influence of different quality grades, aging periods, blade tenderization passes, and degree of doneness on thawing and cooking loss and Warner-Bratzler shear force (WBS, tenderness). Select (SEL), Choice (CHO), and Certified Angus Beef™ (CAB) strip loins were aged for 7, 14, or 21 days and not tenderized (0X) or blade tenderized one (1X) or two (2X) times. Steaks from each strip loin were assigned randomly to final endpoint cooking temperatures of 150, 160, and 170°F. For steaks aged 7 days, all quality grade and blade tenderization treatments had similar (P>.05) WBS. …
Use Of Gnrh To Increase The Precision Of Estrus And Augment Timed Insemination In Heifers Treated With Melengesterol Acetate And Pgf2, B. Broweleit, J.E. Huston, D.E. Grum, M.L. Day, Sandra K. Johnson
Use Of Gnrh To Increase The Precision Of Estrus And Augment Timed Insemination In Heifers Treated With Melengesterol Acetate And Pgf2, B. Broweleit, J.E. Huston, D.E. Grum, M.L. Day, Sandra K. Johnson
Kansas Agricultural Experiment Station Research Reports
We examined the potential of adding gonadotropin-releasing hormone (GnRH) to a synchrony system based on melengestrol acetate-prostaglandin F2a (MGA-PGF2a) to increase the precision of synchronized estrus and augment timed artificial insemination (AI). Yearling heifers were fed MGA daily for 14 days. Nineteen days after the last feeding of MGA, all heifers were given PGF2a (day 0). Heifers receiving no further treatment served as the untreated controls. In the second treatment, heifers also received an injection of GnRH on day –7. Both groups of heifers were artificially inseminated 12 hours after detected estrus. Heifers in the third treatment received GnRH on …
Refractive Index: A Rapid Method For Determination Of Starch Availability In Grains, J.J. Sindt, Sean P. Montgomery, T.B. Farran, James S. Drouillard
Refractive Index: A Rapid Method For Determination Of Starch Availability In Grains, J.J. Sindt, Sean P. Montgomery, T.B. Farran, James S. Drouillard
Kansas Agricultural Experiment Station Research Reports
Steam-flaked corn samples were used in a series of experiments to determine if refractive index could be used as a rapid, inexpensive method to predict starch availability. Results were best when samples were incubated for 15 min with 500 to 600 active units of enzyme/gm of grain prior to measuring on a hand-held refractometer. Correlations to starch availability determined from gas production by a commercial lab were R=.64 for whole flakes and R=.79 when samples were ground. Samples of corn flaked to different densities produced estimates of solubility similar to an in situ dry matter disappearance assay (R2 = .84, …
Integrated Control Of Sericea Lespedeza In Kansas, Walter H. Fick
Integrated Control Of Sericea Lespedeza In Kansas, Walter H. Fick
Kansas Agricultural Experiment Station Research Reports
Two experiments were conducted near Maple Hill, KS in 1998 to compare the effectiveness of herbicides and mowing used alone and in combination for control of sericea lespedeza (Lespedeza cuneata). Remedy® at 0.5 lb/acre was more effective when applied during the vegetative growth stage (>87%) than during flowering or seed production. Ally® at 0.4 oz/acre provided control equivalent to Remedy and was equally effective at both the vegetative and bloom stages. Both herbicides provided less than 60% control when applied during seed production. A single mowing on July 8 was not effective. Mowing followed in 6 weeks by Remedy …
Effect Of Level Of Surface-Spoiled Silage On The Nutritive Value Of Corn Silage-Based Rations, L.A. Whitlock, T. Wistuba, M.K. Siefers, B.E. Brent, K.K. Bolsen, Ronald V. Pope
Effect Of Level Of Surface-Spoiled Silage On The Nutritive Value Of Corn Silage-Based Rations, L.A. Whitlock, T. Wistuba, M.K. Siefers, B.E. Brent, K.K. Bolsen, Ronald V. Pope
Kansas Agricultural Experiment Station Research Reports
Twelve ruminally cannulated crossbred steers were used to determine the effects of level of surface-spoiled silages on dry matter (DM) intake and nutrient digestibilities of corn silage-based rations. Irrigated corn was harvested at the 80% milkline stage of maturity and ensiled in 3-ft-deep, pilot-scale, bunker silos and a 9-ft-diameter AgBag®. After 90 days, the bunkers were sealed with a single sheet of polyethylene, and this silage was designated "spoiled". The silage in the AgBag was designated "normal". The four rations contained 90% silage and 10% supplement (DM basis). The silages in the rations were: A) 100% normal; B) 75% normal: …
In Vitro Degradation Of Betaine By Ruminal Microbes, C.A. Löest, C.K. Armendariz, Evan C. Titgemeyer
In Vitro Degradation Of Betaine By Ruminal Microbes, C.A. Löest, C.K. Armendariz, Evan C. Titgemeyer
Kansas Agricultural Experiment Station Research Reports
An in vitro study was conducted to evaluate the degradation of betaine sources by rumen microbes. Five sources of betaine (anhydrous betaine, betaine-HCl, feed-grade betaine, lipidcoated betaine, and concentrated separator byproduct) were incubated in rumen fluid collected from steers fed grain- or forage-based diets. In vitro degradation of betaine was slower with the high roughage diet than the grain diet. Betaine from concentrated separator by-product was degraded most rapidly, but no large differences occurred among the other four sources. The disappearance of betaine from lipid-coated product indicates that it did not resist ruminal degradation. Although betaine from all sources was …
Supplemental Progestin Increases Pregnancy Rates In Suckled Beef Cows, G.C. Lamb, J.A. Cartmill, B.A. Hensley, S.E. El-Zarkouny, T.J. Marple, Jeffrey S. Stevenson, David M. Grieger
Supplemental Progestin Increases Pregnancy Rates In Suckled Beef Cows, G.C. Lamb, J.A. Cartmill, B.A. Hensley, S.E. El-Zarkouny, T.J. Marple, Jeffrey S. Stevenson, David M. Grieger
Kansas Agricultural Experiment Station Research Reports
In two experiments, combining a source of progestin with the ovulation synchronization protocol using gonadotropin-releasing hormone plus prostaglandin F2α (GnRH + PGF2α) tended to increase or statistically increase pregnancy rates in suckled cows compared to GnRH + PGF2α alone. These improvements were accomplished without any detected estrus when cows were inseminated and received a second injection of GnRH at 48 hr after PGF2α.