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Cattlemen's Day

1991

Articles 1 - 30 of 34

Full-Text Articles in Life Sciences

Effects Of Supplemental Ground Grain Sorghum During Grazing Of Endophyte-Infected Tall Fescue On Grazing And Subsequent Feedlot Performance Of Steers, A.S. Freeman, K.P. Coffey Jan 1991

Effects Of Supplemental Ground Grain Sorghum During Grazing Of Endophyte-Infected Tall Fescue On Grazing And Subsequent Feedlot Performance Of Steers, A.S. Freeman, K.P. Coffey

Kansas Agricultural Experiment Station Research Reports

Sixty-three crossbred steers (740 lb BW) were used to evaluate the effects of energy supplementation during grazing of endoplyte-infected tall fescue and on their subsequent feedlot performance. Grazing ADG was .53 lb/d for control (no supplementation) vs. .81 and 1.21 lb/d with .25% and .5% of BW as ground sorghum (GS), respectively. Grazing supplementation did not affect (P>.10) feedlot performance. Steers receiving .25% GS were 2.3% and 6.2% more efficient (P<.07) during the feedlot phase than 0% and .5% GS steers, respectively. The .5% GS steers were 3.8% less efficient (P<.07) during the feedlot phase than the 0% GS steers. Steers receiving grazing supplementation had increased (P<.07) adjusted backfat measurements and less desirable (P<.02) yield grades than non-supplemental controls. Supplementing steers grazing endophyte-infected fescue at .25% of BW with ground grain sorghum improved feedlot feed conversion compared to no supplementation and supplementing at .5% BW.


Monensin Levels In A Steam-Flaked Milo Finishing Diet With 4% Added Fat, Robert T. Brandt Jr., S.J. Anderson, J.K. Elliott Jan 1991

Monensin Levels In A Steam-Flaked Milo Finishing Diet With 4% Added Fat, Robert T. Brandt Jr., S.J. Anderson, J.K. Elliott

Kansas Agricultural Experiment Station Research Reports

Response to monensin (Control, 12.5, or 25 g/ton, air dry basis) by yearling steers fed a diet with 4% added fat was evaluated. For the entire study (104 d), daily gain, feed consumption and feed efficiency were unaffected (P>.25) by monensin. These results are in general agreement with some of our previous reports of diminished animal response to ionophores in fat-supplemented finishing diets. No adverse effects on animal health have been observed in our studies. However, whether withdrawing ionophores from finishing rations with 3.5-4% fat will affect the incidence of digestive upsets in commercial applications is ...


Breed And Management System Effects On Feedlot Performance And Carcass Traits, D.T. Hickok, R.R. Schalles, D.E. Franke, Michael E. Dikeman Jan 1991

Breed And Management System Effects On Feedlot Performance And Carcass Traits, D.T. Hickok, R.R. Schalles, D.E. Franke, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Eighty nine steers with different proportions of Angus, Hereford, Charolais, Brahman, and Gelbvieh breeding from rotational and terminal crossbreeding systems were produced in Louisiana and finished at KSU. Half of each breed group was placed in the feedlot at weaning (calves) and the other half as yearlings. Half of the each group was slaughtered at a low (0.3-0.4 in.), and the other half at high (0.5 - 0.6 in.) fat thickness. As percentage of Charolais and Gelbvieh breeding increased, feedlot performance improved. As percentage of Charolais, Gelbvieh, and Angus increased, carcass desirability improved. Steers started on feed ...


Seasonal Performance Of Finishing Heifers, Michael R. Langemeier, J. Mintert, Ted C. Schroeder Jan 1991

Seasonal Performance Of Finishing Heifers, Michael R. Langemeier, J. Mintert, Ted C. Schroeder

Kansas Agricultural Experiment Station Research Reports

This study examined the impact of date of feedlot placement on feed conversion, daily gain, and death loss. Results indicated that heifers placed on feed from September to December required more feed per pound of gain, had lower daily gains and higher death loss, and generally exhibited more variation in feeding performance than heifers placed during the rest of the year. Cattle feeders should take these performance variations into account when developing budgets and calculating breakeven sale prices for heifers.


Influence Of Supplemental Fat And Monensin Plus Tylosin On Performance And Carcass Traits Of Finishing Steers, Robert T. Brandt Jr., J.K. Elliott, Tiruvoor G. Nagaraja Jan 1991

Influence Of Supplemental Fat And Monensin Plus Tylosin On Performance And Carcass Traits Of Finishing Steers, Robert T. Brandt Jr., J.K. Elliott, Tiruvoor G. Nagaraja

Kansas Agricultural Experiment Station Research Reports

Interactions between supplemental fat (3.5%) and monensin plus tylosin (25 plus 10 g/ton, respectively) on animal performance and carcass traits were evaluated in a 125-d finishing trial. Interactions on feed consumption (P=.07) and feed efficiency (P=.11) suggested that the ionophore response was diminished in the presence of supplemental fat. Steers fed monensin plus tylosin had a lower (P=.005) incidence of liver abscesses whether fat was fed or not, indicating that supplemental fat had no effect on tylosin activity.


Utilization Of Near Infrared Reflectance Spectroscopy For Prediction Of The Nutritional Composition Of Beef And Pork Samples, G. Garcia-Lagombra, L.H. Harbers, J. Velazco, J.L. Morrill, B.B. Maziya, C.A.Z. Harbers Jan 1991

Utilization Of Near Infrared Reflectance Spectroscopy For Prediction Of The Nutritional Composition Of Beef And Pork Samples, G. Garcia-Lagombra, L.H. Harbers, J. Velazco, J.L. Morrill, B.B. Maziya, C.A.Z. Harbers

Kansas Agricultural Experiment Station Research Reports

Near-infrared reflectance spectroscopy (NIRS) offers the potential for rapid, low-cost analyses of meat samples. Beef and pork samples were analyzed by both standard laboratory (AOAC) methods and NIRS. Regression equations were developed to relate the two methods. Coefficients of determination between NIRS and AOAC results were .929 for dry matter, .965 for crude protein, and .996 for ether extract. NIRS and AOAC procedures yielded very similar results (DM, 38.82 vs 38.58; CP, 17.78 vs. 17.83; and EE, 18.83 vs. 18.00). NIRS appears to be a rapid and reliable predictor of nutritional composition of ground ...


Effect Of Feeding Rumen-Escape Lipid To Postpartum Beef Heifers, C.W. Peters, L.R. Corah, R.C. Cochran Jan 1991

Effect Of Feeding Rumen-Escape Lipid To Postpartum Beef Heifers, C.W. Peters, L.R. Corah, R.C. Cochran

Kansas Agricultural Experiment Station Research Reports

Feeding .25, .5, or 1 lb/d of rumen-escape lipid in a range supplement to beef heifers after calving resulted in increased calf weight gain and milk production at 70 d postpartum compared to control or feeding 2 lb daily. As level of rumen-escape lipid increased, plasma cholesterol and triglycerides also increased when measured after 14 and 28 d of lipid feeding. The interval from parturition to standing estrus generally was longer as level of rumen-escape lipid increased. It appears that intermediate levels (.25, .5, or 1 lb/d) of rumen escape lipid can enhance milk production and calf weight ...


Binding Agents For Low-Salt, Low-Fat, Restructured Beef Roasts: Connective Tissue Or Gelatin, P.B. Kenney, Donald H. Kropf, Curtis L. Kastner Jan 1991

Binding Agents For Low-Salt, Low-Fat, Restructured Beef Roasts: Connective Tissue Or Gelatin, P.B. Kenney, Donald H. Kropf, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

Connective tissue, from the outside of three major chuck muscles, was evaluated for binding properties when incorporated either raw or following preheating into precooked, restructured beef. Food-grade gelatin was also evaluated as a binding agent. Adding 10% raw or preheated connective tissue increased (P<.05) instrumentally measured tensile strength and reduced (P<.05) juiciness perception. One percent gelatin reduced (P<.05) cook yields and increased (P<.05) tensile strength but not to the degree of 10% raw or preheated connective tissue. Preheating had minimal effects on improving connective tissue utility. Based on the improvement in bind and cook yields, use of connective tissue as a binder is feasible in manufacturing low-salt, precooked, restructured beef.


Validation Of Real-Time Ultrasound Technology For Predicting Fat Thicknesses And Ribeye Areas Of Brangus Bulls From Four Months To Two Years Of Age, D.N. Waldner, R.R. Schalles, W. Olson, P. Houghton, L.R. Corah, Michael E. Dikeman, John A. Unruh Jan 1991

Validation Of Real-Time Ultrasound Technology For Predicting Fat Thicknesses And Ribeye Areas Of Brangus Bulls From Four Months To Two Years Of Age, D.N. Waldner, R.R. Schalles, W. Olson, P. Houghton, L.R. Corah, Michael E. Dikeman, John A. Unruh

Kansas Agricultural Experiment Station Research Reports

Sixty Brangus bulls were evaluated live with two real-time ultrasound instruments to estimate ribeye area (REA) and 12th rib fat thickness (FT) every 4 mo beginning at 4 mo and 12 mo of age, respectively, and continuing until 24 mo of age. At each evaluation period 10 bulls were slaughtered to determine actual REA and FT. Scanned mean FT was accurate (P<.05) at 16 mo and was not different (P=.09) from the actual mean FT. Scanned mean REA was accurate (P<.05) at 12 mo. Absolute differences between scanned and actual mean FT and REA were different (P<.05) from zero for all main effects. Increased level of operator (scanner) skill did not improve accuracy of FT or REA measurements, whereas increased level of interpreter (reader) skill improved accuracy of REA measurements. There was no difference (P>.05) between the two ultrasound units in accuracy of estimating FT or REA. Scanned measurements overestimated bulls with less than .20 in FT and greater than 13.6 in2 REA and underestimated bulls with more than .40 in ...


Food Safety Consortium, M. Vanier Jan 1991

Food Safety Consortium, M. Vanier

Kansas Agricultural Experiment Station Research Reports

In recent years, food safety has become an issue of concern for the beef industry, beef processors, and the consuming public. Even though America has the safest and most wholesome food supply in the world, consumers are worried about the safety of the meat they eat. In response to reports of illness from contamination by both microbes and chemicals in the meat supply, the United States Congress, in 1988, authorized and funded a Special Grants Program in the United States Department of Agriculture called the Food Safety Consortium. The members of the Consortium are Kansas State University, the University of ...


Beef Safety - Current Research And Summary Of Progress, F. Cunningham, Melvin C. Hunt, Curtis L. Kastner, Donald H. Kropf, B. Larson, D. Schafer, D. Simms, S. Smith, M. Vanier, Daniel Y.C. Fung Jan 1991

Beef Safety - Current Research And Summary Of Progress, F. Cunningham, Melvin C. Hunt, Curtis L. Kastner, Donald H. Kropf, B. Larson, D. Schafer, D. Simms, S. Smith, M. Vanier, Daniel Y.C. Fung

Kansas Agricultural Experiment Station Research Reports

Beef and beef products are significant parts of a balanced diet in the U.S. and major parts of the Kansas economy. Therefore, these products must be carefully processed, handled, and monitored for microbial quality to ensure safety for the consumer. KSU Animal Sciences research is designed to accomplish this end and to enhance demand for beef. We have made a major commitment to beef safety research. Moreover, results with beef are generally applicable to other meats.


Binding Agents For Low-Salt, Low-Fat, Restructured Beef Roasts: Fish Surimi And Beef Heart Or Skeletal Muscle, P.B. Kenney, Donald H. Kropf, Curtis L. Kastner Jan 1991

Binding Agents For Low-Salt, Low-Fat, Restructured Beef Roasts: Fish Surimi And Beef Heart Or Skeletal Muscle, P.B. Kenney, Donald H. Kropf, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

Five percent fish surimi, unwashed or washed ground beef, and washed or unwashed beef hearts were evaluated in precooked, chunked and formed, restructured beef roasts to determine if they would increase bind in low-salt (0.2% NaCl) product. An industry-like product with 1.0% NaCl and 5% unwashed ground beef was prepared, as well as a product with 0.2% NaCl and no binder. Roasts without binder were comparable in texture and integrity to those prepared with binding agents. Washing ground heart improved the sensory traits, texture measured instrumentally, and oxidative stability of the resulting products. Color was more stable ...


Pregnancy Rates In Beef Cattle After Administration Of Gnrh Agonist 11 To 14 Days After Insemination, I. Rettmer, L.R. Corah, Jeffrey S. Stevenson Jan 1991

Pregnancy Rates In Beef Cattle After Administration Of Gnrh Agonist 11 To 14 Days After Insemination, I. Rettmer, L.R. Corah, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Pregnancy rates were assessed in suckled beef cows (n=145) and virgin beef heifers (n=606) of mixed breeding following an injection of either 100 or 200 μg of a GnRH agonist given once on d 11-14 after estrus and insemination. In heifers, the 100 μg dose improved (P<.08) pregnancy rates, based on rectal palpation of the uterus, and at both doses, based on actual calving dates. There was no effect of either dose on pregnancy rates of suckled cows, based on palpation results, but actual calving showed a 21% increase (P<.08) in pregnancy rates in cows treated with 100 μg of the GnRH agonist.


Follicular Development And Reproductive Hormone Changes During Postpartum Anestrus In Suckled Beef Cows, R.C. Perry, L.R. Corah, W.E. Beal, G.H. Kiracofe, J. Ernest Minton, R.C. Cochran, J.R. Brethour, Jeffrey S. Stevenson Jan 1991

Follicular Development And Reproductive Hormone Changes During Postpartum Anestrus In Suckled Beef Cows, R.C. Perry, L.R. Corah, W.E. Beal, G.H. Kiracofe, J. Ernest Minton, R.C. Cochran, J.R. Brethour, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Twenty-six, Hereford x Angus, suckled cows were utilized to determine patterns of follicular development and associated changes in reproductive hormones during postpartum anestrus and first estrous cycles. Ultrasonography per rectum was used to monitor follicular size and detect ovulation. Dietary energy and(or) body condition influenced patterns of follicular development during postpartum anestrus. Follicular growth occurred in waves during this period in cows that were in adequate body condition and adequately fed, and follicular development appeared to be related to serum concentrations of luteinizing hormone and estradiol. Two distinct characteristics were associated with follicular development before the first postpartum ovulation ...


Seasonal Performance Of Finishing Steers, J. Mintert, Michael R. Langemeier, Ted C. Schroeder Jan 1991

Seasonal Performance Of Finishing Steers, J. Mintert, Michael R. Langemeier, Ted C. Schroeder

Kansas Agricultural Experiment Station Research Reports

Analysis of 10 years of closeouts from a western Kansas feedlot demonstrated that steer performance exhibits significant seasonal variation. Steers weighing 700 to 800 lb when placed on feed in September through December had feed conversions roughly 12% higher than those placed in March and April. Although feed conversion varied seasonally, dry matter feed intake varied much less, causing daily gain to mirror feed conversion. Gain was seasonally highest for steers placed in March and April and lowest for those placed in September through December. Cattle feeders should consider these variations in seasonal performance, as they develop profit projections for ...


Kansas Steer Futurities: An Economic Analysis Of Retained Ownership And A Summary Of Cattle Performance From 1974-1988, D. Simms, J. Mintert, A. Maddux Jan 1991

Kansas Steer Futurities: An Economic Analysis Of Retained Ownership And A Summary Of Cattle Performance From 1974-1988, D. Simms, J. Mintert, A. Maddux

Kansas Agricultural Experiment Station Research Reports

The performance, carcass characteristics, and economic data from over 6,200 steers entered in Kansas Steer Futurities from 1974 through 1988 were summarized to evaluate production trends and profitability. The steers' delivery weights, final weights, and frame scores increased over the 14-year period, while daily gain was essentially unchanged. The quality grade, fat thickness, and yield grade all decreased slightly. Ribeye area increased slightly, but ribeye area per unit of carcass remained constant over the years. Based on the delivery weight of the steers, price, normal production relationships, and estimated production costs, we estimate that net returns over cash costs ...


Seasonal Variation In Quality Of Grazed Forage During A Drought Year, R.C. Cochran, E.S. Vanzant Jan 1991

Seasonal Variation In Quality Of Grazed Forage During A Drought Year, R.C. Cochran, E.S. Vanzant

Kansas Agricultural Experiment Station Research Reports

Concentration of fiber in the forage selected by beef steers grazing bluestem range during a drought year (1989) was highest in the winter but declined substantially in the spring and remained fairly constant throughout summer. Conversely, crude protein concentration was lowest during the winter, peaked during the spring, declined through early summer, but increased in the late summer before declining during the fall. Precipitation was well below normal in all months except August, September, and October, which were above normal. Improvement in forage quality during those months was probably due to stimulation of late-season forage growth in response to elevated ...


Increasing Levels Of Grain Supplementation For Intensive-Early Stocked Steers: Three-Year Summary, R.C. Cochran, Robert T. Brandt Jr., E.S. Vanzant, E.M. Clary, Clenton E. Owensby Jan 1991

Increasing Levels Of Grain Supplementation For Intensive-Early Stocked Steers: Three-Year Summary, R.C. Cochran, Robert T. Brandt Jr., E.S. Vanzant, E.M. Clary, Clenton E. Owensby

Kansas Agricultural Experiment Station Research Reports

During the initial 3 years of a 4-year experiment, average daily gain tended to increase in direct proportion to increasing levels of grain sorghum supplementation (2.3, 2.5 and 2.7 lb gain per day for the control and 2 and 4 lb supplement per day, respectively). The amount of grass remaining in the pastures at the end of the growing season (October 1) was greater in each of the 3 years when cattle were supplemented at 4 lb/day. During the 2 years (1989 and 1990) that feedlot performance was monitored, level of supplementation for grazing steers did ...


Influence Of Increasing Amounts Of Supplemental Alfalfa Hay On Intake And Utilization Of Dormant, Winter-Harvested, Bluestem-Range Forage By Beef Steers, E.S. Vanzant, R.C. Cochran Jan 1991

Influence Of Increasing Amounts Of Supplemental Alfalfa Hay On Intake And Utilization Of Dormant, Winter-Harvested, Bluestem-Range Forage By Beef Steers, E.S. Vanzant, R.C. Cochran

Kansas Agricultural Experiment Station Research Reports

Sixteen, ruminally cannulated, beef steers were used in an intake/digestion experiment to determine the effects of supplementing a dormant, winter-harvested, bluestem range, forage diet with increasing amounts of moderate quality alfalfa. Steers were allowed ad libitum access to dormant forage and were supplemented with alfalfa hay at: 1) .23, 2) .47, 3).70, and 4) .94 % of BW on a dry matter (DM) basis. As the amount of supplemental alfalfa increased, dormant forage intake decreased, but total DM intake increased. Dry matter digestibility was unaffected by treatment, and only minor changes were noted for ruminal fermentation characteristics. Changes in ...


Dehydrated Alfalfa Pellets And Soybean Meal/Grain Sorghum In Step-Up Winter Supplementation Programs For Spring-Calving Beef Cows, E.S. Vanzant, R.C. Cochran, L.R. Corah, G.H. Kiracofe Jan 1991

Dehydrated Alfalfa Pellets And Soybean Meal/Grain Sorghum In Step-Up Winter Supplementation Programs For Spring-Calving Beef Cows, E.S. Vanzant, R.C. Cochran, L.R. Corah, G.H. Kiracofe

Kansas Agricultural Experiment Station Research Reports

The performance response to a stepwise increase in the level of supplement fed to cows across the winter supplementation period was studied by feeding 112 Hereford x Angus cows the following treatments: dehydrated alfalfa pellets (DEHY) or soybean meal/grain sorghum (SS), each either level-fed (constant daily amount from December 1 to calving) or fed in a step-up program (low level from December 1 to 30; moderate level from December 31 to January 29; high level from January 30 to calving; avg = amount fed with level-feeding). Cow weight and condition changes and calf performance were favored by the step-up supplementation ...


Summer Annual Forages In South Central Kansas, Dale A. Blasi, Dale L. Fjell, James P. Shroyer, Gerry L. Kuhl, William F. Heer Jan 1991

Summer Annual Forages In South Central Kansas, Dale A. Blasi, Dale L. Fjell, James P. Shroyer, Gerry L. Kuhl, William F. Heer

Kansas Agricultural Experiment Station Research Reports

Six, summer annual forages and three forage sorghums were evaluated for forage yield and quality under south central Kansas dryland conditions. The sudans and forage sorghums produced similar amounts of dry matter per acre, and yields for these two forage types were significantly higher than for the pearl millet cultivars tested. Conversely, the pearl millets provided higher quality forage in terms of crude protein and acid detergent fiber levels. Droughty conditions severely limited forage yields. However, forage nitrate and prussic acid levels were all relatively low, indicating the utility of raising the cutter bar to avoid harvesting the lower stalks ...


Periparturient Changes In Intake, Rumen Capacity, And Selected Blood Metabolites In Beef Cows, T.A. Stanley, R.C. Cochran, D.L. Harmon, E.S. Vanzant Jan 1991

Periparturient Changes In Intake, Rumen Capacity, And Selected Blood Metabolites In Beef Cows, T.A. Stanley, R.C. Cochran, D.L. Harmon, E.S. Vanzant

Kansas Agricultural Experiment Station Research Reports

Four, ruminally cannulated, Hereford x Angus cows were used to study factors associated with feed intake patterns around parturition. Feed intake during the final trimester of gestation was relatively stable, in spite of a noticeable decrease in ruminal capacity. Postpartum feed intake appeared to increase, as did ruminal capacity. Blood progesterone fell after parturition, whereas estradiol did not change except for a large rise around parturition. Some plasma metabolites measured differed before and after calving; however, magnitude and patterns of change do not suggest a direct relationship with intake.


Effects Of Hybrid And Maturity At Harvest On Agronomic Performance Of Corn For Silage, R. Suazo, R.N. Sonon, L. Pfaff, J.T. Dickerson, K.K. Bolsen Jan 1991

Effects Of Hybrid And Maturity At Harvest On Agronomic Performance Of Corn For Silage, R. Suazo, R.N. Sonon, L. Pfaff, J.T. Dickerson, K.K. Bolsen

Kansas Agricultural Experiment Station Research Reports

Twelve, commercial, corn hybrids were grown under irrigated conditions in 1990 and evaluated for agronomic and silage characteristics at three stages of maturities (1/2 milk line, black layer, and 7 days post-black layer). Time to mid-anthesis and mid-silk ranged from 62 to 68 and 65 to 70 days, respectively, and plant height ranged from 78 to 98 inches. Whole-plant dry matter (DM) content and whole-plant DM and grain yields for the 12 hybrids ranged from 23.6 to 53.7 %, 6.1 to 9.6 tons of DM per acre, and 60 to 170 bushels per acre, respectively, over ...


Effects Of Maturity At Harvest And Cultivar On Agronomic Performance Of Forage Sorghum And The Nutritive Value Of Selected Sorghum Silages, R.N. Sonon, R. Suazo, L. Pfaff, J.T. Dickerson, K.K. Bolson Jan 1991

Effects Of Maturity At Harvest And Cultivar On Agronomic Performance Of Forage Sorghum And The Nutritive Value Of Selected Sorghum Silages, R.N. Sonon, R. Suazo, L. Pfaff, J.T. Dickerson, K.K. Bolson

Kansas Agricultural Experiment Station Research Reports

These studies examined the agronomic performance of 20 forage sorghum cultivars, each harvested at three stages of maturity in 1990. Whole-plant dry matter (DM) yields were highest at the late-dough stage of kernel maturity, whereas DM content and grain yields steadily increased as maturity advanced. A voluntary intake and digestion trial was conducted with 12 grain and forage sorghum silages harvested at the late-dough stage in 1989. The highest silage DM intakes and digestibilities were obtained with the high-grain yielding hybrids.


Top Spoilage Losses In Horizontal Silos In Western Kansas, J.T. Dickerson, G. Ashbell, L. Pfaff, K.K. Bolsen, B.E. Brent, J.E. Bradford, R.L. Smith Jan 1991

Top Spoilage Losses In Horizontal Silos In Western Kansas, J.T. Dickerson, G. Ashbell, L. Pfaff, K.K. Bolsen, B.E. Brent, J.E. Bradford, R.L. Smith

Kansas Agricultural Experiment Station Research Reports

The top 3 feet from 30 horizontal silos was sampled at three depths to determine top spoilage losses, using ash content as an internal marker. When compared to face samples, corn and forage sorghum silages exhibited similar additional organic matter (OM) losses in the top 18 inches. In the top 18 inches, covering silage reduced spoilage losses of OM from 41 to 27 percentage units compared to uncovered counterparts. Covering corn silage reduced spoilage losses of OM from 49 to 31 and 9 to 1 percentage units in the top and second 18 inches, respectively. Similar reductions in OM losses ...


Rate And Extent Of Top Spoilage Losses Of Alfalfa Silage Stored In Horizontal Silos1, J.T. Dickerson, Y. Niwa, K.K. Bolsen, B.E. Brent, C. Lin, J.E. Bradford Jan 1991

Rate And Extent Of Top Spoilage Losses Of Alfalfa Silage Stored In Horizontal Silos1, J.T. Dickerson, Y. Niwa, K.K. Bolsen, B.E. Brent, C. Lin, J.E. Bradford

Kansas Agricultural Experiment Station Research Reports

Effects of covering, time, and depth from the surface on the rate and extent of top spoilage losses in alfalfa silages stored in horizontal silos were studied under pilot- and farm-scale conditions. Covering silages increased silage DM and nutrient recoveries, regardless of time or depth from the original surface, when compared to uncovered counterparts. Treatment x location x time interactions (P<.001) were observed for pH, lactic acid, and DM recovery in uncovered silages. By week 2 post-ensiling, significant deterioration had occurred in the top foot of uncovered silages, as evidenced by higher pH (7.36) and lower lactic acid (2.1% of the silage DM) and DM recoveries (85.6% of the DM ensiled). After week 4 post-ensiling, significant deterioration had occurred in the second foot from the surface, and it continued into the third foot after week 7. These data indicate that protecting the silage stored in the top 3 ft of horizontal silos immediately after filling should greatly increase storage efficiency.


Effects Of Crop Species On Indigenous Microflora And Of Silage Additives On The Microbial Succession During The Ensiling Process, C. Lin, R.A. Hart, K.K. Bolsen, J.T. Dickerson, B.E. Brent Jan 1991

Effects Of Crop Species On Indigenous Microflora And Of Silage Additives On The Microbial Succession During The Ensiling Process, C. Lin, R.A. Hart, K.K. Bolsen, J.T. Dickerson, B.E. Brent

Kansas Agricultural Experiment Station Research Reports

This study considered the effects of crop species (alfalfa vs. corn) and silage additives on six categories of indigenous microorganisms (those naturally occurring on the crop) important to silage fermentation, and on the microbial succession during the ensiling process. The numbers of streptococci, Enterobacteriaceae, yeasts and molds, lactate-using yeasts, and carbohydrate- fermenting clostridial spores were higher on corn than on alfalfa. The lactic acid bacteria (LAB) comprised less than 2% of the total microbial populations on both crops. Alfalfa treated with Biomate® inoculant and the combination of dextrose and Biomate showed higher LAB counts than the control and dextrose treatments ...


Comparison Of Synovex-S® And Steer-Oid® In Finishing Yearling Steers, Robert T. Brandt Jr., S.J. Anderson, J.K. Elliott Jan 1991

Comparison Of Synovex-S® And Steer-Oid® In Finishing Yearling Steers, Robert T. Brandt Jr., S.J. Anderson, J.K. Elliott

Kansas Agricultural Experiment Station Research Reports

Synovex-S (SS) and STEER-oid (SO) were compared in a 122-d finishing study. No differences were observed over the entire study for animal performance or carcass traits. However, in the final period (d 91-122), steers implanted with SO gained 8.4% faster (P=.17) and 8.7% more efficiently (P=.10) than steers implanted with SS, suggesting that estradiol payout in this period was less diminished for SO implants. The importance of this finding is unknown, because it is generally recommended that steers fed for longer periods of time be reimplanted midway through the finishing period to maintain maximal implant response.


Evaluation Of Revalor® Implants For Stocker-Finishing Steers, Robert T. Brandt Jr., R.J. Grant, Ronald V. Pope Jan 1991

Evaluation Of Revalor® Implants For Stocker-Finishing Steers, Robert T. Brandt Jr., R.J. Grant, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Revalor® implants (containing trenbolone acetate plus estradiol) were evaluated in a grazing-finishing system using steers with a known previous implant history. Grazing gains were not improved by either Ralgro® or Revalor implants, suggesting that previously implanted steers may not respond to implants during a later growing phase. During the finishing phase, steers implanted with Revalor gained 5.4 to 8.0% faster (P<.05) than steers implanted with Synovex-S®. Gain efficiency in the finishing period was improved 4.8% (P<.10) for steers receiving no pasture implant and a Revalor implant during the finishing phase (0R), compared with steers receiving Ralgro/Synovex (RS) or Revalor/Revalor (RR) implants in the pasture/feedlot phases. Steers implanted with RR had larger (P<.05) ribeye areas than RS steers, with 0R steers intermediate. However, RR steers had a 20 percentage unit reduction (P<.05) in carcasses reaching the choice grade compared to RS steers. Revalor can improve steer feedlot performance, but multiple implantation may reduce quality grade.


Timing Of Trenbolone Acetate Implants On Performance, Carcass Characteristics, And Beef Quality Of Finishing Steer Calves, G. L. Huck, Robert T. Brandt Jr., D.D. Simms, Gerry L. Kuhl, Michael E. Dikeman Jan 1991

Timing Of Trenbolone Acetate Implants On Performance, Carcass Characteristics, And Beef Quality Of Finishing Steer Calves, G. L. Huck, Robert T. Brandt Jr., D.D. Simms, Gerry L. Kuhl, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Angus and Angus-cross calves (632 lb) were utilized in a finishing study to evaluate the effects of implanting with estradiol and progesterone (Synovex-S®) and(or) trenbolone acetate (Finaplix®) on performance of finishing steers. Over the entire finishing period (117 d), implanted steers had higher (P<.05) daily gains and were more efficient than nonimplanted steers. Carcasses from implanted cattle had heavier (P<.05) hot weights and larger (P<.05) ribeye areas. Steers implanted with Finaplix had larger (P<.05) ribeye areas than those implanted with Synovex only. Marbling scores and quality grades were not affected by implant treatments. Rib (9-10-11) sections from implanted steers were heavier (P<.05) as a result of both heavier (P<.05) bone and soft tissue weights. However, no differences in percentages of protein, fat, and moisture were detected by proximate analysis of the soft tissue. Concomitant use of Finaplix with Synovex-S did not affect performance of Angus and Anguscrossed steer calves.