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Whole-Plant Corn, Forage Sorghum, And Grain Sorghum Silages For Growing Cattle, B.S. Dalke, R.N. Sonon, S.M. Gramlich, K.K. Bolsen
Whole-Plant Corn, Forage Sorghum, And Grain Sorghum Silages For Growing Cattle, B.S. Dalke, R.N. Sonon, S.M. Gramlich, K.K. Bolsen
Kansas Agricultural Experiment Station Research Reports
Agronomic and cattle performance traits were measured for eight silages produced in 1991. The silages were: irrigated Pioneer 3377 corn; dryland (early-planted) DeKalb 535 corn; irrigated and dryland DeKalb DK 42Y grain sorghum; and dryland forage sorghums Cargill 200F, Pioneer 947, Northrup King (NK) 300, and Funk's 102F. The irrigated corn and NK 300 and Funk's 102F forage sorghums had the highest whole-plant dry matter (DM) yields per acre; early-planted corn had the lowest yield. The dryland grain sorghum had the highest grain yield and the early-planted corn, the lowest. Average daily gains (ADG) were excellent for steers fed each …
Factors Affecting Pregnancy Rates And Calving Difficulty In Commercial Beef Heifers, S.D. Utter, P.L. Houghton, L.R. Corah, M.F. Spire, James J. Higgins, M.D. Butine
Factors Affecting Pregnancy Rates And Calving Difficulty In Commercial Beef Heifers, S.D. Utter, P.L. Houghton, L.R. Corah, M.F. Spire, James J. Higgins, M.D. Butine
Kansas Agricultural Experiment Station Research Reports
Data from yearling Angus and Angus crossbred beef heifers from a commercial ranch were used to identify factors affecting pregnancy rates (n=342) and calving difficulty (n=295). Production data analyzed included prebreeding weight, average daily gain during the breeding season, and postbreeding weight; evaluations of hip height, frame score, weight:height ratio, and reproductive tract score were made at approximately 1 yr of age. Pregnancy rates were affected significantly by weight:height ratio, prebreeding weight, and reproductive tract score. However, based on correlation coefficients, the magnitude of influence of these traits on first-service conception and overall pregnancy rates was low. Calving difficulty in …
Rate And Extent Of Losses From Top Spoilage In Alfalfa Silages Stored In Bunker Silos, D.L. Holthaus, D.R. Bonilla, L. Pfaff, D. Haverkamp, B.S. Dalke, R.N. Sonon, K. Budiongo, K.K. Bolsen, Matthew A. Young
Rate And Extent Of Losses From Top Spoilage In Alfalfa Silages Stored In Bunker Silos, D.L. Holthaus, D.R. Bonilla, L. Pfaff, D. Haverkamp, B.S. Dalke, R.N. Sonon, K. Budiongo, K.K. Bolsen, Matthew A. Young
Kansas Agricultural Experiment Station Research Reports
Alfalfa silages were made in pilot- and farm-scale silos, and five sealing treatments were compared. After 90 days, sealing dramatically reduced DM losses at the 5 and 10 in. depths in the farm silos and at the 0 to 12, 12 to 24, and 24 to 36 in. depths in the pilot silos. Extending the storage period to 180 days in pilot silos had no effect on DM losses for sealed or delay sealed silages, but DM losses for unsealed silages continued to increase at all three depths. Placing a roof over the unsealed, farm-scale silo increased the silage DM …
Progesterone Concentrations, Estrous Response, And Fertility In Beef Heifers After Estrous Synchronization Using Melengestrol Acetate® And Prostaglandin F2Α, C.W. Peters, Robert L. Larson, L.R. Corah
Progesterone Concentrations, Estrous Response, And Fertility In Beef Heifers After Estrous Synchronization Using Melengestrol Acetate® And Prostaglandin F2Α, C.W. Peters, Robert L. Larson, L.R. Corah
Kansas Agricultural Experiment Station Research Reports
Melengestrol acetate (MGA®) and prostaglandin F2α(PG; Lutalyse®) were used to synchronize estrus in 757 yearling, virgin, beef heifers on six commercial ranches. Heifers were inseminated artificially (AI) 12 h after first detected estrus; those not detected in estrus were time-inseminated 72 h post-PG injection. Heifers detected in estrus by 72 h had higher AI and overall pregnancy rates than their counterparts not detected in estrus. Heifers with serum progesterone>1 ng/ml at PG administration were generally more fertile than those with progesterone<1 ng/ml. Of the heifers not detected in estrus and with low progesterone (<1 ng/ml), 24% still conceived to the timed insemination at 72 h, but only 73% became pregnant during the entire breeding period. Overall AI conception rate, based on estrous detection and timed insemination, was 49% and varied from 24% to 69% among the six ranches. Heifers exhibiting estrus and with elevated (>1 ng/ml) serum progesterone showed acceptable pregnancy rates (63% AI and 94% overall).
Use Of Visual Appearance As An Indicator Of Degree Of Doneness In Ground Beef Patties, K.E. Warren, Melvin C. Hunt, M.A. Hague, Donald H. Kropf, Sally L. Stroda
Use Of Visual Appearance As An Indicator Of Degree Of Doneness In Ground Beef Patties, K.E. Warren, Melvin C. Hunt, M.A. Hague, Donald H. Kropf, Sally L. Stroda
Kansas Agricultural Experiment Station Research Reports
Outbreaks of food-borne illness have emphasized the need for proper cooking of ground beef patties. Because of difficulties in measuring internal temperature of ground beef patties, visual indicators usually are used to estimate degree of doneness. As internal temperature increases from 130 to 170 ÌŠF, the internal appearance is expected to change from very red to brown and juice color from red to clear. Based on ground beef patties from three sources, we found that internal color over-estimated internal temperature. Expressible juice decreased in redness as internal temperature increased but did not run clear even at temperatures over 160 ÌŠF. …
Value-Added Beef Processing: Increasing The Value Of Beef Shanks Using Baadertm Processing Technology, R.E. Campbell, Melvin C. Hunt
Value-Added Beef Processing: Increasing The Value Of Beef Shanks Using Baadertm Processing Technology, R.E. Campbell, Melvin C. Hunt
Kansas Agricultural Experiment Station Research Reports
Using a BaaderTM desinewing machine on beef shanks can increase the value of a beef carcass by $1 to $5 by improving palatability and texture and reducing fat. By varying belt pressure and drum opening size and passing shanks twice through the desinewer, we obtained commercially acceptable yields. Maximum lean yield was 93% of the shank using 5 mm drum holes for both passes. With 3 mm drum holes, very lean produced on the first pass. Using desinewed lean and flaking the sinew with an Urschel Commitrol®, we produced low-fat (10%) ground beef patties. Patties from desinewed lean alone and/or …
Protein Supplementation Of Ammoniated Wheat Straw: Effect On Performance Of Beef Cows, G.D. Fike, D.D. Simms, Robert T. Brandt Jr., R.C. Cochran, E.S. Vanzant, Gerry L. Kuhl
Protein Supplementation Of Ammoniated Wheat Straw: Effect On Performance Of Beef Cows, G.D. Fike, D.D. Simms, Robert T. Brandt Jr., R.C. Cochran, E.S. Vanzant, Gerry L. Kuhl
Kansas Agricultural Experiment Station Research Reports
Mature, crossbred beef cows (n = 87 in 1990-91, n = 84 in 1991-1992) were used to determine the effects of protein supplementation to cows fed ammoniated wheat straw during late gestation. Treatments included: 1) Control (C) - no supplement, 2) Low Protein (LP) - 4.5 lb of a 10% crude protein (CP) supplement, 3) Medium Protein (MP) - 4.5 lb of a 20% CP supplement, and 4) High Protein (HP) - 4.5 lb of a 30% CP supplement. Supplementation increased weight gain over controls (P<.01). HP cows gained more (P=.05) weight than LP-supplemented cows and tended (P=.11) to gain more weight than MP-supplemented cows. Supplementation also increased body condition score (BCS, 1-9 scale) over control cows (P<.01), but no difference was noted among supplemented groups. From the end of the feeding period until weaning, cows previously supplemented lost more weight (P<.01) than controls and exhibited little change in BCS, whereas controls increased BCS by .5 during the same period. Calving dates, calf birth weights, calf weaning weights, calf average daily gain, percent of cows cycling prior to breeding, and percent of cows pregnant did not differ between treatments. Consequently, although additional protein increased weight gain prior to parturition, this response did not impact economically important traits.
Factors That Influence Number Of Bids On Finished Cattle, Ted C. Schroeder, J. Mintert, R. Jones
Factors That Influence Number Of Bids On Finished Cattle, Ted C. Schroeder, J. Mintert, R. Jones
Kansas Agricultural Experiment Station Research Reports
Previous research indicates that the number of bids received on pens of fed cattle has a positive influence on price. This study was undertaken to determine what factors influence the number of bids received on pens of cattle. The number of bids for fed cattle was investigated in 13 southwestern Kansas feedyards during May through November, 1990. Results indicated that cattle of desired weight, with higher estimated carcass yield and quality grade, in larger pen sizes, and sold in the middle of the week received the most bids. In addition, feedyard asking price relative to packer price offers also influenced …
Reproductive Performance Of Yearling Beef Heifers After Estradiol Benzoate And Estrous Synchronization, R.P. Bolze, C.W. Peters
Reproductive Performance Of Yearling Beef Heifers After Estradiol Benzoate And Estrous Synchronization, R.P. Bolze, C.W. Peters
Kansas Agricultural Experiment Station Research Reports
Injectable estradiol (estradiol benzoate) was evaluated for its effect on the reproductive performance of yearling beef heifers whose estrous cycles were synchronized using the melengestrol acetate/prostaglandin F 2 α (MG- 2 A®/PG) system. Estradiol was injected 40 h after prostaglandin. Heifers were inseminated artificially (AI) 12 h after first observed heat during a 35-d AI period followed by 28 d of bull exposure. Estradiol had no effect on heat response or first-service pregnancy rate to AI during the synchronized period (5 d) and had no significant effect on overall AI pregnancy rate (35 d), cumulative pregnancy rate (63 d), or …
Summer Annual Forages In South Central Kansas, William F. Heer, Dale A. Blasi, Dale L. Fjell
Summer Annual Forages In South Central Kansas, William F. Heer, Dale A. Blasi, Dale L. Fjell
Kansas Agricultural Experiment Station Research Reports
Six summer annuals and three forage sorghums were evaluated for forage yield and quality under south central Kansas dryland conditions. When cut in the late boot to early heading stage, all forage types (millet, sudan, sorghum-sudan, and forage sorghum) produced similar dry matter yields, with no consistent differences in nutritional quality. Allowing the forages to reach maturity prior to cutting increased total yield per acre but decreased the crude protein content. The millets were higher in protein at maturity than the sudans or forage sorghums. However, the forage sorghums produced the most mature forage, whereas common sudan yielded the least. …
Evaluation Of 24 Corn Hybrids For Silage Agronomic Performance Under Both Irrigated And Dryland Conditions, R.N. Sonon, B.S. Dalke, D.L. Holthaus, D.R. Bonilla, L. Pfaff, John E. Boyer, B.E. Brent, K.K. Bolsen, Matthew A. Young
Evaluation Of 24 Corn Hybrids For Silage Agronomic Performance Under Both Irrigated And Dryland Conditions, R.N. Sonon, B.S. Dalke, D.L. Holthaus, D.R. Bonilla, L. Pfaff, John E. Boyer, B.E. Brent, K.K. Bolsen, Matthew A. Young
Kansas Agricultural Experiment Station Research Reports
In 1992, 24 corn hybrids were grown under both irrigated and dryland conditions and were harvested at 90% of the kernel milk line. Growing condition and hybrid significantly affected plant height and the number of days to the tasseling and silking stages. Most dryland hybrids had higher dry matter (DM) contents than irrigated hybrids, but all 24 hybrids had higher grain yields under irrigation. Growing condition and hybrid also significantly affected whole-plant DM and stover yields and percentages of cob and stover. The grain portion made the greatest contribution to the higher whole-plant silage yields for the irrigated hybrids compared …
Agronomic Performance And Silage Quality Traits Of Forage Sorghum Hybrids In 1992, R.N. Sonon, B.S. Dalke, D.L. Holthaus, D.R. Bonilla, L. Pfaff, K.K. Bolsen, Matthew A. Young
Agronomic Performance And Silage Quality Traits Of Forage Sorghum Hybrids In 1992, R.N. Sonon, B.S. Dalke, D.L. Holthaus, D.R. Bonilla, L. Pfaff, K.K. Bolsen, Matthew A. Young
Kansas Agricultural Experiment Station Research Reports
Rainfall was much above and temperature much below normal during the 1992 growing season. Both whole-plant dry matter (DM) and grain yields were excellent for all 11 hybrids. The two short, mid-maturing, forage sorghums (Northrup King 300 and Golden Harvest H-45) had the highest silage and grain yields; the early-maturing (Cargill 200F) and male sterile (Golden Harvest H-1) forage sorghums and the grain sorghum (DeKalb DK 42Y) the lowest silage yields. A storm with high winds on October 7 and 8 caused severe lodging in all six mid- and late-maturing hybrids (earlier-maturing hybrids had already been harvested). The 10 forage …
Effects Of Hybrid, Growing Condition, Storage Time, And Pioneer 1174® Silage Inoculant On Agronomic Performance And Nutritive Value Of Whole-Plant Corn And Grain Sorghum Silages, R. Suazo, R.N. Sonon, K.K. Bolsen
Effects Of Hybrid, Growing Condition, Storage Time, And Pioneer 1174® Silage Inoculant On Agronomic Performance And Nutritive Value Of Whole-Plant Corn And Grain Sorghum Silages, R. Suazo, R.N. Sonon, K.K. Bolsen
Kansas Agricultural Experiment Station Research Reports
In 1989, two Pioneer corn hybrids, 3377 and 3389, were grown under irrigation and harvested at 80% milk line kernel maturity. Voluntary intakes and ADF digestibilities were similar for all hybrid, inoculant, and storage time combinations; however, DM digestibility was higher for 3377 silage than for 3389, and DM, CP, and NDF digestibilities were higher at the 50- than the 250-day storage time. The inoculant did not influence either voluntary intake or digestibility. In 1990, the same corn hybrids and DeKalb DK 42Y and Pioneer 8358 grain sorghum hybrids were grown under both irrigated and dryland conditions. Whole-plant DM contents …
Effect Of Molybdenum/Sulfur-Induced Copper Deficiency Upon Enzyme Levels And Reproduction In Heifers, J.D. Arthington, L.R. Corah
Effect Of Molybdenum/Sulfur-Induced Copper Deficiency Upon Enzyme Levels And Reproduction In Heifers, J.D. Arthington, L.R. Corah
Kansas Agricultural Experiment Station Research Reports
To evaluate the effects of molybdenum (Mo)- and sulfur (S)- induced copper (Cu) deficiency, 99 prepubertal heifers were allotted into two groups. Treated heifers (n = 72) were fed a grass hay naturally high in Mo (Mo = 8 ppm and Cu = 3.2 ppm). Sulfur was supplemented to achieve a dietary level of .3%. Control heifers (n = 27) received a grass hay with normal levels of Mo (Mo = .47 ppm and Cu = 1.5 ppm). Copper was supplemented to achieve a dietary level of 8 ppm. Diets were fed for a period of 163 d. Liver samples …
Growth And Reproductive Characteristics In Heifers Fed Endophyte-Infected Tall Fescue And Oxytetracycline, C.W. Peters, F.K. Brazle, L.R. Corah
Growth And Reproductive Characteristics In Heifers Fed Endophyte-Infected Tall Fescue And Oxytetracycline, C.W. Peters, F.K. Brazle, L.R. Corah
Kansas Agricultural Experiment Station Research Reports
Heifers developed on high-endophyte, tall fescue gained half as much weight (56 vs 117 lb; P<.01) and had a lower 35-day pregnancy rate (15 vs 58%; P<.01) compared to heifers fed low endophyte, tall fescue. Based on progesterone serum concentrations and visual determination of estrus, the proportion of heifers that had attained puberty by the start of the breeding season tended (P=.11) to be greater when fed oxytetracycline (55 vs 68%).
Effect Of Density Of Steam Flaked Milo On Animal Performance, Mill Production Rate, And Subacute Acidosis, Robert T. Brandt Jr., A.S. Freeman, T.P. Eck, Christopher D. Reinhardt, Keith C. Behnke
Effect Of Density Of Steam Flaked Milo On Animal Performance, Mill Production Rate, And Subacute Acidosis, Robert T. Brandt Jr., A.S. Freeman, T.P. Eck, Christopher D. Reinhardt, Keith C. Behnke
Kansas Agricultural Experiment Station Research Reports
In Trial 1, 336 yearling steers (755 lb) were fed diets containing milo flaked to 22 (L), 25 (M), or 28 (H) lb/bu. The steers fed L consumed 3.2% less dry matter than cattle fed H (P<.05) and had 6.9% lower gains (P<.05). Feed efficiency tended (P=.15) to favor cattle fed H. The H milo was flaked 27% faster than M and 67% faster than L (P<.0001), resulting in lower production cost for the heavy flakes. In Trial 2, six ruminally cannulated steers were fed the same diets used in Trial 1 in a replicated 3x3 Latin square. After adaptation to the respective diets, the cattle were fasted and then overfed to simulate a drastic intake fluctuation. The L diet was fermented more rapidly than the H diet, resulting in greater ruminal pH depression (P<.10) following overconsumption. Under the conditions of this experiment, flaking milo more intensively than 28 lb/bu (58.7% starch gelatinization) resulted in decreased consumption, lower mill efficiency, and increased propensity for acidosis in finishing steers.
Effect Of Physical Form And Level Of Alfalfa In Corn-Based Diets On Performance Of Finishing Steers, B.J. Healy, Robert T. Brandt Jr., S.M. Gramlich
Effect Of Physical Form And Level Of Alfalfa In Corn-Based Diets On Performance Of Finishing Steers, B.J. Healy, Robert T. Brandt Jr., S.M. Gramlich
Kansas Agricultural Experiment Station Research Reports
One hundred forty-four crossbred steers (850 lb) were used to evaluate the effects of physical form and level of average (15% CP) quality alfalfa on performance and carcass traits. Alfalfa hay had been harvested from a common field and alternate bales were either chopped (3 to 4 in. length) or ground and pelleted (3/8 in. pellet). No interactions between alfalfa form and level were detected. Daily gain, daily intake, feed efficiency, and carcass traits were similar for steers fed both alfalfa forms. Steers fed 10% alfalfa consumed 7.2% more feed (P<.03) than those fed 5%. Steers fed 5% alfalfa had marginally improved feed efficiencies, whereas those fed 10% had somewhat greater daily gains. Carcass traits were not affected by level of alfalfa. The incidence and severity of liver abscesses were greater (P<.05) for steers fed 5% alfalfa, indicative of a higher degree of acidosis than for steers fed 10% alfalfa.
Ultrasound-Measured Ribeye Area Epd For Brangus Cattle, R.R. Schalles, J.B. Glaze, R. Mallen-Spinzi, K.M. Andries, C.J. Rost, M.Z. Johnson, W. Olson, Michael E. Dikeman
Ultrasound-Measured Ribeye Area Epd For Brangus Cattle, R.R. Schalles, J.B. Glaze, R. Mallen-Spinzi, K.M. Andries, C.J. Rost, M.Z. Johnson, W. Olson, Michael E. Dikeman
Kansas Agricultural Experiment Station Research Reports
Ultrasound-measured ribeye area (REA) expected progeny differences (EPD) were calculated for 2974 Brangus cattle. Carcass data were collected from 168 steer progeny sired by eight bulls with ultrasound-measured ribeye area EPDs. A heritability estimate of .40 for ultrasound-measured REA and a 2.82 sq. in. range in genetic differences in ultrasound- measured REAs in this population indicate considerable opportunity to make genetic change in this trait. The regression of progeny average carcass REA on the sire's ultrasound measured ribeye area EPD indicated that for each square inch change in the EPD, the carcass REA of their progeny changed by .69 sq. …
Relationship Between Expected Progeny Differences (Epd) And Performance Of Angus And Simmental Bulls In Central Bull Tests, D.D. Simms
Kansas Agricultural Experiment Station Research Reports
The performance of bulls (n = 656 for Angus and n = 1343 for Simmental) at the Beloit and Potwin bulls tests from 1989 to 1992 were compared to their expected progeny differences (EPDs). In general, correlations between on-test ADG and weaning and yearling EPD were low for both breeds. However, the correlations between actual yearling weight and yearling EPD was moderate for Angus. Differences in actual yearling weight were 2.80 and 1.71 pounds (for Angus and Simmental, respectively) for each pound of difference in yearling weight EPD, which is close to the 2.0 pound difference expected. Thus, although the …
Effect Of Diet Energy Content And Level Of Restriction On Performance, Nutrient Digestibility, And Puberty In Replacement Beef Heifers, Robert T. Brandt Jr., Ronald V. Pope, Jeffrey S. Stevenson
Effect Of Diet Energy Content And Level Of Restriction On Performance, Nutrient Digestibility, And Puberty In Replacement Beef Heifers, Robert T. Brandt Jr., Ronald V. Pope, Jeffrey S. Stevenson
Kansas Agricultural Experiment Station Research Reports
Eighty Angus x Hereford crossbred weanling heifers (548 lb) were used in a 2x2 factorial experiment to evaluate dietary energy concentration (NEg .51 vs .61 Mcal/lb) and intake restriction (to produce 1.25 and 2.0 lb/d gain). Intake of the diets (corn - corn silage based; 14% CP) was adjusted every 2 weeks. Steer counterparts to the heifers were used in a 2x3 factorially arranged digestion experiment using the same treatments with an additional ad libitum intake level. There were no interactions between energy content and level of restriction. Heifers fed the higher energy diet maintained equal daily gain on 9.7% …
Factors Influencing The Price Paid For Bulls At Central Test Stations In Kansas From 1988-1992, D.D. Simms, J.R. Schwenke
Factors Influencing The Price Paid For Bulls At Central Test Stations In Kansas From 1988-1992, D.D. Simms, J.R. Schwenke
Kansas Agricultural Experiment Station Research Reports
Results of 13 sales of Angus (n=185) and Simmental (n=544) bulls at central bull tests in Kansas from 1988 through 1992 were analyzed to determine the relationship between performance and the price received. The Kansas bull test index (based 50% on weight per- day-of-age and 50% on test ADG) was the most significant single factor determining price in both Angus and Simmental bulls. Birth weight, final weight, and frame score were other major contributors to price in Angus bulls, whereas weaning weight ratio, birth weight, and being polled were important in Simmental bulls. Expected progeny differences made small but significant …
Gastrointestinal Thiaminase Vs. Ration Changes, H.W. Soita, B.E. Brent
Gastrointestinal Thiaminase Vs. Ration Changes, H.W. Soita, B.E. Brent
Kansas Agricultural Experiment Station Research Reports
High levels of the thiamin-destroying enzyme, thiaminase I, were found in the feces of 3 of 50 apparently healthy dairy cows. All high fecal thiaminase I levels returned to normal within 3 weeks, indicating that thiaminase I occurs in "spikes" rather than continuing at elevated levels. All cows sampled had some thiaminase I, but the upper end of the "normal" range in feces was about 3.5 μmol/min/l. Thiaminase I levels were higher in the first than in subsequent lactations. When spikes in thiaminase I activity occurred, they were concentrated within about 20 days of calving and of the associated change …
Implant Comparisons In Feedlot Steers And Heifers, T.P. Eck, L.R. Corah
Implant Comparisons In Feedlot Steers And Heifers, T.P. Eck, L.R. Corah
Kansas Agricultural Experiment Station Research Reports
Feedlot performance of steers implanted with Compudose®, Implus-S®, or Synovex-S® was very similar. No statistical differences were detected among treatments. However, implanted steers gained an average of 4% faster than nonimplanted controls. Carcass quality was virtually unaffected by treatment. Implanting feedlot heifers with Synovex- H®, Implus-H®, or Implus-H® plus Finaplix- H® increased daily gain compared to non-implanted heifers. Implanting improved gain and feed efficiency by 13 and 7.1%, respectively, compared to controls. Differences in carcass characteristics probably were due to the increased weight gain associated with implants. Percentage of carcasses grading Choice was not impacted by treatment.
Effect Of Zinpro 100® In A Mineral Mixture On Gain And Incidence Of Footrot In Steers Grazing Native Grass Pastures, F.K. Brazle
Effect Of Zinpro 100® In A Mineral Mixture On Gain And Incidence Of Footrot In Steers Grazing Native Grass Pastures, F.K. Brazle
Kansas Agricultural Experiment Station Research Reports
In a 3-year study, crossbred steers averaging 585 lb were allotted to groups given either a control or zinc methionine-supplemented mineral mixture while grazing burned native pastures in early summer. The steers were monitored for weight gain and incidence of footrot. The addition of 100 lb Zinpro 100® (50% zinc methionine) per ton of free-choice mineral mixture improved (P<.06) steer daily gain .08 lb. and reduced the incidence of footrot 55% (5.38 vs. 2.45%; P<.06). The gain benefit could not be attributed entirely to reduced footrot, but appeared to also have a nutritional basis.
Comparison Of Synovex-S® And Two Levels Of Revalor-S® In Heavy-Weight Holstein Steers, Gerry L. Kuhl, D.D. Simms, Dale A. Blasi, Curtis L. Kastner
Comparison Of Synovex-S® And Two Levels Of Revalor-S® In Heavy-Weight Holstein Steers, Gerry L. Kuhl, D.D. Simms, Dale A. Blasi, Curtis L. Kastner
Kansas Agricultural Experiment Station Research Reports
In two field trials, 434 Holstein steers averaging 849 lbs were assigned randomly to three single implant treatments: 1) Synovex- S®, 2) Revalor®-S 120 (120 mg trenbolone acetate (TBA) + 24 mg estradiol), and 3) Revalor®-S 140 (140 mg TBA + 28 mg estradiol). Revalor-implanted steers gained .05 to .10 lb per day faster, but this improvement was not statistically significant (P>.05). Both Revalor-implanted groups produced trimmer carcasses with less (P<.05) backfat than Synovex steers. All other carcass characteristics and beef sensory properties, including taste panel evaluations of tenderness, juiciness, and flavor, were not influenced by implant used.
Use Of Cystorelin® And Artificial Insemination In Repeat-Breeding Beef Heifers After Estrous Synchronization, J.P. Holz, P.L. Houghton, M.F. Spire
Use Of Cystorelin® And Artificial Insemination In Repeat-Breeding Beef Heifers After Estrous Synchronization, J.P. Holz, P.L. Houghton, M.F. Spire
Kansas Agricultural Experiment Station Research Reports
Gonadotropin-releasing hormone (GnRH) was administered to a group of 13- to 14- month-old Angus and Angus crossbred repeat-breeding heifers at the time of the second or third artificial insemination to determine its effect on conception rates. Little benefit was derived from the use of GnRH at either second or third service in highly developed repeat-breeding heifers.
A Laboratory System For Modeling Hay Storage, W.K. Coblentz, J.O. Fritz, K.K. Bolsen
A Laboratory System For Modeling Hay Storage, W.K. Coblentz, J.O. Fritz, K.K. Bolsen
Kansas Agricultural Experiment Station Research Reports
A simple system is described that uses a hinged metal baling unit and a hydraulic press to make 4.0 x 4.3 x 5.3 inch wire-tied, laboratory- scale, hay bales. A comparison of densities of conventional, small, alfalfa bales (15x18x37 inches) and laboratory bales was made over a wide range of moisture levels (15 to 36%) and conventional bale densities (10 to 25 lb/ft3). Laboratory bale densities were regressed against conventional bale densities and agreement was excellent. The system is inexpensive to build and easy to use and can be reproduced easily.
Comparison Of Conventional And Laboratory-Scale Alfalfa Hay Bales In Small Haystacks, W.K. Coblentz, J.O. Fritz, K.K. Bolsen
Comparison Of Conventional And Laboratory-Scale Alfalfa Hay Bales In Small Haystacks, W.K. Coblentz, J.O. Fritz, K.K. Bolsen
Kansas Agricultural Experiment Station Research Reports
A system for making laboratory-scale alfalfa hay bales was evaluated in two trials. In the first, conventional rectangular and laboratory-scale bales were made at each of seven different combinations of moisture and density. Laboratory bales were incubated between two parent conventional bales of identical moisture content and bale density. Laboratory bales remained different (P<.05) from parent conventional bales for most temperature-related storage traits. Agreement between bale types was better for most quality traits. To achieve closer agreement between bale types, a second experiment was conducted in which the laboratory bales were made at 1.0, 1.3, 1.6, and 2.0 times the density of the conventional bales. Agreement improved between laboratory bales of higher densities and conventional bales for most temperature traits. High-density laboratory bales had significantly greater acid detergent insoluble nitrogen values than conventional bales, particularly at the highest moisture level. These results implicate bale density as an important factor in heat damage to proteins in alfalfa hay.
Storage Losses In Net-Wrapped, Large, Round Bales Of Alfalfa Hay, R.K. Taylor, D.L. Kueck, C.E. Addison, Dale A. Blasi, Thomas Mark Maxwell, James P. Shroyer
Storage Losses In Net-Wrapped, Large, Round Bales Of Alfalfa Hay, R.K. Taylor, D.L. Kueck, C.E. Addison, Dale A. Blasi, Thomas Mark Maxwell, James P. Shroyer
Kansas Agricultural Experiment Station Research Reports
Net- and twine-wrapped alfalfa hay bales were stored from July, 1990 to April, 1991 in three Kansas counties (Reno, Saline, and Stafford). Dry matter losses and changes in acid detergent fiber and acid detergent insoluble nitrogen levels during storage were not significantly different between net- and twine-wrapped bales. Although a significant difference in dry matter recovery between inside and outside bale storage occurred in Saline County, it was not considered important because all recoveries were high. No significant differences in ADF or ADIN increases were found between initial core samples and samples from the outer 4 in. of the bales …
The Relationships Of Color To Performance And Carcass Traits In Cattle, K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman
The Relationships Of Color To Performance And Carcass Traits In Cattle, K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman
Kansas Agricultural Experiment Station Research Reports
The effects of primary color (black, red, or white) on performance and carcass characteristics of 253 cross-bred calves were evaluated. The only effect of color was that white calves had lighter birth weights than red calves, which was probably the result of the maternal influence of the Brahman breed. White calves also had a lower carcass yield grade than red calves. No other effects of color on performance or carcass traits were found. It can be concluded that knowledge of breed and expected progeny differences (EPD) of the sire within the breed are more accurate methods of predicting the future …