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Causes Of Diarrhea, Pneumonia, And Abortion In 1991 Cattle Submissions To The Ksu Veterinary Diagnostic Laboratory (1992), R.K. Frank, M.W. Vorhies, M. M. Chengappa
Causes Of Diarrhea, Pneumonia, And Abortion In 1991 Cattle Submissions To The Ksu Veterinary Diagnostic Laboratory (1992), R.K. Frank, M.W. Vorhies, M. M. Chengappa
Kansas Agricultural Experiment Station Research Reports
Causes of diarrhea, pneumonia, and abortion in Kansas cattle submissions to the Kansas State University Veterinary Diagnostic Laboratory during 1991 were summarized. Antimicrobial susceptibility results for Pasteurella haemolytica, Pasteurella multocida, Hemophilus somnus, and Salmonella spp., the common causes of pneumonia and/or diarrhea in cattle with increasing antibiotic resistance patterns, were also summarized. The most commonly diagnosed causes of diarrhea in young calves (under 1 month of age) were coronavirus, Escherichia coli, and Salmonella. The three most common causes of diarrhea in 1 to 18 month-old cattle were BVD virus, coccidia, and Salmonella. Most respiratory submissions were 7- to 18-month-old cattle. …
Effect Of Supplemental Grain Sorghum And Overseeding With Ladino Clover On Grazing And Subsequent Feedlot Performance Of Steers Early-Intensively Grazed On Acremonium Coenophialum - Infected Tall Fescue Pastures (1992), K.P. Coffey, Joseph L. Moyer, Lyle W. Lomas, F.K. Brazle
Effect Of Supplemental Grain Sorghum And Overseeding With Ladino Clover On Grazing And Subsequent Feedlot Performance Of Steers Early-Intensively Grazed On Acremonium Coenophialum - Infected Tall Fescue Pastures (1992), K.P. Coffey, Joseph L. Moyer, Lyle W. Lomas, F.K. Brazle
Kansas Agricultural Experiment Station Research Reports
Eighty mixed breed steers (avg. wt. 560 lb.) were used to evaluate the effect on grazing gain and subsequent feedlot performance of different management options for steers early-intensively grazing Acremonium coenophialuminfected tall fescue pastures. Steers were allotted to pastures of infected fescue pastures or infected fescue overseeded with ladino clover and received no supplement or were offered grain sorghum at .25% of their body weight. Neither supplementation nor overseeding affected grazing or feedlot performance. However, grain supplementation on overseeded pastures reduced subsequent feedlot feed efficiency (P<.10). These management options did not substantially affect grazing or subsequent feedlot performance by steers early-intensively grazing infected fescue pastures.
Production And Marketing Factors Influencing Fed Cattle Prices (1992), J. Mintert, R. Jones, F. Brazle, Ted C. Schroeder
Production And Marketing Factors Influencing Fed Cattle Prices (1992), J. Mintert, R. Jones, F. Brazle, Ted C. Schroeder
Kansas Agricultural Experiment Station Research Reports
An analysis of more than 1400 pens of cattle marketed during 1990 examined the influence of several cattle traits and marketing factors on fed cattle prices. Cattle quality grade had an important impact on packer bids and feedyard asking prices. However, both feedyard asking and packer purchase prices reflected less than 25%, on average, of estimated wholesale value differentials. Other factors, including estimated dressing percentage, finish uniformity, cattle weight, number of head purchased, presence of heiferettes, and cattle type had significant price impacts. Feedyards generally received what they asked for cattle; 65% of the pens sold for their asking prices. …
Effect Of 1174® Silage Inoculant On The Fermentation Of Corn Silages (1992), K.K. Bolsen, C. Lin, B.E. Brent, J.E. Bradford, A.M. Feyerherm
Effect Of 1174® Silage Inoculant On The Fermentation Of Corn Silages (1992), K.K. Bolsen, C. Lin, B.E. Brent, J.E. Bradford, A.M. Feyerherm
Kansas Agricultural Experiment Station Research Reports
The effect of 1174® Silage Inoculant on the ensiling process was studied using three Pioneer corn hybrids. All hybrids fermented rapidly, and 1174 did not significantly influence any of the fermentation characteristics during the 120 days. The epiphytic lactic acid bacteria (LAB) counts on the chopped corn plants were high; 14 times greater than the numbers of LAB provided by the inoculant. Although during fermentation, statistically significant differences occurred among the hybrids for fermentation end-products, no observed trends suggested that hybrid effects were real.
Effects Of Biomate® Inoculant And Dextrose On The Fermentation Of Alfalfa Silages (1992), C. Lin, K.K. Bolsen, J.E. Bradford, B.E. Brent, A.M. Feyerherm, W.R. Aimutis
Effects Of Biomate® Inoculant And Dextrose On The Fermentation Of Alfalfa Silages (1992), C. Lin, K.K. Bolsen, J.E. Bradford, B.E. Brent, A.M. Feyerherm, W.R. Aimutis
Kansas Agricultural Experiment Station Research Reports
This study documented once again that ensiling alfalfa is difficult and unpredictable. Adding 2% dextrose or Biomate® inoculant alone or in combination had little influence on the ensiling process but did improve fermentation efficiency somewhat. The pre-ensiling characteristics (i.e., dry matter (DM) and water soluble carbohydrate (WSC) values, buffering capacity, and epiphytic microflora) at the different cuttings and stages of maturity undoubtedly influenced the effectiveness of the two additives. Apparently, alfalfa often has too little WSC and too much buffering capacity to produce adequately preserved silage, especially when ensiled at a low DM content (less than 30 to 34%).
Rate And Extent Of Losses From Top Spoilage In Pilot-Scale, Horizontal Silos, J.T. Dickerson, K.K. Bolsen, B.E. Brent, C. Lin, John E. Boyer
Rate And Extent Of Losses From Top Spoilage In Pilot-Scale, Horizontal Silos, J.T. Dickerson, K.K. Bolsen, B.E. Brent, C. Lin, John E. Boyer
Kansas Agricultural Experiment Station Research Reports
Corn and forage sorghum silages were stored in pilot-scale silos for 180 days, and dry matter (DM) and organic matter (OM) recoveries and estimated OM recovery were measured at three depths within the top 3 ft. of silage. The unsealed silages deteriorated badly in the top 12 in. Actual DM and OM losses in the top 24 in. were higher in unsealed than sealed silages at each successive storage period (7 to 180 days). The unsealed silages began to deteriorate immediately in the top 12 in. in both crops, and deterioration progressed to the second 12 in. by 90 days …
Effects Of Interactions Between Aspergillus Oryzae Extract (Amaferm) And Antimicrobial Compounds On The Growth Of Ruminal Bacteria (1992), A.A. Beharka, Tiruvoor G. Nagaraja
Effects Of Interactions Between Aspergillus Oryzae Extract (Amaferm) And Antimicrobial Compounds On The Growth Of Ruminal Bacteria (1992), A.A. Beharka, Tiruvoor G. Nagaraja
Kansas Agricultural Experiment Station Research Reports
The effect of Amaferm, with or without antimicrobial compounds, was determined on the growth rate of pure cultures of predominant ruminal bacteria. Adding Amaferm to media containing chlortetracyline or neomycin tended to diminish the negative effects of those compounds on the growth rate of some ruminal bacteria, even when they had shown no positive response to Amaferm alone. However, adding Amaferm to media containing tylosin decreased the growth rate of Selenomonas ruminantium D. These results indicate that Amaferm interacts both positively and negatively with certain antimicrobial compounds.
The Effects Of Slow-Release Copper Boluses On Cow Reproductive Performance And Calf Growth (1992), J.D. Arthington, Robert L. Larson, L.R. Corah
The Effects Of Slow-Release Copper Boluses On Cow Reproductive Performance And Calf Growth (1992), J.D. Arthington, Robert L. Larson, L.R. Corah
Kansas Agricultural Experiment Station Research Reports
Two Kansas cow/calf herds known to be copper deficient were utilized to examine the effect of slow-release copper boluses. In herd I, 34 spring-calving cows and calves were divided into a treated and control group at 3-4 months following calving. In herd II, 1106 fall-calving cows and 172 calves were divided into a treated and control group at 3-4 months following calving. In both herds, cow liver and serum samples were collected and assayed for copper and iron. Cows in herd II were also examined for various reproductive parameters. Calf ADG was monitored over a 42-day treatment period in herd …
Use Of Low-Level Grain Supplementation In An Intensive-Early Stocking Program: Influence On Daily Gain And Forage Production (1992), R.C. Cochran, E.S. Vanzant, Robert T. Brandt Jr., Clenton E. Owensby, Lisa M. Auen
Use Of Low-Level Grain Supplementation In An Intensive-Early Stocking Program: Influence On Daily Gain And Forage Production (1992), R.C. Cochran, E.S. Vanzant, Robert T. Brandt Jr., Clenton E. Owensby, Lisa M. Auen
Kansas Agricultural Experiment Station Research Reports
A 4-year experiment was conducted to evaluate the effect of increasing amounts of grain supplementation on steer gains and forage production in pastures managed under an intensive-early stocking system. Average daily gain tended to increase in direct proportion to increasing level of sorghum grain supplementation (2.19, 2.43 and 2.59 lb/day for the control, 2 and 4 lb/day supplement levels, respectively). The amount of grass remaining in the pastures at the end of the grazing season (approximately July 15) also increased in direct proportion to increasing sorghum grain supplementation. Forage remaining in the pastures at the end of the growing season …
Synchronization Of Estrus In Yearling Beef Heifers With The Mga®/Prostaglandin System: I. Effect On Inducement Of Puberty And Conception Rates (1992), L.R. Corah, J.R. Yaeger, J.C. Whittier, J.C. Meiske, D.J. Patterson, K. C. Olson
Synchronization Of Estrus In Yearling Beef Heifers With The Mga®/Prostaglandin System: I. Effect On Inducement Of Puberty And Conception Rates (1992), L.R. Corah, J.R. Yaeger, J.C. Whittier, J.C. Meiske, D.J. Patterson, K. C. Olson
Kansas Agricultural Experiment Station Research Reports
We evaluated the estrous response and fertility of yearling beef heifers after treatment with melengestrol acetate (MGA) and prostaglandin F2" (PG). The 304 heifers, at three locations, were allotted to two treatments: nonsynchronized controls and those receiving .5 mg MGA per head daily for 14 days followed by a 25 mg PG injection 17 days after the end of MGA feeding (MGA/PG). Heifers in the control and MGA/PG groups were artificially inseminated 12 hours after observed estrus for 21 days or 6 days after PG, respectively. Conception rate at first service and overall pregnancy rate did not differ (P>.10) …
Synchronization Of Estrus In Yearling Beef Heifers With The Melengestrol Acetate®/Prostaglandin F2a System: Ii. Timed Insemination (1992), Robert L. Larson, L.R. Corah, S.V. Viker
Synchronization Of Estrus In Yearling Beef Heifers With The Melengestrol Acetate®/Prostaglandin F2a System: Ii. Timed Insemination (1992), Robert L. Larson, L.R. Corah, S.V. Viker
Kansas Agricultural Experiment Station Research Reports
Inseminating heifers 72 hr after the PG injection in the melengestrol acetate/ prostaglandin F (MGA®/PG) estrous synchronization system, without regard to behavioral estrus, tended to improve (P=.2) the percent of heifers pregnant to artificial insemination (AI) when compared to synchronized heifers bred 12 h after they were first detected in estrus. In the timed inseminated treatment, heifers exhibiting behavioral estrus 48 to 72 h after PG tended to have a higher (P<.12) conception rate to AI than heifers showing estrus within 48 h after PG. For situations in which the number of heifers conceiving to AI is more economically important than first service conception rate, or when labor restrictions make estrous detection impossible, timed insemination at 72 h after PG in the MGA/PG system shows promise as a management option.
Synchronization Of Estrus In Yearling Beef Heifers With The Mga®/Prostaglandin F2Α System: Iii. Timed Insemination After 72 Hours Of Estrous Detection (1992), Robert L. Larson, L.R. Corah
Synchronization Of Estrus In Yearling Beef Heifers With The Mga®/Prostaglandin F2Α System: Iii. Timed Insemination After 72 Hours Of Estrous Detection (1992), Robert L. Larson, L.R. Corah
Kansas Agricultural Experiment Station Research Reports
The percentage of heifers conceiving to artificial insemination (AI) following melengestrol acetate/prostaglandin F2"(MGA®/PG) estrous synchronization can be increased by mass insemination of all heifers not showing estrus by 72 h after PG. Inseminating at 12 h after estrus detection all heifers showing estrus within 72 h after PG; then inseminating those not detected in estrus by 72 h after PG as a group increased the proportion of heifers conceiving to AI by 10.8%.
Influence Of Source And Amount Of Dietary Protein On The Performance And Reproductive Function Of First-Calf Heifers (1992), W.C. Rusche, R.C. Cochran, L.R. Corah, Jeffrey S. Stevenson, D.L. Harmon
Influence Of Source And Amount Of Dietary Protein On The Performance And Reproductive Function Of First-Calf Heifers (1992), W.C. Rusche, R.C. Cochran, L.R. Corah, Jeffrey S. Stevenson, D.L. Harmon
Kansas Agricultural Experiment Station Research Reports
Increasing the amount of dietary protein above the NRC requirement increased weight gain of nursing first-calf heifers. Feeding a protein source with higher ruminal escape potential and increasing protein in the diet both improved calf gains. No significant changes in reproductive function or milk production were observed from either source or amount of dietary protein.
Effects Of Niacin And Aspirin On Serum Prolactin And Body Temperature Of Heifers Fed Endophyte-Infected Tall Fescue (1992), Robert L. Larson, L.R. Corah
Effects Of Niacin And Aspirin On Serum Prolactin And Body Temperature Of Heifers Fed Endophyte-Infected Tall Fescue (1992), Robert L. Larson, L.R. Corah
Kansas Agricultural Experiment Station Research Reports
Feeding niacin to cattle consuming endophyte (Acremonium coenophialum)-infected tall fescue elevated their serum prolactin concentrations to levels similar to those of heifers fed hay containing a low content of endophyte. Heifers fed high-endophyte hay, with or without aspirin, had lower serum prolactin concentrations than heifers fed low-endophyte fescue hay (P<.1). Compared to control cattle fed high-endophyte hay, neither niacin nor aspirin lowered morning or evening body temperatures during the period August 16 to September 4. Feeding aspirin did not lower body temperature or increase prolactin concentration in animals fed high-endophyte fescue forage. Some benefit was seen when niacin was added to the diet, as evidenced by higher (P<.01) prolactin concentrations; however body temperature was not lowered.
Factors Affecting Variability In Feedlot Steer Profits (1992), Michael R. Langemeier, J. Mintert, Ted C. Schroeder
Factors Affecting Variability In Feedlot Steer Profits (1992), Michael R. Langemeier, J. Mintert, Ted C. Schroeder
Kansas Agricultural Experiment Station Research Reports
This study examined the relative importance of price and animal performance factors on cattle finishing profitability. Using data from a single feedlot, sale prices, feeder prices, and corn prices explained 90 to 95% of the variation in steer profits. About 50% of the variability was explained by fed cattle prices alone. Because sale, feeder, and corn prices have a large impact on profits per head, cattle feeders should attempt to manage the risks associated with these three factors.
Effect Of Presponse® On The Gain And Health Of Long-Hauled, Newly Arrived Calves (1992), F.K. Brazle
Effect Of Presponse® On The Gain And Health Of Long-Hauled, Newly Arrived Calves (1992), F.K. Brazle
Kansas Agricultural Experiment Station Research Reports
Five hundred mixed-breed steer and bull calves (246 lbs) were divided into two treatment groups, with one group receiving a new Pasteurella haemolytica vaccine (Presponse®) at arrival. There was no difference between groups in terms of gain, mortality, or morbidity during the 32-day receiving study. The Presponse group required fewer (P<.09) medication days per animal purchased, resulting in $1.68 less drug cost per head than the control group.
Record-Keeping Systems For Beef Safety And Feedlot Health (1992), C.D. Cranwell, D.D. Simms
Record-Keeping Systems For Beef Safety And Feedlot Health (1992), C.D. Cranwell, D.D. Simms
Kansas Agricultural Experiment Station Research Reports
Three hundred nine feedlots were mailed questionnaires to ascertain the types of recordkeeping systems currently being used to monitor health programs and FDA-specified treatment withdrawal times. Microcomputer systems were of special interest. Approximately one third of the feedlots responded. A majority with a one-time feeding capacity of more than 10,000 head were using a microcomputer record-keeping system, whereas most of those with fewer than 10,000 head used a manual, paper-based system. Those feedlots using computerized record-keeping systems had purchased their software package from one of five companies. Managers felt these software packages were adequate for billing customers, monitoring pharmaceutical inventory …
Performance Of Rat-Tail Calves (1992), R.R. Schalles, Douglas A. Powell, L.V. Cundiff, J.B. Glaze
Performance Of Rat-Tail Calves (1992), R.R. Schalles, Douglas A. Powell, L.V. Cundiff, J.B. Glaze
Kansas Agricultural Experiment Station Research Reports
The rat-tail syndrome occurs in a small percentage of calves produced by crossing Continental breeds of cattle with Angus or Holstein. These calves are characterized by short, curly, malformed, sometimes sparse body hair and an abnormal tail switch. The performance of 43 rat-tail calves was compared to that of 570 normal calves of the same breeding and contemporary groups. All rat-tail calves were sired by Simmental bulls and were from cows with various percentages of Angus breeding. As the percentage of Angus increased, the frequency of rat-tail calves increased. The rat-tail condition had no effect on birth weight, weaning weight, …
Losses From Top Spoilage In Horizontal Silos In Western Kansas (1992), J.T. Dickerson, G. Ashbell, K.K. Bolsen, B.E. Brent, L. Pfaff, Y. Niwa
Losses From Top Spoilage In Horizontal Silos In Western Kansas (1992), J.T. Dickerson, G. Ashbell, K.K. Bolsen, B.E. Brent, L. Pfaff, Y. Niwa
Kansas Agricultural Experiment Station Research Reports
The top 3 ft. of silage from each of 30 horizontal silos in western Kansas was sampled at three locations across the width of the silo for 2 consecutive years (1990 and 1991). Ninety-five percent of the silages were either corn or forage sorghum, and only 22 percent of the silos were sealed with polyethylene sheeting. Losses of organic matter (OM) from spoilage were estimated by using ash content as an internal marker. Sealing silos dramatically reduced the estimated spoilage losses in the top 3 ft. All silages had greater estimated spoilage losses in the top 18 in. in 1991 …
Losses From Top Spoilage In Corn And Forage Sorghum Silages In Horizontal Silos (1992), J.T. Dickerson, K.K. Bolsen, B.E. Brent, C. Lin
Losses From Top Spoilage In Corn And Forage Sorghum Silages In Horizontal Silos (1992), J.T. Dickerson, K.K. Bolsen, B.E. Brent, C. Lin
Kansas Agricultural Experiment Station Research Reports
Corn and forage sorghum silages were stored in small (simulated), farm-scale, bunker silos for 180 days, and dry matter (DM) and organic matter (OM) losses; fermentation characteristics; and temperatures were measured at 10, 20, and 30 inches from the original silage surface. Sealing the exposed surface significantly increased DM and OM recoveries in both crops, regardless of depth. Immediate sealing preserved more DM and OM than delayed sealing, particularly at the 10-in. depth. The unsealed silages from both crops maintained dramatically higher temperatures within the top 3 ft. than sealed silages. As expected, the unsealed silages deteriorated completely at 10- …
Effects Of Estradiol Or An Estradiol-Trenbolone Acetate Reimplant Scheme And Time On Feed On Performance And Carcass Traits Of Finishing Steers (1992), Robert T. Brandt Jr., Michael E. Dikeman, Sally L. Stroda
Effects Of Estradiol Or An Estradiol-Trenbolone Acetate Reimplant Scheme And Time On Feed On Performance And Carcass Traits Of Finishing Steers (1992), Robert T. Brandt Jr., Michael E. Dikeman, Sally L. Stroda
Kansas Agricultural Experiment Station Research Reports
Two hundred eighty-eight predominantly British and British crossbred steers (702 lb) were used in a 2x3 factorially arranged experiment. Main effect factors were reimplant scheme [estradiol (E2) vs estradiol plus trenbolone acetate (E2 + TBA)] and time on feed (111, 125 or 139 days). The initial slaughter occurred when 65 to 70% of all steers were estimated to grade low Choice. No interactions occurred for any variable measured. Reimplanting 57 days after the initial implant with E2 + TBA increased overall daily gain 6.9% (P<.003) and feed efficiency 4.9% (P<.005). Feeding steers for an additional 14 or 28 days resulted in linear decreases in overall daily gain (P<.005) and feed efficiency (P<.0004). Reimplanting with E2 + TBA increased (P<.001) carcass weight but did not reduce marbling score or percent Choice carcasses. Feeding steers for an additional 14 or 28 days resulted in linear increases (P<.0001) in hot carcass weight, ribeye area, adjusted backfat (P<.004), and skeletal maturity (P<.0005). Additional days on feed increased dressing percentage (P<.002) and marbling score (P<.05) curvilinearly and tended (P=.25) to increase the percentage of carcasses grading Choice and Prime. Incidence of dark cutters was higher (P<.05) for E2 + TBA carcasses, and was very high at the first slaughter date (54 days after reimplantation). Although feeding for an additional 14 or 28 days can result in heavier live and carcass weights, higher dressing percentage, and increased marbling, poor efficiency of gain may create negative feeding margins.
A Comparison Of Beef Flavor Intensity Among Major Muscles (1992), C.F. Carmack, J.R. Schwenke, Curtis L. Kastner, Michael E. Dikeman
A Comparison Of Beef Flavor Intensity Among Major Muscles (1992), C.F. Carmack, J.R. Schwenke, Curtis L. Kastner, Michael E. Dikeman
Kansas Agricultural Experiment Station Research Reports
Twelve muscles from eight Select/Choice grade steers were evaluated for beef flavor intensity, tenderness, and juiciness. Sample steaks were cut, and evaluation was performed by a five-member professional panel. The biceps femoris ranked highest in beef flavor intensity but was not different (P>.05) from the psoas major, gluteus medius, semimembranosus, and triceps brachii (scores of 7.8, 7.5, 7.4, 7.4, and 7.3, respectively). The rectus femoris, longissimus lumborum, serratus ventralis, infraspinatus, semitendinosus, deep pectoral, and supraspinatus were less intense in beef flavor (7.1, 7.1, 7.0, 6.8, 6.8, 6.7, and 6.6, respectively). The psoas major was most tender (P.05). Muscles from …
Variation In The Quality Of Forage Grazed By Pregnant/Lactating Beef Cows At Key Periods In The Year (1992), E.S. Vanzant, R.C. Cochran, T.A. Stanley
Variation In The Quality Of Forage Grazed By Pregnant/Lactating Beef Cows At Key Periods In The Year (1992), E.S. Vanzant, R.C. Cochran, T.A. Stanley
Kansas Agricultural Experiment Station Research Reports
Seven ruminal and esophageally fistulated crossbred beef cows were used to monitor changes in chemical composition of tallgrass-prairie forage selected during November of 1989 and January, March, June, and August of 1990. Quality of forage selected by beef cows was lowest during the period just before calving (cows calved in early February) but had begun to improve by the March sampling (postpartum period) and reached its peak during June sampling period (breeding season). Observed variability in the fiber and protein components of grazed forage highlights the dynamic nature of forage quality and emphasizes the importance of using such information when …
Beef Empire Carcass Merit Days Index System (1992), T.H. Powell, S.D. Laudert, R.W. Lee, G. Seibert, John A. Unruh, Michael E. Dikeman
Beef Empire Carcass Merit Days Index System (1992), T.H. Powell, S.D. Laudert, R.W. Lee, G. Seibert, John A. Unruh, Michael E. Dikeman
Kansas Agricultural Experiment Station Research Reports
Kansas State University, in cooperation with the Beef Empire Days committee, developed a new beef carcass index system for 1991, incorporating yield and quality traits as indicators of carcass merit. Development of the system considered current industry and consumer demands in a critical evaluation of final carcass ranking. The index starts from 100 points and applies positive and negative adjustments for hot carcass weight; ribeye area; adjusted 12th rib fat thickness; percent kidney, pelvic, and heart fat; and quality grade. The index was first used in 1991.
Influence Of Frequency Of Energy Supplementation On Utilization Of Early-Summer, Tallgrass Prairie Forage (1992), J.L. Beaty, R.C. Cochran, B.A. Lintzenich, E.S. Vanzant
Influence Of Frequency Of Energy Supplementation On Utilization Of Early-Summer, Tallgrass Prairie Forage (1992), J.L. Beaty, R.C. Cochran, B.A. Lintzenich, E.S. Vanzant
Kansas Agricultural Experiment Station Research Reports
Fifteen ruminally cannulated beef steers were used in a pasture supplementation experiment to determine the effects of frequency of energy supplementation on intake and digestion of tallgrass prairie forage during early to mid-summer. Steers grazed a common pasture and were assigned to the following treatments: no supplement (control); 4 lb rolled sorghum grain/head/day; 9.3 lb grain/head/3 times weekly. Steers in the two supplemented groups consumed the same amount of sorghum grain/head/week. In general, supplementation was not harmful (P =.17) to forage intake. However, providing supplement 3 times weekly tended (P =.11) to depress forage intake compared with daily supplementation. Although …
Influence Of Limited Creep Feeding On Pre- And Post-Weaning Performance Of Spring Born Calves (1992), F.K. Brazle, Gerry L. Kuhl, C.E. Binns, K.O. Zoellner, L.R. Corah, R.R. Schalles
Influence Of Limited Creep Feeding On Pre- And Post-Weaning Performance Of Spring Born Calves (1992), F.K. Brazle, Gerry L. Kuhl, C.E. Binns, K.O. Zoellner, L.R. Corah, R.R. Schalles
Kansas Agricultural Experiment Station Research Reports
Spring-born suckling beef calves were offered salt-limited creep feeds containing either high protein, high energy, or energy plus Bovatec® from August 15 to October 15 in a 3- year study. Creep feeding improved (P<.01) daily gain over controls, but no differences were attributable to creep composition. Daily creep feed consumption was somewhat less for the protein fed group, resulting in improved feed conversion compared to the energy-based supplement, with the energy plus Bovatec creep feed intermediate in efficiency. Creep feeding improved 53-day postweaning gains (P<.01). Overall, limited creep feeding boosted both pre- and postweaning performance, with no difference in gain among the three types of creep rations studied.
Effect Of Long-Acting Penicillin And Levamisole® On Gain And Health Of Stressed Calves (1992), F.K. Brazle
Effect Of Long-Acting Penicillin And Levamisole® On Gain And Health Of Stressed Calves (1992), F.K. Brazle
Kansas Agricultural Experiment Station Research Reports
Two studies were conducted to determine the effect of long-acting penicillin and/or levamisole injected at arrival or levamisole injected on day 1 and/or day 7 on the health and gain of newly received, highly stressed, light weight calves. Levamisole injected at arrival reduced (P<.05) sickness of newly arrived calves during the first 5 days. However, it did not reduce overall sickness during the receiving period. Long-acting penicillin injected at arrival did not reduce sickness, but did improve (P<.05) gain of calves during the growing period. The combination of levamisole and long-acting penicillin or the combination of levamisole on day 1 and day 7 did not reduce morbidity in these highly stressed calves.
Effect Of Feed Additives On Shipping Shrinkage Of Yearling Heifers (1992), F.K. Brazle
Effect Of Feed Additives On Shipping Shrinkage Of Yearling Heifers (1992), F.K. Brazle
Kansas Agricultural Experiment Station Research Reports
Two studies were conducted to determine the effect of feed additives on the transit shrink of yearling cattle. In Trial I, 146 mixed-breed heifers were offered a mineral mixture containing either Terramycin® or Bovatec®, or without additive while grazing native grass pastures. Shrinkage after 300 miles in transit was lower (P.05). The small shrinkage differences observed in these two trials would not justify changes in the weighing practices of feeder cattle.
Performance And Carcass Characteristics Of Cull Beef Cows Implanted With Growth Promotants And Fed A High Concentrate Ration (1992), C.D. Cranwell, D.D. Simms, J.R. Brethour, John A. Unruh
Performance And Carcass Characteristics Of Cull Beef Cows Implanted With Growth Promotants And Fed A High Concentrate Ration (1992), C.D. Cranwell, D.D. Simms, J.R. Brethour, John A. Unruh
Kansas Agricultural Experiment Station Research Reports
Open, cull beef cows fed a high concentrate ration for 28 or 56 days and implanted with Finaplix-H®, Synovex-H®, or both had improved gain and feed efficiency compared to controls (nonimplanted cows). Changes in ultrasound-measured backfat (12th rib) of implanted cows and controls were similar in both feeding periods. Marbling, fat color, and tenderness, as measured by Warner-Bratzler shear force, were not improved by feeding cows for 56 days compared to 28 days. However, lean color, dressing percent, and ribeye area were improved by feeding for 56 days. Numerical yield grade was lower (P<.05) in 28-day fed cows. Implanting with Synovex-H or Finaplix-H resulted in leaner carcasses with lower yield grades compared to controls. Ribeye area was increased by using Synovex-H compared to controls and Finaplix- H. These data indicate that the benefits in gain, feed efficiency, and carcass traits from implanting cull cows can be obtained by using either Synovex-H or Finaplix-H alone.
Comparison Of Feedlot And Carcass Characteristics Of Angus, Hereford, Brahman, Charolais, And Gelbvieh Crossbred Steers (1992), D.T. Hickok, R.R. Schalles, D.E. Franke, Michael E. Dikeman
Comparison Of Feedlot And Carcass Characteristics Of Angus, Hereford, Brahman, Charolais, And Gelbvieh Crossbred Steers (1992), D.T. Hickok, R.R. Schalles, D.E. Franke, Michael E. Dikeman
Kansas Agricultural Experiment Station Research Reports
Feedlot performance of 207 steers with various percentages of Angus, Hereford, Charolais, Brahman, and Gelbvieh breeding were compared at a constant 1) days fed, 2) adjusted carcass backfat, and 3) slaughter weight. As the percentage of Angus, Hereford, or Brahman increased, growth rate decreased, whereas increasing the percentage of Charolais increased growth rate. Increasing the percentage of Gelbvieh increased weaning weight but had little effect on post-weaning gains. Increasing percentage of Charolais increased feed conversion efficiency, whereas the other breeds were similar, except that at a constant slaughter weight, greater percentage of Hereford improved feed conversion efficiency. Increasing the percentage …