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Animal Sciences

Kansas State University Libraries

Kansas Agricultural Experiment Station Research Reports

1986

Cattlemen's Day

Articles 1 - 30 of 46

Full-Text Articles in Life Sciences

Methods Of Tenderization For Value-Added, Hot-Boned, Restructured, Pre-Cooked Roasts From Cows, H.A. Flores, Donald H. Kropf, Melvin C. Hunt, Curtis L. Kastner Jan 1986

Methods Of Tenderization For Value-Added, Hot-Boned, Restructured, Pre-Cooked Roasts From Cows, H.A. Flores, Donald H. Kropf, Melvin C. Hunt, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

Restructured, pre-cooked roasts were prepared from four hot-boned USDA Utility grade cow carcasses. Before forming the roasts, meat was either blade tenderized, manually trimmed of large connective tissue deposits, or both blade tenderized and trimmed. Control roasts received neither treatment. Although trimming minimized the negative effects of connective tissue, blade tenderization was frequently as effective, and sometimes superior, and minimized the high labor costs and shrink losses associated with manual trimming.


Heterosis In Simmental Angus Rotational-Cross Calves, L.A. Kriese, R.R. Schalles, Lyle W. Lomas Jan 1986

Heterosis In Simmental Angus Rotational-Cross Calves, L.A. Kriese, R.R. Schalles, Lyle W. Lomas

Kansas Agricultural Experiment Station Research Reports

Heterosis estimates were determined for gestation length, birth weight, and yearling weight using a two-breed rotational crossbreeding system with Angus and Simmental cattle. Heterosis for gestation length was -.3%; birth weight, 8.31%; weaning weight 5.05%, and yearling weight, 5.39%. Angus-sired calves from Simmental darns were significantly heavier at weaning and as yearlings than the reciprocal cross.


Effect Of Decoquinate On Gain And Health Of Newly-Arrived Stocker Cattle, F. Brazle Jan 1986

Effect Of Decoquinate On Gain And Health Of Newly-Arrived Stocker Cattle, F. Brazle

Kansas Agricultural Experiment Station Research Reports

Decoquinate (Deccox®), when added to the diet of newly-arrived calves, reduced (P<.05) the number of treatments required per animal in three experiments involving 551 cattle. Feed conversion was improved in two of the three experiments and average daily gain was increased (P<.05) in one experiment when Deccox® was fed. Steer calves gained faster (P<.001) and required fewer (P<.01) treatments per head than bulls calves castrated on arrival. Black, medium-framed calves required fewer (P<.05) treatments than other breed types.


Reproductive Performance Of Angus X Hereford And Brahman X Hereford Heifers Fed To Prebeeding Target Weights, D.J. Patterson, L.R. Corah, D.D. Simms, J.R. Brethour, W.R. Negus Jan 1986

Reproductive Performance Of Angus X Hereford And Brahman X Hereford Heifers Fed To Prebeeding Target Weights, D.J. Patterson, L.R. Corah, D.D. Simms, J.R. Brethour, W.R. Negus

Kansas Agricultural Experiment Station Research Reports

Heifer development as effected by nutrition was evaluated in 148 F Angus x Hereford (A x H) and 148 F Brahman x Hereford (B x H) heifers. Heifers within each breed cross were assigned to one of two energy levels and weight groups. Heifers on the low and high energy-level diets were fed to reach 55 or 65%, respectively, of their projected mature body weights by the start of spring breeding. A higher (P<.05) percentage of A x H heifers had reached puberty by the start of spring breeding; however, their average age at puberty was greater (P<.05) than that of B x H heifers. Weight at puberty, for heifers that cycled prior to the start of spring breeding, did not differ between breed groups. Weight of heifers at puberty was greater with the high-energy than with the low-energy diets. Prebreeding body condition scores of heifers on the two energy levels differed (P<.05) more among the A x H females. The A x H heifers had higher (P<.05) fall pregnancy rates than the B x H heifers (89.2 vs 71.9%). Energy level has no significant effect on fall pregnancy rate of A x H heifers, but B x H heifers on the high-energy level had a higher (P<.05) pregnancy rate than those on the low-energy diet.


Effects Of Castration, Dehorning, Frame Size, And Gut Fill On The Long-Term Performance Of Feeder Calves, F.K. Brazle, R.R. Schalles Jan 1986

Effects Of Castration, Dehorning, Frame Size, And Gut Fill On The Long-Term Performance Of Feeder Calves, F.K. Brazle, R.R. Schalles

Kansas Agricultural Experiment Station Research Reports

In two experiments, calves purchased as steers gained substantially faster than calves purchased as bulls and then castrated, during both the starting period and the subsequent growing period. Large-framed calves gained .22 lb per day faster, and small-framed calves .21 lb per day slower, than medium-framed calves. Cattle appearing gaunt at the start of the trial gained 1.33 lb per day less than those with average gut fill.


Aborting Feedlot Heifers With Alfavet® Or Bovilene®, S. Laudert, G. Boyd, Gerry L. Kuhl Jan 1986

Aborting Feedlot Heifers With Alfavet® Or Bovilene®, S. Laudert, G. Boyd, Gerry L. Kuhl

Kansas Agricultural Experiment Station Research Reports

Alfavet® (alfaprostol), an experimental prostaglandin analog for inducing abortion in feedlot heifers, was evaluated for efficacy. Abortion was induced within 8 days following injection of 5 mg alfaprostol in 45 of 51 heifers (88.2%) ranging from 40 to 150 days in gestation. Bovilene® (fenprostalene), injected at 1 mg per head resulted in abortion in 45 of 49 heifers (91.8%) of similar pregnancy status. Both products were 95-100% effective from 40 to 120 days of pregnancy, but only 75% effective from 121 to 150 days.


Effects Of Preweaning And Post Weaning Implants On Suckling, Growing, And Finishing Steer Performance, D.D. Simms, R.W. Lee, S.B. Laudert, James J. Higgins Jan 1986

Effects Of Preweaning And Post Weaning Implants On Suckling, Growing, And Finishing Steer Performance, D.D. Simms, R.W. Lee, S.B. Laudert, James J. Higgins

Kansas Agricultural Experiment Station Research Reports

One hundred and ninety-five crossbred steers were used to compare lifetime implant strategies and study the effects of implanting during the suckling period on performance in the growing and finishing periods. There were no differences in growing period gains when both groups were implanted in the suckling period and the growing period. However, steers implanted in the suckling period but not implanted in the growing period had significantly lower gains than all other treatments including controls. Steers implanted only in the growing period had better feed efficiency in the growing period than both controls and steers implanted only in the …


Comparison Of 36 Mg And 72 Mg Ralgro® For Suckling Steer Calves, D.D. Simms Jan 1986

Comparison Of 36 Mg And 72 Mg Ralgro® For Suckling Steer Calves, D.D. Simms

Kansas Agricultural Experiment Station Research Reports

In a study in which 525 Simmental-cross steer calves were assigned to five implant treatments in four trials, 72 mg Ralgro® implants failed to increase performance significantly over' conventional 36 mg implants.


Beef Cattle Systems Analysis, R.R. Schalles Jan 1986

Beef Cattle Systems Analysis, R.R. Schalles

Kansas Agricultural Experiment Station Research Reports

For cattle producers to stay in business, they must apply the business management techniques used by sophisticated non-agricultural enterprises. Among these techniques is systems analysis, in which formulas representing interrelationships between various inputs are built into a computer program. The program simulates expected results, based on available information.


Effects Of Mga And Pgf On Estrus Induction And Synchronization In Cows And Heifers, G.W. Boyd, D.J. Patterson, L.R. Corah, J.R. Brethour Jan 1986

Effects Of Mga And Pgf On Estrus Induction And Synchronization In Cows And Heifers, G.W. Boyd, D.J. Patterson, L.R. Corah, J.R. Brethour

Kansas Agricultural Experiment Station Research Reports

Three trials were conducted in the spring of 1985 to evaluate the effectiveness of MGA feeding and Prostaglandin (PGF) injection on estrus induction and synchronization. Trials 1 and 2 were both done on a Kansas ranch and involved 70 heifers and 86 cows, respectively. In both trials, all cycling and non-cycling females were fed MGA (7 days in trial 1, 9 days in trial 2) and half of the cows and heifers received a PGF injection. The estrus response was higher (P<.0l) for the cycling heifers with the combination treatment. Both treatments resulted in similar first service conception rates and both were effective in inducing estrus in noncycling heifers. Only a small percentage of the cows in trial 2 were cycling prior to the treatments and only a small percentage of the non-cycling cows responded to the MGA. In trial 3, half of the cycling heifers were fed MGA for 7 days and PGF was injected on day 7. Response to synchronization peaked 96 to 120 hr following MGA withdrawal. Among F1 Angus X Hereford heifers, the MGA-PGF treatment reduced (P<.0l) first service conception rates as compared to controls (55 vs 80%), although a reduction was not seen with F Brahman X Hereford heifers. Conversely, 45-day pregnancy rates tended to be higher among both groups of synchronized heifers (P>.05). The MGA treatment also initiated cyclicity in prepuberal females of both crosses.


The Effect Of Gnrh On Pregnancy Rates In Estrus-Synchronized Beef Heifers, M. Ferguson, L. Corah Jan 1986

The Effect Of Gnrh On Pregnancy Rates In Estrus-Synchronized Beef Heifers, M. Ferguson, L. Corah

Kansas Agricultural Experiment Station Research Reports

Injecting 100 mcg of GnRH into cycling heifers at artificial insemination following estrus synchronization with either prostaglandin or Syncro-Mate-B® did not improve first service conception rate. However, GnRH improved first service conception in Syncro-Mate-B®-treated heifers that did not exhibit estrus prior to breeding and were bred by appointment.


A Comparison Of Synovex-S® And Steer-Oid® Implants For Finishing Cattle, G. Goldy, Jack G. Riley, Ronald V. Pope Jan 1986

A Comparison Of Synovex-S® And Steer-Oid® Implants For Finishing Cattle, G. Goldy, Jack G. Riley, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

There were no significant differences in performance or carcass traits for finishing cattle implanted with either Synovex-S® or STEER-oid®. The 122-day trial used 180 steers, with each treatment having 15 replicates.


Bacteriological And Histopathological Investigations Of Liver Abscesses, K.F. Lechtenberg, H.W. Leipold, Tiruvoor G. Nagaraja Jan 1986

Bacteriological And Histopathological Investigations Of Liver Abscesses, K.F. Lechtenberg, H.W. Leipold, Tiruvoor G. Nagaraja

Kansas Agricultural Experiment Station Research Reports

Fusobacterium necrophorum was the predominant bacterial isolate from 49 liver abscesses. Biotype A tended to occur in pure infections and produced a more severe tissue reaction than biotype B, which tended to occur as a mixed infection.


Effect Of Combinations Of Rumen-Protected Methionine Plus Rumen-Protected Lysine On Performance Of Finishing Steers, G. Goldy, Jack G. Riley, Ronald V. Pope Jan 1986

Effect Of Combinations Of Rumen-Protected Methionine Plus Rumen-Protected Lysine On Performance Of Finishing Steers, G. Goldy, Jack G. Riley, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Feed efficiency for finishing steers was significantly improved (7.4%) when rumen-protected methionine and lysine were added to a finishing ration.


Effect Of Variety, Location, And Irrigation On Selected Criteria For Evaluating Wheat As A Feed For Ruminants, G. Goldy, Andrew William Lenssen, T. Walters, Jack G. Riley, Gerry L. Posler Jan 1986

Effect Of Variety, Location, And Irrigation On Selected Criteria For Evaluating Wheat As A Feed For Ruminants, G. Goldy, Andrew William Lenssen, T. Walters, Jack G. Riley, Gerry L. Posler

Kansas Agricultural Experiment Station Research Reports

There were no significant differences in in vitro digestibility between wheat varieties, but there was a trend for differences due to locations. Location differences were much wider for test weight, 1000 kernel weight, hardness score and crude protein level than variety differences. Wheat from irrigated plots had higher grain yields and crude protein content, but lower test weights, 1000 kernel weight, and hardness values than wheat from fallow plots at the same location. There were no differences in digestibilites between fallow and irrigated wheat.


Adding Fat And/Or Sodium Bicarbonate To Steer Finishing Rations That Contain Wheat, J.R. Brethour, B. Lee, Jack G. Riley Jan 1986

Adding Fat And/Or Sodium Bicarbonate To Steer Finishing Rations That Contain Wheat, J.R. Brethour, B. Lee, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

Adding .6 pound fat or .22 pound sodium bicarbonate (soda) to finishing rations containing rolled wheat significantly improved performance and appeared to increase the substitution value of wheat. Both fat and soda increased feed intake. The improved gains from adding fat corresponded to increased energy intake. However, soda seemed to enhance nutrient utilization. There was more response to fat when we fed 100 percent vs. 50 percent wheat, but feeding 100 percent wheat depressed performance, with or without fat, to unsatisfactory levels.


Comparative Nutritional Composition Of Selected Grain Sorghum Varieties, G. Goldy, T. Walters, Andrew William Lenssen, Jack G. Riley, Gerry L. Posler Jan 1986

Comparative Nutritional Composition Of Selected Grain Sorghum Varieties, G. Goldy, T. Walters, Andrew William Lenssen, Jack G. Riley, Gerry L. Posler

Kansas Agricultural Experiment Station Research Reports

For the 188 grain sorghum varieties studied, in vitro digestibilites were statistically similar, but there was a significant difference between the 12 production locations. Crude protein, calcium, and phosphorus levels indicated slight varietal differences; however, strong locational effects were evident.


The Feeding Value Of Wheat And High Moisture Sorghum Grain Fed Singly And In Combination To Finishing Steers, D. Axe, K. Bolsen, R. Lee, George M. Herron Jan 1986

The Feeding Value Of Wheat And High Moisture Sorghum Grain Fed Singly And In Combination To Finishing Steers, D. Axe, K. Bolsen, R. Lee, George M. Herron

Kansas Agricultural Experiment Station Research Reports

Wheat and high moisture sorghum grain were fed singly and in two combinations in a 121-day feedlot trial at the Garden City Branch Experiment Station. Feed efficiency improved with increasing proportions of wheat in the ration. However, rates of gain were similar for the three wheat-containing rations. Results showed that at least 33% sorghum grain can be substituted for wheat in finishing rations with little influence on performance. The combination rations produced rates of gain that were above predicted values, indicating positive associative effects.


Influence Of Ionophore Addition To High-Grain Diets On Net Nutrient Absorption, D.L. Harmon, T.B. Avery Jan 1986

Influence Of Ionophore Addition To High-Grain Diets On Net Nutrient Absorption, D.L. Harmon, T.B. Avery

Kansas Agricultural Experiment Station Research Reports

Adding ionophores to a high grain diet increased glucose absorption and decreased the transport of urea back into the gut. These changes are consistent with the antibiotic effects of these compounds. Decreased microbial activity in the gut and shifts in the pattern of absorbed nutrients may help explain the improvements in feed efficiency seen with ionophore addition.


How Stems Of Sorghum Silage Are Digested, L.H. Harbers, R.A. Schweitzer Jan 1986

How Stems Of Sorghum Silage Are Digested, L.H. Harbers, R.A. Schweitzer

Kansas Agricultural Experiment Station Research Reports

Upper and lower portions of stem from three sorghum cultivars were ensiled and then subjected to rumen fermentation. The lower stems were readily digested, whereas the upper sections were poorly utilized. Several microscopic techniques were used to help explain the difference.


Effect Of Maturity At Harvest On Yield, Composition, And Feeding Value Of Hybrid Forage Sorghum Silages, J. Dickerson, K. Bolsen, S. Hamma, J. Hoover Jan 1986

Effect Of Maturity At Harvest On Yield, Composition, And Feeding Value Of Hybrid Forage Sorghum Silages, J. Dickerson, K. Bolsen, S. Hamma, J. Hoover

Kansas Agricultural Experiment Station Research Reports

Results from three trials showed the diversity among forage sorghum hybrids for both agronomic and nutritive characteristics. Later maturing and nonheading hybrids produced silages with low dry matter (DM) contents, low pH values, high levels of fermentation acids, and low voluntary intakes. Earlier maturing and moderate grain-producing hybrids, but their silages had high DM contents and higher voluntary intakes. Stage of maturity at harvest had surprisingly little influence on silage chemical composition, intake, or digestibility.


Effect Of Maturity At Harvest On Yield And Composition Of Hybrid Grain And Forage Sorghum Silages, R. Smith, K. Bolsen, T. Walter, B. Kirch Jan 1986

Effect Of Maturity At Harvest On Yield And Composition Of Hybrid Grain And Forage Sorghum Silages, R. Smith, K. Bolsen, T. Walter, B. Kirch

Kansas Agricultural Experiment Station Research Reports

Results from two trials indicate that grain sorghums can produce high, whole-crop dry matter yields in a short time. Although grain sorghum whole-crop silage may yield less tonnage than forage sorghum, its higher crude protein and grain-to-forage ratio could more than compensate for the difference. Maximum yields, both whole-crop and grain, were obtained at late-dough maturity in both years. However, since high quality silages were made at each harvest stage, grain sorghums had a relatively long harvest season. Grain sorghums had a dry matter content suitable for ensiling over the range of maturities studied. In addition, their yield and nutrient …


Whole-Plant Grain Sorghum Silages For Growing Cattle, R. Smith, K. Bolsen, J. Hoover Jan 1986

Whole-Plant Grain Sorghum Silages For Growing Cattle, R. Smith, K. Bolsen, J. Hoover

Kansas Agricultural Experiment Station Research Reports

Four trails were conducted to determine the effects of processing (rolling before feeding, with rolls set to break 95% of the kernels) and stage of maturity at harvest on the nutritive value of whole-crop grain sorghum silages for growing cattle. Rolling mid-dough silages did not improve feeding value. However, rolling at later maturity stages increased cattle gains and feed efficiencies, with the more mature, hard-grain silages giving the greatest response. Only starch digestibility was consistently affected (increased) by processing. Silage dry matter (DM) intake tended to increase, but feed efficiencies tended to decrease with advancing maturity. Neither average daily gains …


Additive-Treated Corn Silage For Growing Cattle, K. Bolsen, R. Smith, H. Ilg, D. Axe Jan 1986

Additive-Treated Corn Silage For Growing Cattle, K. Bolsen, R. Smith, H. Ilg, D. Axe

Kansas Agricultural Experiment Station Research Reports

The response of corn silage to the additive, Silo-Best Soluble®, was not consistent for the farm silo criteria measured. Ensiling temperatures and chemical compositions were similar for control and treated silages, except for ethanol, which was lower in the treated silage. Dry matter recovery favored the treated silage in both the top and bottom halves of the silos and in buried bags. Although daily gains were similar for calves fed control and treated silages, feed conversion was slightly better for those fed control silage.


Effect Of Sodium Bicarbonate On Gains Of Stocker Cattle Fed Grain On Tall Fescue Pastures, F. Brazle Jan 1986

Effect Of Sodium Bicarbonate On Gains Of Stocker Cattle Fed Grain On Tall Fescue Pastures, F. Brazle

Kansas Agricultural Experiment Station Research Reports

Adding sodium bicarbonate to the grain supplement of steers grazing lush, low endophyte, tall fescue pasture had no effect on cattle performance.


Experimental Implant Evaluated In Grazing Yearling Steers, S. Laudert, C. Sauerwein Jan 1986

Experimental Implant Evaluated In Grazing Yearling Steers, S. Laudert, C. Sauerwein

Kansas Agricultural Experiment Station Research Reports

An experimental implant containing Beta-estradiol increased (P<.05) daily gain of grazing yearling steers by 15.5% compared to controls. Compudose implants increased (P<.01) daily gain by 13.5%. There was no gain difference between the experimental implant and Compudose.


Effect Of Rotational Grazing By Yearlings On Early-Intensive, Double-Stocked, Native Grass, F. Brazle, Gerry L. Kuhl Jan 1986

Effect Of Rotational Grazing By Yearlings On Early-Intensive, Double-Stocked, Native Grass, F. Brazle, Gerry L. Kuhl

Kansas Agricultural Experiment Station Research Reports

Continuous, early-intensive (double-stocked) grazing vs. early-intensive grazing using a two-pasture, 16 to 18-day rotation were compared in three experiments. No significant differences were found (P>.15) in daily gains of stockers or forage remaining after the 2 ½ month grazing season


A Comparison Of Selected Breed Crosses On Growth Rate During Long-Term Grazing, Jack G. Riley, Ronald V. Pope Jan 1986

A Comparison Of Selected Breed Crosses On Growth Rate During Long-Term Grazing, Jack G. Riley, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Brahman crossbred and Simmental crossbred calves gained similarly during a 312-day, native range grazing study. Longhorn crossbreds gained less than the Brahman or Simmental crosses but more than the British crossbreds, which served as controls. Most of the gain advantage was obtained during the summer portion (April 30-September 20) of the project.


Effect Of Inoculants On The Fermentation Of Wheat, Alfalfa, And Sorghum Silages, K. Bolsen, R. Smith, H. Ilg, Daniel Y.C. Fung Jan 1986

Effect Of Inoculants On The Fermentation Of Wheat, Alfalfa, And Sorghum Silages, K. Bolsen, R. Smith, H. Ilg, Daniel Y.C. Fung

Kansas Agricultural Experiment Station Research Reports

Results from three laboratory silo experiments showed that four commercial silage inoculants increased fermentation rate, particularly during the first 4 days of the ensiling process. The effects of the additives on pH drop and lactic acid production were greater in wheat and alfalfa than in forage sorghum.


Effect Of Salinomycin On Performance Of Grazing Stocker Heifers, Lyle W. Lomas Jan 1986

Effect Of Salinomycin On Performance Of Grazing Stocker Heifers, Lyle W. Lomas

Kansas Agricultural Experiment Station Research Reports

The effect of feeding 0, 25, 50, 100, or 150 mg of salinomycin per head daily on performance of stocker heifers grazing smooth bromegrass pasture was evaluated in a 126-day trial. Feeding 100 or 150 mg of salinomycin per head daily produced the fastest gain.