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Kansas Agricultural Experiment Station Research Reports

1984

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Articles 31 - 60 of 74

Full-Text Articles in Life Sciences

Lecithin Addition To Starter Pig Diets With And Without Added Fat And Whey (1984), D Van Wormer, D S. Pollmann Jan 1984

Lecithin Addition To Starter Pig Diets With And Without Added Fat And Whey (1984), D Van Wormer, D S. Pollmann

Kansas Agricultural Experiment Station Research Reports

A total of 316 crossbred weanling pigs were used in two studies to evaluate the effect of the addition of edible-grade, unbleached soy lecithin on growth in starter pig diets with and without added fat and/or dried whey. Addition of fat to a corn-soybean meal diet improved (P<.05) feed efficiency but addition of lecithin did not affect performance. When lecithin and fat were added in combination, average daily gain was less (P<.05) than for diets without added fat. This may be due to a high level of undigestible fat having a limiting effect on intake and consequently decreasing gains. A low level of lecithin (1.5%) in diets without whey gave approximately the same response as a 4% fat diet without thus making lecithin a possible fat substitute should, it be economically feasible.; Swine Day, Manhattan, KS, November 15, 1984

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Effects Of Source And Level Of Supplemental Energy On Reproductive Performance Of Sows (1984), S Christianson, G L. Allee, D S. Pollmann, Jim L. Nelssen Jan 1984

Effects Of Source And Level Of Supplemental Energy On Reproductive Performance Of Sows (1984), S Christianson, G L. Allee, D S. Pollmann, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

Three feeding trials utilizing 185 sows (149 primiparous and 36 multiparous) were conducted to evaluate the effects of feeding various levels and sources of supplemental energy during lactation and from weaning to rebreeding on sow reproductive performance. Sows fed tallow (5% or 10%) during lactation had reproductive performance similar to sows fed the basal milo-soybean meal diet. Ad libitum feed intake was not affected by the addition of tallow for either the last week of lactation or for the entire three week lactation. However, daily digestible energy (DE) intake was increased with the addition of tallow to diets. Survival rate …

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Fat In Late Gestation Sow Diets: Effects On Pig Survival And Growth (1984), G L. Allee, George A. Milliken, Jim L. Nelssen Jan 1984

Fat In Late Gestation Sow Diets: Effects On Pig Survival And Growth (1984), G L. Allee, George A. Milliken, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

An on-farm experiment was conducted utilizing 140 sows to compare the effect of feeding either fat or additional corn during late gestation on subsequent pig performance. Beginning on day 100 of gestation and until the day of farrowing, sows were fed 6 lb daily of a corn-soybean meal diet top-dressed with either 1 lb of fat or 2.25 lb of corn. Litter size was equalized within 24 hr of farrowing. Feeding fat to sows during late gestation increased (P<.05) the number of pigs weaned per litter by .4 pig compared to feeding additional corn. Sows fed supplemental fat during late gestation weaned heavier litters (P=.06) compared to sows fed extra corn. These results indicate that feeding fat during late gestation to sows with a high energy intake increased pig survival over that obtained when the same calories were provided with corn.; Swine Day, Manhattan, KS, November 15, 1984

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Successful Induction Of Estrus During Lactation For Sows Separated From Their Litters (1984), Jeffrey S. Stevenson, Duane L. Davis Jan 1984

Successful Induction Of Estrus During Lactation For Sows Separated From Their Litters (1984), Jeffrey S. Stevenson, Duane L. Davis

Kansas Agricultural Experiment Station Research Reports

Our objective was to determine the effectiveness of inducing estrus during lactation by temporarily separating the litter from the sow during the last week of lactation. Lactating sows were removed daily from their litters for either 1) 3 hr /day (n=20), 2) 6 hr /day (n=39), or 3) 12 hr /day (n=10) during the last 8 days of lactation and exposed to an intact boar for at least 1 hr during the separation period. Litters were weaned from control sows at either 2 (n=13) or 4 (n=15) weeks for comparison of intervals to estrus following complete weaning or temporary separation. …

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Effects Of Exposure To Boars And Other Gilts On The Estrous Response After Synchronization With Altrenogest (1984), Duane L. Davis, Jeffrey S. Stevenson Jan 1984

Effects Of Exposure To Boars And Other Gilts On The Estrous Response After Synchronization With Altrenogest (1984), Duane L. Davis, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Estrus was synchronized in gilts by feeding altrenogest for 18 days. All gilts were penned in gestation stalls. Beginning the day before the last altrenogest treatment and continuing until 3 days after treatment, gilts were either exposed to a boar for 2 hr /day, group-penned with other gilts for 2 hr /day, both exposed to a boar and group-penned, or given neither treatment. Boar exposure shortened the interval to estrus but group-penning had no effect. None of the treatments improved the synchrony of estrus.; Swine Day, Manhattan, KS, November 15, 1984

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Interactions Of Copper, Selenium, And Vitamin E For Weanling Swine (1984), A J. Thulin, D S. Pollmann, Frank Blecha, G A. Kennedy, P Whetter, G L. Allee Jan 1984

Interactions Of Copper, Selenium, And Vitamin E For Weanling Swine (1984), A J. Thulin, D S. Pollmann, Frank Blecha, G A. Kennedy, P Whetter, G L. Allee

Kansas Agricultural Experiment Station Research Reports

One-hundred and sixty pigs were utilized to evaluate possible interactions between copper (Cu), selenium (Se), and vitamin E (E) on growth and immunity of starter pigs. Copper (260 ppm) added to the diet did not effect Se and/or E utilization for growth, feed efficiency (FE), or immunity. However, addition of 260 ppm of Cu to the diets of starter pigs resulted in an 8% improvement in feed intake (FI) and a 13% improvement in average daily gain (ADG) for the first 2 wk on test. There was no effect on performance due to E additions. However, addition of .3 ppm …

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Effect Of Bacillus Subtilus On Sow And Baby Pig Performance And Bacterial Populations (1984), R R. Laforge, D S. Pollmann Jan 1984

Effect Of Bacillus Subtilus On Sow And Baby Pig Performance And Bacterial Populations (1984), R R. Laforge, D S. Pollmann

Kansas Agricultural Experiment Station Research Reports

A Bacillus subtilus probiotic was tested using a total of 52 sows and 516 baby pigs to determine the effect on enteric colibacillosis control and on host bacterial population. The probiotic did not affect sow or baby pig performance nor influence host bacterial populations of the digestive tract.; Swine Day, Manhattan, KS, November 15, 1984

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Altrenogest And Fat For Summer Breeding Of First-Litter Sows (1984), Jeffrey S. Stevenson, Duane L. Davis, D S. Pollmann Jan 1984

Altrenogest And Fat For Summer Breeding Of First-Litter Sows (1984), Jeffrey S. Stevenson, Duane L. Davis, D S. Pollmann

Kansas Agricultural Experiment Station Research Reports

Crossbred first-Iitter sows in a commercial swine unit were assigned to serve as controls after summer weanings or were fed altrenogest for 7 days or altrenogest for 7 days plus supplemental fat for 14 days after weaning. While similar proportions of sows came into heat after weaning, sows fed altrenogest returned to estrus about 9 days later than control sows. Incidence of anestrus was similar across sow groups (31%), while most of the sows not detected in heat could be classified by cause after examining serum progesterone concentrations at 3 wk after weaning. Nearly 69 % of the sows not …

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Limiting Amino Acids In Sorghum Grain Protein For Adult Female Swine (1984), A J. Thulin, G L. Allee, D S. Pollman Jan 1984

Limiting Amino Acids In Sorghum Grain Protein For Adult Female Swine (1984), A J. Thulin, G L. Allee, D S. Pollman

Kansas Agricultural Experiment Station Research Reports

Two 4 x 4 Latin square designs were used with 16 gilts at 10 mo of age and weighing 341 lb (gravid) and 301 lb (nongravid) to determine the limiting nitrogenous factors in sorghum grain protein for adult gravid (70th day postcoitum) and nongravid swine. Supplementation of the fortified sorghum grain diet with lysine increased (P<.05) nitrogen retention in both nongravid and gravid gilts. A further addition of threonine also increased (P>.05) nitrogen retention in both nongravid and gravid gilts. However, addition of both lysine and threonine to the sorghum diet failed to result in nitrogen retention equal to that observed for the control diet. Percentage of nitrogen digested was higher (P<.05) for the control diet than for the basal diet or the two diets with lysine and threonine added. Blood urea nitrogen was reduced (P<.05) when lysine was added to the basal diet with an additional reduction when threonine also was added to the diet. However, the control diet caused higher blood urea values when compared to both supplemented diets. These results suggest that another amino acid may be limiting in the sorghum grain diet supplemented with both lysine and threonine. These data and other published data demonstrate that lysine and threonine are the first and second limiting amino acids in sorghum grain for adult gravid and nongravid swine.; Swine Day, Manhattan, KS, November 15, 1984

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Silo Guard Ii® For Alfalfa, Corn, And Forage Sorghum Silages (1984), K. Bolsen, H. Ilg, M. Hinds Jan 1984

Silo Guard Ii® For Alfalfa, Corn, And Forage Sorghum Silages (1984), K. Bolsen, H. Ilg, M. Hinds

Kansas Agricultural Experiment Station Research Reports

In the first trial, calves fed Silo Guard II®-treated forage sorghum silage were 4.2% more efficient than those fed the control silage. Silo Guard II reduced the amount of heat produced during the ensiling process, and increased the dry matter recovered from the silo by nearly 7 percentage units (84.1 vs. 77.2%). The more efficient gain and reduced shrink loss for the treated silage gave 8.3% extra pounds of calf gain per ton of crop ensiled when compared with the control silage. In the second trial, laboratory silos were used to evaluate three levels of Silo Guard II (.5, 1.0, …

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Effect Of Oxytetracycline Hydrochloride Coating Added To Compudose Implants In Grazing Steers (1984), Lyle W. Lomas Jan 1984

Effect Of Oxytetracycline Hydrochloride Coating Added To Compudose Implants In Grazing Steers (1984), Lyle W. Lomas

Kansas Agricultural Experiment Station Research Reports

Adding an oxytetracycline coating to Compudose implants did not change their effectiveness. Implanting with Compudose significantly increased gain of grazing steers an average of 17% compared to non-implanted controls.

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Effects Of Low Voltage Electrical Stimulation During Bleeding And Hot Boning On Beef Loin Eye And Top Round Muscles (1984), J.B. Axe, Melvin C. Hunt, Donald H. Kropf, D.G. Gray, Curtis L. Kastner, Michael E. Dikeman Jan 1984

Effects Of Low Voltage Electrical Stimulation During Bleeding And Hot Boning On Beef Loin Eye And Top Round Muscles (1984), J.B. Axe, Melvin C. Hunt, Donald H. Kropf, D.G. Gray, Curtis L. Kastner, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Our study evaluated the effects of low voltage electrical stimulation (ES) during bleeding and hot boning at 1 hr postmortem on loin eye (LE) and top round (TR) muscles. Possibly because of relatively slow initial chilling rate used in our study, hot-boned (HB) muscles, even without ES, were comparable to conventionally chilled and boned counterparts. In fact, coupling ES with HB proved less desirable than HB only.

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Performance And Profitability Of Calves And Yearlings In Southeast Kansas Steer Futurities (Seven Year Summary) (1984), C. Lambert, F. Brazle, L. Corah, R. Schalles Jan 1984

Performance And Profitability Of Calves And Yearlings In Southeast Kansas Steer Futurities (Seven Year Summary) (1984), C. Lambert, F. Brazle, L. Corah, R. Schalles

Kansas Agricultural Experiment Station Research Reports

Since the fall of 1976, 370 calves and 330 yearlings have been fed through the Southeast Kansas Steer Futurities. In four of the last seven years, both age categories have shown profits through the feedlot phase, using incoming market values assigned by professional market managers, actual feedlot performance and expenses, and slaughter value based on grade and yield date. Calves have been more profitable than yearlings in each of the seven years.

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Medication Programs For Newly Received Calves (1984), D. Axe, M. Spire, Jack G. Riley Jan 1984

Medication Programs For Newly Received Calves (1984), D. Axe, M. Spire, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

Three medication programs for newly purchased feeder calves were compared and found to be similar in effectiveness. There was considerable variation in cost between the three medication programs which indicates a potential cost saving opportunity. Twenty-three percent of the calves received were diagnosed as sick at least once during the 56-day trial.

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Effect Of Ralgro® Implantation Periods On Masculinity And Carcass Traits Of Young Bulls And Steers (1984), D.G. Gray, L.R. Corah, John A. Unruh, Michael E. Dikeman Jan 1984

Effect Of Ralgro® Implantation Periods On Masculinity And Carcass Traits Of Young Bulls And Steers (1984), D.G. Gray, L.R. Corah, John A. Unruh, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Repeated Ralgro® implantation of young bulls from birth to slaughter resulted in gains and carcass characteristics traits intermediate between non-implanted bulls and steers, and meat palatability traits similar to steers. On the other hand, implanting bulls near birth reduced postweaning gains and both live and carcass masculinity. There is little advantages to implanting bulls from weaning to slaughter without initial implantation at birth.

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Consumer Preference Of Beef Rib Steaks From Implanted Steers, Implanted And Non-Implanted Bulls (1984), C.D. Pelton, Dell M. Allen, L.R. Corah, George A. Milliken Jan 1984

Consumer Preference Of Beef Rib Steaks From Implanted Steers, Implanted And Non-Implanted Bulls (1984), C.D. Pelton, Dell M. Allen, L.R. Corah, George A. Milliken

Kansas Agricultural Experiment Station Research Reports

Our research showed that implanting bulls from birth to slaughter made steaks from bulls as acceptable as steers to consumer panels. Implanting bulls from weaning to slaughter resulted in the least desirable consumer panel ratings for all palatability traits measured.

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Stocking Rate And Supplementation For Steers Grazing Bluestem Pasture In Early Summer (1984), R. Held, Jack G. Riley, Clenton E. Owensby, E. Smith Jan 1984

Stocking Rate And Supplementation For Steers Grazing Bluestem Pasture In Early Summer (1984), R. Held, Jack G. Riley, Clenton E. Owensby, E. Smith

Kansas Agricultural Experiment Station Research Reports

Native bluestem pastures were grazed from May 16 to July 14, 1983 by steers with an average beginning weight of 545lbs., at stocking rates of 1.82, 1.5, and 1.25 acres per steer. Daily gains for the high and low stocking rates were higher (P<.01) than for the medium stocking rate (2.22, 2.24 vs. 1.92 lb/day). Gains per acre were similar for the low and medium stocking rates, but was higher for the highest stocking rate (73, 75 vs 105 lb/acre). Half of the steers in each stocking rate were self-fed a salt-limiting sorghum grain- Rumensin® mixture at an average intake of 1.84 lb per head per day. Supplementation increased daily gain (P<.01) over non-supplemented (2.39 vs. 1.86 lb/day). Gain per acre was increased 22 lbs by supplementation. Herbage remaining following grazing decline with increased stocking rate. No regrowth occurred following livestock removal in mid July. Warm-season perennial grass composition and basal cover have not changed differentially in relation to stocking rate during the 3-year study period.

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Urea And Fermentrol® Additives For Forage Sorghum Silage (1984), B. Janicki, K. Bolsen, M. Hinds, H. Ilg Jan 1984

Urea And Fermentrol® Additives For Forage Sorghum Silage (1984), B. Janicki, K. Bolsen, M. Hinds, H. Ilg

Kansas Agricultural Experiment Station Research Reports

Adding urea to forage sorghum greatly increased the ensiling temperature, produced a more rapid and extensive fermentation, and resulted in more shrink loss in the silo. Fermentrol®, an enzyme-inoculant additive, had very little affect on the silage temperature or chemical composition, but it did reduce the shrink loss. Calves red urea-treated silage had the poorest performance. Control and Fermentrol® silages each produced about 90 lb of calf gain per ton of crop ensiled, however urea silage produced only 60 lb. All three silages had short bunk lives throughout the trial.

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Comparison Of Compudose, Ralgro And Synovex-S Implants For Growing Steer Calves (1984), D. Simm, Gerry L. Kuhl, R. Schalles Jan 1984

Comparison Of Compudose, Ralgro And Synovex-S Implants For Growing Steer Calves (1984), D. Simm, Gerry L. Kuhl, R. Schalles

Kansas Agricultural Experiment Station Research Reports

Four field trials were conducted to compare Ralgro, Synovex-S and Compudose implants for growing steer calves. All implant programs significantly increased (P<.01) average daily gain. Reimplanting with Ralgro or Synovex-S improved gain an additional 5.6% compared to the average of these implants used singly and 4.8% compared to Compudose.

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Effect Of Sorghum Type And Harvest Date On Silage Feeding Value (1984), R. Smith, K. Bolsen, H. Ilg, M. Hinds, J. Dickerson, J. Hoover, Ronald V. Pope Jan 1984

Effect Of Sorghum Type And Harvest Date On Silage Feeding Value (1984), R. Smith, K. Bolsen, H. Ilg, M. Hinds, J. Dickerson, J. Hoover, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Five silages produced in 1982 were evaluated in two growing trials using 96 steer calves. Forage sorghum silage (heading) was assigned a feeding value of 100. Based on comparative rates and efficiencies of gain, feeding value for the grain sorghum silage averaged 107.5 in Trial 1. The non-heading forage sorghum silage had a value of 64.6 in Trial 1 but only 40.2 before freezing and 31.4 after freezing in Trial 2. The poor values for the non-heading silages were due, in part, to very low feed intakes. There was no advantage in harvesting the non-heading sorghum after a freeze. Rolling …

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Feedlot Performance Of Angus And Brahman X Angus Steers During Cold Weather (1984), S. Boyles, Jack G. Riley, Ronald V. Pope Jan 1984

Feedlot Performance Of Angus And Brahman X Angus Steers During Cold Weather (1984), S. Boyles, Jack G. Riley, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Straightbred Angus steers gained .21 lb/day faster than Brahman x Angus steers during a 184-day winter feeding trial. Angus steers had a higher yield grade. more fat thickness at 12th rib, and graded 90% Choice. Brahman x Angus steers were 40 days younger at slaughter, had more carcass weight/day of age and larger loin eyes, but only graded 10% choice. There was no difference in feed efficiency.

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Comparison Of Synovex-S And Steer-Oid Implants For Feedlot Steers (1984), B. Lee, S. Laudert Jan 1984

Comparison Of Synovex-S And Steer-Oid Implants For Feedlot Steers (1984), B. Lee, S. Laudert

Kansas Agricultural Experiment Station Research Reports

Synovex-S and STEER-oid were compared in a 133-day finishing trial to evaluate their effects on growth and carcass traits of yearling steers. No significant differences in average daily gain, feed intake, feed to gain ratio, carcass weight, ribeye area, fat thickness, quality grade or yield grade were detected between the two implants at the end of the trial. However, significant differences in feed efficiency were detected during days 0-35 and 36-63, possibly due to different release rates of the implants.

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Effects Of Rapid And Delay Silo Filling And 1177® Silage Inoculant On Performance Of Growing Cattle Fed Corn And Sorghum Silages (1984), K. Bolsen, H. Ilg, M. Hinds, George A. Milliken, J. Hoover Jan 1984

Effects Of Rapid And Delay Silo Filling And 1177® Silage Inoculant On Performance Of Growing Cattle Fed Corn And Sorghum Silages (1984), K. Bolsen, H. Ilg, M. Hinds, George A. Milliken, J. Hoover

Kansas Agricultural Experiment Station Research Reports

Eight concrete stave silos (10 x 50 ft) were used in two trials to evaluate rapid (24 to 36 hr) and delay (15 days) filling, each with our without 1177® silage inoculant. Corn silage was used in Trial 1; forage sorghum in Trial 2. The delay-fill silages had a dry matter (DM) range of 34.4 to 39.9% in Trial 1 and 24.2 to 29.6% in Trial 1. All eight silages were well preserved with the four delay-fill silos having lower total fermentation acids than their rapid-fill counterparts. With corn silage, the rapid-fill silos had higher silage DM recoveries than the …

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Culbac® And Add-F® (Formic Acid) Additives For Sudangrass And High Moisture Shelled Corn Silages (1984), K. Bolsen, M. Hinds, H. Ilg Jan 1984

Culbac® And Add-F® (Formic Acid) Additives For Sudangrass And High Moisture Shelled Corn Silages (1984), K. Bolsen, M. Hinds, H. Ilg

Kansas Agricultural Experiment Station Research Reports

Laboratory silos were used in three trials to evaluate sudangrass (slightly or moderately wilted) and high moisture corn silages, each receiving the following treatments: (1) control (no additive); (2) CULBAC® dry; (3) CULBAC® liquid; and (4) ADD-F® (formic acid). Although the 12 silages were well preserved visually, there were differences in their chemical compositions. Silages treated with CULBAC dry had the highest DM recoveries and probably the most efficient fermentations. As expected, formic acid restricted the amount of fermentation, but surprisingly, it did not improve DM recovery.

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The Weather In 1982 And 1983, L. Dean Bark Jan 1984

The Weather In 1982 And 1983, L. Dean Bark

Kansas Agricultural Experiment Station Research Reports

The 1983 weather in Kansas upset carefully laid plans and confounded the best management techniques. Yet the averages for 1982 and 1983 appear very similar. In Manhattan, the average temperatures were 54.04 F for 1982 and 54.06 for 1983. Precipitation totals were 32.88 in. for 1982 and 35.74 in. for 1983. However, those who watched their crops dry up in the summer of 1983 after delayed planting because of wet fields, and suffered with their livestock through heat stress in July and August and cold stress during December know differently. Neither our crops nor our livestock ever experience "average" weather. …

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Single Vs. Reimplant Programs For Finishing Steers (1984), Jack G. Riley, Ronald V. Pope Jan 1984

Single Vs. Reimplant Programs For Finishing Steers (1984), Jack G. Riley, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Finishing yearling beef steers were used to compare various implant programs in a 167-day trial. All implant programs increased daily gain ranging from 6.6 to 25.4% over non-implanted controls and improved feed efficiency ranging from .5 to 13.9%. Steers implanted with Ralgro® initially and reimplanted 75 days later with Synovex-S gained the fastest and most

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Sodium Bicarbonate And Feed Flavor Supplements For Calves Fed Forage Sorghum Silage (1984), K. Bolsen, D. Axe Jan 1984

Sodium Bicarbonate And Feed Flavor Supplements For Calves Fed Forage Sorghum Silage (1984), K. Bolsen, D. Axe

Kansas Agricultural Experiment Station Research Reports

High-moisture forage sorghum silage was fed to 108 steer calves to measure the effect of sodium bicarbonate and feed flavor (Omniflavor®) on calf performance. Overall performance was similar for all three rations by the end of the 94-day trial, but at days 29 to 56, when weather conditions were extremely cold, bicarbonate and Omniflavor each gave improved rate and efficiency of gains.

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Effect Of Ammonia Level And Treatment Temperature On Intake And Digestibility Of Wheat Straw By Lambs (1984), A. Laytimi, K. Bolsen, B. Janicki Jan 1984

Effect Of Ammonia Level And Treatment Temperature On Intake And Digestibility Of Wheat Straw By Lambs (1984), A. Laytimi, K. Bolsen, B. Janicki

Kansas Agricultural Experiment Station Research Reports

Replicate, covered wheat straw (WS) stacks were treated with 1.5 or 3.0% anhydrous ammonia in three environmental chambers at 37, 68, or 95 F, for 23 days. Then digestibility was measured (wethers). Rations were 88% wheat straw and 12% supplement. The control wheat straw was non-ammoniated but contained 5% urea in the supplement. Stack temperatures increased rapidly within 2.5 hours post-ammoniation, and equilibrated at chamber temperatures for the rest of the treatment period. Both crude protein (CP) and in vitro matter digestibility of the WS increased with ammonia level and treatment temperature. Percent of the ammonia recovered increased with temperature …

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Implant Comparisons For Finishing Steers (1984), S. Laudert, Gerry L. Kuhl, M. Walker Jan 1984

Implant Comparisons For Finishing Steers (1984), S. Laudert, Gerry L. Kuhl, M. Walker

Kansas Agricultural Experiment Station Research Reports

A one hundred and forty day field trial was conducted to evaluate the relative performance of steers implanted with Compudose, Ralgro and Synovex-S. Daily gains of cattle receiving a single initial implant were increased 8.0% with Compudose, 12.7% with Ralgro and 21.5% with Synovex-S compared to non-implanted controls. Steers on a reimplant program with Ralgro and/or Synovex-S gained 23.6 to 24.9% faster than controls, with no significant difference due to implant brand or sequence.

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Effect Of A Single Ralgro Implant On Conception Rates And Calving Difficulty In First Calf Beef Heifers (1984), R.P. Bolze, L.R. Corah, R.J. Pruitt Jan 1984

Effect Of A Single Ralgro Implant On Conception Rates And Calving Difficulty In First Calf Beef Heifers (1984), R.P. Bolze, L.R. Corah, R.J. Pruitt

Kansas Agricultural Experiment Station Research Reports

Three hundred and seventy four heifers from two Kansas ranches were used to determine if a single Ralgro implant given either at two months of age or at weaning would influence pelvic development and subsequent calving difficulty or conception rates. The study involved two hers of Simmental (spring and fall calving) and one herd of fall calving Angus cattle. Ralgro did not influence conception rates as yearlings, or percentages of heifers requiring assistance with their first calf. Implanted heifers had larger pelvic areas as yearlings, but the advantage disappeared by two years of age. Pelvic area in assisted vs unassisted …

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