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Kansas Agricultural Experiment Station Research Reports

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1982

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Articles 31 - 60 of 62

Full-Text Articles in Life Sciences

Sorghum Grain Stillage For Pregnant Gilts (1982), G L. Allee, B A. Koch, K Jackson Jan 1982

Sorghum Grain Stillage For Pregnant Gilts (1982), G L. Allee, B A. Koch, K Jackson

Kansas Agricultural Experiment Station Research Reports

Gilts during pregnancy consumed approximately 29 pounds of milo stillage per day, when fed only stillage. Availability of water did not affect stillage consumption. Gilts fed stillage consumed only 2.2 pounds of DM per day which was not enough to maintain body weight. Gilts fed all the stillage they would consume and one pound of the control diet made similar weight gains and had similar reproductive performance as gilts fed three pounds of the control diet. This suggests that the energy value of the milo stillage is similar to that of the control diet (1620 kcal DE/lb DM) for gilts …

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Effect Of Particle Size And Physical Form On Digestibility Of Sun-Cured Alfalfa For Pregnant Sows (1982), L J. Nuzback, D S. Pollmann, Keith C. Behnke Jan 1982

Effect Of Particle Size And Physical Form On Digestibility Of Sun-Cured Alfalfa For Pregnant Sows (1982), L J. Nuzback, D S. Pollmann, Keith C. Behnke

Kansas Agricultural Experiment Station Research Reports

Sixteen pregnant crossbred sows (second parity) were employed in a digestion trial to evaluate the effect of particle size and physical form of sun-cured alfalfa. The treatment consisted of 1/4 inch meal, 1/4 inch pelleted, 1/2 inch meal, and ½ inch meal pelleted. Utilization of dry matter (DM), digestible energy (DE) and fiber components increased (P<.05) with the 1/4 inch particle size compared to 1/2 inch. Nitrogen utilization was not affected by the two particle sizes. Cellulose digestibility increased (P<.05) when pelleted but other digestion coefficients were not affected. During the third trimester, digestibility of DM, energy and fiber components increased (P<.05) compared to the first trimester. Apparent nitrogen digestibility increased (P<.05) in the third trimester but nitrogen balance and nitrogen retention decreased. The results of this study indicate that alfalfa is equally digested as meal or pellets and increased utilization by gestating sows can be expected with decreased particle size.; Swine Day, Manhattan, KS, November 11, 1982

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Fertility With Artificial Insemination: Gilts That Lock On The Insemination Spirette Vs. Those That Don't (1982), W E. Schmidt, Duane L. Davis, Jeffrey S. Stevenson Jan 1982

Fertility With Artificial Insemination: Gilts That Lock On The Insemination Spirette Vs. Those That Don't (1982), W E. Schmidt, Duane L. Davis, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

KSU breeding records show a higher farrowing rate for gilts that "lock" on the insemination spirette at both inseminations as opposed to gilts that "lock" at one insemination or at neither insemination. Continued research is focusing on factors affecting female response to insemination and fertility.; Swine Day, Manhattan, KS, November 11, 1982

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Boar Rearing: The Influence Of Group Vs Individual Penning From Weaning To 27 Weeks Of Age (1982), S T. Tonn, J V. Craig, Duane L. Davis Jan 1982

Boar Rearing: The Influence Of Group Vs Individual Penning From Weaning To 27 Weeks Of Age (1982), S T. Tonn, J V. Craig, Duane L. Davis

Kansas Agricultural Experiment Station Research Reports

We compared mating performance and soundness of feet and legs of boars which were reared in group vs individual pens. Individually penned boars consumed more feed from 6 to 12 weeks of age and were heavier at 12 weeks of age. However, individually penned boars also were more unsound and tended to score lower in mating tests.; Swine Day, Manhattan, KS, November 11, 1982

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Big Things - Little Things (1982), D D. Pretzer Jan 1982

Big Things - Little Things (1982), D D. Pretzer

Kansas Agricultural Experiment Station Research Reports

This study examined the economic effects of applying controllable management factors for farrow-to-finish operations. Average producers in Kansas market 7 pigs/litter with an average feed conversion of 4.58. Improvement in 9 areas of management increased profits on 240 litters by $43,680. Each item appears small. However "Big Things" come from the sum of "Little Things".; Swine Day, Manhattan, KS, November 11, 1982

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Economics, Veterinary Service And Herd Health Programs (1982), Steven C. Henry Jan 1982

Economics, Veterinary Service And Herd Health Programs (1982), Steven C. Henry

Kansas Agricultural Experiment Station Research Reports

Among the many changes in the swine industry during the past two decades, the concept of "Herd Health Programs" came to be. Still a buzz word with poorly defined activities, "Herd Health Programs" are part of our industry. Just listen in the halls during producer or veterinary meetings -- we discuss getting one, already having one, offering one, getting into the business of delivering several of them -- and none of us is quite sure what "one" is and, most of all, what it's worth. There should be no surprise that neither of us, producer or veterinarian, really has the …

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Alfalfa Silages And Hay And Corn Supplementation For Yearling Steers (1982), K. Bolsen, H. Ilg, M. Hinds, J. Hoover Jan 1982

Alfalfa Silages And Hay And Corn Supplementation For Yearling Steers (1982), K. Bolsen, H. Ilg, M. Hinds, J. Hoover

Kansas Agricultural Experiment Station Research Reports

Four alfalfa forages were evaluated: 1) hay; 2) low-dry matter (DM) silage; 3) medium-DM silage; and 4) high-DM silage. All forages were full-fed along with 2 lb of supplement or supplement plus 2 or 4 lb of cracked corn. Calves fed hay or medium-DM silage had the fastest and most efficient gains. Hay had the highest intake; low-DM silage, the lowest. Adding corn to the ration improved calf performance slightly, but feed costs per lb of gain were similar for all three levels of corn supplementation. Low- and medium-DM silages were better preserved than high-DM silage, which contained considerable spoilage …

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Forage Sorghum Silage And Summer Annual Silage And Hays For Growing Steers And Heifers (1982), K. Bolsen, H. Ilg, M. Nuwanyakpa, Gerry L. Posler Jan 1982

Forage Sorghum Silage And Summer Annual Silage And Hays For Growing Steers And Heifers (1982), K. Bolsen, H. Ilg, M. Nuwanyakpa, Gerry L. Posler

Kansas Agricultural Experiment Station Research Reports

Sorghum-Sudan hay and silage and sudangrass hay were compared with forage sorghum silage in an 80-day growing trial involving 60 calves. Calves fed forage sorghum gained 14% faster than those fed sudangrass hay (P<.05). Calves fed either of the two silages consumed less feed (P<.05) but were more efficient (P<.05) than those fed either of the two hays. This and two previous trials indicate that early-harvested summer annual silages and hays produce similar rates of gain but that silages are used 10 to 20% more efficiently by growing cattle. These forages have 75 to 90% of the relative feeding value of average-quality forage sorghum silage. With crude protein content of 12 to 15%, our summer annuals required little, if any, supplemental protein.

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High-Moisture Corn With Additives For Finishing Rations (1982), B. Young, H. Ilg, K. Bolsen Jan 1982

High-Moisture Corn With Additives For Finishing Rations (1982), B. Young, H. Ilg, K. Bolsen

Kansas Agricultural Experiment Station Research Reports

Dry corn (dry), Harvestore ensiled high-moisture corn, stave silo ensiled high-moisture corn (stave H.M.C.) and stave H.M.C. ensiled with NaOH, Cold-flo ammonia, or Silo-Best additives were evaluated in steer and heifer finishing trials. Cold-flo and NaOH H.M.C. gave slowest gains; NaOH had the highest intake and Harvestore H.M.C. the lowest, efficiency of gain favored the Harvestore H.M.C. All H.M.C. corn except NaOH was unstable in air because of high dry matter at ensiling, slow corn use, and warm temperatures. Dry matter losses and temperature rises during air exposure were highest for Cold-flo and Harvestore H.M.C.

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Sila-Bac And Molasses Additives For High Moisture Sorghum Grain (1982), J.I. Heidker, H. Ilg, Keith C. Behnke, K. Bolsen Jan 1982

Sila-Bac And Molasses Additives For High Moisture Sorghum Grain (1982), J.I. Heidker, H. Ilg, Keith C. Behnke, K. Bolsen

Kansas Agricultural Experiment Station Research Reports

Sila-bac, molasses, or both combined were evaluated as additives for ensiled high moisture sorghum grain. Control grain had the greatest increase in temperature during ensiling. Grain treated with Sila-bac had the highest lactobacilli count but control grain had the fastest drop in pH. Sila-bac grain was the most stable in air and remained stable for 30 days. Control grain was stable for 21 days; grain treated with molasses or molasses plus Sila-bac was stable until day 5. Group-fed steers receiving Sila-bac grain gained faster and were more efficient than steers fed control or molasses-treated grain. Individually fed steers gained fastest …

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Effect Of Bovatec® And Synovex-S® Implants On Finishing Steer Performance (1982), Lyle W. Lomas Jan 1982

Effect Of Bovatec® And Synovex-S® Implants On Finishing Steer Performance (1982), Lyle W. Lomas

Kansas Agricultural Experiment Station Research Reports

Cattle fed Bovatec consumed 18.3% less feed and were 19.4% more efficient in feed conversion than controls, with no effect on gain. Synovex-S implants improved gain by 8.2% with no effect on feed intake and feed efficiency. The effects of Bovatec and Synovex-S were additive.

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Little Things That Mean A Lot In Managing Beef Cattle, D. Pretzer Jan 1982

Little Things That Mean A Lot In Managing Beef Cattle, D. Pretzer

Kansas Agricultural Experiment Station Research Reports

Survival in the beef cattle business for the next year or so will depend on doing little things well, says Don Pretzer, extension farm management specialist at Kansas State. "Doing enough little things right will add up to big differences in profitability. no matter whether you're a cow-calf operator, a backgrounder or a cattle finisher." He offers some interesting ideas for cattle ranchers. The economist says cow herd costs are running around $375 per cow-calf unit per year. This includes $178 for feed, including pasture for 15% replacements. 15% interest on the value of the cow ($450) and $32 a …

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Silo-Best And Sila-Ferm Additives For Corn Silage And Drought-Stressed Corn Silage For Yearling Steers (1982), K. Bolsen, H. Ilg Jan 1982

Silo-Best And Sila-Ferm Additives For Corn Silage And Drought-Stressed Corn Silage For Yearling Steers (1982), K. Bolsen, H. Ilg

Kansas Agricultural Experiment Station Research Reports

Normal corn silage, with and without additives, and drought-stressed corn silage were evaluated in a 77-day growing trial using 64 steers. Steers fed drought silage had slowest and least efficient gains. Additive-treated silages were used more efficiently than the control silage. Dry matter recovery from the silos was consistently improved by the enzyme additive but not by the microbial inoculant additive. Steer gain per ton of corn crop ensiled was increased by 7.2 and 4.4 lb for enzyme and inoculant silages, respectively, compared with that for the control silage.

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Stocking Rate And Supplementation For Steers Grazing Intensively On Early-Stocked Bluestem Pasture (1982), R. Held, E.F. Smith, Jack G. Riley, Clenton E. Owensby Jan 1982

Stocking Rate And Supplementation For Steers Grazing Intensively On Early-Stocked Bluestem Pasture (1982), R. Held, E.F. Smith, Jack G. Riley, Clenton E. Owensby

Kansas Agricultural Experiment Station Research Reports

Native bluestem pastures were grazed by 520-lb steers from April 30 to July 14 at stocking rates of 1.7, 1.3 and 1.1 acres per steer. Daily gain of the steers was about the same for the two heavier stocking rates, but was slightly lower for the lightest rate (1.7 acres/steer). The gain per acre increased with each increase in stocking rate. Half of the steers were self-fed a salt-limited sorghum grain-rumensin mixture. Each steer consuming approximately 1.5 pounds per day of this mixture gained about a half a pound more per day (P<.05) than did each steer not fed the supplement (1.77 vs 1.27 lbs.). Gain per acre was increased by 33 lbs. with the supplementation.

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Inoculant And Urea-Molasses Additives For Forage Sorghum Silage (1982), M. Hinds, J. Brethour, K. Bolsen, H. Ilg Jan 1982

Inoculant And Urea-Molasses Additives For Forage Sorghum Silage (1982), M. Hinds, J. Brethour, K. Bolsen, H. Ilg

Kansas Agricultural Experiment Station Research Reports

An inoculant (Sila-bac) and a non-protein nitrogen (LSA-100) silage additive were evaluated with whole-plant, forage sorghum silage. Sila-bac silage had the fastest temperature rise and peaked at 10 C above its initial temperature. LSA-100 silage had a slow, steady temperature rise and reached a maximum of 22 C above its initial. Control silage peaked at 15 C above its initial. Steers fed LSA-100 silage gained 7 to 9% faster than did those fed control or Sila-bac silages. LSA-100 silage was consumed in greatest amount; Sila-bac silage, in the least. The two additives improved feed efficiency by 3% over the control. …

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The Effect Of Avoparcin On The Performance Of Grazing Steers (1982), L.R. Corah, W.D. Busby, Jack G. Riley Jan 1982

The Effect Of Avoparcin On The Performance Of Grazing Steers (1982), L.R. Corah, W.D. Busby, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

One hundred two steers were used to study the effect of Avoparcin on the performance of grazing steers. Four desired dosages -- 0. 200, 400. and 600 mg/head/day -- were compared in a self-fed mineral mix. Feeding Avoparcin at the desired level of 400 mg/head/day increased steer gains By 22%.

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Estrus Synchronization Of Cattle In Kansas (1982), D.D. Simms, L.R. Sprott, Kenneth G. Odde, L.R. Corah Jan 1982

Estrus Synchronization Of Cattle In Kansas (1982), D.D. Simms, L.R. Sprott, Kenneth G. Odde, L.R. Corah

Kansas Agricultural Experiment Station Research Reports

In 22 field trials involving 1,692 cattle, we evaluated Lutalyse as an estrus-synchronization agent for both natural mating and artificial insemination. Only 52.7% of the females in all 22 trials were cycling at the start of the breeding season. Both body condition and days postpartum at the start of the breeding season influenced the response to Lutalyse. First-service pregnancy rate in the 2 or 3 days of synchronization was 38.4% for all 453 females bred artificially in 12 trials in northwestern Kansas. The rate was 59%, however, if only females observed to be in heat were counted; but only 24.5% …

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Using Sprinklers To Improve Performance Of Heat-Stressed Feedlot Cattle (1982), D.R. Ames, J.B. Robinson, David A. Nichols Jan 1982

Using Sprinklers To Improve Performance Of Heat-Stressed Feedlot Cattle (1982), D.R. Ames, J.B. Robinson, David A. Nichols

Kansas Agricultural Experiment Station Research Reports

During a 56-day test, four pens of finishing cattle were sprinkled when dry-bulb temperatures exceeded 80 F. The performance of the cattle was compared with that of cattle in pens not sprinkled. Cattle in sprinkled pens gained faster (2.83 vs 2.44 lbs per day, P<.05) and more efficiently (4.45 vs 5.20 lbs feed per lb gain) than did those in the nonsprinkled. Feed intakes of all cattle were similar.

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Effect Of Rumensin On Legume Bloat In Cattle (1982), M.P. Katz, E.E. Bartley, E.S. Pressman, Tiruvoor G. Nagaraja Jan 1982

Effect Of Rumensin On Legume Bloat In Cattle (1982), M.P. Katz, E.E. Bartley, E.S. Pressman, Tiruvoor G. Nagaraja

Kansas Agricultural Experiment Station Research Reports

Rumensin with or without Bloatguard was fed to rumen-fistulated cattle grazing lush alfalfa pasture. Although Rumensin alone or in combination with low doses of Bloatguard reduced bloat, it was not completely effective. Hence, Bloatguard at the recommended dose is still necessary for full bloat control.

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Effects Of Rumensin Or Rumensin-Tylan Combination On Steer Performance And Liver Abscess Control (1982), Jack G. Riley, Ronald V. Pope Jan 1982

Effects Of Rumensin Or Rumensin-Tylan Combination On Steer Performance And Liver Abscess Control (1982), Jack G. Riley, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Combining Tylan with Rumensin dramatically reduced abscessed liver incidence, compared with that of steers fed a non-medicated control ration or Rumensin without Tylan. Only one steer out of 50 on the Rumensin plus Tylan combination had an abscessed liver, whereas livers from 16 of the control steers and 27 on Rumensin were condemned. There were no significant differences in daily gain among treatments; however, Rumensin plus Tylan improved feed efficiency by 9.4% compared with that of the control. Rumensin alone improved efficiency by 6%.

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Insecticide-Impregnated Ear Tags For Range Cattle (1982), G.L. Lynch, K.O. Zoellner, A.B. Broce, Jack G. Riley Jan 1982

Insecticide-Impregnated Ear Tags For Range Cattle (1982), G.L. Lynch, K.O. Zoellner, A.B. Broce, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

When both cows and calves were double-tagged (one tag per ear) with ear tags impregnated with fenvalerate (Ectrin) or permethrin (Atroban), the calves gained faster (P<.01) than when neither cows nor calves were tagged. Double-tagged yearling heifers gained faster (P<.05) than did heifers without tags. When all cows had been double-tagged, tagging the calves did not increase calf weight gain.

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Effect Of Ralgro And Compudose On Grazing Steer Performance (1982), Lyle W. Lomas Jan 1982

Effect Of Ralgro And Compudose On Grazing Steer Performance (1982), Lyle W. Lomas

Kansas Agricultural Experiment Station Research Reports

COMPUDOSE (an estradiol removable implant) increased steer gains during 202 days of grazing by 11.4%. Ralgro implants (once at the beginning of the study) increased gain 8.5%. Steer performance on the two implants was statistically similar.

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Feeding Rumensin To Yearling Heifers On Late-Summer Grass (1982), M. Jensen, R. Held, E.F. Smith, Jack G. Riley Jan 1982

Feeding Rumensin To Yearling Heifers On Late-Summer Grass (1982), M. Jensen, R. Held, E.F. Smith, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

Rumensin was self-fed in a loose salt mixture to yearling heifers on late-summer bluestem pasture (August to November). They ate 0.036 lbs. of salt mixture (124 mg of Rumensin) daily, but performance did not improve.

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Reproduction And Production Of Heifers Implanted With Ralgro Before Weaning (1982), D.D. Simms, F.L. Schwartz, L.R. Corah Jan 1982

Reproduction And Production Of Heifers Implanted With Ralgro Before Weaning (1982), D.D. Simms, F.L. Schwartz, L.R. Corah

Kansas Agricultural Experiment Station Research Reports

Over a 3-year period (1976-1978), heifer calves either were not implanted or were implanted between 2 and 5 months of age. In 1977, the study also included heifers implanted at birth. Implanting at birth increased the percentage of heifers open as yearlings. More implanted heifers tended to be open as 2- to 5-year-olds than control heifers, but the differences were not statistically significant. Implanting of the heifers had no effect on weight gains of their calves.

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Effect Of Bovatec And Ralgro Implants On Finishing Steer Performance (1982), Lyle W. Lomas Jan 1982

Effect Of Bovatec And Ralgro Implants On Finishing Steer Performance (1982), Lyle W. Lomas

Kansas Agricultural Experiment Station Research Reports

Cattle fed Bovatec consumed 17.4% less feed and were 17.7% more efficient than controls, with no effect on gain. Ralgro implants improved gain 12% and feed efficiency 6.9%, with no effect on feed intake. Bovatec and Ralgro combined had an additive effect on feed efficiency.

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Effect Of Bovatec On Grazing Steer Performance (1982), Lyle W. Lomas Jan 1982

Effect Of Bovatec On Grazing Steer Performance (1982), Lyle W. Lomas

Kansas Agricultural Experiment Station Research Reports

Steers fed 100 mg or 200 mg of Bovatec per head daily while grazing bromegrass gained 16.4% and 23.9% faster, respectively, during 112 days of grazing than did controls.

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Effect Of Lasalocid On Performance Of Grazing Steers (1982), L.R. Corah, Jack G. Riley, Ronald V. Pope Jan 1982

Effect Of Lasalocid On Performance Of Grazing Steers (1982), L.R. Corah, Jack G. Riley, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Steers fed 200 mg of Lasalocid per day while grazing bromegrass pasture gained 7.6% faster than non-medicated controls; however, this difference was not statistically significant.

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Effect Of 48-Hour Calf Removal (1982), D.D. Simms, Kenneth G. Odde, L.R. Corah Jan 1982

Effect Of 48-Hour Calf Removal (1982), D.D. Simms, Kenneth G. Odde, L.R. Corah

Kansas Agricultural Experiment Station Research Reports

In three field trials, we removed calves from 187 beef cows for 48 hours at the beginning of the breeding season to determine the effect on the cows' cycling activity, conception rate, and pregnancy rate. When calves were removed, the cows were injected with Lutalyse. Removing calves for 48 hours did not change weight gain or sickness incidence of calves, but neither did it facilitate the cows' rebreeding.

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Natural Mating Of Estrus-Synchronized Heifers And Indicators Of Bull Fertility (1982), R.J. Pruitt, L.R. Corah, D.D. Simms, M.F. Spire Jan 1982

Natural Mating Of Estrus-Synchronized Heifers And Indicators Of Bull Fertility (1982), R.J. Pruitt, L.R. Corah, D.D. Simms, M.F. Spire

Kansas Agricultural Experiment Station Research Reports

In six trials involving 486 heifers and 23 bulls, we studied factors affecting pregnancy rates of estrus-synchronized heifers mated naturally and evaluated indicators of bull fertility. Heavier heifers and those in fleshier condition had a higher response to estrus synchronization with Lutalyse. Heifers serviced more than once did not have higher pregnancy rates. Pregnancy rates achieved by bulls ejaculating up to 32 times in 2 1/2 days decreased only slightly as the number of ejaculations increased. There was considerable variation in pregnancy rates and the number of ejaculations achieved by individual bulls. Sex drive measured by a 3D-minute serving-capacity test …

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Kansas Survey: What Do Commercial Cow-Calf Producers Consider When Buying Herd Sires? (1982), R. Bolze, C. Lambert, S. O'Neill, L. Corah Jan 1982

Kansas Survey: What Do Commercial Cow-Calf Producers Consider When Buying Herd Sires? (1982), R. Bolze, C. Lambert, S. O'Neill, L. Corah

Kansas Agricultural Experiment Station Research Reports

Recently, Kansas State University surveyed the factors a commercial cowman considers when he buys Angus, Simmental, or Hereford bulls. A mail survey of the customers of 29 purebred breeders of those three breeds was conducted. We attempted to include a reasonable cross section of both performance and show-ring-oriented breeders. A total of 1,447 survey forms were distributed and 613 (42%) were returned.

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