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Kansas Agricultural Experiment Station Research Reports

1979

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Evaluation Of Comingling Pigs Before Weaning To Reduce Weaning Stress (1979), A J. Thulin, Robert H. Hines Jan 1979

Evaluation Of Comingling Pigs Before Weaning To Reduce Weaning Stress (1979), A J. Thulin, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Two trials were conducted to evaluate the management practice of comingling litters one week before weaning to help reduce weaning stress. Pigs which were comingled before weaning gained slightly faster the first two weeks after weaning than pigs mixed at weaning, but overall pig performance to 7 to 8 weeks of age was similar for rate of gain and feed efficiency.; Swine Day, Manhattan, KS, November 8, 1979

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Swine Embryo Culture And Transfer For Export To England (1979), J E. James, P D. Reeser, Duane L. Davis, E C. Straiton, A C. Talbot, C Polge Jan 1979

Swine Embryo Culture And Transfer For Export To England (1979), J E. James, P D. Reeser, Duane L. Davis, E C. Straiton, A C. Talbot, C Polge

Kansas Agricultural Experiment Station Research Reports

A major threat to swine enterprises is the possible introduction of disease when new breeding animals are purchased and introduced. So, methods of introducing new genetic material while minimizing the potential for introducing disease are needed. Transfer of embryos from a donor sow in another herd or country would minimize disease risks. Already used to introduce new breeding stock into Specific Pathogen Free herds and other closed herds, embryos now are placed in the recipient gilt's or sow1s uterus within a few hours after their recovery from the donor. That method prevents export and limits application of swine embryo transfer …

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Comparison Of Anthelmintics For Pigs Raised In Outside Lots (1979), G L. Allee, D Schoneweis Jan 1979

Comparison Of Anthelmintics For Pigs Raised In Outside Lots (1979), G L. Allee, D Schoneweis

Kansas Agricultural Experiment Station Research Reports

One hundred fifty crossbred pigs averaging 21 lbs. initially were used to evaluate the effects of Banminth or Tramisol on performance of pigs housed in worm-contaminated dirt lots. Neither anthelmintic significantly affected average daily gain or feed efficiency. Pigs fed Banminth continuously were 5% more efficient in feed utilization during the starter phase and 4% more efficient in feed utilization during the grower phase than nonwormed pigs. Pigs fed Banminth had no liver scarring and no ascarids in gastrointestinal tracts at 125 pounds. Untreated pigs and those treated with Tramisol had lever scarring and ascarids in the gastrointestinal tracts at …

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Predicting Feedlot Performance Using Mathematical Models, P. George, B.E. Brent Jan 1979

Predicting Feedlot Performance Using Mathematical Models, P. George, B.E. Brent

Kansas Agricultural Experiment Station Research Reports

Tables based on mathematical models illustrate how feed intake, rate of gain, and feed efficiency change during the feeding period and in response to different wing-chill temperatures. The tables wert used to calculate costs or gain.

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High Moisture Corn For Finishing Steers, K. Bolsen, H. Ilg, Jack G. Riley Jan 1979

High Moisture Corn For Finishing Steers, K. Bolsen, H. Ilg, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

W used 135 yearling steers in two trials to compare dry with high moisture (HM) corn and soybean meal (SBM) supplement with urea supplement. Results of trail 1 (88 days) show HM corn either rolled or ensiled in a stave silo or ensiled whole in a fiberglass O2-limiting silo supported faster and more efficient gains than dry rolled, steam-flaked or HM-corn treated with a preservation. A 50% SBM+ 50% urea supplement tended to be used more efficiently than either 100% SBM or 100% urea supplements. In trial 2 (97 days) steers fed dry rolled corn or HM corn ensiled with …

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Nutritional Effects On Beef Palatability, D.E. Burson, Melvin C. Hunt, L.H. Hayward, Curtis L. Kastner, Donald H. Kropf, Dell M. Allen Jan 1979

Nutritional Effects On Beef Palatability, D.E. Burson, Melvin C. Hunt, L.H. Hayward, Curtis L. Kastner, Donald H. Kropf, Dell M. Allen

Kansas Agricultural Experiment Station Research Reports

We assigned 112 Angus yearling steers to 14 nutritional treatments including control. Submaintenance, and 12 different combinations of ration energy (low, medium or high) and feeding period (56,91, 119, 147, or 175 days). Boneless rib steaks were evaluated by a trained taste panel and Instron Warner-Bratzler shear. Average daily gains increased as energy level increased. Slaughter weight, and USDA quality and yield grades increased as both ration energy and days fed increased. Taste panel score were not significantly affected by ration energy level, but muscle fiber tenderness, juiciness, flavor and overall tenderness scores tended to increase as days fed increased. …

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Effect Of High-Moisture Grain On Availability Of Phosphorus For Swine (1979), M Trotter, G Allee Jan 1979

Effect Of High-Moisture Grain On Availability Of Phosphorus For Swine (1979), M Trotter, G Allee

Kansas Agricultural Experiment Station Research Reports

A feeding trial and two phosphorus balance studies were conducted to compare the availabilities of phosphorus from high-moisture sorghum grain treated with propionic acid (1.2% acid, 23% moisture), grain stored in an oxygen limiting structure (27% moisture), and field-dried sorghum grain (13% moisture). Bone and phosphorus retention data indicated that the phosphorus in high-moisture sorghum grain is more available than phosphorus in field-dried sorghum grain.; Swine Day, Manhattan, KS, November 8, 1979

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Effects Of Feeding Oats Or Oat Hulls And Meal Or Pellets On The Performance Of Weanling Pigs (1979), A J. Thulin, G L. Allee, Robert H. Hines Jan 1979

Effects Of Feeding Oats Or Oat Hulls And Meal Or Pellets On The Performance Of Weanling Pigs (1979), A J. Thulin, G L. Allee, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Two hundred fifty eight, five-week old weanling pigs were used to evaluate various levels of dietary oats and oat hulls in swine diets by performance and incidence of diarrhea in pigs weaned at approximately 5 to 6 weeks of age (17.6 to 28.6 lbs.).; Swine Day, Manhattan, KS, November 8, 1979

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Effects Of Steam Pelleting And Extruding Sorghum Grain-Soybean Meal Diets On Phosphorus Availability For Swine (1979), M Trotter, G Allee Jan 1979

Effects Of Steam Pelleting And Extruding Sorghum Grain-Soybean Meal Diets On Phosphorus Availability For Swine (1979), M Trotter, G Allee

Kansas Agricultural Experiment Station Research Reports

Two feeding trials and three phosphorus balance studies were conducted to compare the effect of steam pelleting, extruding, and grinding on phosphorus availability. The results indicate that steam pelleting or extruding has little, if any, effect on the availability of phosphorus for finishing swine (100 to 220 lbs.).; Swine Day, Manhattan, KS, November 8, 1979

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Effects From Using Ralgro Sequentially On Sexual Development Of Bulls And On Growth And Carcass Characteristics Of Steers And Bulls, L. Fink, L. Corah, G. Kiracofe, M. Mckee Jan 1979

Effects From Using Ralgro Sequentially On Sexual Development Of Bulls And On Growth And Carcass Characteristics Of Steers And Bulls, L. Fink, L. Corah, G. Kiracofe, M. Mckee

Kansas Agricultural Experiment Station Research Reports

Forty-nine Simmental X Hereford and Hereford calves (24 bulls and 25 steers) were used to study the effect of Ralgro on growth, carcass traits, sex drive, sperm production, and development of sex organs. Approximately half of the bulls and half of the steers received a total of four 36-mg. Ralgro implants, one implant each 100 days (approximately 28, 128, 228 and 328 days of age). Implanted bulls and steers had higher average daily gains; however, the effect was greater in steers than bulls. Ralgro impaired all facets of sexual development measured. None of the implanted bulls could have been used …

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Pelvic Area, Calving Ease And Rebreeding In First Calf Heifers, R.R. Schalles, A.T. Fleck, L.R. Corah, G. Kiracofe Jan 1979

Pelvic Area, Calving Ease And Rebreeding In First Calf Heifers, R.R. Schalles, A.T. Fleck, L.R. Corah, G. Kiracofe

Kansas Agricultural Experiment Station Research Reports

Pelvic area had little influence on the number or severity of calving problems after size and condition of two-year-old first-calf heifers, sex and weight of their calf, and genetic background of the heifer and her calf were accounted for. Little difference in rebreeding was attributed to calving difficulty, although heifers that had Caesarean deliveries rebred about two weeks later than those giving natural birth.

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Data Needs Of Kansas Park And Recreation Agency Administrators (1979), Thomas D. Warner Jan 1979

Data Needs Of Kansas Park And Recreation Agency Administrators (1979), Thomas D. Warner

Kansas Agricultural Experiment Station Research Reports

No abstract provided.

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Overseeding Bermudagrass To Cool-Season Grasses (1979), John C. Pair, Charles E. Long Jan 1979

Overseeding Bermudagrass To Cool-Season Grasses (1979), John C. Pair, Charles E. Long

Kansas Agricultural Experiment Station Research Reports

No abstract provided.

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Using Foliar And Planting-Time Insecticides To Control Chinch Bugs In Grain Sorghum (1979), Gerald Wilde, Terry Mize Jan 1979

Using Foliar And Planting-Time Insecticides To Control Chinch Bugs In Grain Sorghum (1979), Gerald Wilde, Terry Mize

Kansas Agricultural Experiment Station Research Reports

No abstract provided.

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Incidence Of Short Estrous Cycles After Weaning In Beef Cows, S. Ward, Kenneth G. Odde, G. Kiracofe, M. Mckee Jan 1979

Incidence Of Short Estrous Cycles After Weaning In Beef Cows, S. Ward, Kenneth G. Odde, G. Kiracofe, M. Mckee

Kansas Agricultural Experiment Station Research Reports

Weaning calves from cows that had not cycled after calving caused a higher percentage of cows to show estrous in the next 25 days than cows suckling calves. However, 78.3% of the nonsuckling cows had short cycles (7-10 days) compared with 16.6% of the cows suckling calves. A short cycle does not appear to be clinically abnormal when estrus occurs with the first ovulation after calving. The percentage of cows having an estrus with the first ovulation, and thus a short cycle, increases drastically when calves are weaned. Although anestrous cows can be induced to cycle by weaning their calves, …

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Effect Of Growth Rate From Birth Through Thirty Months On Performance Of Heifers, R.R. Schalles, A.T. Fleck, G.H. Kiracofe, L.R. Corah Jan 1979

Effect Of Growth Rate From Birth Through Thirty Months On Performance Of Heifers, R.R. Schalles, A.T. Fleck, G.H. Kiracofe, L.R. Corah

Kansas Agricultural Experiment Station Research Reports

Heifers with faster gain the first and second winter (weaning to yearling and 18 months to 2 years old) had better production and reproduction than heifers with low or moderate gains. Gains during the first winter (weaning to yearling) had more influence on future performance than gains during the second winter as bred heifers.

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Rumen Bacterial Endotoxins And Their Possible Role In The Sudden-Death Syndrome, Tiruvoor G. Nagaraja, E. Bartley, L. Fina, H. Anthony, H. Leipold Jan 1979

Rumen Bacterial Endotoxins And Their Possible Role In The Sudden-Death Syndrome, Tiruvoor G. Nagaraja, E. Bartley, L. Fina, H. Anthony, H. Leipold

Kansas Agricultural Experiment Station Research Reports

We have found that rumen bacteria contain endotoxins that are released into rumen fluid. Also rumen fluid from grain-fed cattle contains considerably more free endotoxin than rumen fluid from hay-fed cattle. Injecting cattle with rumen bacterial endotoxins may be involved with such diseases associated with high-grain feeding as the sudden death syndrome.

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Delayed Winter Supplemental Feeding And Year-Round Mineral Supplementation Of Beef Cows On Native Range, J. Pruitt, R.R. Schalles, L.H. Harbers, Clenton E. Owensby, E.F. Smith Jan 1979

Delayed Winter Supplemental Feeding And Year-Round Mineral Supplementation Of Beef Cows On Native Range, J. Pruitt, R.R. Schalles, L.H. Harbers, Clenton E. Owensby, E.F. Smith

Kansas Agricultural Experiment Station Research Reports

Polled Hereford cows on native Flint Hills pasture not supplemented until February lost more weight from December to February, lost less from February to May, and were in poorer condition before calving than cows supplemented beginning in November. But calf survival, birth weight, and calf average daily gain were similar for both groups. Feeding cows a calcium, phosphorus, trace mineral mix did not improve any measure of cow or calf performance.

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Effects Of Rumensin Or Lasalocid On Rumen Fermentation In Vitro, E. Bartley, E. Herod, R. Bechtle, D. Sapienza, B. Brent Jan 1979

Effects Of Rumensin Or Lasalocid On Rumen Fermentation In Vitro, E. Bartley, E. Herod, R. Bechtle, D. Sapienza, B. Brent

Kansas Agricultural Experiment Station Research Reports

A series of artificial-rumen studies tested effects of Rumensin and lasalocid on rumen fermentation. At concentrations of 22, 44, and 66 ppm both depressed microbial protein synthesis. Both severely inhibited protein synthesis at 176 ppm. Both increased propionic acid and decreased acetic acid concentrations. However, only Rumensin increased lactic acid. Both inhibited total gas production and decreased the percentage of methane. We concluded that lasalocid and Rumensin have similar effects on rumen fermentation.

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Effects Of Ralgro And Des Implants During The Suckling Period On Later Reproductive Performance Of Beef Heifers, L.R. Sprott, L.R. Corah, G.H. Kiracofe, M. Mckee, F.L. Schwartz Jan 1979

Effects Of Ralgro And Des Implants During The Suckling Period On Later Reproductive Performance Of Beef Heifers, L.R. Sprott, L.R. Corah, G.H. Kiracofe, M. Mckee, F.L. Schwartz

Kansas Agricultural Experiment Station Research Reports

Heifers were given either one or two Ralgro implants or one DES implants during the suckling period with no obvious effect on later reproductive performance when the heifers were bred as yearlings. However, conception rates in control heifers were low in two trials, so more studies are needed for conclusive results.

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Evaluating The Breeding Potential Of Yearling Bulls, L. Corah, G. Kiracofe, M. Mckee, R.R. Schalles Jan 1979

Evaluating The Breeding Potential Of Yearling Bulls, L. Corah, G. Kiracofe, M. Mckee, R.R. Schalles

Kansas Agricultural Experiment Station Research Reports

Two years of research with nine herds indicated one of two yearling bulls with a herd usually will sire most of the calves. In six of the nine cases, the bull we pre-evaluated as most sexually active was the sire of the most of the calves. So a brief pre-breeding libido evaluation may help estimate breeding potential. In data from one herd the bull dominant as a yearling continued to be dominant as a two-year-old. Our data also indicated active breeding yearling bulls easily breed more than 20 to 25 cows during their first breeding season.

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Survey Of Kansas Cow-Calf Producers, W. Thompson, Jack G. Riley Jan 1979

Survey Of Kansas Cow-Calf Producers, W. Thompson, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

The average producer we surveyed was 46 years old with 1 year of college. He had 125 cows and 5 bulls, usually Hereford or Angus, breeding naturally on pasture for 4 1/2 months. Most replacement heifers calved at the same time as cows. Few semen tested and only 50% pregnancy tested. Eleven percent of the cows were culled annually and 75% of the producers raised their own replacements. The average cow-calf pairs used 10 acres of pasture, 2 acres of crop residues and 1 acre of hay. Vaccinations for Blackleg (79%) and Leptospirosis (61%) were popular but less than 30% …

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Minerals In Esophageal Samples From Steers On Native Bluestem Pastures, L.H. Harbers, J.E. Unoh, D.A. Sapienza, B.E. Brent, H.A. Peischel, J.D. Whitney, E.F. Smith Jan 1979

Minerals In Esophageal Samples From Steers On Native Bluestem Pastures, L.H. Harbers, J.E. Unoh, D.A. Sapienza, B.E. Brent, H.A. Peischel, J.D. Whitney, E.F. Smith

Kansas Agricultural Experiment Station Research Reports

This report summarizes monthly mineral contents of burned and control native bluestem pastures determined with samples from fisulated steers. Burning decreases calcium (Ca), potassium (K), and iron (Fe), and slightly decreases zinc (Zn). All minerals we studied were adequate for grazing cattle except that magnesium (Mg) and Potassium (K) appear to be borderline during winter months.

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Milo Stover, Forage Sorghum, Prairie Hay, Soybean Meal And Urea Compared For Growing Heifers, K. Bolsen, J. Oltjen, H. Ilg Jan 1979

Milo Stover, Forage Sorghum, Prairie Hay, Soybean Meal And Urea Compared For Growing Heifers, K. Bolsen, J. Oltjen, H. Ilg

Kansas Agricultural Experiment Station Research Reports

Milo stover silage, prairie hay or forage sorghum silage was fed in rations containing 10, 12 or 14% protein from soybean meal (SBM) or 12% protein from urea; 100 heifers were fed in the 78-day growing trial (November 11, 1977 to February 2, 1978). Heifers fed forage sorghum silage, prairie hay or forage sorghum silage + prairie hay had similar rate and efficiency of gains; those fed milo stover silage made slowest and least efficient gains. Rations containing prairie hay were consumed in the greatest amounts. Feeding rations with 12 or 14% protein from SBM gave better performance than rations …

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Using Wheat Straw In Beef Cow Rations, B. Peverley, L. Corah, M. Mckee, Ronald V. Pope Jan 1979

Using Wheat Straw In Beef Cow Rations, B. Peverley, L. Corah, M. Mckee, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

We conducted two trials to study using wheat straw in rations of either lactating or gestating beef cows maintained in dry lot. In trial 1, cow weight changes the last 60 days of lactation were: alfalfa hay, +26.88 lbs; two-thirds alfalfa hay-one third chopped wheat straw, +27.94 lbs; one-third alfalfa hay and two thirds chopped wheat straw, -26.84 pounds. Gains by the cows' calves; 146, 143, and 144 pounds, respectively did not differ statistically. Cows receiving one-third alfalfa hay and two-thirds chopped wheat straw lost condition as measured by weight/height ratios, while those on the other two treatments gained condition. …

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Yield And Quality Of Six Summer Annual Forages, M. Nuwanyakpa, Gerry L. Posler, K.K. Bolsen, H. Ilg Jan 1979

Yield And Quality Of Six Summer Annual Forages, M. Nuwanyakpa, Gerry L. Posler, K.K. Bolsen, H. Ilg

Kansas Agricultural Experiment Station Research Reports

In 1977, all summer annual forages studied produced excellent yields. Based on leafiness and regrowth ability, sudangrasses and pearl millet appeared to be best for early vegetative and boot cutting management. The sorghum-sudan hybrids had suitable yields and quality at all harvest stages. The hybrid forage sorghum appeared best suited for soft-dough-stage harvest although yields of pearl millet and sorghum-Sudan hybrids were also excellent.

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Protein Levels With And Without Monensin For Finishing Steers, W. Thompson, Jack G. Riley Jan 1979

Protein Levels With And Without Monensin For Finishing Steers, W. Thompson, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

Ration erode protein levels of 9%, 11%, 15%, 12 declining to 10.5% and 13% declining to 11% and finally to 9% were fed with and without Monensin. Steers fed 9% protein continuously gained the least and were the least efficient. Steers fed the other four protein levels had similar performances. Averaged across protein levels, Monensin had no significant effect on steer performance but it improved feed efficiency 7.4% with the 11%, 12-10.5% and 13-11-9% rations.

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Protein Adjustments During Temperature Stress, D.R. Ames Jan 1979

Protein Adjustments During Temperature Stress, D.R. Ames

Kansas Agricultural Experiment Station Research Reports

Adjusting feedlot rations to match the thermal environment can reduce costs of gains. Adjusting protein content of rations does not change average daily gain but it improves protein efficiency.

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Conventional Vs Accelerated Beef Production For Traditional And Later-Maturing Cattle Types, S.M. Myers, Michael E. Dikeman, Jack G. Riley Jan 1979

Conventional Vs Accelerated Beef Production For Traditional And Later-Maturing Cattle Types, S.M. Myers, Michael E. Dikeman, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

Analysis of traditional and later-maturing cattle types fed under accelerated (placed directly on the finishing ration) and conventional (back grounded on a growing ration before finishing) system, indicated large differences between feeding systems but smaller differences between cattle types in the same feeding system. Differences between feeding systems stress the economic importance of maintaining maximum gain, and the disadvantages of extended feeding periods, when much of the feed consumed is required for maintenance. Later-maturing cattle on accelerated feeding required the least feed per pound of gain.

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Performance, Carcass, And Meat Traits Of Different Cattle Types, Michael E. Dikeman Jan 1979

Performance, Carcass, And Meat Traits Of Different Cattle Types, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Different crossbred (X) cattle types were evaluated for growth, feed efficiency, carcass and meat traits. Steers were studied from mating Angus (A), Hereford (H), Brahman (B), Sahiwal (S), Pinzgauer (P), and Tarentaise (T) sires to Angus and Hereford females.

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