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Kansas State University Libraries

Kansas Agricultural Experiment Station Research Reports

1979

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Articles 31 - 40 of 40

Full-Text Articles in Life Sciences

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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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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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 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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Prevention And Control Of Enteric Swine Diseases (1979), R M. Phillips, N V. Anderson Jan 1979

Prevention And Control Of Enteric Swine Diseases (1979), R M. Phillips, N V. Anderson

Kansas Agricultural Experiment Station Research Reports

Work on colibacillosis has been concentrated on isolating and identifying enterotoxigenic E. coli from specimens submitted to the Veterinary Diagnostic Laboratory. Strains of enterotoxigenic E. coli isolated in the laboratory were sent to veterinary practitioners to use in producing of autogenous vaccines for producers to prevent neonatal diarrhea. Of 1,179 E. coli isolated from clinical specimens and tested for enterotoxin production, more than 22 percent of these isolates were disease-producing enterotoxigenic strains. These enterotoxigenic E. coli were sent to 136 veterinary practitioners for use in autogenous vaccines. The diagnostic laboratory also serves as a center for storing these vaccine strains.; …

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Allyl Trenbolone To Control Estrus In Gilts-Effect Of Dose (1979), Duane L. Davis, J M. Robl, Jim L. Nelssen Jan 1979

Allyl Trenbolone To Control Estrus In Gilts-Effect Of Dose (1979), Duane L. Davis, J M. Robl, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

Replacement gilts frequently do not fit smoothly into existing breeding and farrowing schedules because time of estrus cannot be predicted. Being able to program replacement gilts into a breeding herd would improve management, so we investigated the effectiveness of a synthetic progestogen, allyl trenbolone , to control estrus in gilts. Allyl trenbolone is not presently available to swine producers.; Swine Day, Manhattan, KS, November 8, 1979

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Allyl Trenbolone To Control Estrus In Gilts-Conception Rate And Litter Size After Treatment (1979), Duane L. Davis, J M. Robl, Jim L. Nelssen Jan 1979

Allyl Trenbolone To Control Estrus In Gilts-Conception Rate And Litter Size After Treatment (1979), Duane L. Davis, J M. Robl, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

Control of estrus in gilts is theoretically possible by feeding a progestogen for 18 consecutive days. During the feeding period the progestogen suppresses estrus in all gilts and when withdrawn from the feed, all animals are expected to come in heat 4 to 7 days later. To be useful, the synchronizing agent must meet two criteria: (1) it must effectively control the time of estrus, and (2) it must not adversely affect fertility. We conducted this trial to evaluate a progestogen, allyl trenbolone, with respect to these criteria. Allyl trenbolone is not presently available to swine producers.; Swine Day, Manhattan, …

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Artificial Rearing Of Baby Pigs With Twice-A-Day Feeding And Cow Colostrum (1979), M T. Noll, G L. Allee Jan 1979

Artificial Rearing Of Baby Pigs With Twice-A-Day Feeding And Cow Colostrum (1979), M T. Noll, G L. Allee

Kansas Agricultural Experiment Station Research Reports

Four experiments involving 140 pigs were conducted to evaluate cow colostrum and twice-a-day feeding in artificial rearing of baby pigs. Piglets were allowed to nurse the sow for 15 hours after birth and allotted by litter and weight to milk replacer or milk replacer plus cow colostrum. Piglets were housed in individual wire cages and fed four times on day one, three times on day two, and twice daily days 3 through 21. Dry feed was offered to pigs after day 14. Pigs were removed from the individual cages and moved to a conventional nursery at 21 days of age. …

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