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Filtering by: Creator Ralston, S. Remove constraint Creator: Ralston, S. Committee Member Oldfield, J. E. Remove constraint Committee Member: Oldfield, J. E.

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  • The effect of various additives on nutritive value of ryegrass straw silage

    Creator:
    Shultz, Thomas Anthony
    Abstract:
    Observations were made on silage pH, chemical composition and 24hr in vitro dry matter digestion (IVDMD) to evaluate effects of various additives ensiled with annual ryegrass straw. Additives were compared in factorial designed trials utilizing .95 1 glass jar silos. Selection of additives used in each subsequent trial was based...
    Resource Type:
    Dissertation
    Full Text:
    for privacy Abstract approved; Dr. A. T. Ralston Observations were made on silage pH, chemical

  • The effects of aerobic and anaerobic fermentation on the nutritive value of ryegrass straw

    Creator:
    Jones, Steven Ryan
    Abstract:
    A series of in vitro laboratory trials and in vivo sheep digestion trials were used to evaluate aerobically or anaerobically fermented perennial ryegrass straw. The laboratory trials consisted of a silage study, where mini-silos were used in a 9 X 2 factorial design with nine levels of whey (0 to...
    Resource Type:
    Dissertation
    Full Text:
    , T, Ralston A series of in vitro laboratory trials and in vivo sheep digestion trials were used to

  • Cow calf confinement energy levels

    Creator:
    Price, David P.
    Resource Type:
    Dissertation
    Full Text:
    December 6, 1976 Title: COW-CALF CONFINEMENT ENERGY LEVELS Redacted for Privacy A. T. Ralston Abstract

  • In vitro and in vivo evaluations of chemically treated ryegrass straw

    Creator:
    Anderson, Daniel Craig
    Abstract:
    Seven in vitro trials were conducted to compare the effects of soaking annual ryegrass straw in solutions of sodium hydroxide (Na₄OH), potassium hydroxide (KOH), ammonium hydroxide (NH₄OH), or sodium formate (NaCHO₂) at varying levels. Dry matter digestibility (DDM) was the criterion used to measure treatment response. A 3 x 3...
    Resource Type:
    Dissertation
    Full Text:
    EVALUATIONS OF CHEMICALLY TREATED RYEGRASS STRAW Redacted for Privacy Abstract approved: Dr. A. T. Ralston

  • Seasonal cattle and sheep diets on Festuca arundinacea-Trifolium subterraneum and Lolium perenne-Trifolium subterraneum pastures in western Oregon

    Creator:
    Bedell, Thomas E.
    Abstract:
    Sheep and cattle dietary preferences were determined on tall fescue-subclover ( Festuca arundinacea-Trifolium subterraneum) and perennial ryegrass-subclover (Lolium perenne-Trifoliuni subterraneum) pastures in western Oregon during the spring and summer periods of 1964 and 1965. Esophageal-fistulated Willamette ewes and Hereford and Hereford-Angus yearling cattle were grazed separately on each pasture mixture...
    Resource Type:
    Dissertation
    Full Text:
    Dr. C. E. Poulton, Dr. W. S McGuire, Dr. J. E. Oldfield and Dr. A. T. Ralston is gratefully

  • Computer simulation of beef cattle production systems in the Llanos of Columbia

    Creator:
    Levine, Joel Martin
    Abstract:
    A simulation model capable of execution on a programmable calculator was developed to study voluntary intake, liveweight change, and fertility of grade Zebu cows in the Llanos of Colombia. Organic nitrogen in the diet and meta bolic weight were used to predict intake; age, liveweight, and energy concentration were the...
    Resource Type:
    Dissertation
    Full Text:
    State University: Drs. A. Ralston, A. G. Nelson, K. Rowe, J. Renden, D. Thomas, and J. E. Oldfield for

  • The effect of fats and urea on in vitro cellulose digestion

    Creator:
    Kezar, Wesley W.
    Abstract:
    Objectives of this study were to ascertain the effect of fat and urea, used alone or in combination, on rumen cellulose digestion in vitro. A closed in vitro system (24 hour digestion) was used with a 5 x 4 factorial arrangement of treatments to study the effect of added corn...
    Resource Type:
    Masters Thesis
    Full Text:
    . Ralston, Kennick and Davidson (1965) fed basal diets containing 83% wheat with beef tallow added at 3.5

  • Nutritional aspects of artificially feeding captive and wild deer

    Creator:
    Dean, Ronald E.
    Abstract:
    Most of the nutritionally related difficulties of winter feeding deer apparently result from either poor acceptability of artificial rations or digestive disturbances that result from feeding starved animals feeds to which they are not accustomed. Reported in this thesis are studies conducted with both captive and wild deer concerning acceptability...
    Resource Type:
    Dissertation
    Full Text:
    who reviewed my thesis. These individuals were Dr. A. F. Anglemier, , Dr. F. L. Hisaw, Dr. S. E