Index Catalog // ScholarsArchive@OSU

Plant communities and habitat types of the Meadow Creek experimental watershed

Creator:: Ganskopp, David C. (David Conrad)
Abstract:: The objectives of this study were: 1) to identify and map the experimental area of Meadow Creek watershed by existing vegetation, and 2) to identify and map the experimental area of Meadow Creek watershed by habitat types. The classification system adopted for this study was based on the habitat type...
Resource Type:: Masters Thesis

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

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

Vitamin E, selenium and tri-o-cresylphosphate interrelationships

Creator:: Shull, Lee R.
Abstract:: A two-part study was conducted to investigate some of the nutritional relationships between dietary tri-o-cresylphosphate (TOCP), a toxic stress material, and dietary vitamin E and selenium. In part one, growth rate of male weanling Long-Evans rats and day-old Japanese quail (Coturnix coturnix japonica) was used to determine the protective action...
Resource Type:: Masters Thesis

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

Selenium effects and species differences in hepatic metabolism of pyrrolizidine alkaloids and other xenobiotics

Creator:: Shull, Lee R.
Abstract:: The metabolism of pyrrolizidine alkaloids and other drugs was studied with regard to nutritional status and species differences. Pyrrolizidine alkaloids which are biotransformed to severely toxic metabolites were isolated from tansy ragwort (Senecio jacobaea). Semi-purified alkaloid crystals containing five alkaloids (senecionine, seneciophylline, jacobine, jacoline, and jacozine) were prepared and found...
Resource Type:: Dissertation

Cow calf confinement energy levels

Creator:: Price, David P.
Resource Type:: Dissertation

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

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

The effects of ultra-hydrostatic pressurization of pre-rigor muscle on characteristics of economic importance

Creator:: Ali, Elgasim Elgasim
Abstract:: This study was designed to confirm or refute the tenderizing effect of ultra-hydrostatic pressure on warm excised pre-rigor muscle, plus to take a thorough look at its effect on some meat characteristics of economic importance. Samples for the experiment were obtained from animals (cattle and sheep) slaughtered at Oregon State...
Resource Type:: Masters Thesis

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

The effect of different levels and sources of crude protein on the voluntary intake of low quality roughages

Creator:: Santos, Ariel
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Plant communities and habitat types of the Meadow Creek experimental watershed

In vitro and in vivo evaluations of chemically treated ryegrass straw

Nutritional aspects of artificially feeding captive and wild deer

Vitamin E, selenium and tri-o-cresylphosphate interrelationships

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

Selenium effects and species differences in hepatic metabolism of pyrrolizidine alkaloids and other xenobiotics

Cow calf confinement energy levels

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

The effect of fats and urea on in vitro cellulose digestion

The effects of ultra-hydrostatic pressurization of pre-rigor muscle on characteristics of economic importance

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

The effect of different levels and sources of crude protein on the voluntary intake of low quality roughages

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