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A comparison of in vivo and in vitro techniques for the evaluation of varying roughage-concentrate rations

Creator:: Klett, Ramon Hollis
Abstract:: The objective of this study was to compare the total collection (in vivo), nylon bag, and in vitro digestibility techniques under standardized conditions. Twin steers were used simultaneously to measure the digestibility of five rations consisting of the following ratios of alfalfa hay to steamed roller barley: 4:0 (I), 3:1...
Resource Type:: Dissertation
Full Text:: the Oregon State University System: My major professor, Dr. A. T. Ralston, for his guidance and

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

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

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

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

Some effects of diethylstilbestrol on sexual maturation and growth of male calves

Creator:: Patton, Westley R.
Abstract:: Six experiments were conducted to determine the effects of DES implantation on preweaning performance and sexual maturation of male calves when implanted at various stages of development and different sites. Calves receiving DES implants in Experiments I and II were implanted at birth, at birth and at about three months...
Resource Type:: Masters Thesis
Full Text:: : A. T. Ralston Six experiments were conducted to determine the effects of DES implantation on

Response of feed lot heifers to certain exogenous hormones

Creator:: Caster, John Eugene
Abstract:: Some effects of hormone treatment on feedlot heifers were studied. The treatments were 15 mg diethylstilbestrol (DES) implant, Synovex H implant, .25 mg oral melengestrol acetate (MGA) per head per day, and .40 mg oral MGA per head per day. One hundred heifers, 20 to each treatment, were used. All...
Resource Type:: Masters Thesis
Full Text:: FEEDLOT HEIFERS TO CERTAIN EX- OGENOUS HORMONES Abstract approved: T. Ralston Some effects

Ruminant and microbial physio-chemical response to abrupt ration changes as influenced by chemical and/or biological means

Creator:: Patton, Westley R.
Abstract:: Three trials with wethers and four trials with steers were conducted to determine some of the effects of sodium bicarbonate, calcium hydroxide and/or transfer of ruminal contents on ruminant adjustment to abrupt changes to concentrate rations. Lambs fed a basal concentrate diet plus sodium bicarbonate had the highest average feed...
Resource Type:: Dissertation
Full Text:: appreciation to the following persons involved in the completion of this project: Dr. A. T. Ralston, my major

Effect of varying levels of certain enzymes on digestibility of roughage in the rumen

Creator:: Miller, Alvin Earl
Resource Type:: Masters Thesis
Full Text:: Sincere thanks are extended to Dr. Allen T. Ralston for his counsel and guidance throughout this study

Vitamin A status of vegetarians

Creator:: Schardt, David G.
Resource Type:: Masters Thesis
Full Text:: A Status of Vegetarians ABSTRACT APPROVED: „.. . , . . . Lorraine T. Miller, PhD. In

ScholarsArchive@OSU

A comparison of in vivo and in vitro techniques for the evaluation of varying roughage-concentrate rations

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

In vitro and in vivo evaluations of chemically treated ryegrass straw

Cow calf confinement energy levels

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

Some effects of diethylstilbestrol on sexual maturation and growth of male calves

Response of feed lot heifers to certain exogenous hormones

Ruminant and microbial physio-chemical response to abrupt ration changes as influenced by chemical and/or biological means

Effect of varying levels of certain enzymes on digestibility of roughage in the rumen

Vitamin A status of vegetarians

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