The feeding ecology of a common temperate mesoherbivore, the oligophagous sea slug Placida dendritica (Gastropoda: Opisthobranchia: Ascoglossa), was examined from April 1985 to June 1989. Along the central coast of Oregon, Placida consumed three host species: the low intertidal green algae Codium setchellii, C. fragile, and Bryopsis corticulans. Individual slugs...
Eight experiments, two with poults and six with chicks, were
undertaken to determine the requirement for supplemental folic acid
as related to protein level and major protein source. Protein levels
for chicks and poults were 21, and 28 or 28 and 32%, respectively.
Major protein sources were soybean meal, fish...
An experiment was conducted during the period November 1967
to November 1968 at Oregon State University (OSU) and the Umatilla
Branch Experiment Station (BES) at Hermiston, two trials at each
location, to answer several questions: (1) could comparable rations
for swine be formulated by a computer on a least-cost basis;...
An experiment was conducted with 48 Yorkshire x Berkshire
crossbred barrows to evaluate the influence of varying Calorie: protein ratios in high-fat rations on performance and carcass quality
of growing-finishing swine. Pigs were individually fed rations containing
three levels of fat (lard): 0, 15 and 30 percent. Each fat
level...
A frozen concentrate (>10⁹ cfu/ml) of a human strain of Lactobacillus
lactis (strain MLC) was fed to swine. Bottle feeding resulted
in reduced fecal coliform counts and incidence of scouring in nursing
pigs. In one group of pigs treated 54 days, the Lactobacillus to coliform
ratio was 1280:1; in the...
The object of this study was to observe the effect of tallow plus
urea in vitro and in vivo. The study was carried out in three parts;
an in vitro fermentation study, a metabolism trial and a feedlot trial.
The in vitro study was conducted using a 4 x 2...
Three studies during three consecutive summers were conducted
at the Squaw Butte Experiment Station to estimate relative and quantitative
forage intake of spring and fall calving cow-calf pairs on
summer range. In a drylot study (experiment 1) individual animal
consumption of fescue or meadow hay cut at 2- to 10-day...
The objectives of this study were to determine the diets of
cattle at risk to DABPE on stress and inciting pastures and to determine
if segregated feeding groups of cattle displayed differential
susceptibility to DABPE.
Stress pastures were classified and mapped by plant communities
and segregated feeding group areas. Cattle...
One hundred two mature blackface crossbred ewes were randomly
divided into three equal groups to examine the effects of feeding
management during mating on blood chemistry, weight change and
subsequent reproductive performance.
Group I was kept in drylot from 17 days before through 17 days
after the start of mating....
Rapid copper depletion without clinical symptoms of copper deficiency
was found in cattle under natural Klamath basin conditions.
Copper metabolism was influenced by grass species fed to the animals.
Tall fescue, Festuca arundinacea Schreb. 'Altar and 'Fawn', reduced
liver copper stores and decreased blood plasma copper and ceruloplasmin
activity to...
Three products derived from shrimp processing waste (Pandalus
jordani) and a protein concentrate extracted from king crab waste
(Paralithodes camschatica) were evaluated as feed supplements for
standard dark and sapphire pelter mink (Mustela vison) replacing
approximately 10 and/or 20 percent of the protein in a standard wet
diet (33 percent...
The heat exchange of individuals in a foraging mixed population
of Zonotrichia leucophrys and Zonotrichia atricapilla in western
Oregon is analyzed with respect to the direction of stance and
feeding location. Values for heat gain or loss in the field were
generated from a model that estimates the equivalent black-body...
Five sheep digestion trials with four animals per
treatment and three treatments per trial were conducted to
determine if feeding protected tallow and/or protein would
alter the deleterious effects of feeding urea and tallow
together. Apparent digestibility coefficients, nitrogen
retention and biological values were calculated.
An additional trial was also...
Two digestibility trials using sheep were conducted to determine
the digestibility coefficients of a commercially processed NaOH treated
annual ryegrass straw cube. Comparisons were made with loose, chopped
ryegrass straw and a ryegrass straw cube processed with molasses as a
binder.
The NaOH cubed straw was produced by spraying a...
Several experiments involving broilers, chicks, layers, roosters,
poults and breeder turkeys were conducted with the primary objective
of examining research methods for evaluating poultry feed grains, their
additives and supplements. A secondary objective was to improve and
maximize the production responses of poultry fed locally grown grains.
Feed grain research...
A study was conducted during 1975 and 1976 to evaluate
the use of chemically cured pasture as a flushing feed for
ewes in western Oregon.
In 1975 (0.56 kg/ha) and 1976 (0.28 kg/ha) paraquat
was used to chemically cure hill pasture forage when perennial
ryegrass (Lolium perenne L.) and tall...
The results of research designed to develop a synthesized diet
as a substitute or supplement to algae for culturing the Miyagi strain
of juvenile Pacific oysters, Crassostrea gigas (Thunberg) are
reported. The growth of juvenile Pacific oysters fed equal amounts
(based on ash free dry weights [AFDW]) of algae (Pseudoisochrysis...
Pangola digitgrass (Digitaria decumbens), Coastcross-
1 bermudagrass (Cynodon dactylon), and Kazungula
setaria (Setaria sphacelata cv Kazungula) were used in a
two-year study at the C.A.M.P.A. Training Center in
Tampico, Mexico. The objective of the study was to determine
the optimum stocking rate during the grazing season
on these species and...
The objectives of this study were to investigate the effects of
the by-product, ryegrass straw, and the feed additive, monensin, on the
performance of feedlot lambs.
Four pelleted rations were fed ad libitum: Ration 1 - 50% barley,
50% alfalfa hay; Ration 2 - 50% barley, 50% alfalfa hay and...
Two studies were conducted to compare lamb feedlot
performance and digestibility of nutrients by lambs fed
rations containing bird-resistant and bird-susceptible
sorghum grain with 20 or 40% tall fescue hay as a source
of roughage.
Four rations were fed ad libitum on the performance
study and at 80% of ad...
A series of experiments were conducted to determine
the utilization of fibrous feeds by the rabbit. A review
of literature was performed to ascertain the results of
similar studies. The first two experiments involved
various levels of alfalfa substituted for corn or barley.
Results indicated that a 50 percent alfalfa...
The objectives of this study were to nutritionally evaluate various
feather and hair meals (FM, HM) as protein supplements for ruminants
and to study the in vitro/in vivo relationships of diets supplemented
with FM and HM.
In vitro (rumen and enzymes) studies, five in vivo digestion
trials and a feedlot...
Several experiments were conducted to evaluate various forages
and forage levels for use in rabbit diets.
Several tropical forages were evaluated for their potential in
feeding rabbits. One of the tropical forages, Desmodium distortum
produced better growth performance than alfalfa meal. The tropical
forages were used to derive prediction equations...
Several experiments involving broilers and laying hens
were conducted to study the effects of feeding crab meal,
dried whey and cellulose. The positive responses of crab
meal as a substance for improving the utilization of dried
whey and cellulose were examined. Cellulose treated with
concentrated H3PO4 in broiler diets and...
An extensive literature review into the causes and
controls of diarrhea was followed by three weanling rabbit
performance trials to examine the influence of dietary
modifications on diarrhea in the rabbit.
In the first set of experiments, the ion exchangers
clinoptilolite (0, 1.5 and 3.0%) and sodium bentonite (0 and...
A series of trials was conducted with Polypay (P), Coopworth
(CP), Hampshire (H), and crossbred ewes over a two year period at three
locations to assess the effects of ewe body condition and pre-lambing
supplementation on ewe productivity. Supplementation trials were
conducted at all three locations in Year 1 using...
Published April 1991. Reprinted June 1993. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published September 1935. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published April 1935. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published March 1930. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published August 1962. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published October 1962. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published October 1950. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published June 1931. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog