The effects of burial by tephra (volcanic aerial ejecta) on
forest understory plants were examined northeast of Mount St. Helens,
Washington, in the area where the 18 May 1980 eruption deposited
tephra but did not destroy canopy trees. At six sites along a tephra
depth gradient from 2-15 cm, understory...
Intact and ovariectomized (OVX) pony mares were randomly assigned to treatments of morphine (M), naloxone (N), or a saline control (C) to determine if endogenous opioid peptides (EOP) play a role in equine seasonal breeding. Morphine was expected to decrease luteinizing hormone (LH), whereas N (an opiate antagonist) should in...
Ankle injuries account for 10-20% of time loss injuries in sports
with almost 85% of these injuries being sprains, the majority of
which occur to the lateral ligamentous complex. With statistics such
as these it becomes important that the Athletic Trainer establish a
method for effective and efficient means to...
Whole blood selenium levels were measured in 207 horses, representing 41 ranches and 11 regions throughout Oregon. Age, sex,
diet, and history of disease were recorded. Diet was divided into
three categories; local feed only, commercial feed, and Se supplemented feed. Region (p<.01), diet type (p<.01), and a region x...
One hundred and fourty-one lambs showing signs of pneumonia
and/or enteritis from four different flocks in western Oregon were
sampled for virus isolation. Two ovine adenoviruses, antigenically
distinct from each other and from bovine adenoviruses, were
isolated from the nasal mucosa and feces of two lambs. The lambs
were showing...
Roughskin newts, Taricha granulosa (Skilton), were exposed to
UV-B (280-320nm), UV-A (321-380 nm), and visible radiation from
fluorescent sunlamps (Westinghouse FS40) that were filtered with
cellulose acetate film. UV-B controls were exposed to irradiation
from sunlamps that were filtered with Mylar-D, a polyester film
that effectively absorbed UV-B radiation while...
Studies were conducted in order to evaluate the efficacy of the
orally active, synthetic progestagen, altrenogest, for assisting in the
establishment and maintenance of pregnancy in mares. In experiment
I, nine pony mares were bred, and started on altrenogest treatment
on Day 4 after ovulation. On Day 10 after ovulation,...
In the first experiment the minimum dietary toxic levels of vitamin A were determined in pregnant rabbits over three parities. The treatments consisted of basal diet plus 10,000, 30,000, 60,000, and 90,000 IU/Kg added vitamin A. The basal diet was formulated to be free of vitamin A and beta-carotene; rice...
Many investigators have suggested that current photosynthate
supply can limit adventitious root formation on leafy cuttings.
Accordingly, studies were undertaken to determine the effects of
altering photosynthesis and carbohydrate levels on adventitious root
formation by leafy cuttings of a number of different species.
Pea cuttings rooted at high CO₂ (1800...