Index Catalog // ScholarsArchive@OSU

Selenium deficiency in the equine

Creator:: Basler, Susan E.
Abstract:: 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...
Resource Type:: Masters Thesis

The effects of morphine and naloxone on serum levels of luteinizing hormone in intact and ovariectomized pony mares during the breeding and nonbreeding seasons

Creator:: Dietz, Jane F.
Abstract:: 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...
Resource Type:: Masters Thesis

Two uses of the synthetic progestagen altrenogest for aiding in the establishment and maintenance of pregnancy in mares

Creator:: Weeks, Linda C.
Abstract:: 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,...
Resource Type:: Masters Thesis

Urinary estrogens and progestins in pregnant pony mares

Creator:: Riad, Mohamed Tarek
Abstract:: Urinary steroids have been studied during early and late pregnancy in domestic horses or sporadic samples at various stages of pregnancy in wild equidae. In our studies, urinary estrone sulfate (E1S) and pregnanediol glucuronide (PdG) were monitored throughout pregnancy in six pony mares by enzyme immunoassay (EIA). Both hormones were...
Resource Type:: Masters Thesis

Cortisol, pregnene and pregnane profiles in normal and dysmature newborn pony and lighthorse foals

Creator:: Voller, Bernadette E.
Resource Type:: Masters Thesis

Steroid transformations in the pregnant mare: the effects of exogenous progestins and trilostane on the progestin milieu- in vivo and in vitro

Creator:: Schutzer, William E.
Resource Type:: Masters Thesis

Progestin profiles near parturition in light horse, pony and miniature horse mares

Creator:: Baumholtz, Heather Mackie
Resource Type:: Masters Thesis

Fecal progestins in the early gestation ewe monitored by gas chromatography/mass spectrometry

Creator:: Miller, Charles W.
Abstract:: Previous work in this laboratory revealed that hormone analysis using fecal samples may predict the number of fetuses carried by pregnant ewes at mid- to late gestation. Reliable lambing number prediction is useful to the producer. Using gas chromatography/mass spectrometry the 5α- and 5β-series of pregnanes and selected 4- and...
Resource Type:: Masters Thesis

Plasma and fecal progestins during placentation in the mare

Creator:: Von Deneen, Karen M.
Abstract:: Aims of this research were to find the time period and specific progestins reflective of the transition from ovarian source to placental source during early gestation in mares. An attempt was made to describe an accurate profile of total and individual progestins in plasma and feces from 64 to 150...
Resource Type:: Masters Thesis

The biologic activity of 5α-reduced pregnanes in the late gestation mare

Creator:: Strooband, Jenny A.
Abstract:: Mares have an atypical hormone profile during pregnancy. Systemic progesterone (P4) levels approach zero by day 220 of gestation. Other reduced pregnanes such as 5α-pregnane-3, 20-dione (5α), 5α-pregnane-3β, 20α-diol (βα), 3β-hydroxy-5α-pregnan-3-one (3β) and 20α-hydroxy-5α-prenan-3-one (20α), increase to near μg/mL levels in the peripheral system of the mare until directly before...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Selenium deficiency in the equine

The effects of morphine and naloxone on serum levels of luteinizing hormone in intact and ovariectomized pony mares during the breeding and nonbreeding seasons

Two uses of the synthetic progestagen altrenogest for aiding in the establishment and maintenance of pregnancy in mares

Urinary estrogens and progestins in pregnant pony mares

Cortisol, pregnene and pregnane profiles in normal and dysmature newborn pony and lighthorse foals

Steroid transformations in the pregnant mare: the effects of exogenous progestins and trilostane on the progestin milieu- in vivo and in vitro

Progestin profiles near parturition in light horse, pony and miniature horse mares

Fecal progestins in the early gestation ewe monitored by gas chromatography/mass spectrometry

Plasma and fecal progestins during placentation in the mare

The biologic activity of 5α-reduced pregnanes in the late gestation mare

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