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Pituitary and uterine control of ovarian function in the gilt and ewe

Creator:: Chakraborty, Prabir Kumar, 1936-
Abstract:: The role of the pituitary gland and uterus in regulating ovarian function in the estradiol-treated gilt and ewe was investigated in two experiments. Pituitary gonadotropin content, ovarian follicular development and corpus luteum function were studied following daily intramuscular injection of seven gilts with 7 mg of 17β-estradiol from day 11...
Resource Type:: Dissertation
Full Text:: presented August 27, 1971 Typed by Mary Lee Olson for PRABIR KUMAR CHAKRABORTY ACKNOWLEDGEMENTS

Some ovarian characteristics of the postpartum rabbit

Creator:: Gjesvold, James Allen
Abstract:: The effects of suckling on several ovarian characteristics were studied in postpartum rabbits. Ovarian weight was found to be significantly greater in rabbits suckled for twelve days than in nonsuckled rabbits autopsied at a similar interval postpartum or in a third group autopsied at parturition. There were no significant differences...
Resource Type:: Masters Thesis
Full Text:: placenta is suspected of being the source of a substance which is luteotropic (Chu, Lee and You, 1946

Some effects of estradiol on ovine luteal function

Creator:: Akbar, Abulfatah Maqsood, 1938-
Abstract:: Some effects of 171β-estradiol on ovine luteal function were studied in five experiments. Estradiol injected into ewes on days 11 and 12 of the estrous cycle caused luteal regression in both intact and unilaterally hysterectomized ewes indicating that the presence of one uterine horn permits estradiol to cause luteolysis comparable...
Resource Type:: Dissertation
Full Text:: radioimmunoassay and Dr. D. J. Lee, Associate Professor, _Food Science and Technology for 'his help and

Some aspects of the mechanism of estrogen action in the uterus of the ewe

Creator:: Koligian, Karl Bruce
Abstract:: The binding of estrogen to endometrium and uterine arteries of the ewe was investigated by use of a [³H]estradiol exchange assay and by incubating whole tissue aliquants with [³ H]estradiol, a method which permits quantification of bound estrogen translocated from the cytoplasm to the nucleus. Five ewes were necropsied on...
Resource Type:: Dissertation
Full Text:: corpus luteum (Scott and Rennie, 1971; Lee et al., 1971) as specific tar- __ get tissues of estrogen

Gonadotropin releasing hormone-induced alteration of corpus luteum function in beef heifers

Creator:: Rodger, Lynn Dian
Abstract:: Two experiments were conducted to evaluate the effects of gonadotropin releasing hormone (GnRH) on the function of the bovine corpus luteum during the estrous cycle. In Experiment 1, 10 heifers were assigned randomly into two groups with each heifer serving as her own control. Heifers in Group I (n=5) were...
Resource Type:: Masters Thesis

Characteristics of preovulatory follicles of pubertal gilts

Creator:: Smith, Gary Daniel
Abstract:: Two experiments were conducted utilizing crossbred gilts to evaluate follicle characteristics at puberty and to determine the effect of exogenous estradio1-17β on embryonic mortality in the mature cycling gilt. Experiment 1 was conducted to compare preovulatory follicle numbers and sizes and follicular fluid concentrations of progesterone, estradio1-17β, plasminogen activator and...
Resource Type:: Masters Thesis
Full Text:: ., 1972; Lee and Ryan, 1973; Haour and Saxena, 1974). In contrast to the single receptor population

Oxytocin synthesis and release by the bovine corpus luteum

Creator:: Abdelgadir, Salaheldin Eltigani
Abstract:: Four experiments were conducted to determine oxytocin concen tration of bovine luteal tissue at different stages of the estrous cycle and to study the effects of prostaglandins F₂α (PGF₂α), E₂ (PGE₂), luteinizing hormone (LH), cycloheximide, colchicine and cytochalasin B on oxytocin synthesis and release in vitro. In experiment 1, luteal...
Resource Type:: Dissertation

Physiological factors affecting ovine uterine estrogen and progesterone receptor concentrations

Creator:: Prater, Patrice L.
Abstract:: Two experiments were conducted to determine whether in ewes uterine concentrations of estrogen and progesterone receptors are affected by the presence of a conceptus or by the hormonal milieu associated with extremes in photoperiod to which ewes are exposed. In Exp.1, nine mature ewes were unilaterally ovariectomized by removing an...
Resource Type:: Masters Thesis

Mechanisms of estradiol-17β-induced down-regulation of ovine uterine oxytocin receptors during the estrous cycle

Creator:: Hazzard, Timothy McLagan
Resource Type:: Dissertation

Factors affecting prolactin secretion in the African elephant

Creator:: Bechert, Ursula S.
Abstract:: Prolactin (PRL) is a peptide hormone that is involved in a number of diverse physiologic roles, particularly with respect to reproduction, including: influencing sexual and parental behaviors, onset of puberty, regulation of seasonal reproduction, follicular maturation, ovulation, luteinization and corpus luteum (CL) function, steroidogenesis, mammary gland development and lactation, testicular...
Resource Type:: Dissertation
Full Text:: Western, 1986), although mortality rates as high as 20% for the first 2 years have been reported (Lee

ScholarsArchive@OSU

Pituitary and uterine control of ovarian function in the gilt and ewe

Some ovarian characteristics of the postpartum rabbit

Some effects of estradiol on ovine luteal function

Some aspects of the mechanism of estrogen action in the uterus of the ewe

Gonadotropin releasing hormone-induced alteration of corpus luteum function in beef heifers

Characteristics of preovulatory follicles of pubertal gilts

Oxytocin synthesis and release by the bovine corpus luteum

Physiological factors affecting ovine uterine estrogen and progesterone receptor concentrations

Mechanisms of estradiol-17β-induced down-regulation of ovine uterine oxytocin receptors during the estrous cycle

Factors affecting prolactin secretion in the African elephant

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