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Response of the bovine corpus luteum to exogenous gonadotropin-releasing hormone during the estrous cycle

Creator:: Martin, Teri L.
Abstract:: Two experiments were conducted to investigate the effects of gonadotropin-releasing hormone (GnRH), administered twice during the same estrous cycle, on bovine luteal function. Eight mature beef cows, each cow serving as her own control, were injected intravenously (i.v.) with saline on days 2 and 8 of the cycle (day of...
Resource Type:: Masters Thesis
Full Text:: and support. Finally, I extend my appreciation to Kevin D. Nusser for his friendship, encouragement

In Vivo and In Vitro effects of a cyclopropenoid fatty acid on progesterone synthesis by the ovine corpus luteum

Creator:: Tumbelaka, Ligaya
Abstract:: Two experiments were conducted to examine the effect of a cyclopropenoid fatty acid on luteal cell function. In Exp. 1, 12 mature ewes were mated to a fertile ram, assigned to two groups (n = 6/group) and laparotomized on day 18 of gestation. Ewes with corpora lutea (CL) in both...
Resource Type:: Masters Thesis

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
Full Text:: receptors (Stewart et al., 1987). However, it is presently unknown if oTP-1 also plays an immunoregulatory

Utilization of lipid by primiparous beef heifers during the postpartum period

Creator:: Filley, Shelby Jean
Resource Type:: Dissertation

Corpus luteum function in hysterectomized and unilaterally hysterectomized ewes treated with gonadotropin-releasing hormone

Creator:: Whitmore, Diana L.
Resource Type:: Masters Thesis
Full Text:: UHYST ewes on d 5 to 10 after estrus. However, mean jugular plasma concentrations of OT on days 12 and

Altered ovarian and uterine function in response to intravascular infusion of long chain fatty acids in nonpregnant ewes

Creator:: Burke, Joan M.
Resource Type:: Dissertation
Full Text:: (d) Follicular Phase (d) Time of Ovulation (h) surge LH 24-27 h after onset Ewe 16-17 1-2 24-36

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:: one pulse per 3 hours due to the inhibition by estradioi (Foster and Ryan, 1979). However, during

Embryonic mortality in pubertal gilts

Creator:: Archibong, Anthony Effanga
Abstract:: An experiment was conducted to compare the reproductive performance and serum concentrations of progesterone and estrogen of mated first (n=18) and third (n=18) estrous gilts slaughtered in equal numbers on days 3, 15 and 30 postmating. Fertilization rate did not differ between mated first and third estrous gilts. Embryonic survival...
Resource Type:: Dissertation
Full Text:: ESTROUS 1 Serum concentrations of estrogen in gilts mated at first 54 or third estrus on d 3, 15 and 30

Plasma membrane composition and luteinizing hormone receptors of ovine corpora lutea during early pregnancy

Creator:: Zelinski, Mary Beth
Abstract:: The lipid composition of plasma membranes of corpora lutea was examined to determine whether changes in this organelle occur during regression and early pregnancy in the ewe. Forty ewes were assigned to be necropsied on days 13 or 15 of the estrous cycle (D13-NP and D15-NP) or pregnancy (D13-P and...
Resource Type:: Dissertation

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

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

ScholarsArchive@OSU

Response of the bovine corpus luteum to exogenous gonadotropin-releasing hormone during the estrous cycle

In Vivo and In Vitro effects of a cyclopropenoid fatty acid on progesterone synthesis by the ovine corpus luteum

Physiological factors affecting ovine uterine estrogen and progesterone receptor concentrations

Utilization of lipid by primiparous beef heifers during the postpartum period

Corpus luteum function in hysterectomized and unilaterally hysterectomized ewes treated with gonadotropin-releasing hormone

Altered ovarian and uterine function in response to intravascular infusion of long chain fatty acids in nonpregnant ewes

Characteristics of preovulatory follicles of pubertal gilts

Embryonic mortality in pubertal gilts

Plasma membrane composition and luteinizing hormone receptors of ovine corpora lutea during early pregnancy

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

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