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Filtering by: Creator Bahr, Frank Remove constraint Creator: Bahr, Frank Academic Affiliation Animal Sciences Remove constraint Academic Affiliation: Animal Sciences

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  • 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
    Full Text:
    . Gratitude is also extended to Dr. Wilbert Gamble, Dr. Frank Moore, Dr. Steve Davis and Dr. Wilson

  • 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

  • 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

  • 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
    Full Text:
    significantly increased concentrations of PGF2a in the uterine lumen (Bazer and Thatcher, 1977; Frank et al