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Creator:: West, Kathryn S.
Abstract:: Two trials were conducted over consecutive years to examine the effects of ewe body condition and post-mating nutrition on ovulation rates and embryo survival. Trial 1 used 146 Polypay ewes ranging in age from 5 to 8 years in a 3 x 2 factorial array of pre-mating (high-H, low flushed-LF...
Resource Type:: Masters Thesis
Full Text:: for hugging all those sheep during sample collection, and my fellow graduate student, Mohammed Nawaz

Creator:: Paul, Katy Beth
Abstract:: Expression of membrane-type matrix metalloproteinases (MT) and tissue inhibitors of matrix metalloproteinases (TIMP) was evaluated in sheep embryos and uterus during the pre- and peri-implantation periods. Embryos and uterine samples were surgically collected from ewes on days 9, 11, 13, and 15 of pregnancy (n=3 ewes/day) and of the estrous...
Resource Type:: Masters Thesis
Full Text:: Metalloproteinase and Inhibitor Expression in Sheep Embryos and Uterus. Approved: Alfred R. Menino Jr

Creator:: Paslay, Elizabeth M.
Abstract:: Experiments were conducted to determine whether endogenous progesterone regulates synthesis and/or secretion of luteal oxytocin (OT). In experiment 1, mature ewes (n=5 per group) were assigned randomly to control or mifepristone (RU 486) treatment groups. Ewes were injected twice daily s.c. with vehicle or 10 mg RU 486 from days...
Resource Type:: Masters Thesis
Full Text:: effect on reproduction is especially apparent in the ewe and the mare and can be largely attributed to

Creator:: Hazzard, Timothy McLagan
Resource Type:: Dissertation
Full Text:: photoperiod. In species such as sheep and horses, reproduction of females commences due to the decreasing or

Creator:: Dunlap, Kathrin Anson
Abstract:: Effects of progesterone (P₄) and mifepristone (RU 486) on binding of oxytocin (OT) to its ovine uterine receptor (OTR) were studied in two experiments. Two additional experiments were conducted to evaluate specific binding sites for P4 in endometrial plasma membranes. In Exp. 1, ovariectomized ewes were injected with estradiol-17β (E₂)...
Resource Type:: Masters Thesis
Full Text:: the luteolytic-signal, thus ensuring luteal regression. The PGF20 pulses in sheep and cattle reach

Creator:: Fackrell, Bronwyn B.
Abstract:: Embryonic loss of potential lambs resulting in partial failure of multiple ovulations is a significant factor in the reproductive rate of prolific breeds. The roles of genetic and nutritional variation (and their possible interaction) on embryonic loss were studied by mating blackface and whiteface ewes of either high or low...
Resource Type:: Masters Thesis
Full Text:: . Land and D. W. Robinson (Ed.) Genetics of Reproduction in Sheep. p. 185. Butterworths, London. Meyer

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