Browsing by Subject "progesterone"
Now showing items 1-17 of 17
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(2016-12-14)Over the course of two breeding seasons, the ovarian activity and concentrations of progesterone, luteinizing hormone (LH), and cortisol were evaluated and compared in six exercising (EXER) mares and six non-exercising ...
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(2009-05-15)Objectives were to determine: 1) whether estradiol benzoate (EB) provides a superior alternative to GnRH for synchronizing emergence, growth and maturation of a new follicular wave for fixed timed AI (TAI) in Bos ...
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(Texas A & M University. Libraries, 1980)
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(Texas A & M University. Libraries, 1981)
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(Texas A & M University. Libraries, 1981)
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(Texas A & M University. Libraries, 1983)
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(2018-08-06)This study was conducted to confirm that exogenous P4 administered during the peri-implantation period (Days 1.5 to 8) advances conceptus growth, development, and implantation to Day 12 of gestation. This study determined ...
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(2018-08-06)In a previous study, administration of progesterone (P4) to ewes during the first 9 to 12 days of pregnancy has been shown to accelerate blastocyst development by Day 12 of pregnancy, likely due to P4-induced upregulation ...
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(Texas A&M University, 2005-02-17)A homogeneous group of thirty-one crossbred ewes was used to determine the effect of administering a progesterone Controlled Intravaginal Drug Releasing Device (CIDR) on circulating levels of progesterone in the subsequent ...
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(Texas A&M University, 2007-09-17)The peri-implantation period in mammals is critical with respect to survival of the conceptus and establishment of pregnancy. During this period of pregnancy, reciprocal communication between ovary, conceptus, and endometrium ...
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(2009-05-15)In cattle and sheep, a significant decrease in temperature has been noted prior to parturition. In the mare, similar temperature decreases have been documented, although results have been inconsistent when temperatures ...
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(2010-07-14)This research was conducted to test the hypothesis that select nutrients including glucose, leucine, arginine and glutamine stimulate conceptus development by activating mTOR (mammalian target of rapamycin; HGNC approved ...
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(Texas A&M University, 2008-10-10)Progesterone is unequivocally required for the establishment and maintenance of pregnancy in all mammals studied. Its known functions are complex and encompass global changes in gene expression. Therefore, studies were ...
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(2012-10-19)Establishment of pregnancy in ruminants requires blastocyst development to form an elongated filamentous conceptus that produces interferon tau (IFNT), the pregnancy recognition signal, and initiate implantation. Blastocyst ...
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(Texas A & M University. Libraries, 1980)
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(Texas A & M University. Libraries, 1980)
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(2022-04-14)The mammalian embryo must develop from a single cell (the oocyte fertilized by the sperm) to a multi-cellular fetal-placental unit. In particular, the conceptuses (embryo/fetus and associated placental membranes) of livestock ...