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Equine chorionic gonadotropin (acronym given as eCG but not to be confused with ECG) is a gonadotropic hormone produced in the chorion of pregnant mares. Previously referred to as pregnant mare's serum gonadotropin ( PMSG ), the hormone is commonly used in concert with progestogen to induce ovulation in livestock prior to artificial insemination .
If pregnancy occurs in equine, the placental hormone equine chorionic gonadotropin released by endometrial cup acts like LH and FSH and stimulates additional ovulations, although the oocytes released during these ovulations are not fertilized. The resulting accessory corpora lutea produce progesterone and keep levels of progesterone high during ...
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Human chorionic gonadotrophin (hCG) is a hormone that is produced when a woman is pregnant, and this is because the placenta is responsible for its production. [9] It takes approximately 9 days for the fertilized egg to move from the fallopian tubes to the uterus, where it implants itself into the walls of the uterus. [9]
Ovulation occurs about 109 hours after the start of follicle growth. Estrogen peaks at about 11 am on the day of proestrus. Between then and midnight there is a surge in progesterone, luteinizing hormone and follicle-stimulating hormone, and ovulation occurs at about 4 am on the next estrus day. The following day, metestrus, is called early ...
Results of the Women's Health Initiative (WHI) menopausal hormone therapy randomized controlled trials; Clinical outcome Hypothesized effect on risk Estrogen and progestogen (CEs Tooltip conjugated estrogens 0.625 mg/day p.o. + MPA Tooltip medroxyprogesterone acetate 2.5 mg/day p.o.) (n = 16,608, with uterus, 5.2–5.6 years follow up) Estrogen ...
The application of utilizing eFSH to increase the efficiency of equine embryo transfer was tested at the University of Saskatchewan.Embryos from 12 donor mares at 8 days of ovulation were recovered, scored, then transferred to 37 recipients mares who were tested for pregnancy after 7-10 days. 5 pregnancies resulted from the 15 embryos were recovered from the eFSA treatment group and 4 ...
They begin to develop at approximately 25 days of pregnancy, deriving from the chorionic girdle. At approximately 36–38 days of pregnancy, the cells that will become the endometrial cup begin to burrow into the endometrial tissue, through the basement membrane, and into the uterine stroma. Their invasion of the uterine stroma begins the cells ...